JP6946212B2 - Penetration structure of fire protection structure and mounting method of fire protection member - Google Patents

Description

According to the present invention, a penetrating structure and a fireproof member of a fireproof structure configured by attaching a fireproof member to a portion where a metal fluid tube covered with a heat insulating material made of an independent foam material penetrates a through hole of the fireproof structure. Regarding the mounting method of.

Generally, the refrigerant pipe (fluid pipe) for supplying the refrigerant to a large refrigerator is made of metal and is covered with a heat insulating material to be insulated from the outside air. In order to allow the refrigerant pipe covered with the heat insulating material to penetrate a fireproof structure such as a floor, the fireproof structure is formed with a through hole penetrating the fireproof structure in the thickness direction. In the fire protection structure, the gap between the through hole and the heat insulating material covering the fluid pipe serves as an intrusion route for flames, smoke, and toxic gas generated on one side of the fire protection structure to the other side. A structure is provided to prevent this.

Examples of the structure of such a fire protection structure include the fire protection measures structure disclosed in Patent Document 1. The fire protection structure of Patent Document 1 includes a heat-expandable fireproof sheet material wound around the outer surface of a plurality of long bodies (fluid tubes) penetrating through holes. The heat-expandable refractory sheet material includes a heat-expandable refractory material layer and an adhesive layer. The heat-expandable refractory sheet material is wound around a long body and is adhesively held by an adhesive layer along the outer surface shape of the plurality of long bodies.

When a fire or the like occurs on one side of the fire protection structure, the covering material (insulation material) constituting the long body is melted and burned by heat, and a space is created between the through hole and the long body. Even in this case, the heat-expandable fire-resistant material layer thermally expands due to the heat of a fire or the like, fills the space created by the melting and combustion of the covering material, and suppresses the spread of the fire.

JP-A-2017-75643

However, in most cases, the thickness of the covering material is different depending on the place where the fire protection structure is provided, and if the thickness of the covering material is different, the amount of expansion is also different. For this reason, the type of heat-expandable refractory material layer is selected and the heat-expandable refractory material layer is selected so that the space created by the melting and combustion of the coating material can be filled in each place where the fire protection structure is provided. It was necessary to adjust the heat-expandable refractory layer, such as changing the thickness (amount).

An object of the present invention is to provide a penetrating structure of a fireproof structure and a method of attaching a fireproof member capable of suppressing the spread of fire without requiring adjustment of a heat-expandable fireproof material layer.

In the through structure of the fireproof structure for solving the above problems, a fireproof member is attached to a place where a metal fluid pipe covered with a heat insulating material made of an independent foam material penetrates the through hole of the fireproof structure. It is a penetrating structure of the constructed refractory structure, and the refractory member has a base material made of a strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material. The refractory member is attached to the outside of the heat insulating material by winding it around the heat insulating material so as to sandwich the heat-expandable refractory material layer between the base material and the heat insulating material, and the attached refractory member is attached. Part of the through hole, and the other part protrudes from the fireproof structure, and the inner surface of the through hole, the heat insulating material located in the through hole, and the refractory member that has entered the through hole. The space between the outer surface and a part of the outer surface is filled with a filler, and the maximum expansion thickness of the heat-expandable refractory layer from the base material when thermally expanded is smaller than the thickness of the heat insulating material. Is the gist.

Further, regarding the through structure of the fireproof structure, if the fireproof member attached to the outside of the heat insulating material is used as the attached fireproof member in a state where a part of the through hole is inserted, the outside of the heat insulating material may be formed. Another refractory member may be attached in a wound state so as to overlap a part of the attached refractory member.

Further, regarding the penetrating structure of the fireproof structure, the other fireproof member may be polymerized on the outside of a part of the attached fireproof member.
Further, regarding the penetrating structure of the fireproof structure, the fireproof member has an extra length in which the heat-expandable fireproof material layer does not exist along one of the edges of the pair of edges extending in the longitudinal direction of the base material. The attached refractory member is attached to the heat insulating material so that the extra length portion is located farther from the fireproof structure than the other edge portion of the base material. The refractory member may be attached to the heat insulating material in a state in which the heat-expandable refractory material layer overlaps with the extra length portion of the attached refractory member.

Further, regarding the penetrating structure of the fireproof structure, the fireproof members adjacent to each other in the axial direction of the fluid pipe may have the heat-expandable fireproof material layers in close contact with each other or in close proximity to each other in the axial direction.
Further, regarding the penetrating structure of the fireproof structure, the fireproof member has a mating portion in which the ends located at both ends in the longitudinal direction are abutted against each other or overlapped with each other, and the fireproof member is adjacent to each other in the axial direction of the fluid pipe. The positions of the mating portions may be displaced from each other in the circumferential direction of the fluid pipe.

Further, regarding the penetrating structure of the fireproof structure, the fireproof member is spirally wound around the outside of the heat insulating material so that the heat-expandable fireproof material layer is sandwiched between the base material and the heat insulating material. A part of the refractory member adjacent to the fluid pipe in the axial direction may be in a superposed state.

The method of attaching the refractory member to solve the above problem is to attach the refractory member to the place where the metal fluid pipe covered with the heat insulating material made of independent foam material penetrates the through hole of the fireproof structure. In the mounting method, the refractory member has a base material made of a strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material, and the refractory member is attached to the base material. And the heat insulating material are wound around the heat insulating material so as to sandwich the heat-expandable refractory layer, and in the wound state, the ends located at both ends of the fireproof member in the longitudinal direction are connected to each other. The refractory member is abutted or overlapped, and with a part of the refractory member inserted into the through hole, the refractory member is tightened by a band-shaped or string-shaped tightening member so as to surround the refractory member from the outside to heat the refractory member. It is attached to the outside of the material so that it is already attached, and another refractory member is wound around the heat insulating material so as to overlap a part of the protruding portion from the fireproof structure in the attached refractory member. The step of attaching the other refractory member to the outside of the heat insulating material by tightening the other refractory member so as to surround the other refractory member from the outside by another fastening member, or superimposing another refractory member on the other refractory member. The gist is that the process of attaching to the outside of the heat insulating material is performed once or multiple times.

Regarding the method of attaching the refractory member, the refractory member has an extra length portion in which the heat-expandable refractory material layer does not exist along one edge portion of a pair of edge portions extending in the longitudinal direction of the base material. The refractory members adjacent to each other in the axial direction of the fluid pipe are wound around the outside of the extra length portion so that the heat-expandable refractory material layer of the refractory member and the base material overlap with each other. Then, the extra length portion of the refractory member attached to the outside of the heat insulating material at the position farthest from the fireproof structure along the axial direction of the fluid pipe is provided with a band-shaped or string-shaped auxiliary tightening member. It may be tightened.

The method of attaching the refractory member to solve the above problem is to attach the refractory member to the place where the metal fluid pipe covered with the heat insulating material made of independent foam material penetrates the through hole of the fireproof structure. In the mounting method, the refractory member has a base material made of a long strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material. The base material and the heat insulating material are spirally wound so as to sandwich the heat-expandable refractory layer, and a part of the fireproof members adjacent to each other in the axial direction of the fluid pipe is overlapped with each other to superimpose the heat insulating material. With a part of the refractory member attached to the outside and wound spirally into the through hole, the refractory member is tightened by a band-shaped or string-shaped tightening member so as to surround the refractory member from the outside. Is attached to the outside of the heat insulating material.

Further, regarding the method of attaching the refractory member, the space between the inner surface of the through hole and the heat insulating material located in the through hole and a part of the outer surface of the refractory member that has entered the through hole is filled with a filler. Is preferable.

According to the present invention, the spread of fire can be suppressed without the need for adjusting the expandable refractory material layer.

The cross-sectional view which shows the penetration structure of a fire protection structure. An enlarged cross-sectional view showing a penetrating structure of a fireproof structure. (A) is a perspective view showing the fireproof member developed, and (b) is an enlarged view showing a long edge of the heat-expandable refractory material layer. The perspective view which shows the refractory member. Sectional drawing which shows the refractory member. The perspective view which shows the state which the fluid tube and the heat insulating material are arranged in the fire protection structure. The perspective view which shows the state which the 1st refractory member was wound around the heat insulating material. The perspective view which shows the state which the 2nd refractory member was wound around the heat insulating material. An enlarged cross-sectional view showing a penetration structure at the time of a fire. An enlarged cross-sectional view showing a state in which the heat-expandable refractory material layer of the first refractory member and the heat-expandable refractory material layer of the second refractory member are brought into close contact with each other. The perspective view which shows the state in which the refractory member is spirally wound.

Hereinafter, an embodiment in which the through structure of the fireproof structure and the mounting method of the fireproof member are embodied will be described with reference to FIGS. 1 to 9.
As shown in FIG. 1 or 2, in the fireproof structure W which is a concrete floor, a circular through hole Wa is formed so as to penetrate the fireproof structure W in the vertical direction which is the thickness direction. There is. A fluid tube S formed in a cylindrical shape by metal penetrates through the through hole Wa. The refrigerant supplied to the large refrigerator is distributed in the fluid pipe S.

The fluid tube S is covered with a cylindrical heat insulating material 10. The heat insulating material 10 insulates the refrigerant in the fluid pipe S from the outside air. As the heat insulating material 10, for example, there is a material made of a special elastomer (EPDM synthetic rubber) that is lightweight and flexible. Such a heat insulating material 10 is made of an independent foaming material having a large number of independent fine bubbles, and has excellent heat insulating properties due to the closed cells. In order to suppress the deterioration of the refrigerating function of the large refrigerator, it is necessary to suppress the temperature rise of the refrigerant, and as the heat insulating material 10, a material having an enhanced heat insulating effect is used. In the heat insulating material 10 made of the independent foaming material, when the heat insulating effect is enhanced, the closed cells become finer and the structure has more bubbles.

Next, the fireproof member 11 arranged in the through hole Wa in order to form the through structure of the fireproof structure W will be described.
First, the refractory member 11 before being wound around the heat insulating material 10 will be described.

As shown in FIG. 2 or FIG. 3A, the refractory member 11 has a strip shape. The fireproof member 11 includes a strip-shaped base material 12, a rectangular heat-expandable refractory material layer 22 laminated on one surface of the base material 12, and a film 32 laminated on one surface of the heat-expandable fireproof material layer 22. Be prepared. The refractory member 11 has a three-layer structure of a base material 12, a heat-expandable refractory layer 22, and a film 32. The refractory member 11 is formed in a long strip shape and is wound up in a roll shape or stored in a folded state. After that, it is cut to the required length and used.

The base material 12 is made of a flexible non-combustible material. The base material 12 is made of a glass fiber reinforced composite material. The base material 12 is formed by compounding a matrix resin with a glass cloth formed by plain weave, twill weave, satin weave, or the like of glass fibers. Since the glass fiber is a highly nonflammable material, the base material 12 is nonflammable. Further, in the glass cloth of the base material 12, a portion where the glass fibers intersect and a portion where the glass fibers do not intersect are mixed. Therefore, the surface of the glass cloth is uneven, and the surface of the base material 12 is also uneven due to the unevenness of the glass cloth.

The base material 12 includes a pair of long base material edges 12a on a pair of edges extending in the longitudinal direction, and the pair of long base material edges 12a are parallel. The base material 12 includes a pair of base material short edges 12b that connect one ends and the other ends of the pair of base material long edges 12a. The extending direction of the long edge 12a of the base material is the longitudinal direction of the base material 12, and the extending direction of the short edge 12b of the base material is the lateral direction of the base material 12. The longitudinal direction Y1 of the base material 12 coincides with the longitudinal direction of the refractory member 11, and the lateral direction Y2 of the base material 12 coincides with the lateral direction of the refractory member 11.

The heat-expandable refractory material layer 22 is made of a heat-expandable heat-resistant putty (butyl-based rubber mixed with expanded graphite and petroleum wax). As shown in FIG. 2, the heat-expandable refractory layer 22 has adhesiveness and is provided on the base material 12 by being attached to one surface of the base material 12. The maximum expansion thickness when the heat-expandable refractory layer 22 is thermally expanded is smaller than the thickness of the heat insulating material 10 that covers the fluid tube S. As the refractory member 11, any type of fluid tube S having a different thickness or expansion coefficient of the heat insulating material 10 and having a heat-expandable refractory layer 22 having a constant thickness is attached.

The rectangular heat-expandable refractory layer 22 includes a pair of long edges 22a parallel to each other and a pair of short edges 22b connecting one ends and the other ends of the pair of long edges 22a (see FIG. 3). The pair of long edges 22a extend in the longitudinal direction Y1 of the base material 12, and the pair of short edges 22b extend in the lateral direction Y2 of the base material 12. The length of the short edge 12b of the base material in the lateral direction Y2 is longer than the length of the short edge 22b of the heat-expandable refractory layer 22 in the lateral direction Y2.

The pair of long edges 22a of the heat-expandable refractory layer 22 are inside the long edge 12a of the base material 12 along the lateral direction Y2, respectively. The fireproof member 11 includes an extra length portion 13 in a portion of the heat-expandable refractory material layer 22 that protrudes from the long edge 22a and has a longer protrusion length from the heat-expandable refractory material layer 22. Therefore, the refractory member 11 includes an extra length portion 13 along one of the long edges 12a of the pair of long edges 12a of the substrate 12. The extra length portion 13 is a portion of the base material 12 in which the heat-expandable refractory layer 22 does not exist, and is formed of the base material 12 itself.

As shown in FIG. 3B, the film 32 is attached to the heat-expandable refractory material layer 22. The film 32 includes a pair of film long edges 32a parallel to each other and a pair of film short edges 32b connecting one ends and the other ends of the pair of film long edges 32a. The length of the short edge 32b of the film in the lateral direction Y2 is longer than the length of the short edge 22b of the heat-expandable refractory layer 22 in the lateral direction Y2, and the substrate short length of the substrate 12 in the lateral direction Y2. Shorter than the length of the edge 12b.

One film long edge 32a side of the film 32 may protrude from one long edge 22a of the heat-expandable refractory layer 22, or may be flush with one long edge 22a. On the other hand, the other long edge 32a of the film is flush with the other long edge 22a of the heat-expandable refractory layer 22. The other long edge 32a of the film may protrude from the long edge 22a of the heat-expandable refractory layer 22.

On both ends of the base material 12 in the longitudinal direction Y1, the short edge 12b of the base material, the short edge 22b of the heat-expandable refractory layer 22, and the short edge 32b of the film are flush with each other. The refractory member 11 is provided with mating surfaces 17 at both ends in the longitudinal direction Y1, which are composed of surfaces in which the short edge 12b of the base material, the short edge 22b, and the short edge 32b of the film are aligned. Further, the refractory member 11 is provided with a polymerization end portion 18 including a mating surface 17 at both ends in the longitudinal direction Y1. The polymerization end portion 18 extends from the mating surface 17 to a portion slightly inside in the longitudinal direction Y1.

Further, the refractory member 11 includes a first end portion 15 on one end side in the lateral direction Y2. The first end portion 15 is an end portion where one base material long edge 12a, one long edge 22a, and one film long edge 32a are located. The refractory member 11 includes a second end portion 16 on the other end side in the lateral direction Y2. The second end portion 16 is an end portion where one of the long edges 12a of the base material is located, and is an end portion on the side of the extra length portion 13.

The length of the refractory member 11 in the longitudinal direction Y1 is the same as or slightly longer than the peripheral length of the heat insulating material 10. As shown in FIG. 4, when the refractory member 11 is wound along the peripheral surface of the heat insulating material 10, the mating surfaces 17 at both ends of the refractory member 11 in the longitudinal direction Y1 can be brought into contact with each other. Specifically, the short edges 12b of the base material located at both ends of the fireproof member 11 in the longitudinal direction Y1, the short edges 22b of the heat-expandable refractory layer 22, and the short edges 32b of the film can be brought into contact with each other. The length of the fireproof member 11 in the lateral direction Y2 is longer than the thickness of the fireproof structure W.

As shown in FIG. 5, the refractory member 11 is attached to a position where the heat insulating material 10 penetrates the through hole Wa. The fireproof member 11 is attached to the outside of the heat insulating material 10 by winding and winding the film 32 on the outside of the heat insulating material 10 so that the film 32 comes into contact with the outer peripheral surface of the heat insulating material 10. That is, the refractory member 11 is wound around the heat insulating material 10 so as to sandwich the heat-expandable refractory layer 22 between the base material 12 and the heat insulating material 10 so as to be wound and attached to the outside of the heat insulating material 10. ..

The penetrating structure of the fireproof structure W using the fireproof member 11 having the above configuration will be described.
As shown in FIGS. 1 and 2, in the present embodiment, two fireproof members 11 are attached to the outside of the heat insulating material 10 on one side (upper side) of the fireproof structure W in the thickness direction. Of the two refractory members 11, the refractory member 11 previously attached to the heat insulating material 10 is used as the first refractory member 111 as the attached refractory member, and the heat insulating material is polymerized on a part of the first refractory member 111. The refractory member 11 attached to the 10 is referred to as a second refractory member 112 as another refractory member.

As shown in FIG. 2, the first end portion 15, which is a part of the first refractory member 111, has entered the through hole Wa as an insertion portion. As a result, the first refractory member 111 is attached to the position where the fluid pipe S penetrates the through hole Wa. Further, the first fireproof member 111 is attached to the heat insulating material 10 so that its extra length portion 13 is located farther from the fireproof structure W than the other edge portion of the base material 12. In the first refractory member 111, the second end 16 side of the first end 15 along the lateral direction Y2 is another portion protruding from the fireproof structure W. Hereinafter, in the first fireproof member 111, a portion protruding from the fireproof structure W will be referred to as a protruding portion R.

The second refractory member 112 is attached to the heat insulating material 10 in a wound state in which the second refractory member 112 is wound around the heat insulating material 10 so as to overlap with the extra length portion 13 which is a part of the protruding portion R of the first refractory member 111. .. Then, on the outside of the extra length portion 13 of the first refractory member 111, one long edge 12a side of the base material of the second refractory member 112, one long edge 22a side of the heat-expandable refractory material layer 22, and the film 32. The long edge 32a side of one of the films is polymerized. A overlapping portion of the first refractory member 111 and the second refractory member 112 adjacent to each other in the axial direction of the fluid pipe S is formed, and the first refractory member 111 and the second refractory member 112 are formed of a heat-expandable refractory material layer. The 22s are close to each other via the base material 12 of the first refractory member 111.

The first refractory member 111 is attached to the heat insulating material 10 by being tightened in the circumferential direction by two tightening members 40, and the second refractory member 112 is attached to one tightening member 40 and one auxiliary. It is attached to the heat insulating material 10 by being tightened in the circumferential direction by the tightening member 41. In this embodiment, two tightening members 40 are used. Hereinafter, one tightening member 40 closer to the fireproof structure W will be referred to as a first tightening member 401, and the other tightening member 40 farther than the fireproof structure W will be referred to as a second tightening member 402.

The first tightening member 401 is tightened so as to surround the portion of the first refractory member 111 where the heat-expandable refractory material layer 22 exists from the outside, and the second refractory member 402 is the first refractory member 111 and the second refractory member. The member 112 is tightened so as to surround the overlapping portion from the outside. Therefore, the second tightening member 402 tightens both the extra length portion 13 of the first refractory member 111 and the portion of the second refractory member 112 where the heat-expandable refractory material layer 22 exists.

The tightening member 40 and the auxiliary tightening member 41 are string-shaped bind wires in which a steel wire is coated with a resin such as polyethylene resin. Since the tightening member 40 and the auxiliary tightening member 41 include steel wires, they hardly extend in the longitudinal direction due to heat. The length of the tightening member 40 and the auxiliary tightening member 41 is longer than the length of the refractory member 11 in the longitudinal direction Y1.

In a state where the first refractory member 111 is wound around the peripheral surface of the heat insulating material 10 and the mating surfaces 17 of the first refractory member 111 are butted against each other, the first tightening member 401 is placed along the peripheral surface of the first refractory member 111. , The surplus portion 40a is formed before the portion where both ends in the longitudinal direction of the first tightening member 401 intersect. Further, in a state where the second refractory member 112 is wound around the peripheral surface of the heat insulating material 10 so as to overlap the extra length portion 13 of the first refractory member 111 and the mating surfaces 17 of the second refractory member 112 are butted against each other, the second refractory member 112 is second. When the second tightening member 402 is placed along the peripheral surface of the refractory member 112, the surplus portion 40a is formed before the portions where both ends of the second tightening member 402 in the longitudinal direction intersect.

Then, as shown in FIG. 4, by winding the surplus portions 40a together, the first refractory member 111 and the second refractory member 112 are tightened by the first refractory member 401 and the second refractory member 402, and the first refractory member 112 is tightened. A force is applied to the refractory member 111 and the second refractory member 112 in the diameter reduction direction. Further, the first and second tightening members 401 and 402 maintain a state in which the mating surfaces 17 are butted against each other over the entire lateral direction Y2. In the present embodiment, the states in which the mating surfaces 17 are butted against each other and brought into contact with each other are the short edges 12b of the base material 12, the short edges 22b of the heat-expandable refractory layer 22, and the short edges 32b of the film. It is in a state where they are butted against each other and brought into contact with each other. A mating portion 21 is formed at a position where the mating surfaces 17 are butted against each other. Therefore, the first refractory member 111 and the second refractory member 112 each have a mating portion 21 in which the mating surfaces 17 are butted against each other.

The position where the first tightening member 401 is wound around the first fireproof member 111, that is, the distance from the outer surface of the fireproof structure W to the first tightening member 401 is determined by the expansion coefficient of the heat insulating material 10. In order to maintain the state in which the mating surfaces 17 of the first refractory member 111 are abutted against each other as the heat insulating material 10 has a larger expansion coefficient, it is preferable that the first refractory member 401 is closer to the fireproof structure W. On the other hand, the smaller the expansion coefficient of the heat insulating material 10, the more the first tightening member 401 can maintain the state in which the mating surfaces 17 of the first refractory member 111 are butted against each other even if the first tightening member 401 is separated from the fireproof structure W. In the present embodiment, as shown in FIG. 2, assuming that the length of the protruding portion R from the outer surface of the fireproof structure W is L, the first tightening member 401 is half the length L of the protruding portion R. It is located closer to the fire protection structure W than the position.

Further, the position where the second tightening member 402 is wound around the second refractory member 112, that is, the distance from the first tightening member 401 to the second tightening member 402 is determined by the expansion coefficient of the heat insulating material 10. In order to maintain a state in which the mating surfaces 17 of the first refractory member 111 and the second refractory member 112 are abutted against each other as the heat insulating material 10 has a larger expansion coefficient, the second refractory member 402 is the first refractory member 401. It is preferable that it is close to. On the other hand, as the heat insulating material 10 has a smaller expansion coefficient, the second tightening member 402 can maintain a state in which the mating surfaces 17 of the second refractory member 112 are butted against each other even if the second tightening member 402 is separated from the first tightening member 401. In the present embodiment, the second tightening member 402 is located closer to the first tightening member 401 than a position that is half the protruding length of the second fireproof member 112 from the first fireproof member 111.

Further, the second refractory member 112 is attached to the heat insulating material 10 by being tightened in the circumferential direction by the auxiliary tightening member 41. The auxiliary tightening member 41 tightens the second refractory member 112 in a state of surrounding the extra length portion 13 of the second refractory member 112 from the outside of the base material 12, and exerts a force on the second refractory member 112 in the diameter reduction direction. Is given. Further, the auxiliary tightening member 41 tightens the extra length portion 13 in the second refractory member 112 in which the heat-expandable refractory material layer 22 does not exist. That is, the auxiliary tightening member 41 tightens the extra length portion 13 of the second fireproof member 112 attached to the outside of the heat insulating material 10 at the position farthest from the fireproof structure W along the axial direction of the fluid pipe S. ing.

The length of the auxiliary tightening member 41 is longer than the length of the refractory member 11 in the longitudinal direction Y1. When the second refractory member 112 is wound around the peripheral surface of the heat insulating material 10 and the mating surfaces 17 of the second refractory member 112 are butted against each other, the auxiliary tightening member 41 is placed along the peripheral surface of the second refractory member 112. , The surplus portion 41a is formed before the portion where both ends of the auxiliary tightening member 41 in the longitudinal direction intersect.

Then, by winding the surplus portions 41a together, the second refractory member 112 is tightened by the auxiliary tightening member 41, and a force is applied to the second refractory member 112 in the diameter reduction direction. Further, the auxiliary tightening member 41 maintains a state in which the mating surfaces 17 of the second refractory member 112 are butted against each other over the entire lateral direction Y2. Therefore, the second refractory member 112 has a mating portion 21 at a portion where the mating surfaces 17 are butted against each other. The positions of the mating portions 21 of the first refractory member 111 and the second refractory member 112 adjacent to each other in the axial direction of the fluid pipe S are displaced in the circumferential direction of the fluid pipe S.

The first refractory member 111 and the second refractory member 112 wound around the heat insulating material 10 have surplus portions 40a of the first and second tightening members 401 and 402 and surplus portions 41a of the auxiliary tightening member 41. By winding, it is pressed against the outer peripheral surface of the heat insulating material 10. Specifically, by tightening with the first and second tightening members 401 and 402, the film 32, which is the innermost layer of the first and second refractory members 111 and 112, comes into close contact with the outer peripheral surface of the heat insulating material 10, and the second tightening. By tightening with the attachment member 402 and the auxiliary tightening member 41, the extra length portion 13 of the first refractory member 111 and the extra length portion 13 of the second refractory member 112 are in close contact with the outer peripheral surface of the heat insulating material 10. Therefore, there is almost no gap between the inner peripheral surface of the first refractory member 111 and the outer peripheral surface of the heat insulating material 10, and between the inner peripheral surface of the second refractory member 112 and the outer peripheral surface of the heat insulating material 10. .. In particular, since the heat-expandable refractory layer 22 made of putty does not exist in the extra length portion 13, the extra length portion 13 has a high degree of closeness to the heat insulating material 10.

Further, as shown in FIG. 4, in the circumferential direction of the first and second refractory members 111 and 112, the first and second tightening members 401 and 402 and the auxiliary tightening member 41 are used to form the first and first refractory members. 2 The state in which the mating surfaces 17 of the refractory members 111 and 112 are butted against each other is maintained, and there is no gap between the mating surfaces 17 over the entire lateral direction Y2.

As shown in FIG. 2, in the through hole Wa, the inner peripheral surface of the through hole Wa, the outer peripheral surface of the first end portion 15 (insertion portion) of the first refractory member 111 located in the through hole Wa, and the heat insulating material. The entire gap between the outer peripheral surface of 10 and the outer peripheral surface of 10 is filled with mortar 19 as a filler. Examples of the filler include heat-resistant putty in addition to mortar 19.

Next, a method of attaching the fireproof member 11 and a method of forming a through structure of the fireproof structure W will be described.
First, as shown in FIG. 6, a through hole Wa is formed in the fireproof structure W when the building is constructed. A fluid tube S is inserted through the through hole Wa. The fluid pipe S is covered with the heat insulating material 10.

Next, as shown in FIG. 7, the first refractory member 111 is arranged so that the film 32 of the refractory member 11 faces the outer peripheral surface of the heat insulating material 10 located above the through hole Wa. That is, the first refractory member 111 is wound around the heat insulating material 10 so as to sandwich the heat-expandable refractory layer 22 between the base material 12 and the heat insulating material 10, and the wound state is set. At this time, the first fireproof member 111 is arranged so that the first end 15 side of the first fireproof member 111 is located on the fireproof structure W side and the second end 16 side is located on the side away from the fireproof structure W. do.

Next, the first refractory member 111 is deformed along the circumferential direction of the heat insulating material 10 to form a substantially cylindrical shape. Then, the first refractory member 111 is slid along the heat insulating material 10, and the first end portion 15 which is a part of the first refractory member 111 is inserted into the through hole Wa. As a result of inserting the first end portion 15 of the first fireproof member 111 into the through hole Wa, the protruding portion R of the first fireproof member 111 is formed on the outside of the fireproof structure W.

Next, as shown in FIG. 8, the heat-expandable refractory material is formed in the protruding portion R in a state where the mating surfaces 17 of the first refractory member 111 are butted against each other and the first end portion 15 is inserted into the through hole Wa. The base material 12 covering the layer 22 is tightened from the outside so as to be surrounded by the first tightening member 401. By this tightening, the first tightening member 401 is wound around the first refractory member 111 and intersected to form a surplus portion 40a. After that, the pair of surplus portions 40a are wound up. Then, the first refractory member 111 is attached to the outside of the heat insulating material 10 to become the attached refractory member 11.

Next, in the first refractory member 111, the second refractory member 112 faces the outer peripheral surface of the extra length portion 13 which is a part of the protruding portion R from the fireproof structure W so that the film 32 of the second refractory member 112 faces. The member 112 is arranged. At this time, the second refractory member 112 is arranged so that the first end portion 15 of the second refractory member 112 is located outside the extra length portion 13 of the first refractory member 111.

Next, the second refractory member 112 is deformed and shaped into a substantially cylindrical shape, and the second refractory member 112 is wound around the heat insulating material 10 so as to overlap with the extra length portion 13 of the first refractory member 111. And. Next, with the mating surfaces 17 of the second refractory member 112 abutting against each other, the base material 12 covering the heat-expandable refractory material layer 22 is tightened from the outside so as to be surrounded by the second tightening member 402, and the second tightening is performed. The member 402 is wound around the second refractory member 112 and crossed to form a surplus portion 40a. In the second refractory member 112, the positions where the mating surfaces 17 are butted against each other, that is, the mating portion 21, is deviated from the mating portion 21 of the first refractory member 111 in the circumferential direction of the fluid pipe S. After that, the pair of surplus portions 40a are wound, and the second refractory member 112 is attached to the outside of the heat insulating material 10.

Further, as shown in FIG. 4, the extra length portion 13 of the second refractory member 112 located at the position farthest from the fire protection structure W along the axial direction of the fluid pipe S is tightened from the outside by the auxiliary tightening member 41. .. Then, the auxiliary tightening member 41 is wound around the second refractory member 112 and crossed to form the surplus portion 41a. After that, the pair of surplus portions 41a are wound up. As a result, the second refractory member 112 is attached to the heat insulating material 10. As a result, the first refractory member 111 is attached to the outside of the heat insulating material 10 so that the first refractory member 111 is already attached, and the second refractory member 112 is polymerized on the extra length portion 13 of the first refractory member 111. The step of attaching the second refractory member 112 to the outside of the heat insulating material 10 is completed.

The first and second tightening members 401 and 402 and the auxiliary tightening member 41 maintain the mating surfaces 17 of the first and second refractory members 111 and 112 in abutted state. Further, by the first and second tightening members 401 and 402 and the auxiliary tightening member 41, the film 32 and the extra length portion 13 constituting the inner peripheral surfaces of the first refractory member 111 and the second refractory member 112 are heat insulating materials. It is in close contact with the outer peripheral surface of the 10 and there is almost no gap between the inner peripheral surfaces of the first and second refractory members 111 and 112 and the outer peripheral surface of the heat insulating material 10.

The first end portion 15 which is a part of the first refractory member 111 is arranged in the through hole Wa, and the protruding portion R and the second refractory member 112 which are other portions are arranged outside the fireproof structure W. Will be done. Since the first end portion 15 is located slightly behind the outer surface of the fireproof structure W, the state of the first end portion 15 can be visually recognized from the outside of the fireproof structure W.

Finally, when the entire gap between the outer peripheral surface of the first fireproof member 111 and the inner peripheral surface of the through hole Wa is filled with mortar 19 outside the fireproof structure W, the through structure of the fireproof structure W is formed. Will be done.
The operation of the penetrating structure of the fireproof structure W having the above configuration will be described.

When a fire or the like occurs on the lower side of the fire protection structure W, smoke is generated due to the combustion of the heat insulating material 10 and other materials. At this time, since the through hole Wa is closed by the through structure of the fire protection structure W, the through hole Wa is prevented from becoming a smoke path, and the inconvenience that smoke is transmitted to the upper side of the fire protection structure W is eliminated.

Further, the heat insulating material 10 before being burnt down tends to expand by receiving heat and expanding the bubbles. However, in the through hole Wa, the expansion of the heat insulating material 10 in the diameter expansion direction is prevented by the mortar 19 and the fire protection structure W. Further, on the outside of the fireproof structure W, expansion of the heat insulating material 10 in the diameter expansion direction is prevented by the first and second tightening members 401 and 402 and the auxiliary tightening member 41. Since the mating surfaces 17 of the refractory members 11 are butted against each other, it is possible to prevent the heat insulating material 10 from expanding between the mating surfaces 17. Further, beyond the long edge 22a of the heat-expandable refractory layer 22 of the second refractory member 112 along the axial direction of the fluid pipe S, the extra length portion 13 is brought into close contact with the heat insulating material 10 by the auxiliary tightening member 41. doing. Therefore, the heat insulating material 10 is prevented from expanding in the axial direction of the fluid pipe S.

However, with the passage of time, the fluid pipe S is burnt out, and when the fire spreads along the fluid pipe S, the heat insulating material 10 is carbonized and falls.
Then, as shown in FIG. 9, a gap is generated between the inner peripheral surface of the heat-expandable refractory material layer 22 and the fluid pipe S, and the first refractory member 111 and the second refractory member 112 are directed toward this gap. The heat-expandable refractory layer 22 of the above is thermally expanded. Then, the two heat-expandable refractory layers 22 are continuously formed to form a continuous heat-expandable refractory layer 22. At this time, the maximum expansion thickness of the thermally expanded thermal expansion refractory layer 22 is smaller than the thickness of the heat insulating material 10, and a gap is formed inside the thermally expanded thermal expansion refractory layer 22. However, the heat-expandable refractory layer 22 serves as a protective layer for the base material 12 to protect the base material 12 from flames. Therefore, the melting of the base material 12 can be delayed, and a fire wall formed by the base material 12 can be formed up to a position away from the fire protection structure W, and the spread of fire can be suppressed. Therefore, even if the heat insulating material 10 is burnt down, the time required for the flame to be ejected can be made longer than in the case where the heat-expandable refractory material layer 22 is not provided.

According to the above embodiment, the following effects can be obtained.
(1) In the method of attaching the fireproof member 11, the first fireproof member 111 is attached to the outside of the heat insulating material 10, and the second fireproof member 111 is attached to the outside of the heat insulating material 10 so as to overlap with the extra length portion 13 of the first fireproof member 111. A fireproof member 112 is attached. Further, the first refractory member 111 was tightened by the first tightening member 401 and attached to the outside of the heat insulating material 10, and the second refractory member 112 was tightened by the second tightening member 402 and attached to the outside of the heat insulating material 10. Therefore, according to the penetration structure of the fireproof structure W, the two base materials 12 can extend from the outer surface of the fireproof structure W. Then, in the event of a fire or the like, the heat-expandable refractory material layer 22 functions as a protective layer, and the heat-expandable refractory material layer 22 can delay the melting of the two base materials 12. Therefore, regardless of the thickness and type of the heat insulating material 10, the two base materials 12 can suppress the spread of fire.

(2) In the through structure of the fire protection structure W, the maximum expansion thickness of the heat-expandable refractory layer 22 at the time of thermal expansion is smaller than the thickness of the heat insulating material 10. Therefore, when the heat insulating material 10 is burnt down in the event of a fire or the like, a gap is formed between the outer peripheral surface of the fluid pipe S and the inner peripheral surface of the thermally expanded heat-expandable refractory material layer 22. However, the heat-expandable refractory layer 22 serves as a protective layer, which can delay the melting of the base material 12 and suppress the spread of fire. Therefore, the heat-expandable refractory material layer 22 that thermally expands until the gap caused by the burning of the heat insulating material 10 is filled is selected for each place where the through structure of the fire-prevention structure is provided, or the heat-expandable refractory material layer of the fire-resistant member 11. It is not necessary to change the thickness of 22, and the spread of fire can be suppressed.

(3) The second refractory member 112 is attached to the extra length portion 13 of the first refractory member 111 so that the first end portion 15 side of the second refractory member 112 overlaps. Since the heat-expandable refractory material layer 22 does not exist in the extra length portion 13, the extra length portion 13 can be easily aligned with the outer peripheral surface of the heat insulating material 10, and the second fireproof member 112 can be easily wound around the extra length portion 13. Then, the extra length portion 13 of the first refractory member 111 is brought into close contact with the heat insulating material 10 by winding the second refractory member 112 around the heat insulating material 10 by the second tightening member 402 at the portion overlapping the extra length portion 13. Can be done. As a result, it is possible to suppress the thermally expanded thermal expansion refractory layer 22 from expanding in the axial direction of the fluid pipe S so as to leak from between the heat insulating material 10 and the extra length portion 13, and the thermal expansion refractory material. The layer 22 can be expanded toward the heat insulating material 10 and easily functions as a protective layer of the base material 12.

(4) In the first refractory member 111 and the second refractory member 112, the first end portion 15 side of the second refractory member 112 is overlapped with the extra length portion 13 of the first refractory member 111. Therefore, no gap in the axial direction of the fluid pipe S is generated between the first refractory member 111 and the second refractory member 112, and the ejection of flame can be suppressed.

(5) A mortar 19 is filled between the inner peripheral surface of the through hole Wa and the outer peripheral surface of the first end portion 15 and the heat insulating material 10. Therefore, in the through hole Wa, the expansion of the heat insulating material 10 in the diameter expansion direction can be suppressed by the mortar 19 and the fire protection structure W.

(6) In the penetrating structure of the fireproof structure W, the heat-expandable fireproof material layer 22 of the first fireproof member 111 and the heat-expandable fireproof material layer 22 of the second fireproof member 112 are the first fireproof member 111. They are close to each other via the extra length portion 13 (base material 12). Therefore, when a fire or the like occurs, the heat-expandable refractory layer 22 thermally expands and becomes continuous in the axial direction of the fluid pipe S. As a result, the base material 12 can be protected by the connected heat-expandable refractory layer 22.

(7) The position of the mating portion 21 of the first refractory member 111 and the position of the mating portion 21 of the second refractory member 112 are deviated from each other in the circumferential direction of the fluid pipe S. The mating portion 21 is a place where the mating surfaces 17 are separated from each other and a flame is ejected. For example, even if the first refractory member 111 near the fire source burns and a flame is ejected from the mating portion 21, the flame reaches the mating portion 21 of the second refractory member 112 located at a position shifted in the circumferential direction. It can be suppressed and the flame can be suppressed from leaking from the mating portion 21 of the second refractory member 112.

(8) The first and second tightening members 401 and 402 are made of steel wire. Therefore, the first and second tightening members 401 and 402 do not melt or extend even when exposed to heat such as a fire, and the first and second refractory members 401 and 402 cause the first and second refractory members. It is possible to maintain a state in which the mating surfaces 17 of 111 and 112 are butted against each other. Therefore, unlike the case where both ends of the refractory member 11 in the longitudinal direction Y1 are overlapped and pasted by adhesion, the adhesive surface does not melt and the refractory member 11 does not open. Further, it is not necessary to wind the refractory member 11 around the heat insulating material 10 in multiple layers to maintain the state in which the refractory member 11 surrounds the heat insulating material 10, and the cost required for installing the through structure can be suppressed.

(9) In the second fireproof member 112, the extra length portion 13 located at the farthest place from the fireproof structure W is tightened by a metal auxiliary tightening member 41. Since the heat-expandable refractory layer 22 does not exist in the extra length portion 13 and is formed only by the base material 12, the auxiliary tightening member 41 keeps the extra length portion 13 along the outer peripheral surface of the heat insulating material 10. It is easy to perform the work of tightening.

(10) The first refractory member 111 and the second refractory member 112 include a film 32, and the film 32 is wound around the heat insulating material 10 in a state of being in contact with the heat insulating material 10. The film 32 can prevent the heat-expandable refractory layer 22 from sticking to the heat insulating material 10.

(11) The second refractory member 112 is superposed on the extra length portion 13 of the first refractory member 111, and this superposed portion is tightened by the second tightening member 402. Therefore, it is possible to prevent the thermally expandable refractory material layer 22 of the first refractory member 111 from thermally expanding toward the second refractory member 112.

(12) The base material 12 of the refractory member 11 is formed by compounding a matrix resin with a glass cloth, and the surface of the glass cloth is uneven. Therefore, when a fire or the like occurs, for example, when the thermally expandable refractory material layer 22 of the second refractory member 112 thermally expands toward the first refractory member 111, the unevenness of the extra length portion 13 of the first refractory member 111 Therefore, the movement of the heat-expandable refractory layer 22 can be suppressed.

(13) By forming the penetrating structure of the fireproof structure W by the fireproof member 11, the heat-expandable fireproof material layer 22 that has been thermally expanded serves as a protective layer, and the melting of the base material 12 can be delayed. Therefore, according to the penetration structure of the fire protection structure W, the spread of fire can be suppressed regardless of the thickness of the heat insulating material 10. Therefore, the refractory member 11 of the present embodiment can be used even when the heat-expandable refractory material layer 22 can be thermally expanded to fill the gap.

The above embodiment may be changed as follows.
○ As shown in FIG. 10, the extra length portion 13 of the first refractory member 111 is eliminated, and the heat-expandable refractory material layer 22 of the first refractory member 111 and the heat-expandable refractory material layer 22 of the second refractory member 112 are formed. May be brought into close contact with the axial direction of the fluid pipe S. In this configuration, when a fire or the like occurs, the heat-expandable refractory layer 22 of the first refractory member 111 and the heat-expandable refractory layer 22 of the second refractory member 112 are integrated to form a fluid tube S. The heat-expandable refractory layer 22 can be made continuous in the axial direction of the above. As a result, the protective layer of the base material 12 can be made continuous in the axial direction of the fluid tube S, and the melting of the base material 12 can be suppressed.

In the embodiment, as the refractory member 11, a member whose length in the longitudinal direction Y1 is the same as or slightly longer than the peripheral length of the heat insulating material 10 is used. However, the refractory member 11 is not limited to this. As shown in FIG. 11, the long strip-shaped refractory member 11 may be spirally wound around the outside of the heat insulating material 10. In this case, the refractory member 11 is spirally wound so as to sandwich the heat-expandable refractory layer 22 between the base material 12 and the heat insulating material 10, and a part of the refractory member 11 adjacent to the fluid pipe S in the axial direction is formed. It is polymerized and attached to the outside of the heat insulating material 10. Further, in a state where a part of the refractory member 11 wound in a spiral shape is inserted into the through hole Wa, the refractory member 11 is tightened so as to surround the refractory member 11 from the outside by the tightening member 40 to tighten the refractory member 11 to the outside of the heat insulating material 10. Attach to.

In the embodiment, as the refractory member 11, a member whose length in the longitudinal direction Y1 is the same as or slightly longer than the peripheral length of the heat insulating material 10 is used. However, the refractory member 11 is not limited to this. The long strip-shaped refractory member 11 may be mounted by being multiple-wound on the outside of the heat insulating material 10.

○ In the embodiment, as the refractory member 11, a long strip-shaped refractory member 11 cut so that the length in the longitudinal direction Y1 is the same as or slightly longer than the peripheral length of the heat insulating material 10 is used, and the fluid is used. A fireproof member 11 was attached to the pipe S. However, the method of attaching the refractory member 11 is not limited to this. The long strip-shaped refractory member 11 wound in a roll shape is unwound from the rolled state, or the refractory member 11 in the folded state is wound around the outside of the heat insulating material 10 while extending, and the length of the refractory member 11 in the longitudinal direction Y1 is determined. It may be cut at a position equal to or slightly longer than the peripheral length of the heat insulating material 10.

○ As a method of attaching the refractory member 11 of the embodiment, the first refractory member 111 is attached to the outside of the heat insulating material 10 so that the first refractory member 111 is already attached, and the extra length portion 13 of the first refractory member 111 is attached. The second refractory member 112 was attached to the outside of the heat insulating material 10 so that the two refractory members 112 overlapped, and the attachment step was completed. However, after this attachment step, one or a plurality of steps of superimposing another refractory member 11 on the extra length portion 13 of the second refractory member 112, which is another refractory member 11, and attaching the other refractory member 11 to the outside of the heat insulating material 10. You may go once. As a result, one or more of the first refractory member 111, the second refractory member 112, and the other refractory member 11 are attached to the outside of the heat insulating material 10.

○ In the embodiment, the first end portion 15 of the second refractory member 112 is polymerized on the outside of the extra length portion 13 of the first refractory member 111, but the extra length portion 13 of the first refractory member 111 is formed on the second refractory member 111. It may be polymerized on the outside of the first end portion 15 of the member 112.

○ The penetrating structure of the fireproof structure W may be installed on both sides (upper side and lower side) of the fireproof structure W in the thickness direction.
○ The fire protection structure may be the wall of the building. When the fire protection structure is a wall, the penetration structure of the fire protection structure is installed on both sides in the thickness direction of the wall. In this case, the through hole Wa can be closed even if a fire or the like occurs on either side of the wall.

○ In the extra length portion 13, an adhesive layer may be provided on the surface facing the outer peripheral surface of the heat insulating material 10, and the extra length portion 13 may be directly attached to the outer peripheral surface of the heat insulating material 10 by the adhesive layer.
○ The auxiliary tightening member 41 may be a band-shaped aluminum band, a string-shaped wire, a number wire, or the like, instead of the string-shaped bind wire.

○ The tightening member 40 may be a band-shaped aluminum band, a string-shaped wire, a number wire, or the like, instead of the string-shaped bind wire.
○ The auxiliary tightening member 41 may be provided not in the extra length portion 13 of the second refractory member 112 but in the portion where the heat-expandable refractory material layer 22 exists. Further, even if the auxiliary tightening member 41 is provided in the extra length portion 13 of the second refractory member 112 and is further provided at a position between the auxiliary tightening member 41 and the second tightening member 402. good.

○ A tightening member 40 may be further provided between the first tightening member 401 and the second tightening member 402.
○ In the embodiment, with the mating surfaces 17 at both ends of the first refractory member 111 and the second refractory member 112 in the longitudinal direction Y1 abutting each other to form a mating portion 21, the first and second refractory members 401 and 402 and auxiliary parts are used. The first and second refractory members 111 and 112 are tightened by the tightening member 41, but the present invention is not limited to this. The first and second tightening members are in a state where the first and second refractory members 111 and the second refractory member 112 are extended in the longitudinal direction Y1 and the overlapping ends 18 of the first and second refractory members 111 and 112 are overlapped with each other. The first and second refractory members 111, 112 may be tightened by 401, 402 and the auxiliary tightening member 41.

○ In a state where both ends of the refractory member 11 in the longitudinal direction Y1 are butted against each other, it is sufficient that the short edges 12b of the base material 12 are butted against each other, and the short edge 22b of the heat-expandable refractory material layer 22 and the short edge 32b of the film. May be separated.

○ The position of the mating portion 21 of the first refractory member 111 and the position of the mating portion 21 of the second refractory member 112 may coincide with the circumferential direction of the fluid pipe S.
○ The extra length portion 13 of the refractory member 11 may be omitted.

○ The film 32 of the refractory member 11 may be omitted.
○ The material of the base material 12 may be changed to another material as long as it is flexible and nonflammable.

○ The fluid flowing through the fluid pipe S may be other fluid such as water instead of the refrigerant.
○ The fireproof structure W may be made of a material other than a concrete wall as long as it can prevent the heat insulating material 10 from expanding in the diameter expansion direction, and may be made of, for example, a rigid polyurethane foam or a rock wool moisturizing plate.

R ... projecting part, S ... fluid pipe, W ... fireproof structure, Wa ... through hole, Y1 ... longitudinal direction, 10 ... heat insulating material, 11 ... fireproof member, 12 ... base material, 13 ... extra length part, 19 ... filling Mortar as a material, 21 ... mating part, 22 ... heat-expandable refractory material layer, 40 ... tightening member, 41 ... auxiliary tightening member, 111 ... first fireproof member as an attached fireproof member, 112 ... separate Second refractory member as a refractory member of.

Claims (11)

A penetrating structure of a fireproof structure composed of a metal fluid tube covered with a heat insulating material made of an independent foam material, to which a fireproof member is attached to a portion penetrating a through hole of the fireproof structure.
The refractory member has a base material made of a strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material.
The refractory member is attached to the outside of the heat insulating material by winding it around the heat insulating material so as to sandwich the heat-expandable refractory material layer between the base material and the heat insulating material.
A part of the attached fireproof member enters the through hole, and the other part protrudes from the fireproof structure.
The inner surface of the through hole and the heat insulating material located in the through hole and the outer surface of a part of the refractory member that has entered the through hole are filled with a filler.
In the axial direction of the fluid pipe, the fireproof member has a larger portion protruding from the fireproof structure than a portion that has entered the through hole.
The heat-expandable refractory material layer is a penetrating structure of a fireproof structure, characterized in that the maximum expansion thickness from the base material when thermally expanded is smaller than the thickness of the heat insulating material. Assuming that the refractory member attached to the outside of the heat insulating material is an attached refractory member with a part of the through hole inserted, the outside of the heat insulating material is a part of the attached refractory member. The penetrating structure of the fireproof structure according to claim 1, wherein another fireproof member is attached in a wound state so as to overlap. The penetrating structure of the fireproof structure according to claim 2, wherein the other fireproof member is polymerized on the outside of a part of the attached fireproof member. The refractory member includes an extra length portion in which the heat-expandable refractory material layer does not exist along one of the edges of the pair of edges extending in the longitudinal direction of the base material, and the mounted refractory member. The member is attached to the heat insulating material so that the extra length portion is located farther from the fireproof structure than the other edge portion of the base material, and another fireproof member is the heat expandable fireproof member. The penetrating structure of the fireproof structure according to claim 2 or 3, wherein the material layer is attached to the heat insulating material in a state where the material layer overlaps with the extra length portion of the attached fireproof member. The fire prevention member according to any one of claims 2 to 4, wherein the refractory members adjacent to each other in the axial direction of the fluid pipe have the heat-expandable refractory material layers closely or close to each other in the axial direction. Penetration structure of the structure. The refractory member has a mating portion in which ends located at both ends in the longitudinal direction are abutted or overlapped with each other, and the refractory members adjacent to each other in the axial direction of the fluid pipe have the position of the mating portion. The penetrating structure of the fireproof structure according to any one of claims 2 to 5, which is displaced in the circumferential direction of the fluid pipe. The refractory member is spirally wound around the outside of the heat insulating material so that the heat-expandable refractory layer is sandwiched between the base material and the heat insulating material, and is adjacent to the fluid pipe in the axial direction. The penetrating structure of the fireproof structure according to claim 1, wherein a part of the fireproof member is polymerized. It is a method of attaching a fireproof member to a place where a metal fluid tube covered with a heat insulating material made of an independent foam material penetrates a through hole of a fireproof structure.
The refractory member has a base material made of a strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material.
The refractory member is wound around the heat insulating material so as to sandwich the heat-expandable refractory layer between the base material and the heat insulating material so as to be wound.
In the wound state, the ends of the refractory member located at both ends in the longitudinal direction are butted or overlapped with each other, and a part of the refractory member is inserted into the through hole, in a band shape or a string shape. The refractory member is tightened so as to surround the refractory member from the outside by the tightening member of the above, and the refractory member is attached to the outside of the heat insulating material to be already attached.
Another refractory member is wound around the heat insulating material so as to overlap a part of the protruding portion from the fireproof structure in the mounted refractory member to be in a wound state.
A step of tightening the other refractory member from the outside by another fastening member to attach the other refractory member to the outside of the heat insulating material.
Or said another refractory member further have one or more times the line a step of attaching to the outside of another refractory member polymerized by the heat insulating material, from the fire structure, greater than enter the amount into the through hole A method of mounting a refractory member, which is characterized by mounting to a distant position. The refractory member includes an extra length portion in which the heat-expandable refractory material layer does not exist along one of the edges of the pair of edges extending in the longitudinal direction of the base material, and is provided in the axial direction of the fluid pipe. The overlapping portion of the refractory members adjacent to the above is wound around the outside of the extra length portion so that the heat-expandable refractory material layer of the refractory member and the base material overlap with each other.
A claim for tightening the extra length portion of the refractory member attached to the outside of the heat insulating material at a position farthest from the fireproof structure along the axial direction of the fluid pipe with a band-shaped or string-shaped auxiliary tightening member. Item 8. The method for mounting the fireproof member according to Item 8. It is a method of attaching a fireproof member to a place where a metal fluid tube covered with a heat insulating material made of an independent foam material penetrates a through hole of a fireproof structure.
The refractory member has a base material made of a long strip-shaped non-combustible material and a heat-expandable refractory material layer provided on one surface of the base material.
The refractory member is spirally wound so as to sandwich the heat-expandable refractory material layer between the base material and the heat insulating material, and a part of the refractory members adjacent to each other in the axial direction of the fluid pipe is overlapped with each other. And attach it to the outside of the heat insulating material,
The refractory member wound in a spiral shape is provided with a band-shaped or string-shaped tightening member in a state where a part of the refractory member is inserted into the through hole so that the portion protruding from the fireproof structure is larger. A method for attaching a refractory member, which comprises tightening the refractory member so as to surround it from the outside and attaching the refractory member to the outside of the heat insulating material. Any of claims 8 to 10, wherein the space between the inner surface of the through hole and the heat insulating material located in the through hole and the outer surface of a part of the refractory member that has entered the through hole is filled with a filler. The method for mounting the refractory member according to item 1.

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