JP2007269200A - Fireproof panel for ship - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof panel for ships satisfying even the Class A fireproof standard specified by the SOLAS Convention. <P>SOLUTION: The fireproof panel 1 for ships constitutes a wall face 2 or a ceiling face 3 for forming a unit space closed by a hull. A plate-like heat insulating block 13 molded corresponding to the outer shape of a panel is held by a surface plate 11 and a back plate 12 manufactured of a thin steel plate. The surface plate 11 and the back plate 12 are folded at right and left edges to form a pair of a recessed part 14 and a projecting part 15 of a tongue structure. The fitting width of the recessed part 14 and the projecting part 15 is set to be ≥ 90%, and the fitting depth of the recessed part 14 and the projecting part 15 is set to be 60-100% of the panel thickness in the fireproof panel 1 for ships. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a fire protection panel for a ship that is installed on the hull from the outside and forms a wall surface or a ceiling surface that forms a closed unit section.

  A general ship divides the hull into a plurality of vertical layers with multiple decks, and partitions the space between the decks of each layer into a plurality of horizontal unit partitions with bulkheads. A closed unit compartment such as a passenger cabin, passenger cabin, steering room, radio room, cargo handling control room, passage room or staircase room, locker room or store room, engine room, etc. is formed. For example, the decks and bulkheads of the unit compartments that require Class A fire protection standards stipulated by the International Maritime Life Safety Convention are made of steel plates and are fixed to the hull by welding. For this reason, the steel plate deck or partition wall must be free from distortion due to welding heat, and it takes time to form the unit compartments, and it is difficult to perform the outfitting work of each unit compartment.

  In order to solve this problem, as can be seen in Patent Document 1, a technique has been proposed in which a wall surface or a ceiling surface forming a unit section is configured by assembling a fireproof panel instead of a steel plate partition. The fireproof panel used in this prior art has a configuration in which a core material such as a lock board or rock wool is covered with a decorative steel plate, and the panels are assembled by inserting joints into grooves provided on both left and right edges.

Japanese Patent Laid-Open No. 10-273093 ([0015])

  A fire prevention panel is relatively easy to improve fire prevention performance by devising members and structures. However, in the case of a ship, the wall or ceiling surface constructed by assembling the panels must pass the Class A fire prevention standard or the Class B fire prevention standard stipulated by the International Maritime Life Safety Convention. There is a need to improve the fire performance of the constructed wall or ceiling. For example, in the case of the A0 standard, it is necessary to irradiate the flame from one side of the wall surface and the ceiling surface and the flame does not penetrate for at least 60 minutes. For this reason, in particular, the structure of the left and right edges of the fireproof panel is important for the mutual assembly of the panels where flames may penetrate.

  The case where the flame penetrates through the mutual assembly portion of the panels is a case where the deformation of each fire prevention panel caused by the irradiation of the flames extends to both the left and right edges, and the assembly portions of the assembled panels warp to form a gap. From this, it is sufficient that the left and right edges to be assembled can suppress or prevent the mutual deformation of the panel assembling portions, and even if the deformation is allowed, the deformation amount can be reduced so that no gap is formed. This does not necessarily mean that the deformation of the fireproof panel is not permitted, but it may mean that the deformation of the fireproof panel itself may be permitted and the influence of the deformation does not have to reach the assembly part of the panels.

  In this regard, the fireproof panels disclosed in Patent Document 1 are not directly assembled to each other, but are merely assembled via joints. For this reason, the left and right edges to be assembled do not suppress or prevent mutual deformation, and when the joint for assembling the panels is deformed by heat, the deformation is changed and the left and right edges of the fire protection panel are deformed to form a gap. As a result, there is a risk that a flame may penetrate through the gap. Therefore, in order to develop a fire prevention panel that satisfies the Class A fire prevention standards stipulated by the International Maritime Life Safety Convention, we examined the part of the panel assembly, that is, the structure of the left and right edges.

  As a result of the study, what was developed is a fireproof panel for ships that constitutes the wall or ceiling surface that forms the unit compartment closed to the hull, and a plate-like heat insulation block molded to the panel outer shape is made of thin steel plate The front plate and the back plate are sandwiched, and the front plate and the back plate are bent at both left and right edges to form a pair of concave and convex portions having a joint structure, and the fitting width of the concave and convex portions is set to the panel. It is a fireproof panel for a ship having a size of 90% or more of the thickness and a fitting depth of the concave and convex portions of 60% to 100% of the panel thickness. The fitting width of the concave and convex portions is naturally not equal to the panel thickness, so the upper limit is less than 100%. The panel thickness, panel width and panel height of the fire protection panel are free, but according to the conventional fire protection panel for ships, the panel thickness conforms to the standard of 25mm to 50mm, the panel width and panel height are It determines suitably according to the wall surface or ceiling surface which forms a unit division.

  The fire prevention panel for a ship of the present invention is a structure in which a plate-like heat insulation block molded to the panel outer shape is sandwiched between a front plate and a back plate made of a thin steel plate while ensuring the fire prevention performance of the panel alone, By bending the back plate at both left and right edges to form a pair of concave and convex portions of the joint structure, the fire prevention performance as a wall surface or ceiling surface constructed by assembling the fire prevention panel with the joint structure is improved. Yes. Then, the fitting width of the concave and convex portions in the joint structure is 90% or more of the panel thickness, and the fitting depth of the concave and convex portions is 60% to 100% of the panel thickness. Accordingly, the left and right edges assembled by the joint structure can suppress or prevent mutual deformation while realizing a strong assembly part of the panels with the joint structure. In particular, the fitting depth of the recesses and protrusions is 60% to 100% of the panel thickness, even if the front plate or the back plate is deformed by heat while realizing the above-mentioned strong assembly portion. The deformation in the assembly portion is appropriately absorbed, and the influence of the deformation on the assembly portion is reduced.

  Here, the concave portion whose fitting width is 90% or more of the panel thickness and whose fitting depth is 60% to 100% of the panel thickness projects the front plate and the back plate as they are and faces each other. A configuration in which a recess outer fitting surface is formed, and an end face of a heat insulating block sandwiched between the front plate and the back plate is formed at a position recessed by 60% to 100% of the panel thickness from the edge of the concave fitting outer surface, or a front plate And the back plate are folded back to form the outer surface of the recess, and the end face of the heat insulating block sandwiched between the front plate and the back plate is 60% to 100% of the panel thickness from the edge of the outer surface of the recess. The surface plate and the back plate are folded back so as to wrap around each flange of the U-shaped reinforcing material with a configuration formed in a recessed position and a flange protruding amount of 60% to 100% of the panel thickness. The end of the heat insulation block that forms the fitting surface and is sandwiched between the front and back plates The surface is formed by contacting the web of the reinforcing material.

  Also, the fitting width is the panel thickness minus the thickness of the front and back plates or the total of twice the thickness, and the fitting depth is 60% to 100% of the panel thickness. A certain convex part is in the range of 60% to 100% of the panel thickness from the end face of the heat insulating block between which the front plate and the back plate sandwich the convex portion internal fitting surface with a difference in thickness of the front plate and the back plate. The front plate and the back plate have the formed structure, the convex plate internal fitting surface with the total step of each plate thickness or the total step of each plate thickness and the plate thickness of the reinforcing material on the front plate and the back plate. It forms by the structure formed in the range of 60%-100% of panel thickness from the end surface of the heat insulation block to clamp.

  Specifically, the front and back plates of the fireproof panel are normal steel plates (cold rolled steel plates) or stainless steel plates having a thickness of 0.4 mm to 1.5 mm, preferably 0.6 mm to 1.0 mm. Normal steel plates or stainless steel plates with a thickness of less than 0.4 mm are easily deformed by flame irradiation, and conversely, normal steel plates or stainless steel plates with a thickness of more than 1.5 mm are less likely to form recesses and projections with a continuous structure. And increase the weight of the fire protection panel. The plate thickness of the front plate and the back plate is basically the same. For example, the plate thickness of the front plate serving as the inner surface of the unit section may be made relatively thick with respect to the back plate. If this fireproof panel is used instead of a steel sheet (thickness 6 mm) that satisfies the Class A fire safety standard or the Class B fire safety standard defined by the International Maritime Life Safety Convention, it is 1/3 to 1/4 compared to the steel sheet. It is preferable to determine the thicknesses of the front plate and the back plate so that the weight is about the same.

In addition, the heat insulation block of the specific fireproof panel has a configuration in which rock wool is molded at a density of 60 kg / m ^{3 to} 160 kg / m ³ , preferably a density of 80 kg / m ^{3 to} 140 kg / m ³ , and glass wool is 20 kg / m in density. m ^{3 to} 300 kg / m ³ , preferably a structure molded at a density of 30 kg / m ^{3 to} 280 kg / m ³ , or ceramic wool having a density of 40 kg / m ^{3 to} 300 kg / m ³ , preferably a density of 60 kg / m ³ Any one or combination of configurations molded at ˜280 kg / m ³ is preferred. For example to fire panel molded rock wool lower than the density 60 kg / m ³ reduces the panels single fire performance, fire panel rockwool molded higher than 160 kg / m ³ is the thermal conductivity is too low, the flame There is a possibility that heat is accumulated in either the front plate or the back plate that receives the irradiation of the light, and on the contrary, the deformation of the front plate or the back plate is promoted. The density range of glass wool and ceramic wool is also limited for the same reason.

  According to the present invention, it becomes possible to provide a fire-proof panel that satisfies the Class A fire-proof standard defined by the International Maritime Life Safety Convention. The fire-proof panel is used to form a wall surface or ceiling surface that directly forms a unit compartment in the ship's body. Or the wall surface or ceiling surface of the partition module that constitutes the unit partition can be configured. The fireproof panel of the present invention is similar in appearance to various conventionally known fireproof panels. However, the fireproof panel of the present invention is constructed by forming a joint structure between the panels with a joint structure having a concave portion and a convex portion having a specific size. The wall surface or ceiling surface constructed by assembling this fire prevention panel as well as a single unit can pass the A class fire prevention standard or the B class fire prevention standard defined by the International Maritime Life Safety Convention. As a result, the present invention expands the range of use of fire prevention panels in ships, reduces the labor and labor required to construct unit sections, enables rigging work in a short period of time, and consequently reduces the manufacturing cost of ships Bring.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an example of a fire protection panel 1 according to the present invention, FIG. 2 is an enlarged view of a portion indicated by an arrow A in FIG. 1, FIG. 3 is an enlarged view indicated by an arrow B in FIG. 2 is an enlarged view corresponding to FIG. 3, FIG. 6 is a further enlarged view corresponding to FIG. 2, FIG. 7 is a further enlarged view corresponding to FIG. 3, and FIG. FIG. 9 is a partial perspective view illustrating an example of a unit section configured using the fire prevention panel 1, and FIG. 9 is a partial perspective view corresponding to FIG. 8 illustrating another example of the unit section configured using the fire protection panel 1 of the present example. FIG. 10 is a partial perspective view showing a corner portion of a unit section configured by using the fireproof panel 1 of this example.

As shown in FIG. 1, the fireproof panel 1 of this example is formed into a symmetrical shape by folding a normal steel plate having a thickness of 0.6 mm facing the front and back direction (the direction connecting the lower left and upper right in FIG. 1). The heat insulating block 13 is formed by sandwiching the rock wool with a density of 120 kg / m ³ and corresponding to the panel outer shape by the surface plate 11 and the back plate 12. The fireproof panel 1 of this example has a panel thickness _Hp of 50 mm. This fireproof panel 1 has a heat insulating block 13 exposed in the vertical direction, but on both edges in the left and right direction, a pair of jointed concave and convex portions 14 and convex parts 15 are provided as parts to be assembled with each other. Each is formed. As will be described later, the unit section is formed by assembling a plurality of fire prevention panels 1 of the present example on the floor surface 4 made of, for example, a steel plate to constitute the wall surface 2 and the ceiling surface 3 (see FIGS. 8 to 10). ).

The fire prevention panel 1 of the present invention is characterized by the fact that the assembly part between the fire prevention panels 1 has a specific inherited structure in order to satisfy the Class A fire prevention standard or the Class B fire prevention standard defined by the International Maritime Life Safety Convention. Have. As shown in FIGS. 2 and 3, the fire prevention panel 1 of this example has a fitting width H ₁ , H ₂ of the concave portion 14 and the convex portion 15 in the above-described joint structure, which is about 93% of the panel thickness H _p. The fitting depths D ₁ and D ₂ of the concave portions 14 and the convex portions 15 are set equal to the fitting widths H ₁ and H ₂ , that is, about 93% of the panel thickness H _p. A concave portion 14 and a convex portion 15 having a square shape are formed.

As shown in FIG. 2, the concrete recess 14 includes the surface plate 11 and the surface plate 11 so as to wrap around the flange 1411 of the U-shaped reinforcing member 141 whose protrusion amount of the flange 1411 is about 93% of the panel thickness. The back plate 12 is folded back to form a concave outer fitting surface 143 that protrudes in parallel in the front-back direction, and the end surface 131 of the heat insulating block 13 sandwiched between the front plate 11 and the back plate 12 is the web 1412 of the reinforcing member 141. It is the structure made to contact | abut. Now, the fitting depth D ₁ of the recess 14 becomes approximately the amount of projection of the flange 1411 of the stiffener 141 is about 93% of the panel thickness. Further, if the thickness of the steel plate constituting the reinforcing member 141 is 0.6 mm, the thickness of each recess outer fitting surface 143 is twice (1.2 mm) the plate thickness (0.6 mm) of the front plate 11 or the back plate 12. Further, the thickness obtained by adding the plate thickness (0.6 mm) of the reinforcing member 141 to 1.8 mm, that is, the strength and rigidity necessary to sandwich and hold the convex portion 15 to be fitted can be secured. The fitting width H ₁ of recess 14 from the panel thickness H _p is a remainder obtained by subtracting the thickness of the respective recess-fitting face 143 is about 93% of the panel thickness _{H p (= (50mm-1.8mm} × 2) / 50 x 100%).

Specifically, as shown in FIG. 3, the convex portion 15 has a convex portion internal fitting surface 152 in which the surface plate 11 and the back surface plate 12 are provided with a total step 151 of each plate thickness and the plate thickness of the reinforcing member 141. Is formed in a range of about 93% of the panel thickness from the end surface 131 of the heat insulating block 13 sandwiched by the front plate 11 and the back plate 12. The convex inner fitting surface 152 forms a convex engaging surface 153 with a certain width folded from the end edge, and is pressed by the convex engaging surface 153 so that the end surface 131 of the heat insulating block 13 does not protrude. Now, the fitting depth D ₂ of the convex portion 15 is equal to the range of forming the convex portion Hamamen 152, is about 93% of the panel thickness. Further, as described above, if the thickness of the reinforcing member 141 is 0.6 mm, the step 151 of each convex portion fitting surface 152 with respect to the front surface plate 11 or the back surface plate 12 is the thickness of the front surface plate 11 or the back surface plate 12 ( The thickness obtained by adding the thickness (0.6 mm) of the reinforcing material 141 to twice (1.2 mm) of 0.6 mm), that is, 1.8 mm. The fitting width of H ₂ the projection 15 is a residual obtained by subtracting the step 151 of each convex portion Hamamen 152 relative to the surface plate 11 or back plate 12 from the panel thickness H _p is about 93% of the panel thickness H _p (= (50mm-1.8mm × 2) / 50 × 100%).

As described above, the concave portion 14 and the convex portion 15 of the joint structure in the fireproof panel 1 of the present invention have a large ratio of the fitting widths H ₁ and H ₂ and the fitting depths D ₁ and D _{2 to} the panel thickness H _p . Therefore, the fireproof panel 1 mutual strong assembly part is realized. In addition, since the ratio of the fitting depths D ₁ and D ₂ to the panel thickness H _{p is} particularly large, deformation of the outer surface of the convex portion continuous with the front surface plate 11 or the rear surface plate 12 can be suppressed or prevented, and the front surface plate 11 is temporarily assumed. Alternatively, even when the back plate 12 is deformed by heat, the fitting relationship of the joint structure is not impaired by the deformation of the outer surface of the convex portion, so that a gap is formed in the assembled portion of the fireproof panels 1. As a result, the penetration of the flame can be prevented.

Here, the deformation of the outer surface of the convex portion is proportional to the amount of heat applied to the front surface plate 11 or the back surface plate 12, and inversely proportional to the thermal conductivity of the heat insulating block 13. That is, if the thermal conductivity of the heat insulating block 13 is low, for example, the amount of heat applied to the front plate 11 is difficult to be transmitted to the back plate 12 and is accumulated in the front plate 11 to greatly deform the outer surface of the convex portion. If the thermal conductivity is high, the amount of heat applied to the front plate 11 is also transmitted to the back plate 12 and can be released from the back plate 12. Therefore, deformation of the outer surface of the convex portion continuous with the front plate 11 can be suppressed. . From this, the fire prevention panel 1 of this example forms the recessed part 14 and the convex part 15 of the above-mentioned continuous structure, and also comprises the heat insulation block 13 in order to set the heat conductivity of the heat insulation block 13 comparatively high. The density of rock wool is 120kg / m ³ . The density of such rock wool is the size of the fireproof panel 1, the fitting depths D ₁ and D ₂ and the fitting widths H ₁ and H ₂ of the concave portions 14 and the convex portions 15 of the joint structure, the front plate 11 and the back plate. Since it depends on the plate thickness of 12, it is desirable that it be determined appropriately according to the Class A fire safety standard or the Class B fire safety standard established by the International Maritime Life Safety Convention.

The succession structure in the fire prevention panel 1 of this invention can also be comprised as follows. As shown in FIG. 4, the recess 14 protrudes as it is from the front plate 11 and the back plate 12 to form a concave outer fitting surface 143, and the end surface 131 of the heat insulating block 13 sandwiched between the front plate 11 and the back plate 12. Can be formed at a position that is recessed by about 93% of the panel thickness from the end edge of the recess outer fitting surface 143. The fitting depth D ₃ of the recess 14 is about 93% of the panel thickness as described above, but the fitting width H ₃ is about 98% of the panel thickness H _p (= (50 mm−0.6 mm × 2) / 50 × 100%). From this, as shown in FIG. 5, the pair of convex portions 15 includes the convex portion fitting surface 152 having a step 151 corresponding to each plate thickness on the front plate 11 and the rear plate 12, and the front plate 11 and the rear plate. 12 is formed in the range of about 93% of the panel thickness from the end face 131 of the heat insulating block 13 sandwiched, and the fitting width H ₄ and the fitting depth D ₄ are set to the fitting width H ₃ and the fitting depth D ₃ . It is matched.

Further, as shown in FIG. 6, the recess 14 is folded back to form the recess outer fitting surface 143 by folding the front plate 11 and the back plate 12, and the heat insulating block sandwiched between the front plate 11 and the back plate 12. The thirteen end surfaces 131 can be formed at a position recessed by about 93% of the panel thickness from the edge of the recess outer fitting surface 143. Here, in the recessed portion 14 of this other example, a recessed portion engaging surface 144 for pressing the end surface 131 of the heat insulating block 13 is formed by using the folded front surface plate 11 and back surface plate 12. The fitting depth D ₅ of the recess 14 is about 93% of the panel thickness as described above, but the fitting width H ₅ is about 95% of the panel thickness H _p (= (50 mm−0.6 mm × 2 × 2). ) / 50 × 100%). From this, as shown in FIG. 7, the pair of convex portions 15 includes the convex portions internal fitting surfaces 152 provided with a step 151 twice the thickness of each of the front plate 11 and the rear plate 12. It is formed in the range of about 93% of the panel thickness from the end face 131 of the heat insulating block 13 sandwiched by the back plate 12, and the fitting width H ₆ and the fitting depth D ₆ are set to the fitting width H ₅ and the fitting depth D. Match to ₅ .

  Next, the unit section comprised using the fire prevention panel 1 of this example (FIGS. 1-3) is demonstrated. The fireproof panel 1 of the present invention can be used for either a direct type unit section configured on the deck of a ship or a module type unit section configured as a section module constructed outside the ship. The direct type unit section uses a steel plate deck as the floor surface 4, and the module type unit section uses a steel plate alone or a steel plate provided with a reinforcing floor frame as the floor surface 4. In the latter module type unit section, when only the steel plate is used as the floor surface 4, the steel plate to be the floor surface 4 is grounded on the deck of the ship, and the steel plate is welded and fixed to the deck. Moreover, when the steel plate provided with the floor frame is used as the floor surface 4, the deck of the ship is opened corresponding to the floor surface 4, the floor surface 4 is fitted into the opening, and the floor surface 4 is also used as the deck. You can also.

  As shown in FIG. 8, the wall surface 2 of the unit section constitutes a base frame 41 fixed by welding with a C-shaped steel facing downward on the floor surface 4 along the horizontal section of the unit section. A panel holder 42 made of a channel material opened upward is fixed by welding, and a plurality of fire prevention panels 1 are inserted along the panel holder 42. Since the panel holder 42 also has a role as a guide member for aligning the arrangement direction of the fire prevention panels 1 constituting the wall surface 2, a long channel material is used along the continuous wall surface 2 as in this example. It is desirable. Further, fixing the panel support 42 to the base frame 41 made of C-type steel fixed to the floor surface 4 improves the rigidity of the steel plate constituting the floor surface 4 and is a channel material made of a thin steel plate. This is because the rigidity of the wall 2 is improved and the stable standing state of the wall surface 2 is maintained.

  The ceiling surface 3 of the unit section is fitted with a panel support 21 made of a channel material provided with an inner flange similar to the panel receiver 42 to the fireproof panel 1 constituting the wall 2 from above, and the panel support A plurality of fire prevention panels 1 are horizontally laid on the inner flange of the tool 21. The panel support 21 has a role as a guide member for aligning the arrangement direction of the fire prevention panels 1 constituting the wall surface 2 and a role as a guide member for adjusting the integrity of the fire prevention panel 1 constituting the ceiling surface 3 as a horizontal plane. Therefore, it is desirable to use a long channel material along the continuous ceiling surface 3 as in this example. However, if it works as a similar guide member, for example, as shown in FIG. 9, a panel support 22 made of an angle member constituting the inner flange is screwed to the inside of the fire prevention panel 1 of the wall surface 2, and the panel The ceiling surface 3 may be configured by horizontally laying a plurality of fire prevention panels 1 on the inner flange of the support 22.

  The fire prevention panels 1 constituting the wall surface 2 and the ceiling surface 3 are connected to each other without gaps by a joint structure, and are screwed to the panel support 42 or the panel support 21 to be restrained and fixed in position. The Here, since the panel support 21 is fitted (see FIG. 8) or screws (see FIG. 9), the ceiling surface 3 with respect to the four-side wall surface 2 is fitted to the upper edge of each wall surface 2. There is no gap between the ceiling surface 3 and the ceiling surface 3. On the other hand, for example, as shown in FIG. 10, the corners of the front wall surface 2 and the side wall surface 2 are fixed by screwing the panel joint member 23 made of an angle material from the inside. It is possible to completely close the gap between the fireproof panels 1 constituting the part. If the wall surface 2 and the ceiling surface 3 that are connected without gaps as described above satisfy the Class A fire safety standard or the Class B fire safety standard defined by the International Maritime Life Safety Convention, the floor surface 4 is made of a steel plate. The unit compartment in this example satisfies the Class A fire protection standard or the Class B fire prevention standard defined by the International Maritime Life Safety Convention.

  In an actual unit section, a floor surface covering material such as a decorative tile is spread on the steel plate constituting the floor surface 4, or a decorative sheet is pasted over the plurality of fire prevention panels 1 constituting the wall surface 2 or the ceiling surface 3, Arrange and improve the texture of each. For example, when the unit standard is a kitchen room, it is preferable that the floor surface 4 is excellent in drainage, and therefore, a decorative tile having water repellency may be spread. Moreover, the wall surface 2 can improve the integrity of the external appearance as the wall surface 2 by sticking a stainless film over the plurality of fire prevention panels 1, improve the texture of the entire wall surface 2, and can also improve the fire resistance. . In particular, since the modular unit compartment can be constructed outside the ship, the installation work for attaching the decorative tile or the decorative sheet is also free, and as a result, a high-quality kitchen room can be provided as compared with the conventional one.

Not only the fire prevention panel of the present invention but also the evaluation of meeting the Class A fire protection standard or the Class B fire prevention standard stipulated by the International Maritime Life Safety Convention is not determined by structural specifications, but by the International Maritime Organization (IMO). ) Must pass a fire test (see Resolution A.754 (18)) in accordance with the unified laws and regulations (FTP Code Part 1 and Part 3) for fire tests. Therefore, a fireproof panel according to the present invention was prototyped, and a fire test was conducted for the A0 standard (when the flame was irradiated for 60 minutes, there was no flame penetration, and the maximum heat radiation amount E _w was less than 56.5 kW / m ² ) Carried out.

The test body is constructed by assembling four fireproof panels as shown above (see Fig. 1) in a substantially square test frame to form a wall, and irradiating flame with a gas burner from the front (surface plate) side of the wall. The amount of heat radiation from the (back plate) side was measured from the start of irradiation (0 minutes) to 60 minutes. Four fire panels were used, and the wall surface was 2500mm high and 2440mm wide. Each fire prevention panel had a panel thickness of 50 mm, the front plate and the back plate were made of cold-rolled steel plate having a thickness of 0.6 mm, and the heat insulation block was made of glass wool with a density of 120 kg / m ³ . The fitting width of the concave and convex portions constituting the joint structure was about 46 mm, and the fitting depth was also about 46 mm. As a result of the test, it was confirmed that the maximum heat radiation amount was less than the predetermined value even after 60 minutes of flame irradiation, and no penetration of flames from the part where the panels were assembled was observed, satisfying the A0 standard.

It is a perspective view showing an example of the fire prevention panel based on this invention. FIG. 2 is an enlarged view of a portion indicated by an arrow A in FIG. FIG. 2 is an enlarged view of a portion indicated by an arrow B in FIG. 1. FIG. 3 is an enlarged view corresponding to FIG. 2 in another example of a fireproof panel. FIG. 4 is an enlarged view corresponding to FIG. 3 in another example of a fireproof panel. FIG. 4 is an enlarged view corresponding to FIG. 2 in another example of a fireproof panel. FIG. 6 is an enlarged view corresponding to FIG. 3 in another example of a fireproof panel. It is a fragmentary perspective view showing an example of the unit division comprised using the fire prevention panel of this example. FIG. 9 is a partial perspective view corresponding to FIG. 8 illustrating another example of a unit section configured using the fireproof panel of the present example. It is a fragmentary perspective view showing the corner | angular part of the unit division comprised using the fire prevention panel of this example.

Explanation of symbols

1 Fire prevention panel
11 Surface plate
12 Back plate
13 Insulation block
14 Recess
15 Convex part 2 Wall surface
21 Panel support
22 Other panel supports
23 Panel joint member 3 Ceiling surface 4 Floor surface

Claims (5)

A fireproof panel for a ship that constitutes a wall or ceiling that forms a unit compartment closed to the hull, and sandwiches a plate-like heat insulation block molded to the panel outer shape with a surface plate and a back plate made of thin steel plate The front plate and the back plate are bent at both left and right edges to form a pair of concave and convex portions having a joint structure, and the fitting width of the concave and convex portions is 90% or more of the panel thickness. A marine fireproof panel in which the fitting depth of the concave and convex portions is 60% to 100% of the panel thickness. The fireproof panel for a marine vessel according to claim 1, wherein the front plate and the back plate are a normal steel plate or a stainless steel plate having a thickness of 0.4 mm to 1.5 mm. The fireproof panel for a ship according to claim 1, wherein the heat insulating block is formed by molding rock wool at a density of 60 kg / m ^{3 to} 160 kg / m ³ . The fireproof panel for a ship according to claim 1, wherein the heat insulation block is formed by molding glass wool at a density of 20 kg / m ^{3 to} 300 kg / m ³ . Insulation block fire panel for a ship according to claim 1 wherein formed by molding the ceramic wool density ^{40kg / m 3 ~300 kg / m} 3.

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