Overpressure protection structure for water ballast tank

Abstract

The utility model discloses a ballast water tank overpressure protection structure which comprises a ballast tank, a ballast pump set is arranged on one side of the ballast tank, and a water supply pipeline system is arranged between the ballast pump set and the ballast tank. The water supply pipeline system comprises a first connecting pipe, a first collecting pipe, a second connecting pipe, a second collecting pipe, a first liquid outlet pipe and a first liquid inlet pipe, the first connecting pipe is fixedly arranged on one side of the ballast pump set, and the first collecting pipe is fixedly arranged at one end of the first connecting pipe; a second connecting pipe is fixedly arranged on the side, away from the first connecting pipe, of the ballast pump set, a second collecting pipe is fixedly arranged at one end of the second connecting pipe, and a first liquid outlet pipe is arranged at the upper end of the second collecting pipe. According to the protection structure, the pressure can be automatically relieved by utilizing the pressure of ballast water in the ballast tank, and the pressure can also be quickly and automatically relieved by utilizing the ballast pump assembly according to requirements, so that the overpressure protection effect of the ballast tank can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ballast water tanks, in particular to an overpressure protection structure of a ballast water tank. Background Art

[0002] The ship's ballast water system is mainly composed of ballast water pumps, ballast water pipelines, ballast tanks and related valves. The system's functions are: to inject or discharge ballast water into or out of the entire ship's ballast tanks according to the needs of ship operation, so as to adjust the ship's draft and the longitudinal and transverse stability and safe metacentric height of the hull; to reduce hull deformation to avoid excessive bending moment and shear force, and reduce hull vibration; and to improve the seaworthiness of empty tanks.

[0003] In the prior art, in this type of ballast water system, when water comes out of the air pipe on the upper end of the deck, it means that the air pipe is full of water, and the ballast water overpressure protection structure generally uses an overflow pipe to limit the maximum water level inside the ballast tank. For example, a ballast water tank overpressure protection structure disclosed in Chinese patent application No. 201520267516.2 adds an overflow pipe to replace the air pipe on the upper end of the deck for overflow and pressure relief when in use. However, the entire protection mechanism can only overflow, but cannot quickly relieve pressure as needed to quickly discharge the ballast water inside the ballast tank. Therefore, an improved ballast water tank overpressure protection structure is needed to address this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a ballast water tank overpressure protection structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ballast water tank overpressure protection structure, comprising a ballast tank, a ballast pump group is arranged on one side of the ballast tank, a water supply pipeline system is arranged between the ballast pump group and the ballast tank, the water supply pipeline system comprises a first connecting pipe, a first manifold, a second connecting pipe, a second manifold, a first liquid outlet pipe, and a first liquid inlet pipe, a first connecting pipe is fixedly arranged on one side of the ballast pump group, the first manifold is fixedly arranged at one end of the first connecting pipe, a second connecting pipe is fixedly arranged on the side of the ballast pump group away from the first connecting pipe, a second manifold is fixedly arranged at one end of the second connecting pipe, a first liquid outlet pipe is arranged at the upper end of the second manifold, the first liquid outlet pipe is fixedly connected to the ballast tank, one end of the first manifold is fixedly arranged to the first liquid inlet pipe, a first control mechanism is arranged between the first manifold and the first liquid inlet pipe, and a second control mechanism is arranged between the second manifold and the first liquid outlet pipe.

[0006] Preferably, the first control mechanism includes a first shell, a first rotating valve core, a first flow channel, and a second liquid inlet pipe. The first shell is fixedly arranged between the first manifold and the first liquid inlet pipe. A first rotating valve core is movably arranged on the inner side of the first shell through a rotating shaft. A first flow channel is opened on the inner side of the first rotating valve core. A second liquid inlet pipe is fixedly arranged on one side of the surface of the first shell. The first control mechanism can be used to control the liquid inlet end of the ballast pump group to be connected with the first liquid inlet pipe or the second liquid inlet pipe through the first connecting pipe and the first manifold. The first liquid inlet pipe and the second liquid inlet pipe can also be controlled to be connected separately, so that the high-pressure water inside the ballast tank can flow from the second liquid inlet pipe to the first liquid inlet pipe under the action of gravity, and then be discharged into the sea from the first liquid inlet pipe.

[0007] Preferably, the second control mechanism includes a second shell, a second rotating valve core, a second flow channel, and a second liquid outlet pipe. The second shell is fixedly arranged between the second manifold and the second liquid outlet pipe. A second rotating valve core is movably arranged on the inner side of the second shell through a rotating shaft. A second flow channel is opened on the inner side of the second rotating valve core. A second liquid outlet pipe is fixedly arranged on one side of the surface of the second shell. The second control mechanism can control the liquid inlet end of the ballast pump group to be connected to the first liquid outlet pipe or the second liquid outlet pipe through the second connecting pipe and the second manifold.

[0008] Preferably, the first flow channel and the second flow channel are both "T"-shaped, and the first conduit and the second conduit can be connected to different pipelines according to different rotation angles of the first rotating valve core and the second rotating valve core through the "T"-shaped first flow channel and the second flow channel.

[0009] Preferably, a servo-controlled motor is provided on the outer side of the first shell and the second shell, and the power output shaft end of the servo-controlled motor is connected to the rotating shaft where the first rotating valve core and the second rotating valve core are located through a coupling, so that the servo-controlled motor can drive the first rotating valve core and the second rotating valve core to rotate; by driving the first rotating valve core and the second rotating valve core to rotate by the servo-controlled motor, the flow direction of the first flow channel and the second flow channel can be controlled.

[0010] Preferably, the liquid inlet end of the ballast pump group is mutually connected with the first liquid inlet pipe and the second liquid inlet pipe through the first connecting pipe, the first manifold, and the first control mechanism; the liquid outlet end of the ballast pump group is mutually connected with the second liquid outlet pipe through the second connecting pipe, the second manifold, the second control mechanism, the first liquid outlet pipe, and the second liquid outlet pipe;

[0011] The first liquid outlet pipe, the second liquid inlet pipe and the interior of the ballast tank are communicated with each other.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When the ballast water pressure inside the ballast tank needs to be relieved, the servo control motor can be used to drive the first rotating valve core to rotate, so that the first rotating valve core rotates into Figure 4 In the state shown, the first flow channel makes the first liquid inlet pipe and the second liquid inlet pipe communicate with each other, so that the first liquid inlet pipe and the second liquid inlet pipe are independently communicated, so that the high-pressure water inside the ballast tank can flow from the second liquid inlet pipe to the first liquid inlet pipe under the action of gravity, and then be discharged into the sea from the first liquid inlet pipe, thus achieving a pressure relief effect.

[0014] 2. The utility model can also achieve a second pressure relief state when releasing pressure, by rotating the first rotating valve core and the second rotating valve core respectively. Figure 5 , Figure 6 In the state shown, when the ballast pump group works again, water can be sucked from the ballast tank through the second liquid inlet pipe, the first manifold, and the first connecting pipe, and then pumped out through the second connecting pipe, the second manifold, and the second liquid outlet pipe, so that the ballast water inside the ballast tank can be quickly discharged from the second liquid outlet pipe into the sea under the action of the ballast pump group, which can significantly improve the overpressure protection effect of the ballast tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a ballast water tank overpressure protection structure of the utility model;

[0016] Figure 2 The utility model is a state view of the first rotating valve core in the ballast water tank overpressure protection structure Figure 1 ;

[0017] Figure 3 The utility model is a state view of the second rotating valve core in the ballast water tank overpressure protection structure Figure 1 ;

[0018] Figure 4 The utility model is a state view of the first rotating valve core in the ballast water tank overpressure protection structure Figure 2 ;

[0019] Figure 5 The utility model is a state view of the first rotating valve core in the ballast water tank overpressure protection structure Figure 3 ;

[0020] Figure 6 The utility model is a state view of the second rotating valve core in the ballast water tank overpressure protection structure Figure 2 .

[0021] In the figure: 1. ballast tank; 2. ballast pump group; 3. first connecting pipe; 4. first manifold; 5. second connecting pipe; 6. second manifold; 7. first liquid outlet pipe; 8. first liquid inlet pipe; 9. first shell; 10. first rotating valve core; 11. first flow channel; 12. second liquid inlet pipe; 13. second shell; 14. second rotating valve core; 15. second flow channel; 16. second liquid outlet pipe; 17. servo control motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-6 The utility model provides a technical solution: a ballast water tank overpressure protection structure, including a ballast tank 1, a ballast pump group 2 is arranged on one side of the ballast tank 1, a water supply pipeline system is arranged between the ballast pump group 2 and the ballast tank 1, and the water supply pipeline system includes a first connecting pipe 3, a first manifold 4, a second connecting pipe 5, a second manifold 6, a first liquid outlet pipe 7, and a first liquid inlet pipe 8. The first connecting pipe 3 is fixedly arranged on one side of the ballast pump group 2, and the first connecting pipe 3 is fixedly arranged at one end of the first connecting pipe 3. A second connecting pipe 5 is fixedly provided on the side of the ballast pump group 2 away from the first connecting pipe 3, a second manifold 6 is fixedly provided on one end of the second connecting pipe 5, a first liquid outlet pipe 7 is provided on the upper end of the second manifold 6, the first liquid outlet pipe 7 is fixedly connected to the ballast tank 1, one end of the first manifold 4 is fixedly provided with a first liquid inlet pipe 8, a first control mechanism is provided between the first manifold 4 and the first liquid inlet pipe 8, and a second control mechanism is provided between the second manifold 6 and the first liquid outlet pipe 7.

[0024] The first control mechanism comprises a first shell 9, a first rotating valve core 10, a first flow channel 11, and a second liquid inlet pipe 12. The first shell 9 is fixedly arranged between the first manifold 4 and the first liquid inlet pipe 8. The first rotating valve core 10 is movably arranged on the inner side of the first shell 9 through a rotating shaft. The first flow channel 11 is opened on the inner side of the first rotating valve core 10. The second liquid inlet pipe 12 is fixedly arranged on one side of the surface of the first shell 9. The first control mechanism can control the liquid inlet end of the ballast pump group 2 to be connected with the first liquid inlet pipe 8 or the second liquid inlet pipe 12 through the first connecting pipe 3 and the first manifold 4; the first liquid inlet pipe 8 and the second liquid inlet pipe 12 can also be controlled to be connected separately, so that the high-pressure water inside the ballast tank 1 can flow from the second liquid inlet pipe 12 to the first liquid inlet pipe 8 under the action of gravity, and then be discharged into the sea from the first liquid inlet pipe 8;

[0025] The second control mechanism comprises a second housing 13, a second rotating valve core 14, a second flow channel 15, and a second liquid outlet pipe 16. The second housing 13 is fixedly arranged between the second manifold 6 and the second liquid outlet pipe 16. The second rotating valve core 14 is movably arranged on the inner side of the second housing 13 through a rotating shaft. The second flow channel 15 is opened on the inner side of the second rotating valve core 14. The second liquid outlet pipe 16 is fixedly arranged on one side of the surface of the second housing 13. The second control mechanism can control the liquid inlet end of the ballast pump group 2 to be connected with the first liquid outlet pipe 7 or the second liquid outlet pipe 16 through the second connecting pipe 5 and the second manifold 6.

[0026] The first flow channel 11 and the second flow channel 15 are both in a "T" shape, and the first manifold 4 and the second manifold 6 can be connected to different pipelines according to different rotation angles of the first rotating valve core 10 and the second rotating valve core 14 through the "T"-shaped first flow channel 11 and the second flow channel 15;

[0027] A servo control motor 17 is disposed on the outside of the first housing 9 and the second housing 13. The power output shaft end of the servo control motor 17 is transmission-connected to the rotating shafts of the first rotating valve core 10 and the second rotating valve core 14 through a coupling, so that the servo control motor 17 can drive the first rotating valve core 10 and the second rotating valve core 14 to rotate; the flow directions of the first flow channel 11 and the second flow channel 15 can be controlled by driving the first rotating valve core 10 and the second rotating valve core 14 to rotate by the servo control motor 17;

[0028] The liquid inlet end of the ballast pump group 2 is mutually connected with the first liquid inlet pipe 8 and the second liquid inlet pipe 12 through the first connecting pipe 3, the first manifold 4, and the first control mechanism; the liquid outlet end of the ballast pump group 2 is mutually connected with the second liquid outlet pipe 7 and the second liquid outlet pipe 16 through the second connecting pipe 5, the second manifold 6, the second control mechanism;

[0029] The first liquid outlet pipe 7 , the second liquid inlet pipe 12 and the interior of the ballast tank 1 are communicated with each other.

[0030] Working principle: When the device is used, the first rotating valve core 10 and the second rotating valve core 14 are respectively Figure 2 , Figure 3 In the state shown, the ballast pump group 2 is working, and can absorb water from the sea through the first connecting pipe 3, the first manifold 4, and the first liquid inlet pipe 8, and then replenish water to the ballast tank 1 through the second connecting pipe 5, the second manifold 6, and the first liquid outlet pipe 7, so that ballast water is injected into the ballast tank 1;

[0031] When the ballast water inside the ballast tank 1 needs to be depressurized, the servo control motor 17 can be used to drive the first rotating valve core 10 to rotate, so that the first rotating valve core 10 rotates into Figure 4 In the state shown, the first flow channel 11 makes the first liquid inlet pipe 8 and the second liquid inlet pipe 12 communicate with each other, so that the first liquid inlet pipe 8 and the second liquid inlet pipe 12 are independently communicated, so that the high-pressure water inside the ballast tank 1 can flow from the second liquid inlet pipe 12 to the first liquid inlet pipe 8 under the action of gravity, and then be discharged into the sea from the first liquid inlet pipe 8, thus playing a pressure relief role;

[0032] The device can also achieve a second pressure relief state when releasing pressure, by rotating the first rotating valve core 10 and the second rotating valve core 14 respectively. Figure 5 , Figure 6 In the state shown, when the ballast pump group 2 works again, water can be sucked from the ballast tank 1 through the second liquid inlet pipe 12, the first manifold 4, and the first connecting pipe 3, and then pumped out through the second connecting pipe 5, the second manifold 6, and the second liquid outlet pipe 16, so that the ballast water inside the ballast tank 1 can be quickly discharged from the second liquid outlet pipe 16 into the sea under the action of the ballast pump group 2, thereby significantly improving the overpressure protection effect of the ballast tank 1.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] 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 ballast water tank overpressure protection structure, comprising a ballast tank (1), characterized in that: A ballast pump group (2) is provided on one side of the ballast tank (1); a water supply pipeline system is provided between the ballast pump group (2) and the ballast tank (1); the water supply pipeline system comprises a first connecting pipe (3), a first manifold (4), a second connecting pipe (5), a second manifold (6), a first liquid outlet pipe (7), and a first liquid inlet pipe (8); the first connecting pipe (3) is fixedly provided on one side of the ballast pump group (2); the first manifold (4) is fixedly provided at one end of the first connecting pipe (3); the ballast pump group (2) is away from the first connecting pipe ( A second connecting pipe (5) is fixedly arranged on one side of the ballast tank (3), a second manifold (6) is fixedly arranged on one end of the second connecting pipe (5), a first liquid outlet pipe (7) is arranged on the upper end of the second manifold (6), the first liquid outlet pipe (7) is fixedly connected to the ballast tank (1), one end of the first manifold (4) is fixedly arranged on a first liquid inlet pipe (8), a first control mechanism is arranged between the first manifold (4) and the first liquid inlet pipe (8), and a second control mechanism is arranged between the second manifold (6) and the first liquid outlet pipe (7).

2. The ballast water tank overpressure protection structure according to claim 1, characterized in that: The first control mechanism comprises a first housing (9), a first rotating valve core (10), a first flow channel (11), and a second liquid inlet pipe (12); the first housing (9) is fixedly arranged between the first manifold (4) and the first liquid inlet pipe (8); a first rotating valve core (10) is movably arranged on the inside of the first housing (9) via a rotating shaft; a first flow channel (11) is provided on the inside of the first rotating valve core (10); and a second liquid inlet pipe (12) is fixedly arranged on one side of the surface of the first housing (9).

3. The ballast water tank overpressure protection structure according to claim 2, characterized in that: The second control mechanism comprises a second housing (13), a second rotating valve core (14), a second flow channel (15), and a second liquid outlet pipe (16); the second housing (13) is fixedly arranged between the second manifold (6) and the second liquid outlet pipe (16); a second rotating valve core (14) is movably arranged on the inside of the second housing (13) via a rotating shaft; a second flow channel (15) is provided on the inside of the second rotating valve core (14); and a second liquid outlet pipe (16) is fixedly arranged on one side of the surface of the second housing (13).

4. The ballast water tank overpressure protection structure according to claim 3, characterized in that: The first flow channel (11) and the second flow channel (15) are both in a "T" shape.

5. The ballast water tank overpressure protection structure according to claim 4, characterized in that: A servo control motor (17) is disposed outside the first housing (9) and the second housing (13), and a power output shaft end of the servo control motor (17) is transmission-connected to a rotating shaft where the first rotating valve core (10) and the second rotating valve core (14) are located via a coupling, so that the servo control motor (17) can drive the first rotating valve core (10) and the second rotating valve core (14) to rotate.

6. The ballast water tank overpressure protection structure according to claim 5, characterized in that: The liquid inlet end of the ballast pump group (2) is in communication with the first liquid inlet pipe (8) and the second liquid inlet pipe (12) via the first connecting pipe (3), the first manifold (4) and the first control mechanism; the liquid outlet end of the ballast pump group (2) is in communication with the second liquid outlet pipe (7) and the second liquid outlet pipe (16) via the second connecting pipe (5), the second manifold (6), the second control mechanism.

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