Self-shrinkable LNG filling station leakage protection water curtain for dual-fuel oil tanker

Abstract

The application relates to the technical field of ship equipment, in particular to a self-shrinking LNG filling station leakage-proof water curtain for a dual-fuel oil tanker, which comprises a water curtain pipeline, a pipe support and a structure fixing part, the pipe support is fixedly installed on the structure fixing part, the water curtain pipeline is arranged along the length direction of the ship body and is rotationally installed on the pipe support, and a plurality of water flow holes are uniformly arranged on the water curtain pipeline along the length direction of the water curtain pipeline; a flow limiting device is arranged on the water curtain pipeline, the flow limiting device comprises a flow limiting cavity body fixed on the water curtain pipeline, the water flow hole is in communication with the flow limiting cavity body, and a water outlet groove is arranged on the side surface of the flow limiting cavity body along the length direction of the flow limiting cavity body. The water curtain pipeline is designed as a self-stretching and self-folding type, so that two states of storage and work exist, the problem that the water curtain pipeline occupies the ship width is solved, secondly, the dense circular holes on the water curtain pipeline are replaced by elliptical holes, the processing is facilitated, the holes are not prone to be blocked, and the angle range of the sprayed water flow is increased.

Description

Technical Field

[0001] This application relates to the technical field of marine equipment, and in particular to a leak-proof protective water curtain for a self-contracting LNG refueling station for dual-fuel tankers. Background Technology

[0002] Dual-fuel ships are vessels that can use both traditional fuels and new energy sources such as liquefied natural gas (LNG) as fuel. With increasing global awareness of emission reduction and environmental protection, the use of dual-fuel ships is becoming more widespread. According to regulations, dual-fuel ships need to be equipped with water curtain devices when refueling with LNG at LNG bunkering stations to prevent LNG leakage and damage to the hull plating due to excessively low temperatures.

[0003] A common water curtain system involves connecting marine fire-fighting water into a water curtain pipeline, which then sprays the LNG through round holes onto the outer hull plating. This creates a water curtain within the refueling area, diluting and flushing any leaked LNG away from the outer hull plating to prevent it from freezing.

[0004] Existing water curtain devices still have shortcomings: Firstly, the water curtain pipes are generally fixed outside the outer plate, which is unsightly and increases the width of the ship, making them unsuitable for ships on certain routes. Secondly, the numerous circular spray holes in the water curtain pipes, with their small diameters, make it difficult to wash away impurities, and the pipes themselves are also relatively complicated to manufacture.

[0005] Third, when fire water flows out through the round hole, the spray range will not be exactly as expected, which can easily lead to uneven thickness of the water curtain, and even some parts of the outer panel may not be covered, causing safety hazards.

[0006] Therefore, a leak-proof water curtain is needed for a self-contracting LNG refueling station for dual-fuel tankers. Utility Model Content

[0007] To address the problems mentioned in the background art, this application provides a self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers.

[0008] The technical solution for the self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers provided in this application is as follows: A self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers includes: water curtain pipes, pipe supports, and structural fasteners. The structural fasteners are fixed to the side of the hull. At least three pipe supports are fixedly mounted on the structural fasteners. The water curtain pipes are rotatably mounted on the three pipe supports, which are located at the middle and two ends of the water curtain pipes, respectively, thus ensuring the water curtain pipes are arranged along the length of the hull. A plurality of water flow holes are evenly distributed along the length of the water curtain pipes. A flow-limiting device is installed on the water curtain pipes. The device includes a flow-limiting cavity fixed to the water curtain pipe, the water outlet being connected to the flow-limiting cavity, and a water outlet groove being formed on the side of the flow-limiting cavity along its length. The water curtain pipe is provided with a handle for operating the rotation of the water curtain pipe. Rotating the water curtain pipe causes the flow-limiting cavity to rotate, moving the flow-limiting cavity to a side away from the hull side, so that the water outlet groove faces the water surface. Two pipe supports located at both ends of the water curtain pipe are provided with fixing components, which are used to fix the handle when the flow-limiting cavity is extended, thereby fixing the flow-limiting cavity.

[0009] Preferably, the water outlet is a flat ellipse, and the long side of the water outlet is arranged along the length of the water curtain pipe.

[0010] Preferably, the fixing assembly includes two fixing rods, both of which are fixed to the pipe rack. One fixing rod is vertically arranged and the other is horizontally arranged. Both fixing rods are provided with bolt holes. The two fixing rods are used to fix the handle in the horizontal and vertical states, respectively, and the handle is fixed to the fixing rods by bolt holes and bolts.

[0011] Preferably, a limiting baffle is provided on the pipe rack located in the middle of the water curtain pipe. When the water outlet groove on the flow limiting cavity faces the water surface, the limiting baffle abuts against the upper surface of the flow limiting cavity.

[0012] Preferably, the water outlet trough is connected to the side wall of the flow-limiting cavity away from the water curtain pipe, and the side wall of the flow-limiting cavity connected to the water outlet trough protrudes outward.

[0013] Preferably, a partition is provided between two adjacent water outlets.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. This application solves the problem of water curtain pipes occupying the ship's width by designing them as self-expanding types, allowing them to exist in both retracted and operational states; 2. In this application, the circular opening on the water curtain pipe is changed to a flat elliptical opening, which results in a larger spray range, greater spacing, and simpler processing; 3. In this application, each elliptical opening is separated by a partition to ensure that the water flow thickness is uniform within its respective range, making the overall water curtain formation more uniform. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers, as described in this application.

[0016] Figure 2 yes Figure 1 View from AA.

[0017] Figure 3 yes Figure 1 BB view.

[0018] Figure 4 yes Figure 1 CC view.

[0019] Figure 5 This is a schematic diagram of the water curtain pipe in the retracted state in this application.

[0020] Figure 6 yes Figure 5 This is a schematic diagram of the water curtain pipeline in operation in this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Water curtain pipe; 2. Pipe rack; 21. Fixing component; 211. Fixing rod; 3. Structural fastener; 4. Flow limiting device; 41. Flow limiting cavity; 411. Water outlet trough; 5. Baffle plate; 6. Water outlet hole; 7. Handle; 8. Limiting baffle; 9. Fire hose valve; 10. Fire hose. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0023] This application discloses a self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers. Referring to Figures 1-6, the protective water curtain includes: a water curtain pipe 1, pipe supports 2, and structural fasteners 3. The structural fasteners 3 are welded and fixed to the side of the hull. There are at least three pipe supports 2, all of which are fixed to the structural fasteners 3 by bolts and nuts. The water curtain pipe 1 is rotatably mounted on the three pipe supports 2, which are located in the middle and at the two ends of the water curtain pipe 1, respectively, so that the water curtain pipe 1 is arranged along the length of the hull. A plurality of water flow holes 6 are evenly opened along the length of the water curtain pipe 1. A flow limiting device 4 is provided on the water curtain pipe 1. The flow limiting device 4 includes a flow limiting cavity 41 fixed on the water curtain pipe 1. The water flow holes 6 are connected to the flow limiting cavity 41. A water outlet groove 411 is opened on the side of the flow limiting cavity 41 along its length. A handle 7 is provided on the water curtain pipe 1 for operating the rotation of the water curtain pipe 1. The flow-limiting cavity 41 is rotated, causing it to move to a side away from the hull side, so that the water outlet 411 faces the water surface. Fixing components 21 are installed on the two pipe supports 2 at both ends of the water curtain pipe 1. These components are used to fix the handle 7 when the flow-limiting cavity 41 extends, thereby fixing the flow-limiting cavity 41. Each fixing component 21 includes two fixing rods 211, both fixed to the pipe support 2. One fixing rod 211 is vertical, and the other is horizontal. Bolt holes are provided on both fixing rods 211, which are used to fix the handle 7 in the horizontal and vertical states, respectively. The handle 7 is fixed to the fixing rods 211 through the bolt holes and bolts. Rotating the handle 7 rotates the flow-limiting cavity 41, causing the water curtain pipe 1 to rotate. When the water outlet 411 faces the water surface, this application is in the working state. One end of the water curtain pipe 1 is sealed by a detachable blind flange, and the other end is connected to a fire water pipe for water supply through a hose. After the water flows through the hose into the water curtain pipe 1, it flows into the flow restriction cavity 41 through the water flow hole 6 and flows out from the water outlet 411 to form a water curtain. When the water outlet 411 faces the ship's side, this application is in the storage state.

[0024] Reference Figure 3 and Figure 4 The water outlet 6 is a flat ellipse, with its long side aligned along the length of the water curtain pipe 1. A partition 5 is installed between adjacent water outlets 6, welded to the water curtain pipe 1, ensuring a relatively uniform water thickness around each water outlet 6. The water outlet trough 411 is connected to the side wall of the flow-limiting cavity 41 away from the water curtain pipe 1. The side wall of the flow-limiting cavity 41 connected to the side wall of the water outlet trough 411 protrudes towards the side away from the flow-limiting cavity 41, thus ensuring that the sprayed water flows down along the side wall of the flow-limiting cavity 41.

[0025] Reference Figure 3A limiting baffle 8 is installed on the pipe rack 2 located in the middle of the water curtain pipe 1. When the water outlet 411 on the flow limiting cavity 41 faces the water surface, the limiting baffle 8 abuts against the upper surface of the flow limiting cavity 41, thereby preventing the water curtain pipe 1 from overturning and causing the water outlet 411 to face inward, endangering the safety of the crew.

[0026] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers, characterized in that: include: The system comprises a water curtain pipe (1), pipe supports (2), and structural fasteners (3). The structural fasteners (3) are fixed to the side of the hull. There are at least three pipe supports (2), all of which are fixedly installed on the structural fasteners (3). The water curtain pipe (1) is rotatably installed on the three pipe supports (2). The three pipe supports (2) are located in the middle and at the two ends of the water curtain pipe (1), respectively, so that the water curtain pipe (1) is arranged along the length of the hull. Several water flow holes (6) are evenly opened on the water curtain pipe (1) along its length. A flow limiting device (4) is provided on the water curtain pipe (1). The flow limiting device (4) includes a flow limiting cavity (41) fixed on the water curtain pipe (1). The water hole (6) is connected to the flow-limiting cavity (41). A water outlet groove (411) is provided on the side of the flow-limiting cavity (41) along its length. The water curtain pipe (1) is provided with a handle (7) for operating the water curtain pipe (1) to rotate. Rotating the water curtain pipe (1) drives the flow-limiting cavity (41) to rotate, so that the flow-limiting cavity (41) moves to the side away from the hull side, so that the water outlet groove (411) faces the water surface. The two pipe racks (2) located at the two ends of the water curtain pipe (1) are provided with fixing components (21). The fixing components (21) are used to fix the handle (7) when the flow-limiting cavity (41) is extended, thereby fixing the flow-limiting cavity (41).

2. The self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers according to claim 1, characterized in that: The water flow hole (6) is a flat ellipse, and the long side of the water flow hole (6) is set along the length of the water curtain pipe (1).

3. The self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers according to claim 1, characterized in that: The fixing component (21) includes two fixing rods (211), both of which are fixed on the pipe rack (2). One fixing rod (211) is set vertically and the other fixing rod (211) is set horizontally. Both fixing rods (211) are provided with bolt holes. The two fixing rods (211) are used to fix the handle (7) in the horizontal and vertical states, respectively. The handle (7) is fixed on the fixing rod (211) by bolt holes and bolts.

4. The self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers according to claim 1, characterized in that: A limiting baffle (8) is provided on the pipe rack (2) located in the middle of the water curtain pipe (1). When the water outlet groove (411) on the flow limiting cavity (41) faces the water surface, the limiting baffle (8) abuts against the upper surface of the flow limiting cavity (41).

5. The self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers according to claim 1, characterized in that: The water outlet trough (411) is connected to the side wall of the flow-limiting cavity (41) away from the water curtain pipe (1), and the side wall of the flow-limiting cavity (41) connected to the water outlet trough (411) protrudes outward.

6. The self-contracting LNG refueling station leak-proof protective water curtain for dual-fuel tankers according to claim 1, characterized in that: A partition (5) is provided between two adjacent water outlets (6).

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