KR20160031788A - Arrangement structure of compartment for echo-sounder and speed log and lng carrier for artic having the arrangement structure - Google Patents

Abstract

The present invention relates to an arrangement structure of a compartment for an echo sounder and a speed log of an LNG carrier for a polar region and an LNG carrier for a polar region having the same. The arrangement structure of a compartment for an echo sounder and a speed log of an LNG carrier for a polar region is described as follows. When a compartment for an echo sounder and a speed log is arranged in a hull, the compartment for an echo sounder and a speed log is arranged between a pipe duct and a ballast tank. An explosion-proof space is formed between a cargo hold and the compartment for an echo sounder and a speed log to separate the cargo hold and the compartment from each other and effectively prevents gas from flowing into the cargo hold and the compartment as the explosion-proof space can be used as a double partition. The explosion-proof space is connected to the pipe duct to be used as a space for a pipe and a cable.

Description

TECHNICAL FIELD [0001] The present invention relates to an LNG carrier for polarity, an arrangement of compartments for installing an echo sounder and a line indicator of an LNG carrier for polar use, and an arrangement structure of the compartment. THE ARRANGEMENT STRUCTURE}

The present invention relates to an arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polar use, and more particularly, to an arrangement structure for installing an echo sounder and a line indicator mounting compartment on a hull, An echo canceller and a line indicator mounting compartment are arranged so that an explosion proof space is formed between the cargo hold and the echo indicator and the line indicator mounting compartment to separate the cargo hold and the echo indicator and the compass mounting compartment, To an arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity which can effectively prevent the inflow of gas.

With the loss of Arctic sea ice due to global warming, there is an increasing interest in north-eastern route near Russia and north-west route near Canada.

The Arctic Sea region is well known as a new tourist attraction and has been actively studied for the development of polar routes for transportation, distribution and tourism due to the development of polar oil fields.

The US, Canada, Russia, Denmark, and Norway, which are neighboring countries of the Arctic Ocean, have led the related studies to develop the Arctic Sea Route, where about 25% of the world's underground resources are buried and time and distance are shortened by more than 30% .

According to data released by researchers in the United States and Canada, the current Arctic sea route is expected to reach 2% of the world's ship traffic by 2030 and reach 5% by 2050, but the recent Arctic sea route There is a great possibility that the opening period will be gradually advanced.

Unlike general waters, polar waters have a special feature of the ice sheet environment. Therefore, it is necessary to take environmental risk into consideration in addition to the research and development of component parts. In particular, ships operating in the Arctic Ocean need access from the aspect of safe operation, since potential risk factors are scattered rather than when operating in the sea area.

The environmental conditions in polar waters are very difficult to develop due to the average atmospheric temperature reaching about -52 ° C and many icebergs floating in extreme solar radiation. The fore part of a polar ship operating mainly in the polar regions has an icebreaking function. The tip of the bow with icebreaking function is inclined at the tip of the bow around the planned load line to allow the ice to ice up by the vertical shear force when the ship passes the section where ice sheets of constant thickness exist.

In the meantime, three methods are mainly used for the water depth measurement, such as a method using a sound wave, a method using a laser, and a method using an underwater photograph. A method using a sound wave and a laser is used for making an undersea map, For underwater research, a method using underwater photographs is used.

The method using sound waves is performed by echo sounding, which is a method commonly used in ships, and observes the time of round trip of the sound signal from the water surface to the seabed to determine the depth of water.

There are two types of echo sounder (or depth meter): Single Beam Echo Sounder, and Multibeam Echo Sounder. Multi-beam Echo Sounder is a single-beam method. Only a single ultrasonic wave is emitted from a transducer. On the other hand, multi-beam method is more difficult to measure precisely due to frequent occurrence of missing parts even if the vessel is operated very slowly. On the other hand, multi-beam method measures more than 100 ultrasonic waves from a transceiver at the same time, The undersea feature corresponding to 7 times width can be measured perfectly without missing part. These surveying depth gauges measure the depth of water by passing high frequency sound waves in the range of about 200KHz to 450KHz through water.

The echo sounder shall meet the following installation conditions. That is, there should be no protruding structures that interfere with the propagation around, and it should be installed flat with the shell surface for smooth operation and accurate measurement, and the structure of the compartment should be constructed, Consideration should be given to sufficient space and traffic for maintenance, and if necessary, a suitable size W / Tight Manhole should be installed referring to the safety plan.

FIG. 1 is a vertical sectional view of a center line showing an arrangement structure of an echo sounder and a line indicator mounting compartment in a conventional LNG carrier, and FIG. 2 is a plan view showing an arrangement structure of an echo sounder and a line indicator mounting compartment in a conventional LNG carrier. Fig.

1 and 2, in an arrangement structure of an echo sounder and a line indicator mounting compartment in a conventional LNG carrier, the center of the flat bottom 10 of the hull, on the basis of the center line L, An echo sounder and a line indicator 31 are installed in the compass 20 for mounting the echo sounder and the line speed indicator.

In the case of the LNG carriers operating in the polar regions, sounders are installed to measure the water depth using sound waves. In the case of the recently developed LNG carrier for polarity, the linearity is increased due to the rising of the bow member to favor the ice breaking. It is difficult to arrange the sounding machine and the compulsory compartment for installing the line indicator in the bow area in the ship having such a linear shape.

3 is a vertical cross-sectional view of a center line for explaining an arrangement structure of a compartment for installing an echo sounder and a line indicator in a conventional polar-field LNG carrier.

As shown in FIG. 3, in the case of an LNG carrier for polarity, a linear shape is formed in which a bow portion is lifted so as to be advantageous for ice breaking, and a slant is formed in a sloping manner. However, since the bow portion is inclined, ice load The damper of the echo sounder and the line indicator is likely to occur. Therefore, proper positioning of the echo sounder and the line support device is required.

The installing position of the sounding device and the line indicator mounting compartment 20 installed on the flat bottom is gradually moved from the forward side to the stern side so that the sounding device and the line speed indicator having no explosion proof structure are moved to the cargo hold 40 So that the risk of explosion increases.

In order to solve the above-described problems, the present invention is characterized in that, when the echo sounder and the yaw indicator mounting compartment are arranged on the hull, a compartment for mounting the echo indicator and the yaw indicator is disposed between the pipe duct and the ballast tank, And the line indicator mounting compartment, the cargo hold is separated from the compartment for mounting the echo indicator and the speed indicator, and serves as a double partition wall to effectively prevent the inflow of gas, And to provide an arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity which can be connected to a pipe duct and used as a space of a pipe and a cable.

In order to achieve the above object, the present invention provides an arrangement structure of an echo sounder and a line indicator mounting compartment in a linear form having no flat bottom in a bow region, wherein a cargo hold for storing LNG is formed inside the hull, Wherein a pipe duct is disposed along the longitudinal direction of the hull at a lower center of the cargo hold, a ballast tank is disposed at both sides and a lower portion of the cargo hold, and the compartment for mounting the sounding indicator and the speed indicator is connected to the pipe duct And the explosion-proof space is formed between the cargo hold and the compass for mounting the sound indicator and the speed indicator.

The explosion-proof space may be configured to be connected to the pipe duct.

The inside of the sounding device and the line indicator mounting compartment is configured to be able to pass (approach) through the pump room.

The explosion-proof space may be configured to be connected to the ballast tank.

INDUSTRIAL APPLICABILITY As described above, the present invention separates the cargo hold, the echo sounder and the speed indicator mounting compartment from each other by forming one room, i.e., a separate explosion proof space, on the upper part of the echo sounder and the line indicator mounting compartment It acts as a double bulkhead to effectively prevent the inflow of gas.

In addition, according to the present invention, the explosion-proof space can be utilized as a space for a pipe and a cable by connecting to a pipe duct.

Further, according to the present invention, in the linear shape of the polar ship for which the bow is raised and slopingly formed, the damages of the echo sounder and the line indicator can be effectively prevented even if the ice load greatly acts on the bow.

Fig. 1 shows the arrangement structure of an echo sounder and a line indicator mounting compartment in a conventional LNG carrier, and shows a vertical sectional view taken along the center line of the hull.
FIG. 2 shows the arrangement structure of an echo sounder and a line indicator mounting compartment in a conventional LNG carrier. FIG. 2 is a longitudinal sectional view
Fig. 3 is a longitudinal sectional view showing the arrangement structure of a compartment for installing an echo sounder and a line indicator in a conventional LNG carrier for polarity,
FIG. 4 shows the arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to the first embodiment of the present invention. FIG. 4 is a vertical cross-
FIG. 5 shows the arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to the first embodiment of the present invention, and is a longitudinal sectional view
6 is a plan view showing the arrangement of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to the first embodiment of the present invention and showing installation of an echo sounder and a line indicator in a flat bottom
Fig. 7 shows the arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to a second embodiment of the present invention. Fig. 7 is a longitudinal sectional view

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

4 is a vertical cross-sectional view taken along the center line of the hull, showing an arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to the first embodiment of the present invention, FIG. 3 is a vertical cross-sectional view showing the arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to the first embodiment of the present invention.

4 and 5, the polar LNG carriers according to the present invention are linear in which there is no flat bottom in the bow region, that is, in the linear type, which is formed by sloping up the bow portion so as to be advantageous for ice breaking, And has a disposition structure of indicator mounting compartments.

In the arrangement structure of the sounder and the line indicator mounting compartment 110 of the polar LNG carrier according to the first embodiment of the present invention, a cargo hold (cargo tank) 40 for storing LNG is formed inside the ship do.

A pipe duct 120 is disposed along the longitudinal direction of the hull at a lower center of the cargo hold 40. A ballast tank 130 is disposed at both sides and below the cargo hold 40.

The sounding device and the yaw indicator mounting compartment 110 are disposed between the pipe duct 120 and the ballast tank 130. The cargo hold 40 and the eclipse indicator and the yaw indicator mounting compartment 110, The explosion-proof space 121 is formed between the upper and lower surfaces. The explosion-proof space 121 is configured to be connected to the pipe duct 120.

The inside of the echo canceller and the line indicator mounting compartment 110 can pass (approach) in the direction of the arrow through the pump room. That is, a manhole 111 is formed on one side of the sounding machine and the line indicator mounting compartment 110, and the manhole 111 is connected to the pump room.

As described above, since the bow portion of the LNG carrier for polarity is inclined, the mounting position of the sounder installed on the flat bottom gradually moves toward the rear of the hull.

That is, as the echo sounder & speed log moves to the place without the outer curved surface, it is disposed in a hazardous area adjacent to the cargo hold 40, It is impossible to install the echo sounder and line indicator (30, 31) because the gas may enter the adjacent area.

Hazardous area should be equipped with explosion-proof equipment designed to avoid explosion, but echo sounder (30) and line indicator (31) should be designed not to be dangerous area because there is no corresponding explosion-proof equipment.

In the arrangement structure of the echo sounder and the line indicator mounting compartment 110 of the LNG carrier for polarity according to the first embodiment of the present invention constructed as described above, The cargo hold 40 and the sound indicator and the compulsory compartment 110 are separated from each other and serve as a double partition wall to effectively prevent the inflow of gas .

Also, by connecting the explosion-proof space 121 to the pipe duct 120, it can be used as a space for pipes and cables.

7 is a vertical cross-sectional view showing the arrangement structure of an echo sounder and a line indicator mounting compartment of an LNG carrier for polarity according to a second embodiment of the present invention, taken along the direction of the hull.

7, in an arrangement structure of an echo sounder and a line indicator mounting compartment 210 of an LNG carrier for polarity according to the second embodiment of the present invention, a cargo hold (not shown) for storing LNG 40 are formed.

A pipe duct 220 is disposed in the lower center of the cargo hold 40 along the longitudinal direction of the hull and a ballast tank 230 is disposed at both sides and below the cargo hold 40.

The echo sounder and the yaw indicator mounting compartment 210 are disposed between the pipe duct 220 and the ballast tank 230 so that the cargo hold 40 and the echo indicator, The explosion-proof space 231 is formed between the upper and lower plates 210 and 210. The explosion-proof space 231 is configured to be connected to the ballast tank 230.

In the arrangement structure of the echo sounder and the line indicator mounting compartment 210 of the LNG carrier for polarity according to the second embodiment of the present invention constructed as described above, A separate explosion proof space 231 is formed to separate the cargo hold 40 and the eccentric cord and the speed indicator mounting compartment 210 and to effectively prevent the inflow of gas by acting as a double partition wall .

In addition, in the explosion-proof space 231, residual water may remain in ballasting, so that it is preferable that a sloped surface 231a is formed on the bottom surface of the explosion-proof space 231 to prevent water from flowing down. When the inclined surface 231a is not formed, a residual water removing pump (not shown) may be provided to prevent the residual water.

INDUSTRIAL APPLICABILITY As described above, the present invention separates the cargo hold, the echo sounder and the speed indicator mounting compartment from each other by forming one room, i.e., a separate explosion proof space, on the upper part of the echo sounder and the line indicator mounting compartment It acts as a double bulkhead to effectively prevent the inflow of gas.

In addition, according to the present invention, the explosion-proof space can be utilized as a space for a pipe and a cable by connecting to a pipe duct.

Further, according to the present invention, in the linear shape of the polar ship for which the bow is raised and slopingly formed, the damages of the echo sounder and the line indicator can be effectively prevented even if the ice load greatly acts on the bow.

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 embodiments, but, on the contrary, Various modifications and variations are possible within the scope of the present invention.

30,31: Echo sounder and line indicator
40: Cargo hold
110: Compass for mounting echo sounder and line indicator
111: Manhole
120: Pipe duct
121: explosion-proof space
130: Ballast tank
210: Compass for mounting echo sounder and line indicator
220: Pipe duct
230: Ballast tank
231: explosion-proof space
231a:

Claims (7)

In the arrangement structure of the echo sounder and the line indicator mounting compartment in a linear form having no flat bottom in the bow area,
A cargo hold for storing LNG is formed in the inside of the hull, a pipe duct is disposed along a longitudinal direction of the hull at a lower center of the cargo hold, a ballast tank is disposed at both sides and lower portions of the cargo hold, The echo sounder and the line indicator mounting compartment are arranged between the pipe duct and the ballast tank,
Wherein the explosion-proof space is formed between the cargo hold, the echo canceller and the line indicator mounting compartment, and the arrangement of the echo sounder and the line indicator mounting compartment of the polar LNG carrier. The method according to claim 1,
Wherein the explosion-proof space is configured to be connected to the pipe duct. The arrangement structure of the echo sounder and the line indicator mounting compartment of the LNG carrier for polarity. The method according to claim 1,
Wherein the sounding device and the line indicator mounting compartment are configured to be accessible (accessible) through a pump room. The installation structure of the sounder and the line indicator mounting compartment of the LNG carrier for polarity. The method according to claim 1,
Wherein the explosion-proof space separates the cargo hold from the sounding device and the compulsory compartment for mounting the speed indicator, and serves as a double partition wall to prevent the inflow of the gas. Placement structure of. The method according to claim 1,
And the explosion-proof space is configured to be connected to the ballast tank. The arrangement structure of the echo sounder and the line indicator mounting compartment of the LNG carrier for polarity. The method of claim 5,
Wherein an inclined surface is formed on the bottom surface of the explosion-proof space to prevent the generation of residual water. The arrangement structure of the echo sounder and the line indicator mounting compartment of the LNG carrier for polarity. An LNG carrier for polarity having an arrangement of an echo sounder and a line indicator mounting compartment according to any one of claims 1 to 6.

Images