Double-wall pipe ventilation structure of LNG (Liquefied Natural Gas) power-driven ship

Abstract

The utility model relates to the technical field of ships, in particular to a double-wall pipe ventilation structure of an LNG (Liquefied Natural Gas) power-driven ship, and aims to solve the problems that an existing ship runs in a marine environment for a long time, air is wet, marine air is used as a ventilation source for a long time, a ventilation pipe is corroded, a double-wall pipe connecting structure is simple, and cost is low. In order to solve the problems, the utility model provides the following scheme: the air inlet pipe comprises an air inlet pipe; the treatment box is fixedly installed on the gas inlet pipe, a gas pipe is fixedly connected to the treatment box, gas equipment is fixedly connected to one end of the gas pipe, and a first connecting pipe is fixedly installed on the treatment box; the filtering mechanism is arranged in the treatment box; according to the utility model, the plurality of flange plates are matched with each other between the internal threads and the external threads, so that the device can be connected more tightly, and meanwhile, after waste gas generated by gas equipment is cooled, air sucked into the device can be dried.

Description

Technical Field

[0001] The utility model relates to the technical field of ships, in particular to a double-wall pipe ventilation structure for LNG powered ships. Background Art

[0002] With the rapid development of the shipping industry in recent years, the problem of marine pollution has become increasingly serious. A large amount of untreated exhaust gas is discharged into the atmosphere, causing serious damage to the marine and even global ecological environment. In order to reduce the pollution caused by ship exhaust gas to the environment, the International Maritime Organization has proposed specific emission restrictions, hoping to improve the marine ecological environment by revising the emission restrictions. In order to adapt to the changes in emission restrictions, ships have begun to use cleaner and greener energy instead of traditional energy. LNG (Liquefied Natural Gas) has become the most suitable green fuel, and dual-fuel engines with LNG as the main fuel have also been widely used in the field of ships.

[0003] In the prior art, ships travel in the marine environment for a long time, and the air is relatively humid. Using marine air as a ventilation air source for a long time causes corrosion to the ventilation pipes. In addition, the double-wall pipe connection structure is relatively simple and is prone to deformation and damage under long-term operation.

[0004] Therefore, we proposed a double-walled pipe ventilation structure for LNG powered ships to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art that ships travel in the marine environment for a long time, the air is relatively humid, and the ventilation pipes are corroded by using the marine air as the ventilation air source for a long time, and the double-walled pipe connection structure is relatively simple and is prone to deformation and damage under long-term work, and a double-walled pipe ventilation structure for LNG powered ships is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-wall pipe ventilation structure for an LNG powered ship, comprising:

[0008] Intake pipe;

[0009] A processing box is fixedly installed on the air inlet pipe, a gas pipe is fixedly connected to the processing box, one end of the gas pipe is fixedly connected to the gas equipment, and a connecting pipe 1 is fixedly installed on the processing box;

[0010] A filtering mechanism is arranged in the processing box;

[0011] The cooling mechanism is arranged on the air pipe.

[0012] Preferably, a flange plate 1 is fixedly mounted on the connecting pipe 1, an external thread is arranged inside the connecting pipe 1, and the flange plate 1 and the external thread assist the connecting pipe 1 to be connected.

[0013] Preferably, a connecting pipe 2 is provided on the connecting pipe 1, a flange 2 is fixedly installed on the connecting pipe 2, and a plurality of connecting grooves are respectively provided on the flange 1 and the flange 2, so that the plurality of connecting grooves facilitate the fixing of the flange 1 and the flange.

[0014] Preferably, the connecting pipe 2 is provided with an internal thread, which is threadably connected to the external thread, and the internal thread and the external thread cooperate with each other to further enhance the connection effect.

[0015] Preferably, the filtering mechanism includes a plurality of filter screens, which are fixedly installed in the processing box, and the plurality of filter screens filter the inhaled ocean air to prevent debris from entering the device.

[0016] Preferably, a cooling pipe is fixedly mounted on the air pipe, a plurality of connecting handles are fixedly mounted on the cooling pipe, a fixing column is fixedly mounted on the plurality of connecting handles, and the plurality of connecting handles provide support for the fixing column.

[0017] Preferably, the cooling mechanism includes a motor, which is fixedly mounted on a fixed column, a fan blade 1 is fixedly mounted on the output shaft of the motor, a transmission shaft is fixedly mounted on the fan blade 1, and a fan blade 2 is fixedly mounted on the transmission shaft. The motor drives the fan blades 1 and 2 to operate via the transmission shaft to cool the exhaust gas.

[0018] Preferably, a drying port is provided in the processing box, and the drying port is connected to the air pipe, so that the cooled exhaust gas dries the air in the processing box through the drying port.

[0019] In the utility model, the beneficial effects of the double-walled pipe ventilation structure of an LNG powered ship are:

[0020] (1) The connection effect can be effectively increased by the mutual cooperation between multiple flanges, internal threads and external threads.

[0021] (2) The exhaust gas generated by the gas equipment can be cooled by the cooling mechanism, and the air in the suction device can be dried to reduce the air corrosiveness of the marine environment.

[0022] The utility model can realize a tighter connection of the device through the mutual cooperation between the internal threads and the external threads of the multiple flanges. At the same time, the exhaust gas generated by the gas equipment can be cooled to dry the air in the suction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural schematic diagram of a double-walled pipe ventilation structure for an LNG powered ship proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of a treatment box structure of a double-walled pipe ventilation structure for an LNG powered ship proposed in the utility model;

[0025] Figure 3 This is a schematic diagram of the cooling pipe structure of a double-walled pipe ventilation structure for an LNG powered ship proposed by the utility model.

[0026] In the figure: 1. Inlet pipe; 2. Processing box; 3. Connecting pipe 1; 4. Flange 1; 5. Connecting groove; 6. External thread; 7. Flange 2; 8. Connecting pipe 2; 9. Air pipe; 10. Cooling pipe; 11. Gas equipment; 12. Filter; 13. Drying port; 14. Connecting handle; 15. Fixing column; 16. Motor; 17. Fan blade 1; 18. Drive shaft; 19. Fan blade 2. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Embodiment 1

[0029] Reference Figure 1-Figure 3 , a double-wall pipe ventilation structure for an LNG powered ship, comprising:

[0030] Intake pipe 1;

[0031] The processing box 2 is fixedly mounted on the air inlet pipe 1, the processing box 2 is fixedly connected with an air pipe 9, one end of the air pipe 9 is fixedly connected with a gas device 11, and the processing box 2 is fixedly mounted with a connecting pipe 3;

[0032] A filtering mechanism is arranged in the processing box 2;

[0033] The cooling mechanism is arranged on the air pipe 9.

[0034] In the utility model, a flange 4 is fixedly mounted on a connecting pipe 3, an external thread is arranged inside the connecting pipe 3, and the flange 4 and the external thread assist the connecting pipe 3 to be connected.

[0035] In the utility model, a connecting pipe 2 8 is provided on the connecting pipe 1 3, a flange 2 7 is fixedly installed on the connecting pipe 2 8, and a plurality of connecting grooves 5 are respectively provided on the flange 1 4 and the flange 2 7, and the plurality of connecting grooves 5 facilitate the fixing of the flange 1 3 and the flange 7.

[0036] In the utility model, the connecting pipe 2 8 is provided with an internal thread 6, and the internal thread 6 is threadedly connected with the external thread. The internal thread 6 and the external thread cooperate with each other to further increase the connection effect.

[0037] In the utility model, the filtering mechanism includes a plurality of filter screens 12, and the plurality of filter screens 12 are fixedly installed in the processing box 2. The plurality of filter screens 12 filter the inhaled ocean air to prevent debris from entering the device.

[0038] In the utility model, a cooling pipe 10 is fixedly mounted on the air pipe 9 , a plurality of connecting handles 14 are fixedly mounted on the cooling pipe 10 , a plurality of connecting handles 14 are fixedly mounted on the fixing columns 15 , and the plurality of connecting handles 14 provide support for the fixing columns 15 .

[0039] In the utility model, the cooling mechanism includes a motor 16, which is fixedly mounted on a fixed column 15, a fan blade 17 is fixedly mounted on the output shaft of the motor 16, a transmission shaft 18 is fixedly mounted on the fan blade 17, and a fan blade 2 19 is fixedly mounted on the transmission shaft 18. The motor 16 drives the fan blade 17 and the fan blade 2 19 to operate through the transmission shaft 18 to cool the exhaust gas.

[0040] In the utility model, a drying port 13 is provided in the processing box 2 , and the drying port 13 is connected with the air pipe 9 , and the cooled waste gas dries the air in the processing box 2 through the drying port 13 .

[0041] In the utility model, external gas is sucked in through the air intake pipe 1, and the inhaled air is processed in conjunction with the multiple filters 12 and the drying port 13 in the processing box 2. The exhaust gas generated by the gas equipment 11 during operation is cooled by the fan blades 17 and the fan blades 19 in the cooling pipe 10 on the air pipe 9, and the temperature of the exhaust gas is reduced to a suitable temperature to avoid damage to the equipment caused by high-temperature gas. The air in the processing box 2 is dried through the drying port 13. The connecting pipe 1 3 is fixedly connected by the multiple connecting grooves 5 on the flange 1 4 and the flange 2 7. At the same time, the external thread 6 on the connecting pipe 2 8 is threadedly connected to the internal thread in the connecting pipe 3 to strengthen the connection effect.

[0042] Embodiment 2

[0043] The difference between this embodiment and the first embodiment is that sound insulation cotton is sleeved on both the first connecting pipe 3 and the second connecting pipe 8 to avoid noise pollution during processing.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A double-walled pipe ventilation structure for an LNG powered ship, characterized in that: include: Intake pipe (1); A processing box (2) is fixedly mounted on the air inlet pipe (1), a gas pipe (9) is fixedly connected to the processing box (2), one end of the gas pipe (9) is fixedly connected to a gas device (11), and a connecting pipe (3) is fixedly mounted on the processing box (2); A filtering mechanism is arranged in the processing box (2); The cooling mechanism is arranged on the air pipe (9).

2. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: A flange plate (4) is fixedly mounted on the connecting pipe (3), and an external thread is provided inside the connecting pipe (3).

3. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: The connecting pipe 1 (3) is provided with a connecting pipe 2 (8), a flange 2 (7) is fixedly mounted on the connecting pipe 2 (8), and a plurality of connecting grooves (5) are respectively provided on the flange 1 (4) and the flange 2 (7).

4. The double-walled pipe ventilation structure for an LNG powered ship according to claim 3 is characterized in that: The second connecting pipe (8) is provided with an internal thread (6), and the internal thread (6) is threadably connected to the external thread.

5. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: The filtering mechanism comprises a plurality of filter screens (12), and the plurality of filter screens (12) are fixedly installed in the processing box (2).

6. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: A cooling pipe (10) is fixedly mounted on the air pipe (9), a plurality of connecting handles (14) are fixedly mounted on the cooling pipe (10), and a fixing column (15) is fixedly mounted on the plurality of connecting handles (14).

7. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: The cooling mechanism comprises a motor (16), the motor (16) is fixedly mounted on a fixing column (15), a fan blade 1 (17) is fixedly mounted on an output shaft of the motor (16), a transmission shaft (18) is fixedly mounted on the fan blade 1 (17), and a fan blade 2 (19) is fixedly mounted on the transmission shaft (18).

8. The double-walled pipe ventilation structure for an LNG powered ship according to claim 1, characterized in that: A drying port (13) is provided in the processing box (2), and the drying port (13) is connected to the air pipe (9).

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