KR101628870B1 - Air Conditioning System of Side Passage Way Zone in Liquefied Natural Gas Carrier for Artic - Google Patents

Abstract

The present invention relates to an air conditioning system for a side passengerway area of an polarized LNG carrier, wherein a vent trunk for ventilation inside the side passageway area is provided on an inclined surface of the side passageway area, It is possible to increase the utilization rate and to secure the forward visibility in the wheel house during the ship operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system for a side passage area of a polarized LNG carrier,

The present invention relates to an air conditioning system in a side passageway area of an polarized LNG carrier, and more particularly, to a ventilation system for air circulation in a side passageway area by providing a vent trunk on an inclined surface of a side passageway area, To an air conditioning system in a side passage area of a polarized LNG carrier capable of enhancing space utilization while securing forward visibility in a wheel house during ship operation.

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. Especially, ships operating in the Arctic Ocean need access from the aspect of safe operation because there are potential risk factors scattered in comparison with the operation in general sea.

Polar environmental conditions have an average atmospheric temperature of about -52 ° C and have significant difficulties in development due to icebergs floating in extreme solar radiation.

Generally, LNG is a colorless transparent cryogenic liquid with methane-based natural gas cooled to -162 ° C and its volume reduced to 1/600, and is generally referred to as liquefied natural gas.

As LNG has emerged as an energy resource, an LNG carrier for LNG marine transportation has been developed as an efficient transportation method that can transport large quantities from the production base to the acquisition site of the demand site in order to use this gas as energy.

The Polar LNG carriers are equipped with a vent trunk (Vent) to convert the cold outside air to 5 ° C for internal air circulation in the side passage way zone at an ambient temperature of about -52 ° C. Trunk.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing the installation of a vent trunk in a side passage area of a conventional polar-side LNG carrier.

Referring to FIG. 1, generally, within about 2.4 m from the upper surface of the trunk deck 1, a gas dangerous zone is set. Thus, in the conventional polar LNG carrier, a vent trunk 10 is installed in a trunk deck 1) higher than about 2.4 m on the upper surface.

2 is a view for explaining the difficulty in securing the forward visibility of the wheel house and the wheel house.

Referring to FIG. 2, a wheel house 20 is installed on the uppermost layer of the hull 1 in order to perform various types of adjustment functions such as operation, steering, and communication necessary for the operation of the ship. Since the vent trunk 10 is installed on the trunk deck 1 at a height higher than about 2.4 m in the polarized LNG carrier 1, it is difficult to secure the forward visibility in the wheel house 20 because it is obstructed by the vent trunk 10, There is a problem.

In order to solve the above-mentioned problems, the present invention is characterized in that the vent trunk for air circulation in the side passageway area is provided on the inclined surface of the side passageway area, thereby improving space utilization while avoiding gas dangerous areas, The present invention provides an air conditioning system for a side passageway area of an polarized LNG carrier capable of securing a forward visibility in an open space and safely operating.

To achieve the above object, the present invention provides a vent trunk on an inclined surface of a side passeway area.

The vent trunk is located outside the gas dangerous zone and the vent trunk is positioned so as not to obstruct the front view securing in the wheel house during vessel operation.

The vent trunk includes an outside air inflow preventing unit installed at a front end portion of the vent trunk so as to selectively block inflow of outside air into the side pathway area; A preheating unit installed in the vent trunk to preheat the outside air introduced through the vent trunk and to remove moisture contained in the outside air; And at least one thermal heater installed at the rear end of the vent trunk for reheating the ambient air heated by the preheating unit.

The outside air inflow blocking unit includes a door frame installed in the vent trunk; A door provided on an upper surface of the door frame so as to be rotatable about a pivot axis and having guide protrusions formed on both sides thereof; And a door guide link which is installed to be rotatable around the hinge at both sides of the upper surface of the door frame so as to guide the opening and closing of the door and has a guide slot formed at an intermediate portion thereof, do.

A torsion spring is installed on the pivot shaft, and a door packing is installed on the door.

The door frame may be provided with a locker for locking the door.

The preheating unit includes a plurality of heat-generating units arranged vertically such that the heat-receiving unit located at the upper portion, the heat-emitting unit located at the lower portion, and the heat-receiving unit through which the heat- Louvers.

The louver has a heat-radiating fin formed on an outer circumferential surface thereof. The louver is formed with a water capturing portion on its outer circumferential surface.

The thermal heater may be installed inside the rear end of the vent trunk.

Wherein the thermal heater is formed on the left and right sides, the head having a heat sink and a heat sink formed in an upper portion and a lower portion, respectively; And a heating pipe connecting the head horizontally and having a heat flow path formed therein.

A filter may be installed behind the preheating unit, a fixing frame may be installed around the preheating unit, and a drain may be provided below the fixing frame.

As described above, according to the present invention, the vent trunk for ventilation of the side passeway area is provided on the inclined surface of the side passeway area, thereby improving the space utilization while avoiding the gas dangerous area, It is possible to secure the visibility and safe operation.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a cross-sectional view showing the installation of a vent trunk in the side passageway section of a conventional polar-
2 is a view for explaining the difficulty of securing the front view of the wheel house and the wheel house;
FIG. 3 is a cross-sectional view illustrating the installation of a vent trunk in a side passway area of an polarized LNG carrier according to a preferred embodiment of the present invention
4A and 4B are side views showing an air intake and air conditioning system for a ship for polar use according to a preferred embodiment of the present invention;
5 is a front view of Fig.
Fig. 6 is a plan view of Fig.
7 is a front view showing an outside air inflow preventing unit according to a preferred embodiment of the present invention.
8 is an enlarged view of "A"
9 is a view for explaining the heating of the outside air and the water capturing;
10 to 12 are cross-sectional views showing modifications of the louver according to the preferred embodiment of the present invention
13 is a front view showing a thermal heater according to a preferred embodiment of the present invention.
14 is a plan view showing a thermal heater according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air conditioning system for a side passway area of an polarized LNG carrier according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The air conditioning system of the side passageway section of the polarized LNG carrier according to the preferred embodiment of the present invention is characterized in that the vent trunk for air circulation in the side passageway section is provided on the slope of the side passageway section, But also enhances the space utilization and smoothes the front vision in the wheel house while operating the ship.
The present invention is applied to polarized LNG carriers and a side passway area is formed in the trunk deck. Due to the polar nature, the outdoor air temperature is too low and a vent trunk is installed to heat the outdoor air used in the side passageway area. The vent trunk extends horizontally from the outside of the inclined surface of the side passeway area in the current direction (in the hull width direction).

The present invention can be applied not only to polar ships but also to general ships, by circulating the air inside the side passeway area to convert cold outside air to 5 ° C.

An air conditioning system according to the present invention includes a vent trunk 10, an air guide 12 installed at an upper portion of the vent trunk 10, an outside air inflow preventing unit 100 installed in the vent trunk 10, A preheating unit 200, and a thermal heater 300.

Further, the vent trunk 10 can be fixed to the inclined surface (inclined panel) of the passageway area by a conventional fastening means such as welding or bolt.

The outside air inflow / outflow blocking unit 100 may be installed at the front end of the vent trunk 10. When the front end portion of the vent trunk 10 is blocked by the outside air inflow / outflow blocking unit 100, cryogenic outside air is not introduced into the side passway area.

The outdoor air inflow / outflow blocking unit 100 is configured to be opened when the air conditioning operation is performed and closed when the air conditioning operation is not performed to block the inflow of the ambient air.

Referring to the configuration of the outside air inflow and outflow blocking unit 100, a door frame 110 (see FIG. 5) may be installed on the upper surface of the vent trunk 10.

A pivot shaft 111 is horizontally installed on the upper portion of the door frame 110 and a door 120 is rotatably installed around the pivot shaft 111. Guide protrusions 121 may be formed on both sides of the door 120.

A door guide link 130 may be installed on both sides of the front surface of the door frame 110 so as to guide the opening and closing of the door 120 around the hinge 131.

A handle 130a may be formed on the door guide link 130. The handle 130a connects the door guide links 130 located on both sides of the front surface of the door frame 110 and is used when the door 120 is opened or closed.

A guide slot 132 is formed in the middle of the door guide link 130 so that the guide protrusion 121 is inserted into the guide slot 132 and guided. At the end of the guide slot 132, a stopping groove 132a is formed. When the guide protrusion 121 is inserted into the stopping groove 132a, the opened state of the door 120 is maintained.

That is, when the handle 130a is pushed or pulled and the door guide link 130 is rotated about the hinge 131, the guide protrusion 121 is moved along the guide slot 132, And the door 120 is configured to be opened and closed while being pivotable about the pivot shaft 111.
The door guide link 130 is positioned in a direction orthogonal to the door 120 when the door 120 is opened and parallel to the door 120 when the door 120 is closed.

A torsion spring 112 may be installed on the pivot shaft 111 and a door packing 113 may be installed on the door 120.

The torsion spring 112 applies an elastic force to the door 120 in a direction to open the door 120 to prevent the door 120 from being too suddenly closed when the door 120 is closed, The door packing 113 serves to absorb an impact when the door 120 is closed.

A locker 140 for locking the door 120 may be installed on the door frame 110. As the locker 140, an actuator or a hydraulic cylinder may be used.

The preheating unit 200 is installed in the vent trunk 10 to preheat the outside air introduced through the outside air duct 10 and to remove moisture contained in the outside air.

A filter (F) may be installed behind the preheating unit (200). The filter F serves to filter not only moisture, water droplets, and dust contained in the outside air, but also foreign substances.

A fixing frame 201 may be installed around the preheating unit 200 and a drain 202 may be installed below the fixing frame 201.

The drain 202 collects the moisture removed from the water capturer 233 of the preheating unit 200 and discharges the moisture to the outside.

The fixed frame 201 serves to cover the preheating unit 200, and a damper (not shown) may be installed on the fixed frame 201.

The preheating unit 200 includes a fruit inlet 210 positioned at an upper portion and a fruit outlet 220 located at a lower portion. Steam (or oil) flows into the fruit inlet 210 and steam (or oil) is discharged to the fruit outlet 220.

The heating medium is also referred to as a heat transfer medium, and refers to a fluid that serves to transfer heat from a heat source to another in order to maintain heat transfer or reaction temperature. As the condition of the fruit, the heat capacity per unit volume is large, and it is thermally stable, has a high thermal conductivity, is low in corrosiveness, and is non-toxic, and in addition to air, water, steam, mercury and oil,

A plurality of louvers (or blades) 230 may be arranged vertically such that the steam (or oil) flowing through the fruit inlet portion 210 is discharged through the fruit outlet portion 220.

The louver 230 may be connected up and down. A heat flow path 231 is formed in the louver 230.

The louver 230 may have a heat dissipating fin 232 (see FIG. 10) and / or a water capturing portion 233 (see FIG. 9) on its outer circumferential surface.

The shape of the louver 230 shown in Fig. 10 is such that a circular heat conduction path 231 is formed in the louver and a heat dissipation fin 232 is formed on the outer surface. The shape of the louver 230 shown in Fig. The louver 230 shown in Fig. 12 has a shape in which a heat flow path 231 is formed in the entire interior of the louver, and a lid 231 is formed on the outer surface The water capture 233 is formed, and the shape of such a louver can be modified into various other shapes.

9, when the outside air at a cryogenic temperature flows into the louver 230, the outside air is heated by steam or oil flowing through the heat conducting channel 231, and moisture contained in the outside air is removed by the water capturer 233 . That is, it is possible to effectively remove the moisture contained in the outside air by inducing the outside air so that a part of the outside air flowing through the louver 230 passes through the water capturer 233.

The moisture contained in the outside air is completely removed by the water cap 233 and the filter F of the louver 230 before the outside air is introduced into the thermal heater 300, It is possible to increase the heating efficiency. That is, when moisture is contained in the outside air, the thermal heater 300 requires more energy to heat the outside air and moisture. However, when moisture is not contained in the outside air, The heating efficiency can be improved by requiring a relatively small amount of energy since heating is required.

The thermal heater 300 may be installed at the rear end of the vent trunk 10 to reheat the ambient air heated by the preheating unit 200.

13 and 14, the thermal heater 300 may be installed outside or inside the rear end of the vent trunk 10. At least one or more thermal heaters 300 may be installed according to design conditions.

The thermal heater 300 includes a head 310 installed on both sides and a heating pipe 320 connecting the head 310 horizontally and having a heat flow path 321 formed therein.

The head 310 is formed on the left side and the right side, respectively, and a fruit inlet portion 311 and a fruit outlet portion 312 are formed on upper and lower portions of the head 310, respectively. A heat flow path 321 is formed in the heating pipe 320. A fin tube 322 may be formed outside the heating pipe 320.

In the air conditioning system of the side passageway area of the polarized LNG carrier thus constructed, the vent trunk 10 for air circulation in the side passageway area is provided on the slope of the side passageway area, It is possible to increase the space utilization and secure the front view of the wheel house while operating the ship.

The air introduced into the vent trunk 10 through the air guide 12 is preheated while passing through the preheating unit 200 and the outside air heated by the preheating unit 200 is reheated by the thermal heater 300 , And ventilating the inside air of the side passage way zone at the polar temperature where the ambient temperature is about -52 ° C, so that it can be efficiently converted to 5 ° C.

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. Various modifications and variations are possible within the scope of equivalents.

10: vent trunk
12: Airline guide
100: External air inflow cutoff unit
110: Door frame
111: Pivot shaft
112: Torsion spring
113: Door packing
120: Door
121: guide projection portion
130: Guide link
130a: Handle
131: Hinge
132: guide slot
132a: Stopping groove
140: Rocker
200: Preheating unit
201: Fixed frame
202: drain part
210:
220:
230: Louver
231: fruit berries
232: heat dissipation pin
233: Water Capture
300: Thermal heater
310: Head
311:
312:
320: Heating pipe
321: fruit berries
322: Finned tube
F: Filter

Claims (15)

A side passageway area is formed in the trunk deck and a vent trunk extends horizontally from the outside of the inclined surface of the side passageway area in the current direction so that the vent trunk is located out of the gas dangerous zone, It is located so as not to obstruct the front view in the wheel house during the ship operation,
The vent trunk
An outside air inflow preventing unit installed at a front end of the vent trunk so as to selectively block inflow of outside air into the side pathway area;
A preheating unit installed in the vent trunk to preheat the outside air introduced through the vent trunk and to remove moisture contained in the outside air; And
Wherein at least one thermal heater is provided at a rear end of the vent trunk for reheating outside air heated by the preheating unit,
The outside air inlet /
A door frame installed at an upper portion of the vent trunk;
A door provided on an upper surface of the door frame so as to be rotatable about a pivot axis and having guide protrusions formed on both sides thereof; And
A door guide link which is installed on both sides of the upper surface of the door frame so as to guide opening and closing of the door and which is rotatable about a hinge and is formed with a guide slot at an intermediate portion thereof and the guide projection is inserted and guided in the guide slot, ,
Wherein the door guide link is located in a direction orthogonal to the door when the door is opened and the door guide link is positioned parallel to the door when the door is closed. Air conditioning system. delete delete delete delete The method according to claim 1,
Wherein a torsion spring is installed on the pivot shaft and a door packing is installed on an upper portion of the door. The method according to claim 1,
Wherein the door frame is provided with a rocker for locking the door. The method according to claim 1,
The preheating unit
A fruit inlet portion located at an upper portion;
A fruit discharge portion located at a lower portion; And
And a plurality of louvers arranged vertically so that the flowed-in water through the fruit inlet portion is discharged through the fruit outlet portion, and a heat flow path is formed in the interior of the side passageway section of the polar LNG carrier. The method of claim 8,
Wherein the louver has a heat dissipation fin formed on an outer circumferential surface thereof. The method of claim 8,
Wherein the louver has a water capture portion formed on an outer circumferential surface thereof. The method according to claim 1,
Wherein the thermal heater is installed inside the rear end of the vent trunk. The method of claim 11,
The thermal heater
A head which is formed on the left and right sides and in which a fruit inlet portion and a fruit outlet portion are formed in upper and lower portions, respectively; And
And a heating pipe connecting the head horizontally and having a heat flow path formed therein. The method according to claim 1,
And a filter is installed at the rear of the preheating unit. The method according to claim 1,
And a stationary frame is installed around the preheat unit. 15. The method of claim 14,
And a drain is provided at a lower portion of the stationary frame.

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