Ballast water drainage assembly for fore peak of bulk cargo ship

Abstract

The utility model relates to a bulk cargo ship fore peak ballast water drainage component in the field of bulk cargo ships, which comprises a drainage pipe, a neutralizer output pipe is mounted in the drainage pipe and obliquely extends from the peripheral side of the drainage pipe to the central axis of the drainage pipe, and the extension line of the neutralizer output pipe deviates from the central axis of the drainage pipe. The neutralizer output pipe extends towards one side of the water outlet of the discharge pipe; a first turbulent flow ring is fixedly installed on the side, close to a water outlet of the discharging pipe, of a pipe opening of the neutralizer output pipe, the first turbulent flow ring and the discharging pipe are coaxially arranged, and by the adoption of the structures of the neutralizer output pipe, the first turbulent flow ring and the like, neutralizer is input into the middle area in the discharging pipe; therefore, the neutralizer can be quickly and uniformly diffused and mixed with the ballast water; meanwhile, the neutralizer and the ballast water generate radial convection under the turbulent flow action of the first turbulent flow ring, so that the aim of improving the mixing effect and the mixing efficiency of the neutralizer and the ballast water is achieved.

Description

Technical Field

[0001] This utility model relates to a ballast water drainage assembly for the bow tip of a bulk carrier, and particularly to a ballast water drainage assembly for the bow tip of a bulk carrier used in the field of bulk carriers. Background Technology

[0002] As one of the most important components of a ship's systems, the purpose of ballast water systems is to: adapt to various loading conditions, accommodate appropriate displacement, draft, trim and list, maintain certain navigation performance, obtain appropriate restoring force, and reduce excessive bending moments and shear forces.

[0003] To address the issue of ballast water failing to drain smoothly from the bow tip tanks on both sides of the emergency fire pump room, a certain bulk carrier's bow tip tank ballast water drainage system employs a ballast water suction pipe design, which has a certain market share.

[0004] Chinese utility model patent CN203958540U discloses a ballast water drainage system for the forecastle tank of a bulk carrier, including a forecastle tank, an odometer compartment, a forecastle, a ballast water suction pipe, a shut-off valve, a butterfly valve, and a hand pump. The ballast water suction pipe is located inside the forecastle tank and is equipped with a shut-off valve. After passing through the shut-off valve, the ballast water suction pipe is divided into two paths leading to the stern and is respectively located on the port and starboard sides of the odometer compartment. Both the port and starboard suction pipes are equipped with butterfly valves. The hand pump works in conjunction with the butterfly valves and is located inside the forecastle. This ballast water drainage system for the forecastle tank of a bulk carrier, by dividing the ballast water suction pipe of the forecastle tank into two paths on the port and starboard sides, drains water sequentially through the port and starboard sides, maximizing the discharge of ballast water from both sides.

[0005] In existing ballast water drainage systems, to prevent the TRO concentration in the discharged ballast water from exceeding a preset concentration (usually below 0.1 ppm), the system will activate a neutralization unit to inject a neutralizing agent into the drainage pipe to treat the discharged ballast water and ensure that the discharged ballast water meets the discharge standards. However, the existing neutralizing agent is usually injected outside the discharge pipe, while the water in the discharge pipe flows in a columnar manner, resulting in poor mixing between the neutralizing agent and the ballast water, and failing to achieve rapid and efficient treatment of the ballast water. Utility Model Content

[0006] In view of the above-mentioned prior art, the technical problem to be solved by this utility model is how to design a ballast water drainage component that can quickly mix the neutralizing agent and ballast water, so as to achieve rapid and efficient treatment of ballast water and ensure that the discharged ballast water meets the discharge standards.

[0007] To solve the above problems, this utility model provides a ballast water drainage assembly for the bow tip of a bulk carrier, including a discharge pipe, a neutralizing agent output pipe installed inside the discharge pipe, the neutralizing agent output pipe extending obliquely from the periphery of the discharge pipe toward the central axis of the discharge pipe, the extension line of the neutralizing agent output pipe deviating from the central axis of the discharge pipe, and the neutralizing agent output pipe extending toward the outlet side of the discharge pipe.

[0008] A first turbulence ring is fixedly installed on the side of the neutralizer output pipe near the outlet of the discharge pipe. The first turbulence ring is coaxial with the discharge pipe and is a double-convex ring with a large inward protrusion in cross section.

[0009] In the aforementioned ballast water drainage assembly for the bow tip of a bulk carrier, a neutralizing agent is introduced into the central region of the discharge pipe via a neutralizing agent outlet pipe, thereby enabling the neutralizing agent to diffuse rapidly and uniformly and mix with the ballast water. Simultaneously, the neutralizing agent and ballast water generate radial convection under the turbulence of the first turbulence ring, thereby improving the mixing effect and efficiency of the neutralizing agent and ballast water.

[0010] As a further improvement of this application, a second turbulence ring is fixedly installed on the side of the first turbulence ring near the outlet of the discharge pipe. The second turbulence ring is coaxially arranged with the first turbulence ring, and the second turbulence ring is a double convex ring with a larger outward protrusion of the cross section.

[0011] As a further improvement of this application, a mixing pipe is fixedly connected to the end of the discharge pipe via a flange structure. The mixing pipe is coaxially arranged with the discharge pipe, and the neutralizing agent output pipe is fixedly inserted through the periphery of the mixing pipe.

[0012] As a further improvement of this application, a neutralizing agent delivery ring is sleeved on the outside of the mixing tube, and multiple neutralizing agent output tubes are arranged in a circumferential array along the axis of the mixing tube. One end of each of the multiple neutralizing agent output tubes extends to the outside of the mixing tube and is fixed and connected to the neutralizing agent delivery ring.

[0013] As another improvement of this application, the neutralizing agent output pipe includes a through-pipe section and a spiral section. The through-pipe section is fixedly inserted through the periphery of the mixing pipe, and the spiral section is integrally formed with the through-pipe section at one end inside the mixing pipe. The spiral section extends in a conical spiral shape, and the extension line of the spiral section deviates from the central axis of the mixing pipe.

[0014] As another improvement of this application, both the first turbulence ring and the second turbulence ring are located inside the mixing tube, and a support rod is fixed to the outside of both the first turbulence ring and the second turbulence ring. The other end of the support rod is fixed to the inner wall of the mixing tube.

[0015] In summary, by using a neutralizing agent outlet pipe to input the neutralizing agent into the central region of the discharge pipe, the neutralizing agent is enveloped by ballast water. As the ballast water carries the neutralizing agent, it can quickly and uniformly diffuse and mix with the ballast water. Simultaneously, when flowing through the first turbulence ring, the mixture is separated into inner and outer layers under the turbulence of the first turbulence ring, generating a pressure difference. This causes radial relative flow and tumbling between the inner and outer layers of the mixture, resulting in a more uniform mixing of the mixture itself. This achieves the goal of improving the mixing effect and mixing efficiency of the neutralizing agent and ballast water. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application;

[0017] Figure 2 This is a cross-sectional view of the discharge pipe, mixing pipe, first turbulence ring, and second turbulence ring according to an embodiment of this application.

[0018] Figure 3 This is a side view of the neutralizer outlet pipe and the neutralizer delivery ring pipe according to an embodiment of this application;

[0019] Figure 4 This is a three-dimensional structural diagram of the neutralizer output pipe and the neutralizer delivery ring pipe according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the mixing and flow of ballast water and neutralizing agent according to an embodiment of this application.

[0021] Explanation of the labels in the diagram:

[0022] 1 Discharge pipe, 2 Mixing pipe, 3 Neutralizer output pipe, 301 Pipe section, 302 Spiral section, 4 Neutralizer delivery ring pipe, 5 First turbulence ring, 6 Second turbulence ring, 7 Support rod. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] Implementation method:

[0025] Figure 1-5 A ballast water drainage assembly for the bow tip tank of a bulk carrier is shown, including a discharge pipe 1, a neutralizing agent output pipe 3 installed inside the discharge pipe 1, the neutralizing agent output pipe 3 extending obliquely from the periphery of the discharge pipe 1 toward the central axis of the discharge pipe 1, the extension line of the neutralizing agent output pipe 3 deviating from the central axis of the discharge pipe 1, and the neutralizing agent output pipe 3 extending toward the outlet side of the discharge pipe 1.

[0026] A first turbulence ring 5 is fixedly installed on the side of the outlet of the discharge pipe 1 near the outlet of the neutralizer output pipe 3. The first turbulence ring 5 is coaxially arranged with the discharge pipe 1 and is a double convex ring with a large inward protrusion in the cross section.

[0027] Based on the above structure, the neutralizing agent is input into the central region of the discharge pipe 1 through the neutralizing agent output pipe 3, so that the neutralizing agent is surrounded by ballast water. As the ballast water carries the neutralizing agent, it can quickly and evenly diffuse and mix with the ballast water (the mixture of neutralizing agent and ballast water is called a mixture). At the same time, when flowing through the first turbulence ring 5, the mixture is separated into inner and outer layers under the turbulence of the first turbulence ring 5, and a pressure difference is generated. This causes the inner layer (columnar water flow) and the outer layer (annular water flow) of the mixture to generate radial relative flow and tumbling, thereby making the mixture itself more uniform, so as to improve the mixing effect and mixing efficiency of the neutralizing agent and ballast water.

[0028] Furthermore, a second turbulence ring 6 is fixedly installed on the side of the first turbulence ring 5 near the outlet of the discharge pipe 1. The second turbulence ring 6 is coaxially arranged with the first turbulence ring 5, and the second turbulence ring 6 is a double convex ring with a larger outward protrusion of the cross section.

[0029] By adding a second turbulence ring 6 and making the second turbulence ring 6 protrude in a different direction from the first turbulence ring 5, the mixture passing through the second turbulence ring 6 generates a pressure difference in a different direction than when passing through the first turbulence ring 5. This changes the inward and outward turbulence direction of the mixture and promotes secondary radial convection of the mixture, which can further improve the mixing efficiency and mixing effect of ballast water and neutralizing agent, and ensure that the discharged ballast water meets the corresponding discharge standards.

[0030] Furthermore, the end of the discharge pipe 1 is fixedly connected to the mixing pipe 2 via a flange structure. The mixing pipe 2 is coaxially arranged with the discharge pipe 1, and the neutralizing agent output pipe 3 is fixedly inserted through the periphery of the mixing pipe 2.

[0031] The first turbulence ring 5 and the second turbulence ring 6 are both located inside the mixing tube 2. Support rods 7 are fixed to the outside of the first turbulence ring 5 and the second turbulence ring 6, and the other end of the support rods 7 is fixed to the inner wall of the mixing tube 2.

[0032] By setting a detachable mixing tube 2, the neutralizer output tube 3, the first turbulence ring 5, and the second turbulence ring 6 can all be disassembled along with the mixing tube 2. This makes it easy to install and remove the mixing tube 2, the neutralizer output tube 3, the first turbulence ring 5, and the second turbulence ring 6. The installation is convenient, and the maintenance is easier, resulting in better performance.

[0033] Furthermore, a neutralizing agent delivery ring pipe 4 is sleeved on the outside of the mixing pipe 2, and multiple neutralizing agent output pipes 3 are arranged in a circumferential array along the axis of the mixing pipe 2. One end of each of the multiple neutralizing agent output pipes 3 extends to the outside of the mixing pipe 2 and is fixed and connected to the neutralizing agent delivery ring pipe 4. The neutralizing agent delivery ring pipe 4, together with the multiple neutralizing agent output pipes 3, can achieve uniform distribution and delivery of the neutralizing agent, so that the neutralizing agent can be evenly distributed inside the ballast water when it is delivered, providing a good foundation for the rapid and uniform mixing of the neutralizing agent and the ballast water.

[0034] Furthermore, the neutralizer output pipe 3 includes a through-pipe section 301 and a spiral section 302. The through-pipe section 301 is fixedly inserted through the periphery of the mixing pipe 2. The spiral section 302 is integrally formed with the through-pipe section 301 at one end inside the mixing pipe 2. The spiral section 302 extends in a conical spiral shape, and the extension line of the spiral section 302 is deviated from the central axis of the mixing pipe 2.

[0035] By setting the spiral section 302, the neutralizer output pipe 3 can not only deliver the neutralizer to the interior of the ballast water, but also make the neutralizer form a spiral motion path tangential to the flow direction of the ballast water when it is output. This allows the output neutralizer to diffuse more quickly from the central area of ​​the ballast water to the outer area. At the same time, it can reduce the impact of the neutralizer input on the flow of the ballast water, so that the ballast water can maintain smooth flow after mixing with the neutralizer.

[0036] In light of current practical needs, the above-described embodiments adopted in this application are not limited to this scope of protection. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A bulk carrier bow peak ballast water discharge assembly comprising a discharge pipe (1) in which a neutralizing agent delivery pipe (3) is mounted, characterized in that: The neutralizing agent output pipe (3) extends obliquely from the side of the discharge pipe (1) to the central axis of the discharge pipe (1), the extension line of the neutralizing agent output pipe (3) deviates from the central axis of the discharge pipe (1), and the neutralizing agent output pipe (3) extends towards the water outlet side of the discharge pipe (1); The pipe opening of the neutralizing agent output pipe (3) is fixedly installed with a first turbulence ring (5) on the side close to the water outlet of the discharge pipe (1), the first turbulence ring (5) is coaxially arranged with the discharge pipe (1), and the first turbulence ring (5) is a double-convex ring body with a large inward protruding cross section.

2. A bulk carrier bow peak ballast water discharge assembly according to claim 1, characterized in that: The first turbulence ring (5) is fixedly installed with a second turbulence ring (6) on the side close to the water outlet of the discharge pipe (1), the second turbulence ring (6) is coaxially arranged with the first turbulence ring (5), and the second turbulence ring (6) is a double-convex ring body with a large outward protruding cross section.

3. A bulk carrier bow peak ballast water discharge assembly according to claim 1, characterized in that: The terminal end of the discharge pipe (1) is fixedly connected with a mixing pipe (2) through a flange structure, the mixing pipe (2) is coaxially arranged with the discharge pipe (1), and the neutralizing agent output pipe (3) fixedly penetrates the side of the mixing pipe (2).

4. A bulk carrier bow peak ballast water discharge assembly according to claim 3, characterised in that: The mixing pipe (2) is provided with a neutralizing agent conveying ring pipe (4) on the outside, the neutralizing agent output pipe (3) is provided with a plurality of and is distributed in a circular array along the axis of the mixing pipe (2), and one end of the plurality of neutralizing agent output pipes (3) extends to the outside of the mixing pipe (2) and is fixedly connected with and communicates with the neutralizing agent conveying ring pipe (4).

5. A bulk carrier bow peak ballast water discharge assembly according to claim 4, characterised in that: The neutralizing agent output pipe (3) comprises a pipe penetrating section (301) and a spiral section (302), the pipe penetrating section (301) fixedly penetrates the side of the mixing pipe (2), one end of the spiral section (302) located in the mixing pipe (2) is integrally formed with the pipe penetrating section (301), the spiral section (302) extends in a tapered spiral shape, and the extension line of the spiral section (302) deviates from the central axis of the mixing pipe (2).

6. A bulk carrier bow peak ballast water discharge assembly according to claim 2, characterized by: The first turbulence ring (5) and the second turbulence ring (6) are located in the mixing pipe (2), and the first turbulence ring (5) and the second turbulence ring (6) are fixedly provided with support rods (7) on the outside, and the other ends of the support rods (7) are fixed to the inner wall of the mixing pipe (2).

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