JP6920373B2 - Fire-resistant structure of the penetration part and heat-expandable fire-resistant equipment - Google Patents

Description

In the present invention, a wiring / piping material is inserted through a penetrating portion formed by penetrating a fireproof compartment of a building in the thickness direction, and heat is applied between the inner surface of the penetrating portion and the outer surface of the wiring / piping material. The present invention relates to a fireproof structure of a penetrating portion provided with a heat-expandable fireproof tool that expands.

Conventionally, when wiring / piping material is penetrated through a fireproof partition wall (fireproof compartment) in a building, a fireproof structure is provided at the penetrating portion of the fireproof partition wall (see, for example, Patent Document 1). In the fire protection structure (fireproof structure) of Patent Document 1, a cylindrical fireproof treatment tool is installed in a through hole penetrating the fireproof partition wall in the thickness direction. Further, a heat-expandable filler is filled between the inner peripheral surface of the fire protection treatment tool and the outer peripheral surface of the wiring / piping material. The heat-expandable filler is made of a heat-expandable putty, and the wiring / piping material is held by the heat-expandable filler on the fire-prevention partition wall. Then, when a fire or the like occurs, the fire protection treatment tool and the heat-expandable filler expand due to the heat of the fire or the like, and the voids formed by the burning of the wiring and piping materials are closed.

Japanese Unexamined Patent Publication No. 2011-117574

However, in the fire protection structure of Patent Document 1, when a force for moving the wiring / piping material in the axial direction is applied, the fire protection treatment tool and the heat-expandable filler come off from the fire protection compartment wall together with the wiring / piping material. Will end up. Therefore, when a force for moving the wiring / piping material in the axial direction is applied, it is conceivable that the fire protection treatment tool and the heat-expandable filler can be moved together with the wiring / piping material. However, if the fire protection treatment tool and the heat-expandable filler are also moved, a gap will be formed between the outer peripheral surface of the wiring / piping material and the inner peripheral surface of the penetrating portion, and smoke will occur in the event of a fire or the like. It becomes the route of.

According to the present invention, even if a force for moving the wiring / piping material in the axial direction is applied, the heat-expandable refractory can be prevented from coming off from the fire protection compartment, and the through hole becomes a smoke path. The purpose is to provide a fireproof structure for penetrations that can be prevented.

In order to solve the above problems, in the fireproof structure of the penetrating portion of the embodiment of the present invention, wiring and piping materials are inserted through the penetrating portion formed by penetrating the fireproof compartment of the building in the thickness direction. It is a fireproof structure of a penetrating portion in which a heat-expandable refractory tool that expands by heat is provided between the inner surface of the penetrating portion and the outer surface of the wiring / piping material.
The heat-expandable refractory has a tubular refractory body having an opening at one end in the axial direction and a flange portion formed at one end in the axial direction of the refractory body.
The heat-expandable refractory is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material, and is immovably installed with respect to the fire-prevention compartment.
In the gap, a closing member made of a foamable material, which is filled in the gap while allowing the wiring / piping material to move in the axial direction with respect to the heat-expandable refractory, is formed on the outer surface of the wiring / piping material. Provided without being glued
It is characterized in that the closing member remains positioned in the penetrating portion when the wiring / piping material moves in the axial direction.

In the fireproof structure of the penetrating portion according to the embodiment of the present invention, wiring / piping material is inserted through the penetrating portion formed by penetrating the fireproof compartment of the building in the thickness direction, and the inner surface of the penetrating portion and the wiring / It is a fire-resistant structure of a penetrating part in which a heat-expandable fire-resistant tool that expands due to heat is provided between the outer surface of the piping material.
The heat-expandable refractory has a tubular refractory body having an opening at one end in the axial direction and a flange portion formed at one end in the axial direction of the refractory body.
The heat-expandable refractory is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material, and is immovably installed with respect to the fire-prevention compartment.
In the gap, a closing member made of a foamable material, which is filled in the gap while allowing the wiring / piping material to move in the axial direction with respect to the heat-expandable refractory, is formed on the outer surface of the wiring / piping material. Provided without being glued
The closing member is adhered to the inner surface of the heat-expandable refractory.

The fire-resistant structure of the penetrating portion according to the embodiment of the present invention is the fire-resistant structure of the penetrating portion, wherein the closing member is between the mounting member and the outer surface of the mounting member and the inner surface of the heat-expandable fireproof tool. The gist is that it consists of a filler to be filled.

According to the present invention, even if a force for moving the wiring / piping material in the axial direction is applied, it is possible to prevent the heat-expandable refractory from coming off from the fire protection compartment, and the through hole becomes a smoke path. Can be prevented.

FIG. 2 is a cross-sectional view showing a fireproof structure of a penetrating portion of the embodiment. The perspective view which shows the thermal expansion refractory of embodiment. (A) is a front view showing a heat-expandable refractory, and (b) is a sectional view taken along line AA of FIG. 3 (a). (A) is a diagram showing a state in which an electric wire pipe is penetrated through a through hole of a fireproof partition wall, (b) is a diagram before attaching a heat-expandable refractory to the electric wire pipe, and (c) is a diagram showing a heat-expandable refractory. The figure which shows the state which inserted into the through hole. The figure which shows the gap between a heat-expandable refractory and an electric wire tube. The cross-sectional view which shows the action of the fireproof structure of the penetration part. FIG. 5 is a cross-sectional view showing another example of a fireproof structure of a penetrating portion. FIG. 5 is a cross-sectional view showing another example of a fireproof structure of a penetrating portion.

Hereinafter, an embodiment of a fireproof structure of a penetrating portion embodying the present invention will be described with reference to FIGS. 1 to 5.
First, the fire protection compartment wall W as the fire protection compartment will be described.

As shown in FIG. 1, the fireproof partition wall W is a concrete wall, and the conduit P made of synthetic resin as a wiring / piping material is penetrated through the fireproof partition wall W in the thickness direction of the fireproof partition wall W. A circular through hole Wa is formed. Then, in the present embodiment, a penetration portion is formed in the fire protection partition wall W by the through hole Wa itself.

Next, in order to form the fireproof structure of the penetrating portion in the fireproof compartment wall W, the heat-expandable refractory tool 11 which is attached to the through hole Wa and fixed to the fireproof compartment wall W will be described.
As shown in FIG. 2, the heat-expandable refractory tool 11 is formed in a cylindrical shape by a heat-expandable rubber as a heat-expandable material. The heat-expandable refractory tool 11 is formed of a bottomed cylindrical refractory body 12 and a flange portion 13 formed at one end of the refractory body 12 in the axial direction.

As shown in FIGS. 1 and 3B, the outer diameter of the refractory body 12 is constant in the axial direction of the refractory body 12 and is formed to be slightly larger than the diameter of the through hole Wa. Further, in the heat-expandable rubber, an expansion material (expanded graphite) whose volume expands more than twice as much as before heating when it receives heat of 300 ° C. or higher is mixed with the rubber, and this rubber is molded into a predetermined shape (molding step). It is made by undergoing a vulcanization process. The vulcanization step is a step of applying heat to the rubber that has undergone the molding step to cause a vulcanization (crosslinking) reaction or an adhesion reaction to obtain a product having rubber elasticity. The heat-expandable refractory tool 11 maintains a cylindrical shape (shape) by the heat-expandable rubber itself.

As shown in FIGS. 3A and 3B, at one end of the refractory body 12 in the axial direction, the flange portion 13 projects outward over the entire circumference of the refractory body 12 in the circumferential direction. Is formed in. Further, a receiving portion 16 is formed on the other end (bottom side) side of the refractory main body 12 in the axial direction. A filling space K is formed in the refractory main body 12, and the filling space K is opened at one end in the axial direction of the refractory main body 12 and closed by the receiving portion 16 at the other end in the axial direction. The filling space K is formed in a circular hole shape, and is formed by reducing the diameter of the refractory body 12 so as to gradually taper from one end to the other end in the axial direction. Since the outer diameter of the refractory body 12 is constant along the axial direction, the thickness of the peripheral wall portion 12a of the refractory body 12 gradually increases from one end to the other end in the axial direction of the refractory body 12. It is formed so as to be thicker toward the receiving portion 16 side.

The receiving portion 16 has a thin plate shape integrally formed on the inner peripheral surface of the refractory main body 12. A plurality of dividing grooves 16a are formed in the receiving portion 16 at equal intervals in the circumferential direction of the receiving portion 16 and are formed so as to extend in the radial direction of the receiving portion 16. In the receiving portion 16, the portion where the dividing groove 16a is formed is thinner than the other portions. An insertion hole 16b is formed at a position where all the dividing grooves 16a intersect in the central portion of the receiving portion 16 so as to penetrate the receiving portion 16 in the thickness direction. Further, each dividing groove 16a is cut to the entire thickness of the receiving portion 16 so that the central portion of the receiving portion 16 communicates with the insertion hole 16b.

As shown in FIGS. 4C and 5, when the conduit P is inserted into the insertion hole 16b in the receiving portion 16, the receiving portion 16 is separated from the insertion hole 16b side of the dividing groove 16a. As a result, the receiving portion 16 is divided into a fan shape by the plurality of dividing grooves 16a to form a plurality of tongue pieces 16c. Each tongue piece 16c has rubber elasticity, and is deformable from the base end side of the tongue piece 16c toward the filling space K or the side away from the refractory body 12. In FIG. 1, since the heat-expandable fireproof tool 11 is moved along the electric wire pipe P with the electric wire pipe P penetrating the receiving portion 16, the tongue piece 16c is directed into the filling space K with the base end side as the base point. The tongue piece 16c is in close contact with the outer peripheral surface of the conduit P. Further, in the filling space K, an annular gap Ka is partitioned between the inner peripheral surface of the refractory main body 12 and the outer peripheral surface of the conduit P.

Further, as shown in FIGS. 2 and 3A, the refractory main body 12 and the flange portion 13 are formed with slits 14 extending in the entire axial direction of the refractory main body 12. The slit 14 connects the outer surface side of the refractory main body 12 and the outer peripheral end of the flange portion 13 so as to communicate with the filling space K, so that the filling space K can be opened to the outside of the refractory main body 12. The slit 14 is one of the plurality of dividing grooves 16a and is used for forming the tongue piece 16c.

Next, the fireproof structure of the penetrating portion will be described.
As shown in FIG. 1, a heat-expandable refractory tool 11 is fixed to the fire-prevention partition wall W. Specifically, the refractory body 12 of the heat-expandable refractory tool 11 is inserted into the through hole Wa of the fireproof partition wall W, and the flange portion 13 is in contact with the opening edge of the through hole Wa. It is locked. The flange portion 13 and the opening edge portion of the fireproof compartment wall W are fixed by an adhesive tape or an adhesive, and the heat-expandable refractory tool 11 is immovably fixed to the fireproof compartment wall W. To install the heat-expandable refractory tool 11 on the fire-retardant partition wall W, a flame-retardant putty is applied from the surface of the flange portion 13 to the surface of the fire-retardant compartment wall W, and the flange portion 13 is embedded in the putty to heat. This may be done by fixing the inflatable refractory tool 11 to the fireproof partition wall W.

The outer peripheral surface of the refractory main body 12 is in pressure contact with the inner peripheral surface of the through hole Wa. Therefore, when the outer peripheral surface of the refractory main body 12 is pressed against the inner peripheral surface of the through hole Wa, there is no gap between the outer peripheral surface of the refractory main body 12 and the inner peripheral surface of the through hole Wa, and the refractory main body 12 Functions as a sealing member.

The electric wire pipe P is inserted into the refractory main body 12, and the electric wire pipe P penetrates the fireproof partition wall W in the thickness direction. The heat-expandable refractory tool 11 surrounds the electric wire tube P with a gap Ka from the outer peripheral surface over the entire circumferential direction. Further, the plurality of tongue pieces 16c of the heat-expandable refractory tool 11 are deformed so as to project toward the filling space K along the electric wire pipe P. Behind the through hole Wa, the filling space K is closed by a receiving portion 16 composed of a plurality of tongue pieces 16c.

The filling space K (gap Ka) is filled with an annular filler 21 made of a foamable material (for example, sponge) as a closing member, and the gap Ka is closed by the filler 21. The filler 21 is pushed into the gap Ka in a state where the inner and outer diameters are reduced, that is, in a compressed state. The inner peripheral surface of the filler 21 is in close contact with the outer peripheral surface of the conduit P, and the outer peripheral surface is in close contact with the inner peripheral surface of the refractory main body 12. The filler 21 is not filled in the gap Ka until the tongue piece 16c is pushed away and reaches the depth of the through hole Wa, and the tongue piece 16c prevents the tongue piece 16c from jumping out of the refractory main body 12.

Further, the slit 14 of the refractory body 12 is also closed by the filler 21 from the inner peripheral surface side of the refractory body 12. Therefore, the gap Ka between the outer peripheral surface of the conduit P and the inner peripheral surface of the heat-expandable refractory tool 11 is closed by the filler 21. Further, although the filler 21 is filled in the gap Ka between the outer peripheral surface of the conduit P and the inner peripheral surface of the thermal expansion refractory 11, the outer peripheral surface of the conduit P and the thermal expansion refractory 11 Not adhered to the inner peripheral surface. Therefore, the conduit P is inserted into the through hole Wa in a state of being relatively movable with respect to the filler 21 and the heat-expandable refractory tool 11. Further, since the filler 21 is made of a foamable material, it can be expanded and contracted in the radial direction of the through hole Wa.

Next, the action of the fireproof structure of the penetrating portion will be described.
By the way, in the fireproof structure of the penetrating portion, the electric wire tube P is not fixed to the heat-expandable refractory tool 11 and the filler 21. Therefore, as shown by the arrow Y in FIG. 6, the conduit P is supported so as to be relatively movable with respect to the heat-expandable refractory tool 11. Therefore, when a force for moving the conduit P in the axial direction is applied, the conduit P moves in the axial direction while being in sliding contact with the filler 21 and the tongue piece 16c. At this time, the heat-expandable refractory 11 is formed of the heat-expandable rubber, and the electric conduit P is formed of the synthetic resin. 11 has a larger coefficient of friction. Therefore, even if the conduit P moves in the axial direction, the filler 21 is difficult to move with respect to the inner peripheral surface of the heat-expandable refractory tool 11. Therefore, since the heat-expandable refractory tool 11 is fixed to the fire-prevention partition wall W, the filler 21 and the heat-expandable refractory tool 11 remain located in the through hole Wa while the conduit P moves in the axial direction. It becomes. As a result, the filler 21 and the heat-expandable refractory tool 11 are prevented from coming off from the through hole Wa. That is, even if the conduit P moves, the fireproof structure is maintained in a state of being installed on the fireproof partition wall W.

When a fire or the like occurs on one wall surface side (the side where the flange portion 13 is exposed) of the fire protection compartment wall W, smoke is generated by burning the conduit P and other objects. At this time, the through hole Wa is closed by pressure welding of the refractory main body 12 to the inner surface of the through hole Wa (sealing function of the refractory main body 12) and filling the gap Ka with the filler 21, so that the through hole Wa is closed. It is prevented from becoming a smoke path, and the inconvenience of smoke being transmitted to the other wall surface side of the fireproof partition wall W is eliminated.

Further, the conduit P and the filler 21 are burned, the filler 21 is burnt down, and the flange portion 13 and the exposed surface side of the refractory main body 12 are heated by the heat generated by a fire or the like. Then, a gap is formed around the electric wire pipe P due to the burning of the filler 21, and this gap becomes a heat propagation space, and the fireproof main body 12 is moved to the inner peripheral surface side (electric wire pipe P) by the heat propagating in the gap. Inflated from the side). As a result, the refractory main body 12 expands from the inner peripheral surface side, and the flange portion 13 also expands.

The refractory main body 12 expands in the radial direction and the axial direction of the through hole Wa, and while filling the gap formed by the burning of the filler 21, the through hole Wa is sealed and closed while crushing the conduit P. As a result, the path between the outer peripheral surface of the conduit P and the inner peripheral surface of the through hole Wa becomes a path for heat and smoke, and there is no inconvenience that heat and smoke are transmitted to the other wall surface side of the fire protection partition wall W.

On the other hand, when a fire or the like occurs on the other wall surface side of the fire protection partition wall W (the side where the through hole Wa is opened), smoke is generated by burning the conduit P and other objects. At this time, the through hole Wa is closed by pressure welding of the refractory body 12 to the through hole Wa (sealing function of the refractory body 12), filling of the filler 21 in the gap Ka, and the receiving portion 16. The through hole Wa is prevented from becoming a smoke path, and the inconvenience of smoke being transmitted to the other wall surface side of the fireproof partition wall W is eliminated.

Further, as the conduit P burns, flames and smoke invade the through hole Wa. Then, the receiving portion 16 side of the refractory main body 12 is heated by the heat generated by fire or the like. The refractory main body 12 is heated from the inner peripheral surface side by the heat from the burning electric wire tube P.

Then, the receiving portion 16 side of the heated refractory main body 12 expands in the radial direction and the axial direction of the through hole Wa, and the through hole Wa is sealed and closed while crushing the conduit P. As a result, the path between the outer peripheral surface of the conduit P and the inner peripheral surface of the through hole Wa becomes a path for heat and smoke, and there is no inconvenience that heat and smoke are transmitted to the other wall surface side of the fire protection partition wall W.

Next, a method of providing a fireproof structure on the fireproof partition wall W by using the heat-expandable fireproof tool 11 and the filler 21 will be described.
First, as shown in FIG. 4A, the electric wire pipe P is inserted into the through hole Wa, and the electric wire pipe P is passed through the fireproof partition wall W. Next, as shown in FIG. 4B, the heat-expandable refractory tool 11 is expanded from the slit 14 in the heat-expandable refractory tool 11, and the filling space K is opened over the entire axial direction of the refractory body 12. Let me. Then, as shown by the alternate long and short dash line in FIG. 4C, the electric wire tube P is housed in the slit 14 and the refractory main body 12 is closed. Then, the heat-expandable refractory tool 11 is attached to the outer surface side of the electric wire tube P.

Subsequently, the heat-expandable refractory tool 11 is slid and moved toward the through hole Wa along the axial direction of the conduit P, and as shown by the solid line in FIG. 4 (c), the fire resistance in the heat-expandable refractory tool 11 Insert the tool body 12 side into the through hole Wa. Here, the outer diameter of the refractory body 12 is formed to be slightly larger than the diameter of the through hole Wa, and the refractory body 12 is made of heat-expandable rubber and therefore has rubber elasticity. Therefore, when the refractory body 12 is inserted into the through hole Wa, the outer peripheral surface of the refractory body 12 is pressed by the inner peripheral surface of the through hole Wa to be compressed and deformed, and the through hole Wa is restored to its original shape. The outer peripheral surface of the refractory body 12 is in pressure contact with the inner peripheral surface. Therefore, when the outer peripheral surface of the refractory body 12 is pressed against the inner surface of the through hole Wa, there is no gap between the outer peripheral surface of the refractory body 12 and the inner peripheral surface of the through hole Wa, and the refractory body 12 is sealed. Functions as a member.

Further, when the flange portion 13 is brought into contact with the opening edge of the through hole Wa in the fireproof partition wall W and locked, further entry of the heat-expandable refractory tool 11 into the through hole Wa is prevented. Then, when the flange portion 13 and the opening edge portion of the fireproof compartment wall W are adhered with an adhesive tape or an adhesive, the heat-expandable refractory tool 11 is installed on the fireproof compartment wall W.

Further, when the heat-expandable refractory 11 is installed by sliding the heat-expandable refractory 11 along the conduit P as described above, the plurality of tongue pieces 16c enter the filling space K along the conduit P. It deforms so that it protrudes toward it. Then, as shown in FIG. 1, the filling space K (gap Ka) of the heat-expandable refractory tool 11 opens outward from the opening end side, and at the back of the through hole Wa, a plurality of tongue pieces 16c. The filling space K is closed by the receiving portion 16.

Then, the filler 21 is filled in the gap Ka from the opening on one end side in the axial direction of the refractory main body 12, and the filling space K is closed. As a result, the heat-expandable refractory tool 11 is disposed between the inner peripheral surface of the through hole Wa and the outer peripheral surface of the electric wire tube P, and the inner peripheral surface of the refractory body 12 and the outer peripheral surface of the electric wire tube P. The filler 21 is arranged in the gap Ka of the above without any gap. Then, the electric wire pipe P is arranged so as to penetrate the fireproof partition wall W, and the fireproof partition wall W is provided with a fireproof structure.

According to the above embodiment, the following effects can be obtained.
(1) In the fire-resistant structure of the penetrating portion, while filling the gap Ka between the inner peripheral surface of the heat-expandable fire-resistant tool 11 and the outer peripheral surface of the electric conduit P with the filler 21, the electric wire is connected to the heat-expandable fire-resistant tool 11. The pipe P can be moved in the axial direction (thickness direction of the fireproof partition wall W). Therefore, even if a force for moving the electric wire tube P in the axial direction is applied, only the electric wire tube P moves in the through hole Wa, and the heat-expandable refractory tool 11 can be maintained in the state of being installed in the through hole Wa. can. Therefore, even if a fire or the like occurs after the conduit P has moved, it is possible to prevent the through hole Wa from becoming a smoke path. Further, the heat-expandable refractory tool 11 expands due to the heat of a fire or the like, and the through hole Wa can be quickly closed.

(2) A sponge, which is a foamable material, was used as the filler 21, and the filler 21 was filled in the filling space K in a compressed state. The sponge has a small force to return to elasticity even when compressed, and is not in strong contact with the outer peripheral surface of the conduit P. Therefore, even if the conduit P moves in the axial direction, the filler 21 is less likely to be dragged by the conduit P, and the filler 21 can be left in the gap Ka. Further, since the heat-expandable refractory tool 11 is a heat-expandable rubber, the coefficient of friction is larger than that of the synthetic resin which is the material of the conduit P. Therefore, even if the conduit P moves in the axial direction, the filler 21 is difficult to move with respect to the heat-expandable refractory tool 11, and the filler 21 can be left in the gap Ka.

(3) A sponge, which is a foamable material, was used as the filler 21. Therefore, even if a force for moving the conduit P in the radial direction acts, the filler 21 is compressed and deformed to allow the conduit P to move in the radial direction, and the fireproof structure is damaged. Can be prevented.

(4) The refractory main body 12 is made of heat-expandable rubber and has rubber elasticity. Further, the outer diameter of the refractory main body 12 is formed to be slightly larger than the diameter of the through hole Wa. Therefore, when the refractory body 12 is inserted into the through hole Wa, the refractory body 12 is slightly compressed and deformed by the inner peripheral surface of the through hole Wa, and returns to the original shape to form the inner peripheral surface of the through hole Wa. The outer peripheral surface of the refractory body 12 is pressed against each other. Therefore, even if a force for moving the electric wire tube P in the axial direction is applied, it is possible to prevent the heat-expandable refractory tool 11 from coming out of the through hole Wa.

(5) In the heat-expandable refractory tool 11, the receiving portion 16 in close contact with the outer peripheral surface of the electric wire tube P is formed of a plurality of tongue pieces 16c separated from the dividing groove 16a. Then, when a force for moving the electric wire tube P in the axial direction is applied, the plurality of tongue pieces 16c are deformed along the outer peripheral surface of the electric wire tube P. Therefore, unlike the case where the receiving portion 16 is formed so as not to be deformable, the tongue piece 16c does not hinder the movement of the conduit P, and the receiving portion 16 is not dragged by the conduit P, so that heat is generated. The inflatable refractory tool 11 can be left in the through hole Wa.

The above embodiment may be changed as follows.
○ In the embodiment, the filler 21 made of a foam material (made of sponge) is used as the closing member, but the closing member may be changed.

As shown in FIG. 7, the closing member is filled between the annular mounting member 31 mounted on the outer peripheral surface of the conduit P, the outer peripheral surface of the mounting member 31, and the inner peripheral surface of the fireproof body 12. It may be composed of a fireproof putty 32 as a filler to be formed. The refractory putty 32 does not have thermal expansion property and has fire resistance. Further, the mounting member 31 is formed of, for example, non-adhesive paper or a resin sheet, and the mounting member 31 is provided so as to be slidable in the axial direction with respect to the conduit P when mounted on the conduit P. .. Further, the refractory putty 32 is adhered to the inner peripheral surface of the refractory main body 12 and the outer peripheral surface of the mounting member 31. Therefore, the heat-expandable refractory tool 11, the mounting member 31, and the refractory putty 32 are integrated by the adhesiveness of the refractory putty 32.

In this configuration, the conduit P is inserted into the heat-expandable refractory tool 11 in a state where it can move relative to the mounting member 31 in the axial direction. Therefore, even if a force for moving the electric wire tube P in the axial direction acts, only the electric wire tube P moves, and the fireproof putty 32 and the heat-expandable refractory tool 11 can be maintained in the state of being installed in the through hole Wa. .. Therefore, even if a fire or the like occurs after the conduit P has moved, the through hole Wa can be quickly closed by the expansion of the heat-expandable refractory tool 11.

Further, even if an adhesive material such as the refractory putty 32 is used as the filler, the conduit P moves in the axial direction only by interposing the mounting member 31 between the refractory putty 32 and the conduit P. Even so, the refractory putty 32 and the heat-expandable refractory tool 11 can be left in the through hole Wa.

○ In the form shown in FIG. 7, a fire-resistant putty 32 is filled between the mounting member 31 and the inner peripheral surface of the heat-expandable fire-resistant tool 11, and the fire-resistant putty 32 is used as the inner peripheral surface of the fire-resistant main body 12 and the mounting member. It was adhered to the outer peripheral surface of 31. However, the filler (refractory putty 32) filled between the mounting member 31 and the heat-expandable refractory tool 11 does not have to have adhesiveness.

Further, a fire-resistant putty 32 having no thermal expansion property is filled between the mounting member 31 and the inner peripheral surface of the heat-expandable refractory tool 11, but the fire-resistant putty 32 has thermal expansion property instead of the fire-resistant putty 32. The putty may be filled. This heat-expandable putty may or may not have adhesiveness.

○ In the form shown in FIG. 7, the mounting member 31 and the fireproof putty 32 are provided as closing members between the inner peripheral surface of the heat-expandable refractory tool 11 and the outer peripheral surface of the conduit P. Only the mounting member 31 may be provided as a closing member between the inner peripheral surface of the tool 11 and the conduit P. In this case, a heat-expandable material is provided on the inner peripheral surface of the heat-expandable refractory tool 11 separately from the fire-resistant main body 12, and this heat-expandable material is regarded as a part of the heat-expandable refractory tool 11, and the mounting member 31 Only is regarded as a closing member.

○ A heat-expandable putty is provided on the inner peripheral surface of the cylindrical refractory rubber, and the heat-expandable putty constitutes a heat-expandable refractory tool. That is, the one that thermally expands on the outer peripheral side of the conduit P is regarded as a thermally expandable refractory tool. Then, a gap may be provided between the inner peripheral surface of the heat-expandable putty in the heat-expandable refractory and the outer peripheral surface of the conduit P, and a mounting member may be provided in this gap. In this case, the mounting member itself becomes the closing member. With this configuration, in the event of a fire, the heat-expandable putty expands toward the conduit P. Therefore, even if a gap is formed in the portion where the conduit P is arranged in the heat-expandable refractory due to the burning of the conduit P, the gap is compressed while the mounting member is compressed by the expanding heat-expandable putty. Can be pushed into. As a result, it is possible to prevent the formation of voids inside the refractory rubber and prevent the through hole Wa from becoming a path for smoke and flame.

○ A receiver (for example, made of synthetic resin) formed in a bottomed tubular shape for receiving a heat-expandable material (for example, a heat-expandable putty) is fixed in the through hole Wa, and an electric wire is formed in the receiver. Insert the tube P. Then, the heat-expandable material is filled between the inner peripheral surface of the receiver and the outer peripheral surface of the conduit P, and the heat-expandable material is received by the receiver. Further, an annular mounting member is arranged between the inner peripheral surface of the heat-expandable material and the outer peripheral surface of the conduit P to allow the conduit P to move in the axial direction to form a fireproof structure of the penetrating portion. In this case, the heat-expandable material constitutes the heat-expandable refractory, and the mounting member itself becomes the closing member.

○ In the embodiment, the filler 21 is embodied in a sponge as a foamable material, but the filler 21 is not used as long as it does not have adhesiveness and can prevent smoke from leaking from the filling space K. It may be an effervescent material. For example, cloth or the like may be used as the filler 21.

○ In the embodiment, the filler 21 is configured not to adhere to the outer peripheral surface of the conduit P and the inner peripheral surface of the thermal expansion refractory 11, but the filler 21 is attached to the inner peripheral surface of the thermal expansion refractory 11. On the other hand, it may be adhered.

○ As shown in FIG. 8, as a fireproof partition body, in a hollow hollow wall 72 in which a hollow portion 71 is partitioned between a pair of wall materials 70, a through hole 70a is formed in one of the wall materials 70, and the through hole 70a is formed therein. A refractory structure may be formed by mounting the heat-expandable refractory tool 11 in the through hole 70a. Alternatively, the heat-expandable refractory tool 11 may be attached to the through holes 70a of both wall materials 70 to form a refractory structure.

○ As a fireproof compartment, a through hole is formed in a hollow hollow wall in which a hollow portion is partitioned between a pair of wall materials, a sleeve is arranged in the through hole, and a through portion is formed by the sleeve. You may. Then, the heat-expandable refractory tool 11 and the filler 21 may be mounted in the sleeve to form a refractory structure.

○ In the fire protection partition wall W of the embodiment, a sleeve may be arranged in the through hole Wa, and the through portion may be formed by the sleeve. Then, the heat-expandable refractory tool 11 and the filler 21 may be provided in the sleeve to form a refractory structure.

○ When a fireproof structure is formed on a clay wall or the like other than a concrete wall as a solid fireproof compartment, the fireproof structure of the present invention may be used.
○ In the embodiment, the heat-expandable refractory tool 11 may be attached to both opening sides of the through hole Wa.

○ A heat-expandable refractory tool 11 and a refractory body 12 may be provided in a through hole penetrating the floor as a fire-prevention compartment in the thickness direction, and a refractory structure may be provided on the floor.
○ In the embodiment, the filler 21 may be adhered to the inner peripheral surface of the refractory main body 12 with an adhesive, or may be bonded to the flange portion 13 with an adhesive tape or the like.

○ In the embodiment, the through hole Wa is formed into a circular hole shape, but it may be formed into a square hole shape, a hexagonal hole shape, or an elliptical hole shape.
○ In the embodiment, the refractory body 12 is made of heat-expandable rubber, and the outer diameter of the refractory body 12 is slightly larger than the diameter of the through hole Wa, but the outer diameter of the refractory body 12 is the through hole Wa. It may be formed slightly smaller than the diameter of. In this case, the refractory main body 12 may be fixed to the fireproof partition wall W with screws or bolts penetrating the flange portion 13, or the adhesive tape bonded to the flange portion 13 is joined to the fireproof compartment wall W. It may be fixed to the fire protection compartment wall W.

○ The wiring / piping material may be wiring or a pipe material other than the conduit P, or both wiring and piping material. Further, as the wiring / piping material, a plurality of wiring / piping materials may be put together.

Next, the technical idea that can be grasped from the above embodiment and another example will be added below.
(A) The fireproof structure of the penetrating portion according to claim 4 or 5, wherein the mounting member is made of paper.

Ka ... Gap, P ... Conduit as a piping material, W, 70 ... Fireproof partition wall as a fireproof compartment, Wa, 70a ... Through hole as a penetration, 11 ... Thermal expansion fireproof, 21 ... Filler, 31 ... Mounting member.

Claims (8)

Wiring / piping material is inserted through a penetrating portion formed by penetrating the fireproof compartment of a building in the thickness direction, and heat expands due to heat between the inner surface of the penetrating portion and the outer surface of the wiring / piping material. It is a fireproof structure of the penetration part provided with an inflatable fireproof tool.
The heat-expandable refractory has an elastic refractory body formed in a tubular shape and having a heat-expandable material on the inner surface, and is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material. And fixed to the fire protection compartment
In the gap, a compressible closing member that fills the gap and closes the gap while allowing the wiring / piping material to move in the axial direction with respect to the heat-expandable fireproof tool is the wiring / piping. It is provided without being adhered to the outer surface of the material, and in a state where the closing member is compression-deformed, it comes into close contact with the outer surface of the wiring / piping material, and is burnt down by heat when the wiring / piping material is burned, resulting in thermal expansion. A fireproof structure of a penetrating portion, characterized in that the material is arranged so as to expand toward the wiring / piping material. Wiring / piping material is inserted through a penetrating portion formed by penetrating the fireproof compartment of a building in the thickness direction, and heat expands due to heat between the inner surface of the penetrating portion and the outer surface of the wiring / piping material. It is a fireproof structure of the penetration part provided with an inflatable fireproof tool.
The heat-expandable refractory has an elastic refractory body formed in a tubular shape and having a heat-expandable material on the inner surface, and is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material. And fixed to the fire protection compartment
In the gap, a compressible closing member that fills the gap and closes the gap while allowing the wiring / piping material to move in the axial direction with respect to the heat-expandable fireproof tool is the wiring / piping. It is provided without being adhered to the outer surface of the material, and in a state where the closing member is compression-deformed, it comes into close contact with the outer surface of the wiring / piping material, and is burnt down by heat when the wiring / piping material is burned, resulting in thermal expansion. Arranged so that the sex material expands toward the wiring / piping material,
A refractory structure of a penetrating portion, wherein the closing member is adhered to the refractory body. The fireproof structure of a penetrating portion according to claim 1 or 2, wherein the closing member is a filler formed of a material having no adhesiveness to the wiring / piping material. The fireproof structure of a penetrating portion according to any one of claims 1 to 3, wherein the outer peripheral surface of the refractory main body is pressed by the inner surface of the penetrating portion and is compressed and deformed. The fireproof structure of a penetrating portion according to any one of claims 1 to 4, wherein the closing member is made of a non-thermally expandable foamable material. Wiring / piping material is inserted into a penetrating portion formed by penetrating the fireproof compartment of a building in the thickness direction, and is provided between the inner surface of the penetrating portion and the outer surface of the wiring / piping material, and expands due to heat. It is a heat-expandable refractory
The heat-expandable refractory has an elastic refractory body formed in a tubular shape and having a heat-expandable material on the inner surface, and is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material. It is configured to be fixed to the fire protection compartment.
In the gap, a compressible closing member that fills the gap and closes the gap while allowing the wiring / piping material to move in the axial direction with respect to the fireproof main body is the wiring / piping material. The closing member is provided without being adhered to the outer surface, and the closing member is in close contact with the outer surface of the wiring / piping material and is burnt down by heat when the wiring / piping material is burned. A heat-expandable fireproof device characterized in that it is configured to expand toward a piping material. Wiring / piping material is inserted into a penetrating portion formed by penetrating the fireproof compartment of a building in the thickness direction, and is provided between the inner surface of the penetrating portion and the outer surface of the wiring / piping material, and expands due to heat. It is a heat-expandable refractory
The heat-expandable refractory has an elastic refractory body formed in a tubular shape and having a heat-expandable material on the inner surface, and is arranged so as to surround the outer surface with a gap from the outer surface of the wiring / piping material. It is configured to be fixed to the fire protection compartment.
In the gap, a compressible closing member that fills the gap and closes the gap while allowing the wiring / piping material to move in the axial direction with respect to the heat-expandable fireproof tool is the wiring / piping. The closing member is provided without being adhered to the outer surface of the material, and the closing member is in close contact with the outer surface of the wiring / piping material and is burnt down by heat when the wiring / piping material is burned. It is configured to expand toward wiring and piping materials,
A heat-expandable refractory whose closing member is adhered to the refractory body. The heat-expandable refractory according to claim 6 or 7, wherein the closing member is made of a non-heat-expandable foamable material.

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