KR101325919B1 - Fire rated and weather-tight steel door of ship or marine structure - Google Patents

Abstract

The purpose of the present invention is to provide a fireproof weather tight steel door for a ship or a marine structure which has an improved fireproof structure and can sufficiently delay fire transmission time when fire occurs. The present invention relates to a fireproof weather tight steel door for a ship or a marine structure. The fireproof weather tight steel door comprises a door frame including a strip-shaped protrusion part which is fixed to a wall and the whole circumference of an opening part so that the width direction can stand and protrude toward the outer side of the opening part; and a door including a packing which is installed in the whole circumference corresponding to the strip-shaped protrusion part in order to close the opening part by being combined with the side of the door frame or the wall with a hinge and by being attached to the fore end of the strip-shaped protrusion part. The door includes the packing which is installed along the circumference of the opening part; and a fireproof body which has a thickness to protrude more than the packing toward the inner side of the opening part at a closing point of the opening part and whose outer circumference has a fixed interval from the strip-shaped protrusion part. A mineral wool filler fills the inside of the fireproof body. And a bar-shaped thermal expansion nonflammable seal member with a smaller thickness than the fixed interval is attached to the side face of the fireproof body or the inner side face of the strip-shaped protrusion part which faces the side face of the fireproof body in order to block the gap through thermal expansion.

Description

Fire Rated and Weather-tight steel door of ship or marine structure}

The present invention relates to a fire-proof wind-tight steel door of a ship or offshore structure, and more specifically, to a corner surface of a door (door leaf) that meets a door frame (door frame) by filling mineral wool for fire protection inside the steel door. Fireproof wind-tight steel doors of ships or offshore structures configured to have thermal and non-flammable seal members to have an effective fire and flame shielding performance and to block the inflow of wind and waves.

Fire protection steel doors of ships or offshore structures are to be installed at the entrances to external bulkheads entering the ships or offshore structures, or at the entrances through fire barriers.

In general, there are many devices such as engines or boilers that use flammable materials in ships or offshore structures, and there is always a high risk of fire because many combustible materials are stored for the operation of these devices. The entrance and exit of the house is required not only to prevent the inflow of water waves and rain indoors, but also to prevent the spread of fire.

Therefore, in case of fire, fire protection steel doors should be able to easily evacuate crew members or other passengers to the safe area, and meet the effective time of fire protection required by the Society or the International Maritime Organization. In the case of blue or rainy weather, it is necessary to be manufactured in the most efficient structure that does not introduce waves or rainstorm into the room.

1 and 2 illustrate a fireproof steel door of the related art, and show a fireproof weathertight steel door described in Korean Utility Model Publication No. 20-2013-0002672.

Referring to Figures 1 and 2, the conventional fire-resistant steel door (1) is installed in two rows of packing material (2) that can withstand at high temperatures to prevent the passage of flame or fire when fire occurs, one By operating the opening and closing handles 3 of the dog 4 installed to be linked to this drive was to be able to lock and open the door.

However, in the conventional fire-resistant steel door is a heat transfer of the fire-resistant steel door (1) that is heated in the event of a fire is quickly and easily heated to generate a gap between the door and the door frame due to heat deformation, the flame and fire through the gap between the gap There is a problem, which does not block the flame or heat, there is a problem that can not sufficiently delay the time the fire is transmitted to the outside of the door. In addition, since the drive of the dog 4 is not smooth due to the deformation of the fire resistant steel door 1, it may cause an extremely dangerous situation in which the door cannot be opened and closed quickly.

In addition, the refractory packing material (2) installed for the purpose of flame and fire blocking has a problem that does not have a sufficient watertight function due to the nature of the material has a problem that can not completely block the inflow of sea waves or weatherproof.

The present invention has been made in view of the above problems, an object of the present invention is to provide a fire-proof wind-tight steel door of the ship or offshore structure of the structure capable of sufficiently delaying or blocking the fire propagation time in the event of fire and improved fire protection performance To provide.

Another object of the present invention is to provide a fireproof weathertight steel door of a ship or offshore structure having a structure of relatively free and excellent in fire protection performance while the material selection of the packing to block the rain and sea water.

The present invention for achieving the above object is to be installed around the opening formed in the wall surface is fixed to the wall surface, the width direction is fixed to the entire circumference of the opening so that the width direction is erected in the direction toward the outside of the opening A door frame including a strip-shaped protrusion is formed, and a packing is provided on the entire frame to correspond to the strip-shaped protrusion to close the opening by being in close contact with the tip of the strip-shaped protrusion, and hinged to the side or the wall of the door frame. In the fireproof weathertight steel door of a ship or offshore structure including a door leaf (door leaf), the door is surrounded by the packing is installed along the rim than the packing in a position where the opening is closed The side circumference has a thickness that protrudes further inwardly of the opening. It has a fire prevention body having a gap between the band-shaped protrusion and a predetermined interval, wherein the fire-resistant body is filled with a mineral wool filling therein, the side of the fire body or the side of the fire-shaped body facing the side of the fire body On the inner side, the thermal expansion non-flammable seal member having a thickness smaller than the predetermined interval is attached to the gap to expand by heat.

In addition, in the present invention, the fire prevention body is laminated on the inner plate surface of the inner plate facing the inner side of the opening of the two plates of the mineral wool filler is filled, the graphite plate is laminated on the outer plate surface of the mineral wool filler, The outer side of the fire protection body is characterized in that the outer steel plate is laminated so as to contact the outer plate surface of the graphite flat plate.

In addition, the present invention is further provided with a graphite side plate surrounding the mineral wool filler along the side of the fire prevention body to form a case shape surrounding the mineral wool filler with the graphite flat plate, the side along the outer surface of the graphite side plate Another feature is that the steel plate is installed to form the side of the fire prevention body.

In addition, the thermal expansion non-flammable seal member in the present invention is that the expanded graphite is included in the synthetic resin coating material, the graphite plate is characterized in that a plurality of graphite plates laminated with a blank space layer formed in the middle.

Further, in the present invention, the inner steel sheet is joined to the reinforcing material having a cross section perpendicular to the longitudinal direction of the “a” shape so that the “a” shaped cross section is upright on the surface of the inner steel sheet, and bonded to the inner steel sheet. The edge of the reinforcing material is a concave-convex shape along the longitudinal direction of the reinforcing material is in contact with the inner steel plate intermittently, the inner steel plate and the reinforcing material is another feature that is joined by spot welding of a predetermined interval.

The present invention is lighter than the conventional fire-resistant steel doors and can reduce the production cost, and has the effect of having a function of weathertight to prevent the inflow of rain and wind indoors as well as the function of arson and fire protection. .

In particular, the fireproof weatherproof steel door according to the present invention forms a laminated structure of the mineral wool filler and the graphite plate, and provides excellent flame and thermal barrier properties by providing a thermal expansion non-flammable seal member in the gap between the strip-shaped protrusion and the fire protection body. Have Accordingly, the fireproof weathertight steel door of the ship or offshore structure of the present invention can exhibit a sufficient effect of blocking the fire or delaying the spread of fire when a fire occurs.

In addition, the fire protection body is a mineral wool and graphite plate and the outer steel plate is laminated by the fire and the mineral wool and graphite plate can be blocked in a double, it is possible to fundamentally eliminate the ignition factors inside the door in a high temperature state. In addition, the graphite side plate is further installed to surround the mineral wool filler to maintain the shape of the mineral wool filler together with the graphite flat plate, and even though the high temperature condition is maintained, the thermal barrier performance may be uniform throughout the door.

In addition, when the graphite plate is not installed between the outer steel plate and the mineral wool of the door, in order to obtain the fire protection performance of the present invention, it is necessary to install the mineral wool with a higher specific gravity and a thicker thickness. The heat insulation effect is further improved by providing a graphite plate between the mineral wool and the mineral wool and forming a laminate of graphite plates having a void layer in the middle of the graphite plate. In other words, instead of the density of the mineral wool of 170 ~ 200kg / ㎥ is usually composed of mineral wool of 110Kg / ㎥ density, sufficient heat insulation effect can be obtained and the thickness of the mineral wool can be reduced, for example, from 75mm to 50mm.

In addition, the present invention is a thermal expansion non-flammable seal member is installed in the gap between the band-shaped protrusion and the fire prevention body can block the progress of the flame through the gap between the band-shaped protrusion and the fire protection body when the fire occurs, to block the rain and sea water Since the packing is not required to be heat or fire resistant material, the choice of packing material is relatively free.

In addition, the present invention is bonded to the inner steel sheet in the longitudinal direction perpendicular to the "a" shape of the cross section is bonded, the "a" shape is joined in a state standing on the surface of the inner steel sheet, the contact with the inner steel sheet The edges of the reinforcement are joined by the spot welding of the inner steel plate and the predetermined intervals, resulting in a structure with a large cross-sectional coefficient that resists bending, while improving the reinforcement performance, and reducing the contact area that is heat-transmitted, so that the high temperature of the inner steel sheet moves to the inside of the door. Minimizing delivery.

1 is a front configuration diagram showing a conventional fire-resistant steel door for ships
Figure 2 is a longitudinal cross-sectional configuration diagram of a conventional fire-resistant steel door for ships
Figure 3 is a front configuration diagram showing a fireproof weathertight steel door according to an embodiment of the present invention
Figure 4 is a cross-sectional view showing a fireproof weathertight steel door according to an embodiment of the present invention
Figure 5 is a longitudinal cross-sectional view showing a fireproof weathertight steel door according to an embodiment of the present invention
6 is an enlarged cross-sectional view of the portion “A” of FIG. 3.
Figure 7 is a partially cut perspective view showing the laminated structure of the fire prevention body in the fireproof weatherproof steel door according to an embodiment of the present invention
Figure 8 is a cut perspective view showing the bonding structure of the reinforcing material and the inner steel plate in the fireproof weatherproof steel door according to an embodiment of the present invention.
Figure 9 is a facility facility showing the thermal expansion non-flammable seal member in the fireproof weatherproof steel door according to an embodiment of the present invention
FIG. 10 is an explanatory view illustrating an operation of completely sealing a gap between a door frame and a door by expanding a non-combustible expansion seal by a flame when a fire occurs in a fireproof wind-tight steel door according to an embodiment of the present invention.
11 is a fire test report of the fire prevention test researchers for the fire door weatherproof steel door according to an embodiment of the present invention
12 is a structural diagram of a fireproof weathertight steel door submitted to the Korea Institute for Disaster Prevention test for the fire prevention test of FIG.
FIG. 13 is a graph showing a heating temperature increase in a fire test of a steel door during the fire test of FIG. 11;
FIG. 14 is a table showing the average temperature rise change of each station point over time on the back surface of the steel door (opposite side of the heating surface) during the fire test of FIG.
FIG. 15 is a table showing the maximum temperature rise change of each point at the time of the rear surface of the steel door (opposite side of the heating surface) during the fire test of FIG.
16 is a state observation report of the specimen used in the test in the course of the fire prevention test of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail with reference to the drawings.

3 is a front configuration diagram showing a fireproof weathertight steel door according to an embodiment of the present invention, FIG. 4 is a cross sectional configuration diagram, and FIG. 5 is a longitudinal sectional configuration diagram.

3 to 5, the fireproof weathertight steel door of the ship or offshore structure according to the embodiment of the present invention is installed around the opening 65 formed in the wall surface 60. And a door frame 10 including a strip-shaped protrusion 12 fixed to the entire circumference of the opening 65 so that the width direction is raised in the direction toward the outside of the opening 65 to protrude. The packing 21 is hinged to the side of the wall or wall surface 60, is in close contact with the front end of the band-shaped protrusions 12 and installed on the entire frame so as to correspond to the band-shaped protrusions 12 to close the opening 65. The provided door 20 is installed.

The door frame 10 has an opening 65 formed in the wall surface 60 and is installed around the door frame 10 to enter and exit the crew, and is fixed to the wall surface 60 of the ship by welding.

In the door frame 10, a strip-shaped protrusion 12 which is erected so as to protrude in a direction toward the outside of the opening 65 is fixed to the entire circumference of the opening 65. The strip-shaped protrusion 12 may be formed by welding an L-shaped angle around the opening 65.

The door 20 is formed of a plate-like steel to open and close the opening 65 to the user. In addition, the hinge 65 is hinged to the door frame 10 to pivot about the hinge 45 to open and close the opening 65. The hinge 45 is not necessarily formed on the door frame 10 and may be installed on the wall surface 60 of the ship.

The locking operation of the door 20 is made by turning the dog 44. The dog 44 has a roller 44a that rotates by a bearing at its end, and the roller 44a contacts the door frame 10 during rolling of the dog 44 for locking, thereby rolling the dog smoothly. It is possible to drive. In the related art, when the dog 44 is driven between the locked and unlocked positions, the dog 44 and the door 10 come into contact with each other to slide, and thus the driving is not smooth due to friction.

The door 20 is for closing the opening 65, the fire body 23, which is a plate-like body, the packing 21 is installed on the outer circumference of the fire body 23, and the packing 21 An outer steel plate 25 is accommodated and stacked on the outer surface of the fire protection body 23. That is, the packing 21 is installed along the edge of the door 20, and the installation position of the packing 21 corresponds to the strip-shaped protrusion 12 so that the opening 65 can be closed. It may be in close contact with the entire circumference of the opening 65.

The packing 21 is installed in the entire circumference along the edge of the surface sealing the opening (entrance), the door 20 is elastic so as to perform a waterproof, windproof function in a completely closed opening 65 It consists of material.

As shown in FIG. 6, the fire protection body 23 has an inner steel plate 234, a mineral wool filler 231, a graphite flat plate 232, and a graphite side plate except for the packing 21 and the outer steel plate 25. 233, a plate-shaped block body including a side plate 236.

The fire prevention body 23 has a thickness more protruding inwardly of the opening 65 than the packing 21, and the side circumference is a predetermined distance from the band-shaped protrusion 12 at a position where the opening 65 is closed. (b) has a gap.

That is, as shown in FIG. 6, the fire prevention body 23 is more protruded in the inward direction of the opening 65 than the packing 21, and the side surface of the fire prevention body 23 in the state where the door 20 is closed. A gap “b” is formed between the strip-shaped protrusions 12.

The fire prevention body 23 serves to block or delay the spread of the fire generated inside the opening 65 to the outside, and the opening 65 of both plates of the mineral wool filler 231 filled therein. An inner steel plate 234 is laminated on the inner plate surface facing toward the inner side, and a graphite flat plate 232 is laminated on the outer plate surface of the mineral wool filler 231.

Mineral wool is an inorganic heat insulating material that is formed by melting a calcium silicate ore at a high temperature, fiberizing it using a high-speed rotational force, and molding it to a certain shape using a binder. In the present embodiment, the mineral wool filler 231 is formed in the door to have a density of 110 kg / m ^{3 and} a thickness of 50 mm (two 25 mm stacks).

The inner steel plate 234 is provided with a reinforcing material 238, which is a steel material, without increasing the thickness of the steel sheet in order to prevent the inner deformation (twisting) of the door 20. As shown in FIGS. 3 to 5, the reinforcing member 238 is reinforced in the horizontal and vertical directions on one surface of the inner steel plate 234 facing the inside of the door 20 to reinforce the strength of the inner steel plate 234. . However, since the reinforcing material 238 may play a role of transferring high heat of the inner steel plate 234, instead of continuously welding the inner steel plate, as shown in FIG. 8, spot welding (Tack welding) at a predetermined interval, for example, 200 mm interval, is used. To reduce the bonding area.

In addition, the reinforcing material 238 may improve the reinforcing performance by increasing its cross-sectional thickness, but the increase in the cross-sectional thickness of the reinforcing material 238 causes the weight increase of the door.

Accordingly, in the present embodiment, as shown in FIG. 8, an angle member having a cross section perpendicular to the longitudinal direction of the reinforcing material 238 is formed using an “a” shape, and the “a” bottom portion contacts the inner steel plate 234. Bonding, that is, the "a" shape is joined in a state standing upright on the surface of the inner steel plate 234. It is a structure having a large cross-sectional coefficient to resist bending can have a high reinforcement performance with a small weight.

In addition, the edge of the reinforcing material 238 to be bonded to the inner steel plate 234 is the concave-convex shape 238a along the longitudinal direction of the reinforcing material 238 to make intermittent contact with the inner steel plate 234, the concave-convex shape The spot welding 238b is made in contact with the inner steel plate 234. Such a joining configuration minimizes the transfer of the high heat of the inner steel plate 234 to the inside of the door 20 by reducing the contact area that is heat transfer while improving the reinforcing performance.

Since the reinforcing material 238 is installed inside the door 29, the reinforcing material 238 is surrounded by the mineral wool filler 231 in a state of being attached to the inner steel plate 234.

The outer steel plate 25 is provided with a towing hook 27 to hang the cable to pull the heated door 20. The traction hook 27 is used to remove the door 20 from the opening 65 in order to quickly recover the fire site since the door 20 continues to be high temperature for a long time after the fire and extinguish the fire. That is, the opening 65 can be opened even in a high temperature state by hooking the cable to the towing hook 27 and tearing off the door 20 by the retractor.

On the other hand, the graphite plate 232 is installed to block the flame blocked primarily by the mineral wool filler 231 second. The graphite plate 232 is made of a graphite material can maintain high strength even at high temperature, low thermal expansion coefficient and strong against thermal shock.

6 and 7, the graphite flat plate 232 is laminated with two graphite plates 232a and 232c having the same thickness (3 mm), the middle of which is stacked at the same interval as the thickness of one sheet. Form an empty space layer (3mm). By placing the void layer 232b, not only the effect of the thermal barrier can be greatly improved, but also the required amount of graphite plate can be reduced and the overall weight of the door can be reduced. When the empty space layer 232b is formed in the middle of the graphite flat plate 232 as described above, an excellent heat insulating effect may be obtained than when the empty space layer 232b is filled with the graphite plate.

In addition, a graphite side plate 233 is further installed to surround the mineral wool filler 231 along the side surface of the fire protection body 23, and as shown in FIG. 7, the mineral wool filler together with the graphite flat plate 232 ( 231 is configured to form a case shape surrounding. This maintains the shape of the mineral wool filler 231 even at high temperatures and allows the thermal barrier performance to be uniform throughout the door 20 even though the high temperature condition is maintained.

A side steel plate 236 is provided along the outer side surface of the graphite side plate 233 to form the side surface of the fire protection body 23 and protect the graphite side plate 233 from external impact.

On the other hand, referring to Figure 6, on the inner side of the strip-shaped protrusions 12 facing the side of the fire protection body 23, or the side of the fire body 23, is expanded by heat to block the gap. The bar-shaped thermally expandable non-flammable seal member 30 having a thickness t smaller than the predetermined interval b is attached thereto.

The thermally expandable non-flammable seal member 30 includes expandable graphite (expandable graphite) therein, the expanded graphite is manufactured by injecting sulfur or nitrogen compounds between the layers, and expands when heat is applied. In addition, since graphite is nonflammable, it does not burn in an expanded state even at high temperatures. Since the expansion start temperature is around 200 ° C, the expansion may occur before the burnout of the surrounding parts occurs to block the flame.

Referring to FIG. 9, in the present embodiment, the thermally expandable non-flammable seal member 30 is configured to surround the outer surface of the expanded graphite 32 by a synthetic resin coating material 34 made of a synthetic resin, preferably PVC. To form a bar overall. The thermally expandable non-flammable seal member 30 having a bar shape is attached along the side circumference of the fire protection body 23 as shown in FIG. 6, and double-sided tape or adhesive is used at the time of attachment. The thermally expandable non-flammable seal member 30 blocks the gap between the strip-shaped protrusion 12 and the fireproof body 23 to block the flame, so that the strip-shaped protrusion 12 facing the side of the fireproof body 23 is disposed. The same effect can be obtained even if it is attached along the inner surface.

Thermal expansion non-flammable seal member 30 in the attached state has a thickness (t) smaller than the predetermined interval (b) of the gap between the band-shaped protrusion 12 and the fire protection body 23, so that the door 20 is normally opened and closed. It does not interfere with operation at all.

At the time of fire, flame penetrates into the gap between the strip-shaped protrusion 12 and the fire protection body 23, and the thermally expandable non-flammable seal member 30 is heated in the state (a) of FIG. Inflate with state (in case of fire). That is, the synthetic resin cladding material 34, which is a PVC material, is burned out first and the expanded graphite 32 expands to block the gap between the strip-shaped protrusion 12 and the fireproof body 23, thereby blocking the expanded graphite 32. do.

As a result, the flame may be prevented from damaging the packing 21 through the gap between the band-shaped protrusion 12 and the fire prevention body 23 and advancing to the outside of the door 20.

Meanwhile, the handle 42 is provided at the center of the door 20 to operate the dog rod 5 and the plurality of dogs 44 through the rotational movement of the handle 42. The handle 42 for actuating the dog 44 can of course be changed to a known rod-shaped handle.

11 to 16 illustrate the fire protection test report performed by the Korea Disaster Prevention Test Institute for fireproof wind-tight steel door according to an embodiment of the present invention.

In the fire test, heating is performed by an oil combustion furnace in the inner side of the door 20, and a plurality of thermocouples are distributed on the outer surface of the outer steel plate 25 to measure temperature.

Referring to the detailed structural diagram of Figure 12 submitted for the fire test, it can be seen that the door 20 and the door frame 10 is configured as described in the above-described embodiment, the mineral wool filling used in the test The sieve 231 had a density of 110 kg / m ³ and was laminated to two sheets of 25 mm in thickness to produce a thickness of 50 mm.

In the heating conditions, as shown in FIG. 13, the inner surface of the door is heated for 60 minutes so that the temperature in the furnace reaches 945 ° C.

After 60 minutes of heating by the furnace, the average temperature measured at the outer surface of the outer steel plate 25 is 131 ° C as recorded in FIG. 14, and the maximum temperature is 152 as recorded in FIG. It is only ℃.

Moreover, according to the test observation result of FIG. 16, the result that no flame was observed externally for 60 minutes until the test is complete | finished was recorded. This not only shows the excellent thermal barrier performance of the fire protection body 23 including the mineral wool and the graphite flat plate, but also the thermal expansion non-flammable seal member 30 at the boundary between the door 20 and the door frame 10 in which the packing 21 is located. ) Expands and fills the gap, showing that the ability to block the flame has been fully demonstrated.

The above-mentioned test is a test by a certified organization regarding the performance of the fireproof wind-tight steel door of this embodiment to sufficiently prevent heat transfer and prevent the spread of fire to the outside of the flame generated inside the opening 65. It satisfies the requirements of fireproof weathertight steel doors required by international maritime organizations. That is, in the present invention, when the inner surface of the steel door is heated for 60 minutes with a flame reaching 945 ° C, the average temperature of the outer surface of the steel door is within 140 ° C, None of these parts exceeds temperatures above 180 ° C and meets the requirements of the Society and the International Maritime Organization to meet the 60 minute fire cut-off period without generating or protruding flames.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the particular embodiments set forth herein. It goes without saying that other modified embodiments are possible.

One; Fireproof weatherproof steel door 2; Packing material
3; Open / close handle 4; Dog
5; Door 10; doorframe
12; Strip-shaped protrusion 20; Door
21; Packing 23; Fireproof body
231; Mineral wool fillers 232; Graphite plate
232a, 232c; Graphite plate 232b; Empty space
233; Graphite side plates 234; Inner steel sheet
236; Side plate 238; reinforcement
238a; Uneven shape 238b; Spot welding
25; Outer steel plate 27; Towing hook
30; Thermal expansion non-flammable seal member 32; Expanded graphite
34; Synthetic resin coating 42; handle
44; Dog 44a; roller
45; Hinge 60; Wall
65; Opening

Claims (5)

The periphery of the opening 65 is installed around the opening 65 formed in the wall surface 60 so as to be fixed to the wall surface 60 so that the width direction is erected in the direction toward the outside of the opening 65. A steel door frame 10 having a strip-shaped protrusion 12 fixed to the whole; And
The packing 21 is provided in the entire frame so as to be in close contact with the front end of the strip-shaped protrusion 12 to correspond to the strip-shaped protrusion 12 to close the opening 65, and the side of the door frame 10. Or a door 20 of steel hinged to the wall surface 60;
The door 20,
The packing 21 is enclosed along an edge and has a thickness that protrudes more inwardly of the opening 65 than the packing 21 in a position where the opening 65 is closed, and the circumference of the side surface is the band shape. It has a fire prevention body 23 having a gap of the projection 12 and the predetermined interval (b),
The fire prevention body 23 is filled with a mineral wool filler 231 therein,
On the inner side of the strip-shaped protrusion 12 facing the side of the fire prevention body 23 or the side of the fire prevention body 23, it is expanded by heat to block the gap. Fireproof weatherproof steel door of ship or offshore structure, characterized in that the thermally expandable non-flammable seal member 30 having a smaller thickness t is attached The method of claim 1,
The fire prevention body 23
The inner steel plate 234 is laminated on the inner plate surface facing the inner side of the opening 65 of both plate surfaces of the filled mineral wool filler 231,
The graphite plate 232 is laminated on the outer plate surface of the mineral wool filler 231,
On the outside of the fire prevention body 23
Fireproof weatherproof steel door of ship or offshore structure, characterized in that the outer steel plate 25 is laminated so as to contact the outer plate surface of the graphite flat plate 232 3. The method of claim 2,
The graphite side plate 233 is further installed along the side surface of the fire protection body 23 to form a case shape to surround the mineral wool filler 231 together with the graphite flat plate 232. ,
Fireproof wind-tight steel door of the ship or offshore structure, characterized in that the side plate 236 is installed along the outer surface of the graphite side plate 233 to form the side of the fire prevention body 23 The method of claim 2 ,
The thermally expandable nonflammable seal member 30 includes expanded graphite 32 in the interior of the synthetic resin coating material 34,
The graphite plate 232 is
Fireproof wind-tight steel door of a ship or offshore structure, characterized in that a plurality of graphite plates (232a, 232c) are laminated so that the empty space layer (232b) is formed therebetween. 5. The method according to any one of claims 2 to 4,
The inner steel plate 234 is
The reinforcing material 238 having a cross section perpendicular to the longitudinal direction of the "a" shape is joined so that the cross section of the "a" shape is upright on the surface of the inner steel plate 234,
An edge of the reinforcing material 238 joined to the inner steel plate 234 becomes an uneven shape 238a along the longitudinal direction of the reinforcing material 238 to intermittently contact the inner steel plate 234.
The inner steel sheet 234 and the reinforcing member 238 is a fire-proof wind-tight steel door of the ship or offshore structure, characterized in that the joining by spot welding of a predetermined interval

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