KR20150063216A

KR20150063216A - Rear type icebreaking support device for ice covered water operating vessel

Info

Publication number: KR20150063216A
Application number: KR1020130147379A
Authority: KR
Inventors: 전병영
Original assignee: 현대중공업 주식회사
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2015-06-09

Abstract

It is possible to effectively prevent the collision between the ice pieces and the ship and to eliminate the need to install an additional microbicide removing device in the ice area where the compressed air is sprayed in various directions at different positions while spraying the compressed air in the stern direction of the ice- A stern type icebreaking auxiliary device for the ship of operation is introduced. The stern type icebreaking auxiliary device of the ice-marine-service ship is provided with a main air spraying pipe having one end formed with an outlet and each having a stern side surface of the hull, and an air pump connected to the other end of the main air spraying pipe, And an auxiliary air spraying pipe branching from the main air spraying pipe and having an outlet connected to a lower part of the stern so as to inject air toward both sides of the propeller on the aft bottom side.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a stern type ice-

More particularly, the present invention relates to an ice making vessel capable of reducing the pressure of the lower portion of the ice when the ice making machine is operated so as to collide with the ice sheet, and to prevent the ice sheet from entering the bottom or entering the vicinity of the propeller The present invention relates to a stern type icebreaking auxiliary device for an ice-

For ships operating in the waters and polar regions, collisions with the ice sheet occur from time to time in the athlete's area.

In this case, the ice pieces flowing into the ship's bottom are not only subjected to ice resistance during operation but also collide with the propeller of the stern, thereby causing damage to the stern propeller and causing noise and vibration.

On the other hand, an icebreaking assistance device for pushing ice pieces to the outside of a ship by using a water jet pump has recently been proposed for a bow of a ship.

The bow type ice making auxiliary apparatus using a conventional water jet pump applied to a bow of a ship has a structure in which a seawater flow tube 10 'extending to the left and right of the bow of the ship 100' is formed as shown in FIG. 1, The water jet pump 30 'is connected to a water jet pump 30' for injecting seawater at a high pressure at one end of the water jet pump 30 '. The seawater jetted from the water jet pump 30' So that it is possible to easily switch the ship in the left and right direction.

The ship bow type icebreaking auxiliary device using such a water jet pump was applicable only when the ship sails only in the forward direction.

However, in the case of an ice-marine vessel, the propulsion engine may be configured to rotate 360 degrees so that it can also be operated in a stern direction in the reverse direction. In such a vessel, in addition to the conventional bow type ice- Installation of the device was required. In addition, if the ship is operating in the stern direction, the possibility that the ice pieces will collide with the propeller of the stern can be increased.

On the other hand, in order to balance the ship in general, the sea water called the equilibrium of the ship is contained in the water tank inside the ship. In the case of the ship which operates in various seas, the seawater is carried on the ship to the other sea, .

Therefore, as a countermeasure to prevent ecosystem disturbance, a device for removing microorganisms in water tank and equilibrium water of ships is installed in large ships. In case of ships operating in some countries, it is obligatory to remove microorganisms from ship ballast water and water tank And the International Maritime Organization has decided to mandate the installation of ship ballast water treatment systems on all ships constructed after 2017.

Considering that international regulations on the water tank inside the ship are becoming strict, there is a need to introduce an ice-breaker assist device using an air jet pump, rather than using an existing ice- Respectively.

Korean Patent Publication No. 2012-0056062 (2012.06.01.)

The present invention has been proposed in order to meet the above-mentioned need and to solve the problems, and it is an object of the present invention to provide an ice making system for a ship, which is configured to inject compressed air in a stern direction of an ice- And it is an object of the present invention to provide an ice crushing assistance device for an ice-marine-service ship in which an additional microbial removal device is not required.

In order to accomplish the above object, according to an embodiment of the present invention, there is provided a stern type icebreaking assistance device for an ice-breaking marine vessel, comprising: a main air spraying pipe having one end formed with an outlet, An air pump connected to the other end and injecting air at a high pressure; and an outlet connected to the air pump or branched from the main air injection pipe so as to inject air toward both sides of the aft propeller, And an auxiliary air injection tube.

Preferably, at least one of the outlet of the main air spraying tube and the outlet of the auxiliary air spraying tube is provided with a direction adjusting nozzle capable of adjusting the direction of air to be sprayed.

Preferably, the air pump is connected to a water eliminator for removing water contained in the air introduced into the air pump.

According to the icebreaking auxiliary apparatus of the ice-marine navigation ship as described above, the compressed air is sprayed to assist the icebreaking operation in the ice ship, and the ice cubes are sprayed in various directions, , It is possible to obtain an effect that installation of an additional microorganism removing device is not required.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing an ice-making auxiliary apparatus using a conventional water jet pump. Fig.
FIG. 2 is a view showing the structure of a stern type icebreaking auxiliary device for an ice-marine navigation ship according to an embodiment of the present invention in the direction of the top surface of the ship. FIG.
3 is a side view of a ship showing the structure of a stern type icebreaking auxiliary device for an ice-marine navigation ship according to an embodiment of the present invention.

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

FIG. 1 is a view showing an ice crushing auxiliary apparatus using a conventional water jet pump, FIG. 2 is a view showing the structure of a stern type icebreaking auxiliary apparatus for an ice-marine navigation ship according to an embodiment of the present invention, FIG. 3 is a side view of the ship showing the structure of a stern type icebreaking auxiliary apparatus for an ice ship in accordance with an embodiment of the present invention.

2 and 3, a stern type icebreaking assistance device for an ice-making marine vessel includes a main air injection pipe 100, an air pump 200, and an auxiliary air injection pipe 300.

One end of the main air spraying pipe 100 is formed as a pair and the other end of the main air spraying pipe 100 is connected to the front and rear sides of the hull 10, The ice pieces 2 are moved away from the hull 10 by blowing air toward the ice pieces 2 floating at a height of 1 mm.

The main air injection pipe 100 serves as a path for air to be formed in a tubular shape and is preferably made of a metal material in consideration of durability, but may be made of a synthetic resin material or other materials.

The air pump 200 is connected to the other end of the main air injection pipe 100 and receives external air through an air inlet I formed on the upper surface of the hull 10, Spray at high pressure. Since the specific structure of the air pump 200 is known to those skilled in the art, a detailed description thereof will be omitted. Further, if the air pump 200 is configured to be capable of jetting air at a high pressure, the air pump 200 may have a variety of structures and operating modes.

The auxiliary air injection pipes 300 may be formed as a pair and may be independently connected to the air pump 200 or branched from the pair of main air injection pipes 100. The auxiliary air injection pipe 300 is connected to an outlet at a lower portion of the stern so as to inject air toward both side portions of the propeller at the lower aft aft portion of the auxiliary air injection pipe 300 and flows into the bottom surface of the hull 10, P by moving the ice cubes 3 away from the propeller P by blowing air toward the ice cubes 3 to be hit.

The auxiliary air injection pipe 300 serves as a path for air to be formed in a tubular shape and is preferably made of a metal material in consideration of durability, but may be made of a synthetic resin material or other materials.

Preferably, at least one of the outlet of the main air injection tube 100 and the outlet of the auxiliary air injection tube 300 is provided with a direction adjusting nozzle N for adjusting the direction of the air to be injected. This directional control nozzle N may be provided, for example, so as to be movable in the direction of arrow A as shown in FIG. 2, and such a specific nozzle installation structure may be implemented in various manners, such as using a motor or using a cylinder And the detailed structure thereof is known to those skilled in the art, so a detailed description thereof will be omitted.

The directional control nozzle N extends the jet range of the air injected from the outlet of the main air injection pipe 100 so that ice pieces scattered in a wider area can be pushed out to the outside of the ship. The direction change of the regulating nozzle N may be configured to be automatically switched by an electrical signal.

In addition, the direction change of the direction adjusting nozzle N is based on the change of direction to the horizontal direction (direction along the arrow H) as shown in FIG. 2, but in order to more effectively push the ice piece, The direction can also be changed to the vertical direction (the direction along the arrow V) as shown in FIG. 6A, and furthermore, the direction can be changed also in the direction in which the horizontal direction and the vertical direction are combined.

It is preferable that the air pump is connected to a water eliminator (400) for removing moisture contained in the air introduced into the air pump. When moisture contained in the air is removed through the water eliminator 400, it is possible to prevent freezing in the main air injection tube 100 or the auxiliary air injection tube 300 due to low temperature air.

In the case of an ice-breaker auxiliary apparatus using a conventional water-jet pump, the sea water flow pipe may be frozen. However, in the case of a stern type ice-breaker auxiliary apparatus according to the present invention, the possibility of freezing due to use of air becomes very small. However, even if air is used, there is a possibility that the main air injection tube 100 or the auxiliary air injection tube 300 will freeze due to the moisture contained in the air. To prevent such a freezing phenomenon, ) Is preferably applied.

According to the stern type icebreaking auxiliary apparatus of the present invention, since the compressed air is sprayed in the stern direction of the ice vessel, It is possible to effectively prevent the collision between the ice pieces and the vessel, and it is possible to obtain an effect that the installation of an additional microorganism removing device is not required.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that the invention may be variously modified and changed.

10: Hull
100: Main air injection tube
200: Air pump
300: auxiliary air injection pipe
400: Moisture eliminator
N: Orientation nozzle

Claims

A main air injection pipe having one end formed with an outlet and each connected to a stern side of the hull;
An air pump connected to the other end of the main air injection pipe to inject air at a high pressure; And
An auxiliary air spraying pipe connected to the air pump or branched from the main air spraying pipe and having an outlet connected to a lower portion of the stern so as to inject air toward both sides of a propeller on the aft bottom side;
And a stern type icebreaking auxiliary device for an ice ship.

The method according to claim 1,
Wherein at least one of an outlet of the main air spraying pipe and an outlet of the auxiliary air spraying pipe is provided with a direction adjusting nozzle capable of adjusting the direction of air to be sprayed.

3. The method according to claim 1 or 2,
Wherein the air pump is connected to a water eliminator for removing water contained in the air introduced into the air pump.