KR20080004807U - Vessel equipped funnel with exhaust nozzle - Google Patents

Abstract

The present invention is to provide a vessel comprising a funnel having a nozzle-shaped outlet to reduce the diameter in order to accelerate the discharge flow rate of the exhaust gas, the ship comprising a funnel for discharging the exhaust gas.

According to the present invention, the outlet of the funnel is formed in the form of a nozzle having a smaller diameter to increase the exhaust flow rate of the exhaust gas, thereby preventing the exhaust gas from reaching the wheel house, thereby securing the steering wheel's visibility, and important facilities of ships such as the wheel house. There is an advantage that can prevent the back is contaminated with soot.

Funnel, Nozzle, Exhaust Gas

Description

Vessel equipped funnel with exhaust nozzle

1 is a side view showing a stern part of a vessel in which a conventional funnel is located.

FIG. 2 is an enlarged view in which A of FIG. 1 is enlarged.

3A is a schematic diagram showing the flow of exhaust gas under forward wind.

3B is a schematic diagram showing the flow of exhaust gas in the reverse wind.

Figure 4 is a side view showing a vessel including the outlet of the funnel according to the present invention.

            <Description of the symbols for the main parts of the drawings>

100 main engine 200 funnel casing

211: funnel outlet 213: funnel inlet

The present invention relates to a ship including a funnel for discharging the exhaust gas, and more particularly, the exhaust port of the ship funnel by forming the discharge port of the discharge funnel by increasing the exhaust flow rate of the exhaust gas by forming a nozzle shape of a smaller diameter A funnel having a funnel having a nozzle-shaped outlet for preventing the back from reaching and the like.

In general, a ship is propelled by a propeller and moved forwards or backwards, which is operated by a diesel engine (or steam turbine) located primarily in the ship's engine compartment. In addition, when sailing for a long time by the ship is constantly required power, the power is also supplied by a generator located in the engine room of the ship.

However, since the exhaust gas is generated when the diesel engine (or the steam turbine) and the generator are driven, the ship needs a funnel for discharging the exhaust gas generated by the diesel engine (or the steam turbine) and the generator.

1 is a side view showing a stern part of a vessel in which a conventional funnel is located.

FIG. 2 is an enlarged view in which A of FIG. 1 is enlarged.

An engine room 10 in which the diesel engine 11 and the like are installed is located below the stern portion, and an upper deck 13 is located above the engine room 10. The residence port 14 inhabited by the ship's passengers is located on the upper deck 13. The residence port 14 is composed of six floors, including a wheel house 20 which is located at the top and controls the direction of travel of the ship, and is located from the stern side bulkhead of the cargo hold 18 located at the rear end. It is positioned to extend toward the stern.

The upper part of the wheel house 20 is located a radar mast 21 to facilitate communication with the outside, the radar mast 21 can be folded. This is to lower the height of the vessel when the vessel passes through the bridge.

An engine room casing 19 is located at the stern side of the inlet 14, and various equipments such as a boiler and an exhaust device may be located in the engine room casing 19.

A funnel casing 30 is located above the engine room casing 19 and a diesel engine 11 (or a steam turbine) and power located inside the engine room 10 of the ship above the funnel casing 30. The funnel 40 for discharging the exhaust gas discharged from the supply generator to the outside of the hull is located.

As shown in FIGS. 1 and 2, the general diameter of the outlet of the funnel 40, which is a standard, is about 2100 mm, and the outlet of the funnel 40 is not inclined vertically but is inclined about 30 ° in the stern direction. .

The funnel 40 is inclined about 30 ° in the stern direction so that the exhaust gas does not reach the residence port 14 and the wheel house 20 as much as possible, thus creating a comfortable living environment for the riders and improving the view of the helmsman. To secure.

However, the above method has a limit in preventing the exhaust gas from reaching the wheel house or the like. To prevent this, increase the height of the funnel

It is most preferable to discharge the exhaust gas at a high position, but the height of the funnel of the ship is limited by the height of the bridge, etc. located in the transportation route of the ship, so that the height of the funnel of the ship cannot be increased indefinitely to exhaust the exhaust gas. There is a problem.

The present invention is to solve the above problems, to provide a ship that prevents the exhaust gas from reaching the wheel house by increasing the exhaust flow rate of the exhaust gas by forming the discharge port of the funnel of the vessel in the form of a nozzle of a smaller diameter. It is.

An object of the present invention as described above, in the ship comprising a funnel for discharging the exhaust gas, it characterized in that it comprises a funnel having a nozzle-shaped outlet to reduce the diameter so that the discharge flow rate of the exhaust gas is accelerated Realized by the ship.

3A is a schematic diagram showing the flow of exhaust gas under forward wind.

3B is a schematic diagram showing the flow of exhaust gas in the reverse wind.

<Table 1> is a table showing the relationship between the diameter of the funnel and the height of the exhaust gas.

<Table 1> <Wind speed: 20 knots>

As shown in Table 1, when the wind speed is based on 20 knots, the exhaust gas height increases as the diameter of the funnel decreases.

At this time, the forward direction shown in Table 1 indicates the direction of the wind blowing from the bow, the reverse direction indicates the direction of the wind blowing from the stern.

As the diameter of the funnel decreases as described above, the height of the exhaust gas increases because the exhaust velocity of the exhaust gas increases when the diameter of the funnel decreases with respect to the constant amount of the exhaust gas by the continuous flow of the fluid.

The height H of the exhaust gas refers to the distance from the top of the funnel of the vessel to the center of the exhaust gas flow at the highest position of the exhaust gas, as shown in FIGS. 3A and 3B.

When the height H of the exhaust gas is increased, the amount of exhaust gas reaching the wheel house or the like is relatively smaller than when the height H of the exhaust gas is low, which is effective for securing the helmsman's visibility and preventing contamination of the wheel house.

<Table 2> is a table showing the size and dropping point of soot due to the exhaust gas of the ship.

<Table 2>

 As shown in <Table 2>, when the wind blows from the stern (reverse direction), soot having a size within 0.5mm to 10mm accumulates not only in the outlet of the funnel but also in the container loaded on the bow and the stern. I can see that.

The soot refers to a particulate matter in which free carbon generated during combustion condenses to have a particle diameter of 1 micron or more. As shown in Table 2, the soot within 0.5 mm to 10 mm ( soot) accumulates in the funnel, ship's various facilities and contaminates the ship.

This damage of soot can also be prevented by increasing the height of the exhaust gas.

Therefore, the ship according to the present invention is characterized in that the outlet (outlet) of the funnel is formed in the form of a nozzle of decreasing diameter to increase the discharge rate of the exhaust gas to discharge the exhaust gas at a high position.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

Figure 4 is a side view showing a vessel including the outlet of the funnel according to the present invention.

As shown in FIG. 4, the diameter of the funnel 212 in the funnel casing 200 is 2100 mm and the diameter of the end of the outlet 211 of the funnel is 1700 mm, which has a nozzle shape in which the cross-sectional area of the flow path through which the exhaust gas passes is narrowed. have.

Due to the continuous flow of fluid, the flow rate of the exhaust gas is greatly increased at the outlet 211 of the funnel having a narrow cross-sectional area of the flow path, and exhaust gas having a high flow rate is discharged into the atmosphere.

Therefore, by forming the outlet of the funnel in the form of a nozzle under the same conditions of wind speed and direction, the funnel diameter, etc., the exhaust flow rate of the exhaust gas is greatly increased, and thus the height of the exhaust gas (H in FIGS. 3A and 3B) is increased. It is possible to effectively prevent the exhaust gas from reaching the wheel house or the like.

In fact, the exhaust gas flow rate at the outlet 211 (diameter 1700 mm) of the funnel is about twice the exhaust gas flow rate at the inlet 213 (diameter 1500 mm) of the funnel into which the exhaust gas flows from the main engine 100.

Although the preferred embodiment according to the present invention has been described above, the diameter of the funnel outlet of another embodiment may have various values such that the flow rate of the exhaust gas at the outlet of the funnel increases according to the type and size of the vessel.

As described above, according to the ship according to the present invention by forming the outlet of the funnel in the form of a nozzle with a smaller diameter to increase the exhaust flow rate of the exhaust gas to prevent the exhaust gas from reaching the wheel house, etc. to secure the visibility of the helmsman There is an advantage that it is possible to prevent pollution of soot and other important facilities of ship such as wheel house.

Claims (2)

In a ship comprising a funnel for exhausting exhaust gas, And a funnel having a nozzle-shaped discharge port whose diameter decreases to accelerate the discharge flow rate of the exhaust gas.  The method of claim 1, The discharge port of the funnel is characterized in that the inclination in the stern direction.

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