KR101732194B1

KR101732194B1 - Funnel for ship having exhaust gas flow straighter and drill ship having the funnel

Info

Publication number: KR101732194B1
Application number: KR1020110145671A
Authority: KR
Inventors: 안유원; 한명륜; 이강훈
Original assignee: 현대중공업 주식회사
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2017-05-04
Also published as: KR20130077125A

Abstract

The present invention relates to a ship funnel having a gas flow straightener and a drill ship having the funnel. The funnel includes: a funnel pipe for passing a combustion gas generated in an engine room of a ship through the inside thereof and discharging the combustion gas; A plurality of openings for dividing the flow cross section of the funnel pipe into a plurality of openings, the open end of the funnel pipe extending in a longitudinal direction of the funnel pipe, And a flow straightener having a predetermined sectional shape in the longitudinal direction of the funnel pipe.
In the funnel for a ship having the gas flow straightener of the present invention as described above, since the gas flow straightener that straightens the flow of the exhaust gas and increases the flow rate is built in the funnel pipe, the exhaust gas can be raised So that the inconvenience due to the exhaust gas can be solved even if the height of the funnel device is low.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a funnel for ships having a gas flow straightener and a drill ship having the funnel,

The present invention relates to a ship funnel having a gas flow straightener and a drill ship having the funnel.

As in the case of general tankers, cargo ships, or large passenger ships, the engine room of the drill ship is equipped with diesel engines, steam turbines, or generators or boilers that produce electricity to propel the ship. Since such an apparatus generates exhaust gas during its operation, a funnel device for smoothly discharging the exhaust gas to the outside of the engine room is essentially applied to the ship.

The funnel device basically includes a funnel pipe for passing the exhaust gas into the inside thereof and discharging it into the air. The funnel pipe extends as high as possible to the upper portion of the ship so that the exhaust gas does not move into the steering room or the cabin or sink down to the deck, and the upper end portion is bent in the stern direction.

FIG. 1 is a view showing a conventional drill ship 11 having a conventional funnel pipe 19.

Referring to FIG. 1, it can be seen that the funnel unit 17 is located at the aft part of the drill ship 11, in which the drilling tower 13 and a plurality of cranes 15 are installed. The funnel device 17 is for discharging the combustion gas generated in the engine room in the ship body 12 to the atmosphere and has a funnel pipe 19 for discharging the combustion gas to the outside. The funnel pipe 19 is bent so as to discharge the combustion gas to the rear of the ship and to prevent rain.

The drill ship 11 is provided with a plurality of cranes 15 on the deck so that the boom of the crane 15 can be moved to the funnel pipe 19 while the crane 15 is moving, The funnel pipe 19 is installed as low as possible.

However, when the funnel pipe 19 is installed at a low level as described above, the combustion gas discharged from the funnel pipe 19 can not reach the atmosphere and can be laid low. For this reason, there was a problem that when the backward wind (wind blowing in the aft direction from the stern) is blown, the exhaust gas flows to the forward side, which may cause inconvenience to the deck worker.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a gas flow straightener for rectifying the flow of exhaust gas by increasing the flow rate of the exhaust gas, The present invention provides a ship funnel having a gas flow straightener capable of solving inconveniences caused by exhaust gas even if the duct is low, and a drill ship having the funnel.

In order to accomplish the above object, the present invention provides a ship funnel having a gas flow straightener, comprising: a funnel pipe for passing combustion gas generated in an engine room of a ship through the duct; A plurality of openings for dividing the flow cross section of the funnel pipe into a plurality of openings, the open end of the funnel pipe extending in a longitudinal direction of the funnel pipe, And a flow straightener having a predetermined cross-sectional shape in the longitudinal direction of the funnel pipe.

The flow straightener may have a cross-sectional shape extending in the radial direction toward the inner circumferential surface of the funnel pipe with respect to the central axis of the funnel pipe.

Further, the flow straightener has a lattice-like cross-sectional shape.

In addition, the flow straightener is fixed to the inner circumferential surface of the funnel pipe by welding.

The flow straightener may be detachably inserted into the funnel pipe through a supporting means.

Further, the supporting means comprises: A ring member which surrounds and fixes the upper end of the flow straightener, and a holding piece which is fixed to the ring member and is hooked on an upper end of the funnel pipe.

Further, the flow straightener is provided with a through hole through which a hook for a crane can be hooked.

According to another aspect of the present invention, there is provided a drill ship which is installed in a funnel pipe of a ship, passes a combustion gas flowing in a funnel pipe in a longitudinal direction of the funnel pipe, straightens a flow of the combustion gas, A funnel including a plurality of partition plates dividing a flow cross section of the funnel pipe into a plurality of openings, the funnel including a flow straightener having a predetermined cross-sectional shape in the longitudinal direction of the funnel pipe.

In the funnel for a ship having the gas flow straightener of the present invention as described above, since the gas flow straightener that straightens the flow of the exhaust gas and increases the flow rate is built in the funnel pipe, the exhaust gas can be raised So that the inconvenience due to the exhaust gas can be solved even if the height of the funnel device is low.

1 is a view showing a drill ship to which a conventional funnel device is applied.
2 is a view showing a drill ship to which a ship funnel having a gas flow straightener according to an embodiment of the present invention is applied.
3 is a perspective view of a ship funnel according to an embodiment of the present invention.
4 is an exploded perspective view of the funnel shown in Fig.
5 is a view showing another example of the funnel shown in FIG.
6 is a perspective view showing the assembly of the funnel shown in FIG.
7 is a cross-sectional view showing another example of a funnel according to an embodiment of the present invention.
8 is a cross-sectional view showing another example of a funnel according to an embodiment of the present invention.
FIG. 9 is a perspective view showing the upper ring shown in FIG. 5 separately.

Hereinafter, one embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a view showing a drill ship to which a ship funnel having a gas flow straightener according to an embodiment of the present invention is applied

Hereinafter, the same reference numerals as those of the above-mentioned reference numerals denote the same members having the same function.

As shown in the figure, a drill ship 31 having a funnel device 33 having a gas straightener according to the present embodiment includes a ship main body 12 having an engine room (not shown) built therein, A drilling tower 13 disposed on the deck of the ship 12 and a plurality of cranes 15 located in the periphery of the drilling tower 13 and a crane 15 installed at the stern of the ship body 12, And a funnel unit 33 to which a flow straightener 35 to be described later is applied to pass the combustion gas into the inside thereof and discharge it to the atmosphere.

The flow straightener 35 is applied to the inside of the upper end of the funnel pipe 19. The flow straightener 35 rectifies the flow of the exhaust gas coming from the engine room to increase the flow velocity so as to increase the kinetic energy .

The exhaust gas that has passed through the flow straightener 35 is lifted sufficiently from the funnel pipe 19 in a state in which kinetic energy is imparted, and is blown into the air by the wind. The maximum rising height of the exhaust gas may be several times higher than the height of the funnel pipe 19 although it depends on the surrounding air density or the wind.

For reference, as shown in the drawing, the approximately middle height portion of the funnel pipe 19 is bent backward. The reason why the funnel pipe 19 is bent as described above is to block the rainwater from being struck by the funnel pipe 19 as much as possible. It is needless to say that the position of the bending portion may vary depending on circumstances.

The flow straightener 35 provided inside the upper end of the funnel pipe 19 is formed by welding a plurality of flat plate members and has a predetermined sectional shape in the longitudinal direction of the funnel pipe 19 as described later, To pass the exhaust gas in its longitudinal direction and to impart the exhaust gas with a straightness.

The shape and size of the propagator 35 may vary widely.

FIG. 3 is a perspective view of a ship funnel 41 having a gas flow straightener according to an embodiment of the present invention, and FIG. 4 is an exploded view of the funnel 41 shown in FIG.

As shown in the drawing, the funnel 41 having the gas flow straightener according to the present embodiment includes a funnel pipe 19 for passing the combustion gas generated in the engine room of the ship through the inside thereof and discharging it, And a flow straightener 35 for passing the combustion gas flowing in the funnel pipe 19 in the longitudinal direction while straightening the flow of the combustion gas so as to increase the flow velocity.

The flow straightener 35 is welded to metal diaphragms 35a having a predetermined thickness and is fixed to the inner peripheral surface of the funnel pipe 19 to provide a plurality of divided exhaust passages 35c. The flow straightener 35 of this embodiment extends in the longitudinal direction of the funnel pipe 19 and has a predetermined cross-sectional shape.

Each of the diaphragms 35a constituting the flow straightener 35 is a metal plate having a certain thickness and width and one end in the width direction of the flow straightener 35 is welded at the central axis portion of the funnel pipe 19 and welded in a radial direction And the other end is coupled to the inner circumferential surface of the funnel pipe 19. The flow straightener 35 and the funnel pipe 19 are fixed by welding.

The flow straightener 35 may be made of stainless steel.

The flow straightener 35 fixed inside the funnel pipe 19 in the above manner forms a plurality of exhaust passages 35c partitioned with respect to each other in the funnel pipe 19.

Therefore, the combustion gas in the turbulent follow flow coming from the engine room in the ship passes through the exhaust passage 35c to be straightened to some extent and is imparted with straightness. As the gas flow is straightened, the kinetic energy increases and the flow velocity becomes somewhat faster. As the kinetic energy of the gas increases, the inertial force also increases. This means that the arrival height of the exhaust gas flowing out of the funnel 41 in the atmosphere is also increased.

FIG. 5 is a view showing another example of the funnel 41 shown in FIG. 3, and FIG. 6 is a perspective view showing the assembled funnel shown in FIG.

The funnel 41 shown in Fig. 5 is of a type in which the flow straightener 35 can be attached to and detached from the funnel pipe 19, unlike the funnel shown in Fig.

To this end, the flow straightener 35 has an upper ring 37 and a lower ring 39 at the upper and lower ends thereof.

The upper ring 37 and the lower ring 39 are welded to the side end portions of the respective partition plates 35a and closely contact the inner circumferential surface of the funnel pipe 19. [ It goes without saying that the structural strength of the flow straightener 35 is increased by applying the upper and lower rings 37 and 39 as described above. The upper ring (37) and the lower ring (39) are made of the same metal as the diaphragm (35a).

In particular, the upper and lower rings 37 and 39 are detachably fitted into the funnel pipe 19, but are not fixed through welding or the like. This means that the flow straightener 35 can be attached to and detached from the funnel pipe 19. That is, the flow straightener 35 can be detached from the funnel pipe 19 for repair or replacement.

Particularly, it is preferable that the upper and lower rings 37 and 39 are firmly coupled to the funnel pipe 19 so that no noise is generated during the vibration of the funnel pipe 19. The manner in which the upper and lower rings 37 and 39 are joined to the funnel pipe 19 can vary widely.

In order to stably maintain the flow straightener 35 in the funnel pipe 19, a plurality of fastening pieces 38 are fixed to the upper ring 38. The engaging piece 38 is a portion that is fitted to the distal end portion 19b of the funnel pipe 19 when the flow straightener 35 is attached to the funnel pipe 19. [

The flow straightener 35 does not fall into the funnel pipe 19 and is stably positioned in the upper part of the upper ring 37. As a result, &Lt; / RTI >

In addition, a through hole 35b is formed in any one of the plurality of partition plates 35a. The through hole 35b is a hole into which a hook (not shown) of the crane is fitted. The flow straightener 35 can be lifted using a crane.

FIG. 9 shows the upper ring 37 of FIG. 5 separately.

As shown in the figure, a plurality of latching pieces 38 are fixed to the outer circumferential surface of the upper ring 37. It goes without saying that the type and number of the latching pieces 38 may vary depending on the case.

7 is a longitudinal sectional view of a funnel 41 showing another example of a funnel according to an embodiment of the present invention.

As shown in the figure, a flow sprayer 35 is provided to provide a plurality of rectangular cross-sectional discharge passages 35c in the funnel pipe 19. The flow straightener 35 is manufactured by welding a plurality of diaphragms 35a, and has a predetermined sectional shape in the longitudinal direction. The cross section of the flow straightener 35 is lattice-shaped and passes the exhaust gas through an exhaust passage 35c partitioned with respect to each other to straighten the flow of the exhaust gas.

8 is a longitudinal sectional view of a funnel 41 showing another example of a funnel according to an embodiment of the present invention.

The flow straightener 35 in the funnel 41 shown in Fig. 8 also has a lattice-shaped cross-sectional shape produced by welding a plurality of diaphragms 35a. The diaphragms 35a are welded at right angles to each other to provide a plurality of exhaust passages 35c isolated from each other. The exhaust gas passes through the exhaust passage 35c and is guided so as to have a straight flow.

As a result, the funnel 41 according to the present embodiment configured as described above has a flow straightener 35 formed of a plurality of diaphragms 35a inside the funnel pipe 19, The flow height of the exhaust gas can be increased by straightening the flow of the exhaust gas discharged through the exhaust passage 35c.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

11: Drill ship 12: Ship body
13: Drilling Tower 15: Crane
17: Funnel device 19: Funnel pipe
19b: leading end 31: drill ship
33: Funnel device 35: Flow Straightener
35a: diaphragm 35b: through hole
35c: exhaust passage 37: upper ring
38: engaging piece 39: bottom ring
41: Funnel

Claims

A funnel pipe for passing the combustion gas generated in the engine room of the ship through the inside thereof and discharging the same,
A plurality of openings for dividing the flow cross section of the funnel pipe into a plurality of openings, the open end of the funnel pipe extending in a longitudinal direction of the funnel pipe, And a flow straightener having a predetermined sectional shape in the longitudinal direction of the funnel pipe,

The flow straightener,
A ring member for wrapping and fixing the upper end of the flow straightener and a support means including a retaining member fixed to the ring member and hooked on an upper end of the funnel pipe, Wherein said gas flow straightener has a gas flow straightener.

The method according to claim 1,
The flow straightener,
Sectional shape extending in the radial direction toward the inner circumferential surface of the funnel pipe with respect to the central axis of the funnel pipe.

The method according to claim 1,
The flow straightener,
Wherein the gas flow straightener has a lattice-like cross-sectional shape.

delete

The method according to claim 1,
Wherein the flow straightener is provided with a through hole through which a hook for a crane can be hooked.

A funnel pipe for passing the combustion gas generated in the engine room of the ship through the inside thereof and discharging the same,
A plurality of openings for dividing the flow cross section of the funnel pipe into a plurality of openings, the open end of the funnel pipe extending in a longitudinal direction of the funnel pipe, And a flow straightener having a predetermined sectional shape in the longitudinal direction of the funnel pipe,

The flow straightener,
A ring member for wrapping and fixing the upper end of the flow straightener and a support means including a retaining member fixed to the ring member and hooked on an upper end of the funnel pipe, A drill ship having a funnel containing a gas flow straightener.