KR101821933B1 - Apparatus for heating indoor air of coffer dam in ship - Google Patents

Abstract

Disclosed is an apparatus for heating indoor air of a coffer dam in a transport vessel. Accordingly, the apparatus comprises: a housing assembly installed on a wall surface of the coffer dam and formed by first and second housings, wherein the structures of the first and second housings correspond to each other, and surfaces of the first and second housing that come into contact with each other are communicated with each other; a fan member installed in an inner space of the first housing and blowing air towards the second housing; a heating member installed in an inner space of the second housing and supplying heat towards the coffer dam; and a control unit controlling the operation of the fan member and power supply of the heating member. The first housing and the wall surface of the coffer dam are connected by means of a bracket, and outer circumferential surfaces of the first housing and the second housing are selectively coupled to each other by fastening elements provided at positions, each of which corresponds to each other. The second housing is formed in a shape corresponding to the first housing and has an outlet, through which heated air is discharged, formed on an outer periphery thereof and an opening, through which air moves, formed on an edge surface to be surface-contacting the first housing, wherein a connector of the heating member is further provided in an inner space of the edge surface. The heating member provided in the second housing is formed by the connector installed at the center of the inner space of the second housing and a planer heating element connected with the connector. The planar heating element is disposed in the second housing with a separately provided plurality of heating elements, and the connector is electrically connected with a control unit installed outside of the second housing. The present invention is able to make installation easy for heating air of a coffer dam.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a device for heating air in a cofferdam of a conveying vessel,

The present invention relates to a heating device for air inside a cofferdam of a carrier, and in order to prevent low-temperature embrittlement of the inner plate of the sideboard between the coffer dam and the coffer dam, heat is continuously supplied to the side wall of the coffer dam. The present invention relates to a cofferdam heating apparatus for a ship capable of stably supplying a heat source by supplying a heat source to a surface heating element and a fan.

Natural gas is transported in the form of gas via land or sea gas pipelines, or transported to a remote location where it is stored in an LNG carrier in the form of liquefied natural gas (LNG). Liquefied natural gas is obtained by cooling natural gas at cryogenic temperatures (approximately -163 ° C), and its volume is reduced to approximately 1/600 of that of natural gas, making it well suited for long-distance transport through the sea.

In recent years, there has been an increasing demand for floating marine structures such as liquefied natural gas transportation lines as well as floating marine structures, and such floating marine structures are also equipped with storage tanks or cargo tanks for storing liquefied natural gas at cryogenic temperatures .

Such a cargo hold or storage tank is subject to sloshing due to movement at sea. The sloshing phenomenon refers to a phenomenon in which a liquid material contained in a storage tank, that is, a liquefied natural gas, flows when a ship moves in various sea conditions, and the wall surface of the storage tank is severely impacted by sloshing.

This sloshing phenomenon necessarily occurs during the operation, and thus, in order to reduce the sloshing impact force on the storage tank, a tank arranged in two rows is proposed as disclosed in Patent Document 10-2016-0017727 have.

A ship 1 having a storage tank according to a preheater is provided with an empty space (not shown) along the center line of each of the one or more storage tanks 2, 5, in order to reduce the effect of sloshing, An inner space of each of the storage tanks 2 and 5 is divided into two spaces 2a and 2b by the central partition wall structure 3 by providing the central partition wall structure 3 so as to form the central partition wall structure 3. [

On the other hand, a coffer dam 4 extending in the width direction (for example, the lateral direction) of the ship 1 is provided between the respective storage tanks 2, 5 along the forward direction (for example, (cofferdam) is disposed.

Here, the coffer dam 4 serves to secondarily block the leakage of the liquefied natural gas due to the damage of the tank, if necessary. For this purpose, a device for raising the internal temperature of the cofferdams is required inside the cofferdams 4. If such a device is not provided, the temperature of the structure is reduced by 50 degrees Celsius due to the heat transfer from the liquefied natural gas to the cofferdam 4 To 100 ° C, which causes damage to the hull due to low temperature brittleness of the material.

Therefore, a temperature raising device or the like is also required inside the central partition wall structure 3 of the storage tank 2 divided into the two spaces 2a and 2b in the same manner as the above-mentioned coffer dam 4. [ In other words, a coffer dam for installing a temperature raising device inside the central partition wall structure 3 is required.

When the coffer dam is installed in the two row arrangement tanks by using the cofferdam installation method of the one row arrangement tank, a copper pipe extending in the width direction (for example, in the lateral direction) of the ship 1 between the storage tanks 2, In addition to providing the dam 4, a cofferdam should be installed inside the central bulkhead structure 3.

As described above, in the two row arrangement tank structure of the frontal opening, the cofferdam or the central partition wall structure is installed in the form of the lateral and longitudinal cofferdames 4a and 4b which are simply disposed alternately or in a closed state.

However, in the case where the cofferdams for each direction are separately installed in the two row arrangement tank structure of the preheating column, the temperature raising device must be installed in each of the cofferdams, so that the material consumption for the temperature raising device, There is a problem that the number of times is increased as compared with the conventional one-row arrangement tank cofferdams.

Particularly, since the cofferdam and the central bulkhead structure of the prior art technology are separated from each other in terms of the space division, it is difficult to optimize the arrangement of the temperature raising device, the heat transfer efficiency, the operating efficiency, and the installation efficiency. Accordingly, there is a drawback that the equipment or the temperature raising device must be installed more inefficiently.

For example, since the internal spaces of the cofferdam or the central partition wall structure are not connected to each other, the internal temperature of the coffer dam does not affect the internal temperature of the central partition wall structure, and the thermal energy of any one of the cofferdams or the center partition wall structure is different And are not smoothly transmitted to one energy, there is a disadvantage that the energy consumption is relatively large as compared with the internal spaces connected to each other.

KR Patent Publication No. 10-2016-0017727 (published Feb. 21, 2016)

An object of the present invention is to heat the air of a coffer dam by using heated air generated by an area heating element and a fan member.

Another object of the present invention is to make it easy to assemble, separate, and handle the heating device without a large volume in the installation place, by heating the inside of the cofferd dam with heat-exchanged air.

In order to solve the conventional problems, the present invention provides a housing assembly comprising a first housing and a second housing, the housing being installed on a wall surface of a coffer dam and having a surface-to- A fan member installed in an inner space of the first housing to allow air to be blown toward the second housing; A heating member installed in an inner space of the second housing and supplying heat to the cofferdam; And a control unit for controlling operation of the fan member and power supply of the heating member; Wherein the first housing and the cofferdam are connected to each other through a bracket and selectively coupled to the outer circumferential surfaces of the first housing and the second housing by fastening elements provided at positions corresponding to each other Wherein the second housing has an outlet hole through which heated air is discharged to an outer edge of the second housing in a shape corresponding to the first housing and air is moved on the edge face formed to be in surface contact with the first housing, And a heat generating member installed inside the second housing is installed in the center of the inner space of the second housing, and the heat generating member installed inside the second housing is installed in the center of the inner space of the second housing. And the surface heat emission element is connected to the connector, and the surface heat emission element is provided with a plurality of heaters provided separately, And the connector is located inside the housing, and the connector is electrically connected to a control unit provided outside the second housing.

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According to the present invention, since the space occupied by the surface heating element by using the heating element is small, the installation work for air heating of the copper dam can be facilitated even in a narrow space.

According to the present invention, it is possible to maximize the temperature transfer to the copper dam by blowing the heat generated from the surface heating element to the fan, so that the temperature can be easily and smoothly transferred, and the repair and replacement of the internal structure can be easily performed. .

1 is a state in which a heating device for air inside a coffer dam to which the present invention is applied is installed on the outer surface of a copper dam.
2 is a state in which the configuration of a heating device for air inside a coffer dam to which the present invention is applied is separated.
FIG. 3 is a state before fitting the housing assembly to the bracket of the copper dam side wall in the present invention. FIG.
4 is a detached state view showing the internal structures of the first and second housings of the housing assembly of the present invention.
5 is a view illustrating a state where a housing assembly is mounted on a bracket of a side wall of a copper dam in the present invention.
6 is a front view of the heat generating member of the present invention relative to the heat discharging body.
7 is a cross-sectional view taken along line aa of Fig.
8 is a cross-sectional view taken along line bb of Fig.
FIG. 9A is a schematic front view of a planar heating element that can be used in the present invention, FIG. 9B is a schematic perspective view, and FIG. 9C is a side view.

Specific embodiments in which the present invention may be practiced will now be described with reference to the accompanying drawings.

It is to be understood that these embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and that the various embodiments of the invention are not necessarily mutually exclusive.

For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with one embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

Fig. 1 shows a state in which a heating device for air inside a coffer dam to which the present invention is applied is installed on the outer surface of a coffer dam. Fig. 2 shows a state in which a configuration for a heating device for air inside a coffer dam to which the present invention is applied .

The apparatus for heating the air inside the cofferdam of the carrier according to the present invention comprises a first housing 200 installed on the wall surface of the coffer dam 90 and having a structure in which the portions of the cofferdam 90 are in contact with each other, A fan assembly 260 installed in the inner space 210 of the first housing 200 to allow air to be blown toward the second housing 300, A heating member 370 provided in the inner space 310 of the housing 300 to supply heat to the cofferdam 90 side and a heating member 370 installed in the inner space 310 of the housing 300 to supply power to the heating member 370, And a control unit (600) for controlling the control unit.

3 shows a state before the housing assembly is coupled to the bracket of the side wall of the copper dam according to the present invention. In order to install the first housing 200 on the wall surface of the coffer dam 90, And is selectively coupled to the first housing 200 and the outer circumferential surfaces 230 and 330 of the second housing 300 by fastening elements 400 provided at positions corresponding to each other, And is a configuration required in the invention.

The fixing member 152 that is hooked on the back surface of the first housing 200 is attached to the back surface of the first housing 200, that is, the outer surface 220, on the bracket 150 provided on the wall surface of the copper dam. As shown in Fig.

The elastic piece 154 is elastically contacted with the back surface of the first housing 200, that is, the outer surface 220, at an intermediate position of the fixing piece 152 at upper and lower positions of the briquettes 150.

A through hole 220a through which the fixing piece 152 is inserted is formed on the back surface of the first housing 200, that is, the outer side surface 220.

The second housing 300 of the first housing 200 of the housing assembly 100 installed in the bracket 150 is provided with a structure for supplying heated air to the cofferdam 90 side.

FIG. 4 is a separated state in which the inner structures of the first housing 200 and the second housing 300 of the housing assembly of the present invention are shown. The first housing 200 is formed as a rectangular parallelepiped having a predetermined size.

The first housing 200 constituting the rectangular parallelepiped is formed with an outer side 220 which is coupled to and separated from the bracket 150 on one side and the other side opposite to the outer side 220 is cut to form an opening 240, A rim 250 is formed around the opening 240 and an outer circumferential surface 230 forming a depth of the inner space 210 between the rim 220 and the rim 250 Is formed.

The opening 240 allows the wind or air generated in the inner space 210 of the first housing 200 to be guided to the outside of the first housing 200 and the rim surface 250 is guided to the outside of the second housing 200, (300) is assembled.

A vent hole 260 is formed in the outer surface 220 of the first housing 200 to allow external air to flow into the internal space 210 of the first housing 200.

A fan member 270 is installed in the inner space 210 of the first housing 200 to blow external air flowing through the vent hole 260 toward the second housing 300.

The fan member 270 includes a drive motor 273 driven by a power source supplied from a control unit not shown and a fan 275 which is mounted on the drive motor 273 and is rotated by a driving force to generate wind ).

A plurality of fan members 270 may be installed according to the area of the internal space of the first housing 200 or the design characteristics of the heating range of the coffer dam 90.

The second housing 300 is formed as a rectangular parallelepiped having a size corresponding to that of the first housing 200 and the wind generated from the first housing 200 is formed in the inner space 310 of the second housing 300 The outer surface 320 of the second housing 300 is formed with an opening 340a through which the air flowing into the inner space 310 is prevented from moving and discharged in an unintended direction. .

The outflow hole 350 for discharging the air heated in the inner space 310 of the second housing 300 to the side wall of the cofferdam 90 is provided on the edge surface 350 of the second housing 300 A position coupling pin 350 and a hinge 360 for assembling the first housing 200 are provided on the edge surface 340 of the second housing 300.

In other words, the position coupling piece 350 protrudes from the rim surface 340 at the opposed positions of the second housing 300 facing the position coupling hole 251 formed on the rim surface 250 of the first housing 200 .

A hinge 360 is provided at an opposed position of the second housing 300 facing the release preventing piece 253 formed on the outer circumferential surface 230 of the first housing 200.

The second housing 300 is provided with a heating member 380 for heating the air flowing into the inner space 310.

6 is a front view of a heat generating member of a heat generating member according to the present invention. The heat generating member 380 includes a planar heating element 381 for generating heat by a power source supplied from an external control unit 600, And a heat radiator 389 for exchanging heat energy generated in the surface heat emission element 381 with the air introduced into the internal space 310.

9 is a schematic configuration diagram of an area heating element 381 that can be used in the present invention.

The surface heating element 381 is a film heating element formed by sequentially printing an Ag electrode on a surface of a printing base film having a thickness of 75 μm and a thickness of 7 μm with a CNT heating line, The planar heating element 381 is connected to the control unit 600 and assembled to be electrically connected to the power supply connector 383. [

In order to improve the heating efficiency per unit area, the planar heating element 381 may be provided with a plurality of connection sockets and the connector 383 may be provided with a plurality of connection sockets to handle the plurality of planar heating elements 381 as one body .

Fig. 7 is a sectional view taken along the line a-a in Fig. 6, and Fig. 8 is a sectional view taken along the line b-b in Fig.

The heat dissipating body 385 is made of an aluminum (AL) material having good thermal conductivity and a seating groove 388 for allowing the heat generated in the surface heat emitting body 381 to be transmitted by surface contact is formed in the heat dissipating body 380 To be provided on the surface.

A radiating fin 389 is formed on the bottom surface of the seating groove 388 to increase the contact area with the air to increase heat exchange efficiency.

According to the present invention, a guide hole 387 is formed at the center of the heat discharging body 385, and a seating groove 388 is formed in all directions of the guide hole 387, (389) is formed.

Since the contact area with air is increased, the heat exchange with the air is performed rapidly, so that the air introduced into the inner space 310 of the second housing 300 is rapidly heated, Is discharged to the outside of the second housing 300, that is, to the side of the cofferdam 90 through the outflow hole 330a formed in the outer circumferential surface 330 of the second housing to heat the outer wall on the side of the cofferdam 90, The air temperature in the dam 90 is raised.

The connector 383 is electrically connected to a control unit 600 installed outside the second housing 300 and receives external power according to a program provided in the control unit 600, Depending on the method, the power supply can be controlled by timer control, remote control, or smartphone app control.

5, when the first housing 200 and the second housing 300 are coupled to each other, the first housing 200 and the second housing 300 are assembled in the same manner as the first housing 200 and the second housing 300 shown in FIG. The hinge 360 of the second housing 300 is moved in the first direction while the opening 340a of the second housing 300 is opposed to the opening 240 of the second housing 300 while the respective edge surfaces 250 and 340 are in contact with each other, When the edge face 340 of the second housing 300 is brought into contact with the edge face 250 of the first housing 200 in the state where the first housing 200 is coupled to the release preventing piece 253 of the housing 200 The positional engaging pin 350 of the housing 300 is engaged with the position engaging hole 251 of the first housing 200 so that the first housing 200 and the second housing 300 The housing fastening elements 400 are fastened to the screw fastening pieces 255 and 370 of the housing assembly 100 to assemble the housing assembly 100.

The housing assembly 100 assembled as described above can be easily coupled and separated from the bracket 150 installed on the side wall of the coffer dam 90 for the convenience of repair, When the through hole 220a formed in the outer side surface 220 of the first housing 200 is fitted into the fixing piece 152 of the bracket 150 to hold the outer circumferential surface of the fixing piece 152, The housing assembly 100 is caught in the through hole 220a of the first housing 200 and the housing assembly 100 is mounted on the bracket 152 as in the state where the housing assembly is mounted on the bracket of the side wall of the cofferdam shown in Fig. The resilient piece 154 applies an elastic repulsive force to the outer side surface 220 of the first housing 200 so that the state where the elastic piece 154 is installed on the bracket 150 is in a stable state.

When the housing assembly 100 is lifted up in the opposite direction of the coupling in order to separate the housing assembly 100 from the bracket 150, the through hole 220a of the first housing 200 is detached from the fixing piece 152, The assembly 100 is free from the bracket 150 of the copper dam 90, so that the repair and replacement of parts of the first housing 200 can be facilitated.

The filter assembly 500 is separated from the vent hole 260 of the first housing 200 while the housing assembly 100 is separated from the bracket 150 and the replacement operation can do.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is to be understood that the invention may be embodied in many other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: housing assembly 150: bracket 152:
200: first housing 210: inner space 220: outer side
230: outer peripheral surface 240: opening 250:
270: fan member 273: drive motor 300: second housing
310: inner space 320: outer side surface 330: outer peripheral surface
340: rim surface 340a: opening 380: heating member
381: Planar heating element 385: Heat sink 388:
389: radiating fin 400: fastening element 500: filter
600: control unit

Claims (10)

A housing assembly comprising a first housing and a second housing which are installed on a wall surface of the copper dam and have a structure in which portions of the housing are in surface contact with each other and correspond to each other;
A fan member installed in an inner space of the first housing to allow air to be blown toward the second housing;
A heating member installed in an inner space of the second housing and supplying heat to the cofferdam; And
A control unit for controlling operation of the fan member and power supply of the heating member; ≪ / RTI >
The wall surfaces of the first housing and the cofferdam are connected to each other via brackets and are selectively coupled to the outer circumferential surfaces of the first housing and the second housing by fastening elements provided at positions corresponding to each other. ,
The second housing includes an outlet hole through which heated air is discharged to an outer edge of the first housing, and an opening through which air is moved is provided on a rim surface formed to be in surface contact with the first housing And a connector of the heating member is further provided in the inner space of the rim surface,
Wherein the heating member provided inside the second housing comprises a connector provided at the center of the inner space of the second housing and an area heating element connected to the connector, wherein a plurality of the area heating elements are provided in a separate heat radiator Wherein the connector is located inside the second housing and the connector is electrically connected to a control unit provided outside the second housing. delete The method according to claim 1,
The first housing is formed with a rim surface in surface contact with the second housing, and on the outer side surface on which the bracket is provided, a vent hole through which the outside air flows into the inside is formed. On the inner side surface of the first housing, A moving aperture is formed,
Wherein a fan member for blowing outside air to be introduced into the internal space of the first housing is installed in the inside space of the first housing. delete The method according to claim 1,
In the first housing,
A position engaging hole is formed on a lower side of a rim surface on which the opening is formed, and a release preventing piece is formed on the rim surface,
And a screw fastening piece is further provided on left and right sides of the rim surface. 6. The method of claim 5,
A hinge is formed at a lower side of a rim surface of the second housing so as to be engaged with the position locking hole,
Wherein a screw fastening piece is protruded and formed on left and right sides of the rim surface. delete The method of claim 3,
Wherein the vent hole of the first housing further comprises a filter for filtering dust and foreign matter of air to be introduced into the vent hole of the first housing. The method according to claim 1,
In the bracket provided on the wall surface of the coffer dam,
A fixing piece which is protruded at an upper and lower position of the bracket and bent so as to receive a through hole formed in an outer surface of the first housing,
And an elastic piece provided at an intermediate position between the fixing piece and the fixing piece and elastically contacted with the outer side surface of the first housing. The method according to claim 1,
The heat dissipation member
And a guide hole for mounting the connector at a central position of a surface of the rectangular parallelepiped,
Wherein a plurality of surface heating elements are in surface contact with each other on each of the four sides of the guide hole,
And a heat radiating fins which are convexo-concave on the left and right surfaces and the bottom surface between the bottom surface of the mounting groove and the mounting groove and heat-exchanged with heat transmitted from the surface heating element, .

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