JP2011122414A - Compartmentation-through part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compartmentation-through part structure, which can secure, even when an organic heat insulating material is installed around piping, excellent blocking performance of a through hole by the expansion residue of a thermally expandable refractory sheet in exposure to heat of fire or the like, or excellent heat resistance. <P>SOLUTION: The compartmentation-through part structure includes piping inserted into a compartmentation-through hole provided at a partitioning part of a structure; an organic heat-insulating material installed around the piping; a thermally expansible refractory sheet installed between the through-hole and the organic heat-insulating material; an organic adiabatic sheet installed between the through-hole and the thermally expandable refractory sheet; and an inorganic fire-protection sealant installed between the through-hole and the adiabatic sheet. The clearance between the through-hole and the piping is blocked by the organic heat-insulating material, the thermally expandable refractory sheet, the organic adiabatic sheet, and the inorganic fire-protection sheet. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fire-blocking section penetration structure provided in a partition section of a structure such as a building or a ship structure.

Even when a fire occurs on one side of a partition part of a structure such as a building, a partition is usually provided on the partition part of the building or the like in order to prevent flames and smoke from spreading to the other side.
When piping is installed inside the building, it is necessary to provide a hole penetrating this section and to insert the piping through the through hole.
However, simply inserting the pipes through the holes causes a problem that flames, smoke, etc. diffuse from one of the compartments to the other through the through holes when a fire or the like occurs.

Various structures have been proposed to cope with this problem.
As such a structure, in order to prevent flames, smoke, etc. from diffusing through the through-holes, a structure in which piping is inserted through the through-holes provided in the compartment, the thermally expandable fireproof A structure in which a sheet is wound and a space between the thermally expandable refractory sheet and the through hole is filled with a mortar, a noncombustible material, or a putty has been proposed (Patent Document 1).

FIG. 6 is a schematic cross-sectional view for explaining a conventional fireproof compartment penetration structure.
Resin piping 130 is inserted through a through-hole formed in a partition 100 provided in a partition such as a building. A heat-expandable fireproof sheet 110 is wound around the piping 130, and a non-combustible fixing material 120 such as mortar is filled in a gap between the through hole and the heat-expandable fireproof sheet 110.
Since the gap between the piping 130 and the through hole is closed by the thermally expandable fireproof sheet 110 and the noncombustible fixing material 120, when a fire or the like is generated near the fireproof compartment through portion structure shown in FIG. However, smoke or the like can be prevented from spreading from one side of the compartment to the other.
In addition, since the heat-expandable fireproof sheet 110 is wound around the piping 130, even when the resin-made piping 130 is burned out by the fireproof section penetration structure shown in FIG. The thermally expandable refractory sheet 110 expands to close the inside of the through hole. Thus, it is possible to prevent a flame or the like generated by a fire or the like from spreading from one of the sections through the through hole to the other.

Japanese Patent Laid-Open No. 2002-167585

  However, when the present inventors have examined, depending on the type of piping used in the fire prevention compartment penetration structure, the through hole provided in the compartment in the event of a fire or the like is sufficiently due to the expansion residue of the thermally expandable fireproof sheet. I noticed that it might not be occluded.

FIG. 7 shows fire prevention in the case of using metal piping 150 in which an organic heat insulating material 140 is installed around instead of the resin piping 130 used in the conventional fire prevention compartment structure shown in FIG. It is a schematic cross section for demonstrating a division penetration part structure, and shows the state before exposure to heat, such as a fire. FIG. 8 shows a state after the fire prevention compartment penetration structure shown in FIG. 7 is exposed to heat such as a fire.
In the case where the organic heat insulating material 140 is installed around the piping 150, the organic heat insulating material 140 is rapidly melted or burned out when the fireproof section through portion structure shown in FIG. 7 is exposed to heat such as fire. Etc., the volume decreases rapidly.
For this reason, the expansion of the heat-expandable fireproof sheet 110 cannot catch up with the rapid volume reduction of the organic heat insulating material 140 due to heat, and the through-hole provided in the compartment is sufficiently blocked by the expansion residue 200 of the heat-expandable fireproof sheet 110. May not be.
This phenomenon becomes more remarkable as the thickness of the organic heat insulating material increases.
If the expansion residue does not sufficiently block the periphery of the piping 150 and a gap is generated between the expansion residue 200 and the piping 150, smoke or toxic gas diffuses from one of the sections where a fire or the like has occurred to the other. Or fire spread.

  The object of the present invention is to close the through holes due to the expansion residue of the thermally expandable refractory sheet when exposed to heat such as a fire, even when an organic heat insulating material is installed around the piping. An object of the present invention is to provide a fireproof section through structure that is excellent in fire resistance.

  As a result of intensive studies by the present inventors in order to solve the above-mentioned problems, the gap between the through hole and the piping is an organic heat insulating material, a thermally expandable fireproof sheet, a heat insulating sheet, and an inorganic sheet, even in the structure of the fireproof compartment penetration. It has been found that a fire-blocking section penetration structure closed by a fire-proof sealing material is suitable for the purpose of the present invention, and the present invention has been completed.

That is, the present invention
[1] Pipings inserted through through holes in a partition provided in the partition of the structure;
An organic heat insulating material installed around the pipes;
A thermally expandable fireproof sheet installed between the through hole and the organic heat insulating material;
An organic heat insulating sheet installed between the through hole and the thermally expandable fireproof sheet;
An inorganic fireproof sealing material installed between the through hole and the heat insulating sheet,
Provided is a fire section penetrating portion structure in which a gap between the through hole and the piping is closed by the organic heat insulating material, a thermally expandable fireproof sheet, an organic heat insulating sheet, and an inorganic fireproof sealant. Is.

The present invention also provides
[2] The organic heat insulating material and the organic heat insulating sheet each exhibit at least one property of softening, melting, decomposition and burning in a temperature range of 80 ° C. to 500 ° C.,
The thickness of the said organic heat insulating material provides the fire prevention division penetration part structure as described in said [1] whose range is 20 mm-500 mm.

The present invention also provides
[3] The fireproof compartment penetration part structure according to the above [1] or [2], in which the inorganic fireproof sealant contains an endothermic inorganic substance.

The present invention also provides
[4] A step of inserting piping having an organic heat insulating material installed around it into a through hole of a partition provided in a partition of the structure;
Winding the thermally expandable fireproof sheet around the pipes;
A step of wrapping an organic heat insulating sheet over the thermally expandable fireproof sheet;
Filling an inorganic fireproof sealing material in a gap between the through hole and the organic heat insulating sheet;
Having at least
The construction method of the fire prevention compartment penetration part structure where the clearance gap between the said through-hole and the said piping is obstruct | occluded with the said organic heat insulating material, a thermally expansible fireproof sheet, a heat insulation sheet, and an inorganic fireproof sealing material is provided.

In the fireproof compartment penetrating structure of the present invention, the gap between the through hole and the piping is closed by the organic heat insulating material, the thermally expandable fireproof sheet, the organic heat insulating sheet and the inorganic fireproof sealant. For this reason, when the fireproof compartment penetration structure of the present invention is exposed to heat such as a fire, among the organic heat insulating material, the thermally expandable fireproof sheet and the organic heat insulating sheet, the organic heat insulating material has a volume due to melting, burning, etc. Cause a decrease. As a result, a gap begins to occur between the piping and the thermally expandable fireproof sheet.
However, on the other hand, when the fireproof compartment penetration structure of the present invention is exposed to heat such as a fire and the organic heat insulating material causes a volume reduction due to melting or burning, the organic heat insulating sheet also has a volume due to melting or burning. Cause a decrease. As a result, the heat-expandable fireproof sheet is in a molten state and can rapidly receive heat from the fluidized organic heat insulating sheet, so that it expands quickly. In addition, the heat-expandable fireproof sheet is also promptly caused by the heat received when a flame due to fire enters the gap formed between the inorganic fireproof sealant and the heat-expandable fireproof sheet due to the organic heat-insulating sheet being burned out. Inflate.
For this reason, in the fireproof compartment penetration part structure of the present invention, the thermal expansible fireproof sheet quickly expands when exposed to heat such as a fire, and therefore the through hole may be blocked by the expansion residue of the expansible fireproof sheet. it can.
In particular, the fireproof compartment penetration structure of the present invention has an expansion of a thermally expandable fireproof sheet when exposed to heat such as a fire even if the thickness of the organic heat insulating material installed around the pipes is 20 mm or more. The through hole can be closed by the residue.

  Moreover, the clearance between the through hole and the piping is closed by the organic heat insulating material, the thermally expandable fireproof sheet, the organic heat insulating sheet, and the inorganic fireproof seal material in the fireproof compartment penetration structure of the present invention. For this reason, it is also possible to prevent smoke and toxic gas from diffusing from one section where a fire or the like has occurred to the other section even when the fire or the like is not directly exposed to heat.

  Further, the through-hole structure of the fire prevention compartment of the present invention causes the volume reduction because the organic heat insulating material exhibits at least one property of softening, melting, decomposition and burning at a temperature of 80 ° C. or more due to heat of fire or the like. The heating from the inner surface side of the through hole to the expandable fireproof sheet is promoted. For this reason, since the said thermally expansible fireproof sheet expand | swells rapidly, a through-hole can be obstruct | occluded.

  Moreover, since the organic heat insulation sheet exists even if the inorganic fireproof sealing material contains an endothermic inorganic substance, the fireproof compartment penetration structure of the present invention prevents the expansion of the thermally expandable fireproof sheet due to the endothermic action of the endothermic inorganic substance. Can be prevented.

  Furthermore, even when the volume of the organic heat insulating sheet is reduced due to heat such as a fire, a gap is generated between the inorganic fireproof sealing material containing the endothermic inorganic substance and the thermally expandable fireproof sheet, so the inorganic fireproofing containing the endothermic inorganic substance It is possible to prevent the endothermic action of the sealing material from reaching the thermally expandable fireproof sheet. Thereby, it can prevent that the expansion | swelling of the said thermally expansible fireproof sheet is prevented. For this reason, it is excellent in fire resistance.

  Moreover, since the construction method of the fire prevention compartment penetration part structure of this invention does not require a complicated process, since it can construct efficiently in a short time, it is excellent in productivity of the fire prevention compartment penetration part structure per unit time.

It is a schematic cross section for demonstrating the fire prevention division penetration part structure of Example 1 of this invention. It is a schematic cross section for demonstrating the fire prevention division penetration part structure of Example 1 of this invention. It is a schematic cross section for demonstrating the fireproof test done with respect to the fireproof division penetration part structure of Example 1 of this invention. It is a schematic cross section for demonstrating the fireproof test done with respect to the fireproof division penetration part structure of Example 1 of this invention. In the fire resistance test of the comparative example 1, it is a schematic cross section which shows the state which observed the expansion residue from the non-heating side of the wall. It is a schematic cross section for demonstrating the conventional fire prevention division penetration part structure. It is a schematic cross section for demonstrating the conventional fire prevention division penetration part structure. It is the schematic cross section which showed the state after the fire prevention division penetration part structure of Example 1 was exposed to heat, such as a fire.

Although this invention is related to a fire prevention compartment penetration part structure, the piping used for this invention first is demonstrated.
The said piping penetrates the through-hole of the division provided in the partition part of structures, such as a building and a ship structure.

Examples of the pipes include refrigerant pipes, hot water pipes, water pipes, sewage pipes, pouring / draining pipes, fuel transfer pipes, hydraulic pipes and other liquid transfer pipes, gas pipes, heating / cooling medium transfer pipes, and vent pipes. And the like, such as gas transfer pipes, electric cables, optical fiber cables, marine cables and the like.
Among these, from the viewpoint of workability, liquid transfer pipes such as refrigerant pipes, hot water supply pipes, water pipes, sewage pipes, pouring / drainage pipes, fuel transfer pipes, hydraulic pipes are preferable, and refrigerant pipes and hot water supply pipes are more preferable. .

  As the pipes, one or more of liquid transfer pipes, gas transfer pipes, cables and the like can be used.

  There is no particular limitation on the shape of the piping, for example, the cross-sectional shape perpendicular to the major axis direction of the piping is a triangle, a polygon such as a quadrangle, a shape such that the sides are different in length, such as a rectangle Examples thereof include shapes such as parallelograms having different internal angles, ellipses, and circles. Among these, those having a cross-sectional shape of a circle, a quadrangle, etc. are preferable because of excellent workability.

The size of the cross-sectional shape of the piping is usually in the range of 1 to 1000 mm, preferably 5 based on the length of the side having the longest distance from the center of gravity of the cross-sectional shape to the outline of the cross-sectional shape. It is in the range of ˜750 mm.
When the pipes are liquid transfer pipes, gas transfer pipes, cables, etc., the range is usually in the range of 0.5 mm to 20 cm, preferably in the range of 1 mm to 10 cm.

Although there is no limitation in particular about the raw material of said piping, For example, what consists of 1 type, or 2 or more types, such as a metal material, an inorganic material, and an organic material, can be mentioned.
Examples of the metal material include iron, steel, stainless steel, copper, and an alloy including two or more metals.
Examples of the inorganic material include glass and ceramic.
Examples of the organic material include synthetic resins such as vinyl chloride resin, ABS resin, vinylidene fluoride resin, polyethylene resin, and polypropylene resin.
The said raw material can use 1 type, or 2 or more types.

The piping used in the present invention is one or more of the metal material pipe, the inorganic material pipe, the organic material pipe, etc., but two or more of the metal material pipe, the inorganic material pipe, the organic material pipe, etc. It can also be used as a laminated tube used for the outer cylinder.
The pipes are preferably metal material pipes, organic material pipes and the like from the viewpoint of handleability, and more preferably metal material pipes such as steel pipes and copper pipes.

The piping used in the present invention is inserted through a through-hole of a partition provided in a partition part of the structure. The partition includes a wall of a building, a partition wall, a floor, a ceiling, etc. Examples include a steel plate provided in a waterproof compartment or a cabin.
By providing through holes in these sections, the piping can be inserted into the through holes.

Next, the thermally expandable fireproof sheet used in the present invention will be described.
The heat-expandable fireproof sheet used in the present invention is a sheet-like heat-expandable resin composition containing a resin component such as an epoxy resin or rubber, a phosphorus compound, neutralized heat-expandable graphite, and an inorganic filler. It is formed by molding.
The heat-expandable fireproof sheet used in the present invention may be a laminate of one or more of inorganic fiber sheets such as glass cloth, metal foils such as aluminum foil and copper foil.

    Commercially available products can be used as the thermally expandable refractory sheet used in the present invention, for example, Sekisui Chemical Co., Ltd. Fibrok (trade name. Epoxy resin or rubber as a resin component, phosphorus compound, thermally expandable graphite and It is possible to obtain and use a sheet-like molded product of a thermally expandable resin composition containing an inorganic filler or the like.

  Among the thermally expandable fireproof sheets used in the present invention, the thickness of the thermally expandable resin composition layer is preferably in the range of 0.5 mm to 20 mm, more preferably in the range of 0.5 mm to 10 mm, and 1 mm to 5 mm. If it is the range, it is still more preferable. If the thickness of the heat-expandable resin composition layer is in the range of 0.5 mm to 20 mm, the workability is excellent, and the fireproof compartment penetration part structure of the present invention is rapidly divided when exposed to heat such as fire. A gap between the fireproof sealing material and the piping can be closed.

  The heat-expandable fireproof sheet used in the present invention is obtained by applying a pressure-sensitive adhesive component to the heat-expandable resin composition constituting the heat-expandable fireproof sheet, in which the adhesive surface is coated with an adhesive. It is possible to use an inflatable refractory sheet itself having a tackiness.

Next, the organic heat insulating material used in the present invention will be described.
The organic heat insulating material used in the present invention is installed around the pipes. Examples of such an organic heat insulating material include urethane foam, polyethylene foam, polypropylene foam, vinyl chloride foam, polystyrene foam, A synthetic resin containing bubbles inside EPDM foam, NBR foam or the like is used.

  A synthetic resin containing bubbles inside is called a synthetic resin foam, but the synthetic resin foam used in the present invention is softened, melted, decomposed and burned out in a temperature range of 80 ° C to 500 ° C. Of these, those exhibiting at least one property are preferable because they do not hinder the expansion of the thermally expandable fireproof sheet.

The thickness of the organic heat insulating material installed around the pipes is preferably in the range of 20 mm to 500 mm, more preferably in the range of 25 mm to 300 mm, and more preferably in the range of 30 mm to 100 mm from the viewpoints of heat insulation and heat insulation. If it is a range, it is still more preferable.
The fireproof compartment penetrating portion structure of the present invention can close the through hole even when the thickness of the organic heat insulating material used is in the range of 20 mm to 500 mm.

Next, the organic heat insulation sheet used for this invention is demonstrated.
The organic heat insulating sheet used in the present invention is installed between the thermally expandable fireproof sheet and the inorganic fireproof sealing material, but the same organic heat insulating material as described above can be used. . The organic heat insulating sheet used in the present invention may use a synthetic resin foam or the like of the same material as the organic heat insulating material, or may use a synthetic resin foam or the like of a different material.
As in the case of the organic heat insulating material, the synthetic resin foam used in the present invention exhibits at least one property of softening, melting, decomposition and burning in the temperature range of 80 ° C. to 500 ° C. Flames such as fire enter between the inorganic fireproof sealing material and the heat-expandable fireproof sheet by fluidizing by heat and efficiently transferring heat to the heat-expandable fireproof sheet or being burned down by heat such as fire. Therefore, the heat-expandable fireproof sheet is preferably expanded efficiently.

  The organic heat insulation sheet used for this invention can provide adhesiveness to the said organic heat insulation sheet itself, or can provide an adhesive layer.

Next, the inorganic fireproof sealing material used in the present invention will be described.
As a sealing material used for this invention, the sealing material for buildings prescribed | regulated by JISA5758, the joint treatment material for gypsum board prescribed | regulated by JISA6914, mortar, putty, caulking etc. can be mentioned, for example.

The inorganic fireproof sealing material preferably contains an endothermic inorganic substance.
The endothermic inorganic substance is not particularly limited as long as it releases water molecules by heating. For example, a metal hydroxide such as calcium hydroxide or aluminum hydroxide, a crystal such as water glass, silica gel, zeolite, or gypsum. Examples include water-containing compounds.

  EXAMPLES Next, although this invention is demonstrated in detail based on drawing based on an Example, this invention is not limited at all by these Examples.

FIG. 1 is a schematic cross-sectional view for explaining a structure for penetrating a fire prevention compartment according to a first embodiment of the present invention.
In Example 1, the wall 1 of the building which consists of RC structure (reinforced concrete structure) is used as a partition provided in the partition part of the structure.
A circular through hole 2 is formed in the wall 1, and piping 3, which is a copper pipe, is inserted through the through hole 2.
The outer diameter of the piping 3 used in this example was 54 mm.
In addition, urethane foam is installed as an organic heat insulating material 4 around the pipes 3 without a gap. The thickness of the organic heat insulating material 4 was 50 mm.

The heat-expandable fireproof sheet 5 was installed in the gap between the organic heat-retaining material 4 and the through hole by winding the heat-expandable fireproof sheet 5 around the organic heat-retaining material 4.
The heat-expandable fireproof sheet 5 is formed by laminating an epoxy resin-containing heat-expandable resin composition (available from Sekisui Chemical Co., Ltd. under the trade name Fiblock) and an aluminum foil laminated glass cloth, That is, an aluminum foil laminated glass cloth was disposed on the through hole side.
Next, the organic heat insulation sheet 6 was wound and fixed on the thermally expandable fireproof sheet 5. The organic heat insulating sheet 6 used in Example 1 is a 3 mm thick polyethylene foam sheet (trade name Softlon Tape, manufactured by Sekisui Chemical Co., Ltd.), and has an adhesive layer on the inside.

FIG. 2 is a schematic cross-sectional view for explaining the structure for penetrating a fire prevention compartment according to the first embodiment of the present invention.
Inorganic mortar containing endothermic inorganic substances such as calcium hydroxide and aluminum hydroxide in the inside of the through-hole 2 of the compartment provided in the partition (see FIG. 1), that is, in the gap between the organic heat insulating sheet 4 and the through-hole 2 The fireproof sealing material 7 was injected and fixed. As a result, the fireproof compartment penetration structure of Example 1 was obtained.

In the fire prevention compartment penetration structure of Example 1, the gap between the through hole 2 and the piping 3 is closed by the organic heat insulating material 4, the thermally expandable fireproof sheet 5, the organic heat insulating sheet 6, and the inorganic fireproof sealing material 7. Has been.
Inside the through hole 2, the thermally expandable fireproof sheet 5 may cover the whole surface of the organic heat insulating sheet 4 or a part thereof. As shown in FIG. 2, the thermally expandable refractory sheets are preferably installed at both ends inside the through hole 2.

  2 is closed between the through-hole 2 and the piping 3, so that even if smoke or toxic gas is generated on one side of the compartment due to a fire or the like, the through-hole It is possible to prevent smoke and toxic gas from diffusing to the other side of the compartment.

FIGS. 3-4 is a schematic cross section for demonstrating the fireproof test done with respect to the fireproof division penetration part structure of Example 1 of this invention.
A fire resistance test based on ISO834 was performed from the A side (left side of FIG. 3) of FIGS.
When the fire resistance test is started, as shown in FIG. 3, the organic heat insulating material 4 and the organic heat insulating material sheet 6 included in the fireproof section penetration portion structure of Example 1 are melted and lost, and the thermally expandable fireproof sheet 5 The expansion residue 10 started to expand.
It was observed that the expansion of the thermally expandable refractory sheet 5 was promoted because hot air penetrated into the gaps lost when the organic heat insulating sheet 4 was melted.
As a result of the fire resistance test, the organic heat insulating material in the through hole was burned out, but the gap between the piping 3 and the inorganic fireproof sealing material 7 was closed by the expansion residue 10 of the thermally expandable fireproof sheet 5. Therefore, no flame or smoke leakage was observed on the B side of FIGS. 3 and 4 (the right side of FIGS. 3 and 4).

[Comparative Example 1]
In the case of Example 1, the fireproof test based on ISO834 was implemented with respect to the fireproof section penetration part structure exactly the same as the case of Example 1 except having omitted the installation of the organic heat insulating sheet 6.
FIG. 5 is a schematic cross-sectional view showing a state in which expansion residue is observed from the non-heated side of the wall 1 in the fire resistance test of Comparative Example 1.

As a result of the fire resistance test, leakage of flame and smoke was observed on the non-heated side of the wall 1.
Observation from the non-heated side of the wall 1 after the end of the fire resistance test showed that the through hole 2 remained unblocked around the piping 3 and the expansion residue 10 did not reach the piping 3. .

DESCRIPTION OF SYMBOLS 1 Hollow wall 2 Through-hole 3 Pipings 4,140 Organic heat insulating material 5,110 Thermal expansion fireproof sheet 6 Organic heat insulation sheet 7 Inorganic fireproof sealing material 10,200 Expansion residue 11 Epoxy resin containing thermal expansion resin composition 12 Aluminum foil Laminated glass cloth 20 Expansion residue 100 Compartment 110 Sleeve 120 Non-combustible fixing material 130, 150 Piping A Heated side of fire test B B Non-heated side of fire test

Claims (4)

Piping inserted through a through-hole in a partition provided in the partition of the structure;
An organic heat insulating material installed around the pipes;
A thermally expandable fireproof sheet installed between the through hole and the organic heat insulating material;
An organic heat insulating sheet installed between the through hole and the thermally expandable fireproof sheet;
An inorganic fireproof sealing material installed between the through hole and the heat insulating sheet,
A fire prevention compartment penetration structure, wherein a gap between the through hole and the piping is closed by the organic heat insulating material, a thermally expandable fireproof sheet, an organic heat insulating sheet, and an inorganic fireproof sealing material. The organic heat insulating material and the organic heat insulating sheet each exhibit at least one property of softening, melting, decomposition and burning in a temperature range of 80 ° C. to 500 ° C.,
The fireproof compartment penetration structure according to claim 1, wherein the thickness of the organic heat insulating material is in a range of 20 mm to 500 mm.   The fireproof compartment penetration structure according to claim 1 or 2, wherein the inorganic fireproof sealant contains an endothermic inorganic substance. A step of inserting piping having an organic heat insulating material installed around it into a through-hole of a partition provided in a partition part of the structure;
Winding the thermally expandable fireproof sheet around the pipes;
A step of wrapping an organic heat insulating sheet over the thermally expandable fireproof sheet;
Filling an inorganic fireproof sealing material in a gap between the through hole and the organic heat insulating sheet;
Having at least
A construction method for a fire-blocking section penetration structure in which a gap between the through-hole and the piping is closed by the organic heat insulating material, a thermally expandable fireproof sheet, a heat insulating sheet, and an inorganic fireproof sealant.