JP4741436B2 - Fire blocking hole closure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fireproof fill-up body for a hole wherein the fill-up quality is made uniform to improve the fireproof quality, while the workability thereof is also improved. <P>SOLUTION: The hole fill-up body for fireproofing is filled in a gap S between the internal peripheral surface B1a of a through hole B1 bored in a fireproof section B and the external surfaces of long lengths C inserted therein. A fireproof block A1 in a bag is made up by packing a fireproof block 1 having a fireproof material as principal component in a bag 2. A thermally expansive fireproof sheet A2 in a bag is made up by packing a thermally expansive fireproof sheet 3 having a thermally expansive fireproof material as principal component in a combustible bag 4. The fireproof block A1 in a bag is wound around with the thermally expansive fireproof sheet A2 in the manner of exposing its both end-faces A1a. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a fire-protecting hole closing body that is filled in a gap between an inner peripheral surface of a through-hole formed in a fire-protecting compartment and an outer surface of a long body inserted through the through-hole.

Generally, in long-distance pipes such as air conditioning pipes and electric cables in buildings, pipes are made through through holes formed in walls and floors. Therefore, the through holes are blocked from the viewpoint of fire and the like. Therefore, it is necessary to divide the adjacent rooms into fire protection zones.
Conventionally, a large number of fire hole closures are filled in the gaps between the through holes formed in the walls and floors forming the fire prevention compartment and the outer surfaces of the long bodies such as pipes inserted therethrough. The through hole is closed.
As a specific example, a soft thermally expandable refractory material sheet is laminated on one side of a rectangular refractory block made of ceramic fiber, which is a refractory material, and this laminate is made of a synthetic cloth or a combustible bag of film. A large number of fire-blocking obstructions of the same thickness that are wrapped in are wrapped around the elongated body in an annular gap between the through-hole and the outer surface of the elongated body such as a pipe inserted through the through-hole. In the unlikely event that a fire is encountered, the soft thermal expansion refractory sheet expands and wraps the burnt part of the long body, delaying the spread of fire. (For example, refer to Patent Document 1).

JP 2002-247735 A (page 3-4, FIGS. 1 and 2)

In such a fire-blocking hole closing body, since the laminated body in which the fire-resistant block and the soft thermally expandable sheet are laminated is packaged in a bag body, the misalignment between the fire-resistant block and the soft thermally expandable sheet occurs. Although the manufacturing is easy and the cost can be reduced, the laminated state of the fireproof block and the soft thermal expansion sheet is hidden by the bag and cannot be seen. In, there are those filled with the soft thermal expansion refractory material sheet facing the inner peripheral surface side of the through hole and those filled with the soft thermal expansion refractory material sheet facing the long body side Will form a random filling state.
And in the unlikely event that a fire is encountered, the soft thermal expansion refractory material sheet filled on the inner peripheral surface side of the through hole is filled with the soft thermal expansion refractory material sheet facing the inner peripheral surface side of the through hole. Is mainly thermally expanded, and the soft thermally expandable refractory material sheet is mainly thermally expanded on the long body side in a state where the soft thermally expandable refractory material sheet is filled on the long body side.
Therefore, since the filling state is random, even if the quality of each product is good, there is a problem that the fire prevention quality varies when an unexpected fire is encountered in a large number of filling states.
In addition, in the parallel state where the side surfaces of the fire-resistant hole blocking body on which the soft thermal expansion fireproof sheets are not laminated are in contact with each other, it becomes a part that does not receive thermal expansion of the soft thermal expansion fireproof sheets, so even in the event of a fire There is a problem of fire smoke entering between the butts.
In addition, there is a similar problem in a fireproof hole closing body in which a laminated body in which soft heat-expandable fireproof sheets are laminated on both sides of a fireproof block is wrapped with a bag.
This invention is made | formed in view of said situation, The place made into the objective provides the obstruction | occlusion body for a fire hole which aimed at improvement of workability, the filling quality was uniform, and the improvement of fire prevention quality was aimed at. In the point.

The characteristic structure of the first fire hole closing member of the present invention is filled in the gap between the inner peripheral surface of the through hole formed in the fire prevention partition and the outer surface of the long member inserted through the through hole. In the configuration
A fireproof block mainly composed of a refractory material is packed into a bag body, and a thermally expandable fireproof sheet mainly composed of a thermally expandable fireproof material is packed into a flammable bag body. The bag-filled heat-expandable fireproof sheet is wound in a state where both end faces of the bag-filled fireproof block are exposed.

According to the above characteristic configuration, the fireproof block and the heat-expandable fireproof sheet are individually wrapped in a bag, so that small pieces of the fireproof block or the heat-expandable fireproof sheet are unlikely to leak, The bag has a function that does not disturb the thermal expansion of the heat-expandable fireproof sheet when it encounters a fire, but the bag-filled heat-expandable firesheet is wrapped around the bag-filled fireproof block. Using the boundary between the fireproof block and the bag-filled heat-expandable fireproof sheet as a mark, between the through hole and the outer surface of the elongated body inserted through the hole, this mark side corresponds to the opening of the through hole. The bag-filled thermally expandable fire-resistant sheet and the inner peripheral surface of the through-hole are filled with a large number of fire-proof hole closing bodies in an overlapping state so as to surround the long body in the annular gap of The outside of the long body inserted through the through hole It is possible to the corresponding state, even in the abutting portion of side surfaces of the fire hole closure filled in juxtaposition, it is possible to realize a state where a bag input intumescent fireproof sheet corresponds.
As a result, in the unlikely event of a fire, a large number of fire-protecting hole closure bodies that fill the annular gap between the through-hole and the elongated body inserted through the through-holes While the body is burnt down, the thermally expansible fireproof sheet is thermally expanded, and the outer surface of the long body inserted through the through hole is securely pressed, and by receiving such pressure contact, for example, an air conditioning pipe In the case of a pipe in which a thick synthetic resin layer is formed on the outer periphery of the central copper pipe, the result is that the synthetic resin layer is burnt down and softened by fire heat, resulting in a state where the volume of the long body decreases. The heat-expandable fireproof sheet that directly corresponds to the long body is thermally expanded toward the long body, so that the decrease can be replenished and the spread of fire can be delayed, and matching is performed in parallel. Even on the side surface In the unlikely event that a fire is encountered, the bag of the heat-expandable fireproof sheet in the bag burns out and the heat-expandable fireproof sheet thermally expands, ensuring the intrusion of fire smoke from the butt Can be prevented.

  Therefore, using the bagging structure, the boundary between the bag-type fireproof block and the bag-heat-expandable fireproof sheet is used as a mark, and the mark side is inserted into the through-hole so as to correspond to the opening of the through-hole. By filling the gap with the outer surface of the long body, it is possible to form a filling state with good filling quality, so that the filling direction and the size of the fire blocking hole are filled without concern Therefore, the filling operation can be performed quickly and easily, the workability can be improved, and the filling quality can be made uniform, so that the fire prevention quality can be improved.

  The characteristic structure of the 2nd fire prevention hole obstruction body of this invention exists in the point to which the adhering means which adheres the said bag-containing heat-expandable fireproof sheet to a bag-containing fireproof block in the winding state is provided.

  According to the above-described characteristic configuration, the bag-containing fireproof block and the bag-filled thermally expandable fireproof sheet are fixed by the fixing means, so that the displacement movement due to the relative movement between the bag-filled fireproof block and the bag-filled thermally expandable fireproof sheet is prevented. It can be handled as an integral body that does not occur, and a filling operation can be quickly and easily performed in a filling gap that is a gap between the through hole and the outer surface of the elongated body inserted through the through hole.

  Therefore, it is possible to efficiently fill a large number of closed holes for fire prevention into the filling gap without paying attention to the displacement movement due to the relative movement between the bag-containing fireproof block and the bag-filled heat-expandable fireproof sheet. It is possible to improve the performance.

  According to a third aspect of the present invention, there is provided a characteristic feature of the fire-resistant hole closing member, wherein the bag-containing fire-resistant block and the bag-containing thermally expandable fire-resistant sheet are made of a nonwoven fabric containing a thermoplastic synthetic resin yarn. Fixing means for winding a belt-shaped nonwoven fabric band made of a nonwoven fabric containing thermoplastic synthetic fiber yarns in a direction crossing the winding direction of the heat-resistant fireproof sheet, and heat-sealing both the bag body portions facing the nonwoven fabric band It is in the point fixed by.

According to the above characteristic configuration, the non-woven fabric is used for the bag body, so that the fire-resistant block or the heat-expandable fire-resistant sheet has a function of being difficult to break, and the bag body of the bag-containing fire-resistant block and the bag-filled heat-expandable fire-resistant sheet. Is composed of a nonwoven fabric containing thermoplastic synthetic resin yarn, and the nonwoven fabric band is also composed of a nonwoven fabric containing thermoplastic synthetic fiber yarn. The block and the bag body of the bag-filled heat-expandable fireproof sheet can be fixed.
In addition, in the state where the bag body and the nonwoven fabric band are fixed, the nonwoven fabric band is wound in the direction intersecting with the winding direction of the bag-filled heat-expandable fireproof sheet. Fill the gaps between the fire blocking holes already filled in the holes or the gaps between the fire blocking holes and the inner peripheral surface of the through holes without filling the new fire blocking holes with the non-woven band. be able to.

  Therefore, it is possible to improve both the manufacturability and workability of the fire blocking hole closing body.

  The characteristic structure of the fourth fire-protecting hole closing member of the present invention is that the bag-containing fireproof block and the bag-containing heat-expandable heat-resistant sheet are made of non-woven fabric, and the bag portions facing each other in a wound state are hot. It is in the point fixed by the fixing means which consists of a melt adhesive.

  According to the above-mentioned characteristic configuration, the nonwoven fabric is used for the bag body, so that the fireproof block or the heat-expandable fireproof sheet has a function of being difficult to break, but the nonwoven fabric is not suitable for bonding with a general adhesive. On the other hand, by fixing the bags facing each other by the fixing means made of the hot melt adhesive, it is possible to suppress the displacement movement of the bag-containing fire-resistant block and the bag-containing thermally expandable fire-resistant sheet during the filling operation.

  Therefore, while improving the production, it is possible to efficiently fill a large number of closed holes for fire prevention into the filling gap without paying attention to the displacement movement due to the relative movement between the bag-containing fireproof block and the bag-heat-expandable fireproof sheet. Therefore, the workability in filling can be improved.

The characteristic structure of the fifth fire-protecting hole closing body of the present invention is filled in the gap between the inner peripheral surface of the through-hole formed in the fire-protecting compartment and the outer surface of the long body inserted through the through-hole. In configuration,
A flexible thermal expansion fireproof sheet mainly composed of a heat-expandable fireproof material is wrapped around a fireproof block mainly composed of a fireproof material in a state where both ends of the fireproof block are inserted in the closing body insertion direction. The heat-expandable fireproof sheet and the fireproof block are packaged in a combustible bag, and a mark indicating the insertion direction of the closing body is formed on the package.

According to the above-mentioned characteristic configuration, by being wrapped in the bag body, in addition to the small fragments of the fire-resistant block or the heat-expandable fire-resistant sheet being difficult to leak out, it is burned out when an emergency fire is encountered. The bag body is used to form a mark indicating the insertion direction of the closing body while having a function that does not disturb the thermal expansion of the heat-expandable fireproof sheet, and the mark side corresponds to the opening of the through hole. In addition, a large number of fire protection hole closing bodies are filled in an overlapping state in which an annular gap between the through hole and the outer surface of the long body inserted through the through hole is arranged so as to surround the long body. Thus, the bag-filled heat-expandable fireproof sheet wound with the ends of both sides of the fireproof block in the insertion direction of the closed body is wound on the inner peripheral surface of the through hole and the outer surface of the elongated body inserted in the through hole It can be in a corresponding state and in parallel state Also in Hama been side abutting portion between the fire hole closure, it is possible to realize a state where the thermal expansion fireproof sheet corresponds.
As a result, in the unlikely event of a fire, a large number of fire-protecting hole closure bodies that fill the annular gap between the through-hole and the elongated body inserted through the through-holes While the body is burnt down, the thermally expansible fireproof sheet is thermally expanded, and the outer surface of the long body inserted through the through hole is securely pressed, and by receiving such pressure contact, for example, an air conditioning pipe In the case of a pipe in which a thick synthetic resin layer is formed on the outer periphery of the central copper pipe, the result is that the synthetic resin layer is burnt down and softened by fire heat, resulting in a state where the volume of the long body decreases. The heat-expandable fireproof sheet that directly corresponds to the long body is thermally expanded toward the long body, so that the decrease can be replenished and the spread of fire can be delayed, and matching is performed in parallel. Thermally expandable refractory sheet on the side Since corresponding position, if it encounters any chance of a fire, it is possible to thermally expandable fireproof sheets while the bag body is burned is thermally expanded, to reliably prevent the fire smoke from entering from the abutting portion.

  Therefore, a mark is formed using a bagging structure, and the mark side is filled in the gap between the through hole and the outer surface of the elongated body inserted through the mark so as to correspond to the opening of the through hole. As a result, it is possible to form a filling state with good filling quality, so that filling can be performed without worrying about the direction of filling and the size of the closed hole for fire prevention. Thus, the workability can be improved and the filling quality can be made uniform, so that the fire prevention quality can be improved.

  A feature of the sixth fire-protecting hole closing member of the present invention is that the mark is formed corresponding to the end portions on both sides in the closing member insertion direction of the fire-resistant block.

  According to the above characteristic configuration, since the end portion where the fireproof block is exposed corresponds to the mark, the fireproof hole is formed in the gap between the inner peripheral surface of the through hole and the outer surface of the long body inserted through the through hole. In addition to being able to fill the obstruction without fail, and with many fire hole obstructions filled, there will be visible marks on the opening of the through hole. This makes it possible to identify mistakes and correct them.

  Therefore, it is possible to improve workability and filling quality.

  Hereinafter, a fire-protecting hole closing body to which the present invention is applied will be described based on the drawings.

[First Embodiment]
In this 1st Embodiment, as shown in FIGS. 1-9, with respect to the through-hole B1 which forms the rectangular (rectangular columnar) space which is a floor hole formed in the fire prevention division B which consists of a housing. For example, an inner circumferential surface B1a of the through hole B1 through which a long body C composed of a piping group C1 in which a large number of air-conditioning pipes C1a are gathered on a gantry C2 is inserted, and a long body C inserted through this A fire-protecting hole closing member A that fills the gap S between the exposed outer surface of the member and the outer surface will be described. Here, as shown in FIG. 2, the space K sandwiched between the air-conditioning pipes C1a is substantially closed from the outside along the longitudinal direction, and therefore does not constitute a gap filling the fire-protection hole closing body A.

  Moreover, the closing body support metal fitting D for filling the fire hole closing body A in a receiving state is used for the through hole.

  The closing body support fitting D is configured to receive and support the fire closing body A filled in the gap S between the rectangular through hole B1 penetrating the housing B and the long body C inserted therethrough. As shown in FIGS. 1 and 2, a filler receiving portion D1 formed in a U shape in plan view corresponding to the shape of both ends of the through hole B1, and three outer peripheral edges of the receiving portion D1. The latching portion D3 is formed with a latching portion D2 formed with a latching portion D2 that can be latched and screwed to the opening edge portion of the through hole B1 that is integrally extended from the location.

  In this embodiment, the air conditioning pipe C1a, which is a constituent member of the long body C, is a pipe composed of a feed pipe, a return pipe, a drain pipe, and a control cable that pipes the indoor unit and the outdoor unit of the air conditioner. Both return pipes have a pipe structure in which a heat insulating layer made of a synthetic resin is coated around a central metal pipe. Here, the drain pipe and the control cable are not shown.

  As shown in FIG. 2, the gantry C2, which is a constituent member of the long body C, is provided along the piping path of the air conditioning piping, and stretches the piping at intervals along the piping path. It is comprised from the cross-shaped mounting base C2a and the side plate C2b arrange | positioned at the both-plate end.

  The long body C is inserted through the center of the hole with respect to the through hole B1, and an annular gap S is formed around the long body C with the inner peripheral surface B1a of the through hole B1.

  In this embodiment, as shown in FIG. 2, the inner peripheral surface of the side plate C2b of the gantry C2 and the through-hole B1 facing the same is used by using a large number of fire blocking holes A having the same member configuration but different sizes. The gap S between B1a is filled.

  As shown in FIG. 2 and FIG. 4, the fire hole closing member A in this embodiment uses six types having the same depth dimension in the filling direction of the through hole B1 but having different lengths and widths.

  Moreover, although the fire-blocking hole closing body A is not shown in the drawing, the product structure is provided with a number that does not have insufficient filling even when the occupied area of the long body C is small with respect to the through-hole B1. It has become.

  Here, the length L1 in the filling direction of each of the fire hole closing bodies A is formed to be the same as or substantially the same as the through length L2 of the through hole B1.

  The fire-protecting hole closing body A includes a fire-resistant block A1 in which a fire-resistant block 1 mainly composed of a fire-resistant material is packed in a bag body 2, and a thermally expandable fire-resistant sheet mainly composed of a thermally expandable fire-resistant material. A bag-filled heat-expandable fireproof sheet A2 formed by packing 3 in a combustible bag body 4 is wound in a state where both end faces A1a of the bag-filled fireproof block A1 are exposed.

  The bag-filled heat-expandable fireproof sheet A2 is wound around the bag-filled fireproof block A1 in a state where both ends A2a in the longitudinal direction are in contact with each other, and is in a wound state in which no step is generated on the circumferential surface in the winding direction.

  This fireproof hole closing body A has a belt-like non-woven band 5 as a fixing means wound around in a direction intersecting the winding direction of the bag-filled heat-expandable fireproof sheet A2, and the bag-filled fireproof block A1 and the bag-filled heat expansion The fire-resistant sheet A2 is configured in a bundle.

  The non-woven band 5 is wound in a state of covering and covering both ends A2a with which the bag-containing heat-expandable fireproof sheet A2 is attached, and is integrated with the bag-containing fireproof block A1, thereby eliminating the catching portion. It is configured so that filling can be performed smoothly.

  The refractory block 1 is a cotton lump in which short fibers of rock wool or glass wool are entangled with each other.

  The heat-expandable fireproof sheet 3 is mainly composed of rock wool short fibers having heat insulation, which is an example of a fire-resistant material, and expanded graphite, pulp material, etc., which are examples of a heat-expandable material so as to expand in a fire. It is made of felt by wet papermaking, and is lightweight and flexible enough to be elastically deformed. The heat-expandable refractory sheet 3 is manufactured to a thickness of about 3 mm, which is cheap in terms of ease of manufacture and cost by wet papermaking, and the volume required for the heat-expandable refractory sheet 3 is increased depending on the number of windings. Can be set.

The bags 2 and 4 and the nonwoven fabric band 5 of the bag-containing fireproof block A1 and the bag-containing thermally expandable fireproof sheet A2 are, for example, PE having a basis weight of about 40 g / m ² and a thickness of about 0.18 mm. It is comprised from the combustible nonwoven fabric containing thermoplastic synthetic resin yarns, such as PET.

  The nonwoven fabric band 5 is fixed by heat-sealing the bag-containing fireproof block A1 and the bag body portion of the bag-containing heat-expandable fireproof sheet A2 by heating means such as an iron.

  As shown in FIG. 3, the bag-containing fireproof block A1 and the bag-containing heat-expandable heat-resistant sheet A2 are hot-melt adhesives that fix both outer edges of the bags 2, 4 facing each other in a wound state. 6 is fixed.

  In this embodiment, as shown in FIG. 2 and FIG. 9, in order to close the small gap S remaining in the state where the gap S is filled with the fire prevention hole closing body A, the flexible size and form of compensation are different. Thermally expandable fireproof sheet 7 is provided. The thermal expansion fireproof sheet 7 for filling is made of the same material as the thermally expandable fireproof sheet 3.

  The bag body 2 has a bag capacity equivalent to the volume of the fireproof block 1 and is packed in a restrained state in which the direction of the fireproof block 1 cannot be changed in the bag 2. The bag body 4 has a bag capacity equivalent to the volume of the heat-expandable fireproof sheet 3 and is packed in a restrained state in which the direction of the heat-expandable fireproof sheet 3 cannot be changed in the bag 3. And easy to handle.

Next, the filling method of the fire blocking hole A having such a configuration will be described.
First, as shown in FIGS. 2 and 8, the closing body support fitting D is fixed with concrete screws d at both ends of the through hole B1 through which the long body C is inserted.

  Next, as shown in FIGS. 2, 4, and 9, the bag-containing fireproof block A <b> 1 and the bag-containing heat-expandable property with respect to the gap S between the through hole B <b> 1 and the long body C inserted through the through-hole B <b> 1. Using the boundary with the refractory sheet A2 as a mark, a gap S between the through hole B1 and the outer surface of the elongated body C inserted into the through hole B1 so that the mark side corresponds to the opening on the insertion side of the through hole B1. A large number of fire blocking holes A are filled.

  Specifically, at both ends of the through hole B1, a fire hole closing member corresponding to the gap S is formed in the gap S1 between the side plate C2b of the gantry C2 and the inner peripheral surface B1a of the through hole B1 facing the side plate C2b. A is filled in the fitted state.

  Next, in one gap S2 between the inner peripheral surface B1a on each long side of the through hole B1 and the long body C, which is opposed to the fire prevention hole closing body A, the thickness is the same and the length is the same. Three different fire hole closing bodies A2 are filled in the fitted state, and the other gap S3 is filled with two fire hole closing bodies A2 having the same thickness but different lengths.

  Next, the remaining subdivided gap S4 formed between the elongated body C in the through-hole B1 is filled with the thermally expandable refractory sheet 7 for compensation corresponding to the size of the gap S4. . Specifically, if the size of the gap S4 is small, the supplementary thermally expandable refractory sheet 7 is cut out in accordance with the size of the hole and filled in the inserted state. Corresponding to the size of S4, one or a plurality of laminated heat-expandable fireproof sheets 7 in a stacked state are transformed into a gap shape and filled into an insertion state.

  According to such a filling method, the large gap S (S1, S2, S3) is filled with the fire hole closing member A, and the small gap S (S4) is provided with the single supplementary thermally expandable fireproof sheet 7. By filling, the through hole can be easily and quickly closed.

  Moreover, all of the fire-blocking hole closing bodies A in the filled state correspond to the inner peripheral surface B1a of the through-hole heat-expandable fireproof sheet A1 and the outer surface of the long body C inserted through the through-hole B1. Both end surfaces A1a of the bag-containing fireproof blocks, which are the end portions on both sides in the closing body insertion direction, are in a state corresponding to the opening of the through hole B1.

  In the fire-protecting hole closing body A filled in the through hole B1 in this way, in the event of a fire, the heat-expandable fireproof sheet 2 is concentrated in the gap S between the long body C of the through-hole B1. And the heat-expandable sheet 7 for filling can be thermally expanded.

With such a configuration, the fireproof block 1 and the thermally expandable fireproof sheet 3 are individually packaged in the bags 2 and 4, thereby leaking small fragments of the fireproof block 1 or the thermally expandable fireproof sheet 3. In addition to being hard to come out, in the unlikely event of a fire, it has a function that does not disturb the thermal expansion of the heat-expandable fire-resistant sheet 3 while it is burned out. By wrapping the fireproof sheet 3, the boundary between the bag-containing fireproof block 1 and the bag-filled thermally expandable fireproof sheet 3 is used as a mark, and the mark side corresponds to the opening of the hole. By filling a large number of fire blocking obstructions A in an overlapping state so as to surround the circumference of the elongated body in the annular gap between the outer surface of the elongated body inserted through the bag, The heat input expandable fireproof sheet A1 is the inner peripheral surface of the through hole B1. In addition, it is possible to make the state corresponding to the outer surface of the elongated body C inserted through the through-hole B1, and also at the abutting portion between the side surfaces of the fire prevention hole closing body A filled in a parallel state. The inflatable fireproof sheet A2 can be brought into a corresponding state.
As a result, in the unlikely event that a fire is encountered, the thermal expansion properties of a large number of fire blocking obstructions A that fill the annular gap S between the through hole B1 and the long body C inserted through the through hole B1. The thermally expansible fireproof sheet 3 is thermally expanded while the bag 4 of the fireproof sheet A2 is burned out, and the outer surface of the long body C inserted through the through-hole B1 is securely pressed and subjected to such pressure contact. In the case of a pipe in which a thick synthetic resin layer is formed on the outer periphery of the central copper pipe, such as the air conditioning pipe C1 constituting the long body C of this embodiment, As a result of softening, the volume of the long body C is reduced, but the thermally expandable refractory sheet 3 corresponding directly to the long body C is thermally expanded toward the long body C. It is possible to replenish the decrease and delay the spread of fire, and in parallel Since the bag-filled heat-expandable fireproof sheet A2 is also located in the side portion that is abutted in the state, in the unlikely event of a fire, the bag body 4 of the bag-filled heat-expandable fireproof sheet A2 is thermally expanded while being burned out. The heat-resistant fireproof sheet 3 is thermally expanded, so that the intrusion of fire smoke from the butted portion can be reliably prevented.

[Second Embodiment]
FIGS. 10 and 11 show a second embodiment to which the present invention is applied. The parts different from the first embodiment will be described, the same components are denoted by the same reference numerals, and the details thereof will be omitted.
That is, in the second embodiment, the fire blocking hole A includes a fire-resistant block 1 mainly composed of a refractory material and a flexible thermally expandable fire-resistant sheet 3 mainly composed of a thermally expandable refractory material. The block 1 is wound with the end portions 1a on both sides of the closing body insertion direction exposed, and the thermally expandable fireproof sheet 3 and the fireproof block 1 are packaged in a flammable bag body 8. A mark 9 indicating the insertion direction is formed.

  The said mark 9 is formed corresponding to the edge part 1a of the obstruction body insertion direction both sides in a fireproof block, for example, printing of a character and an illustration, a symbol mark, coloring, sticking a sticker, a transparent film window, etc. Can be given.

  The bag body 8 has a bag capacity equivalent to the combined volume of the fireproof block 1 and the thermally expandable fireproof sheet 3, and changes the direction of the fireproof block 1 and the thermally expandable fireproof sheet 3 in the bag 8. It is packed in a restrained state that cannot be done.

  If it is such a structure, when it encounters an emergency fire in addition to the small piece of the fireproof block 1 or the heat-expandable fireproof sheet 3 being difficult to leak by being packaged by the bag body 8. Is used for forming the mark 9 indicating the insertion direction of the closing body, while having the function of not burning out and hindering the thermal expansion of the heat-expandable refractory sheet 3. By filling the clearance S between the through-hole B1 and the outer surface of the long body C inserted through the through-hole B1 so as to correspond to the opening of the through-hole B1, a large number of fire-protection hole closing bodies A are filled. The fireproof sheet 3 can be in a state corresponding to the inner peripheral surface of the through hole B1 and the outer surface of the elongated body C inserted through the through hole B1.

  Therefore, in the unlikely event that a fire is encountered, the thermally expandable fireproof sheet 3 of a large number of fire blocking obstructions A that fills the annular gap S between the through hole B1 and the elongated body C inserted through the through hole B1. The heat-expandable fireproof sheet 3 is thermally expanded while the bag body is burned out, and the outer surface of the long body C inserted through the through-hole B1 is securely pressed. In the case of a pipe in which a thick synthetic resin layer is formed on the outer periphery of the central copper tube, the volume of the long body is reduced as a result of being burned or softened by the synthetic resin layer due to fire heat. However, the heat-expandable fireproof sheet 3 that directly corresponds to the long body C thermally expands toward the long body C, so that the decrease is replenished and the fire spread is delayed. be able to.

  Moreover, since the end portion where the fireproof block is exposed corresponds to the mark, the fire hole closing body is definitely placed in the gap between the inner peripheral surface of the through hole and the outer surface of the long body inserted through the through hole. In addition to being able to fill, and with a large number of closed holes for fire prevention, marks can be seen at the opening of the through hole, so even if there is something wrongly filled, it is possible to distinguish mistakes at a glance. Can be corrected.

[Another embodiment]
1) In each of the above embodiments, the bag-containing fire-resistant block A1 and the bag-containing heat-expandable heat-resistant sheet A2 are fixed by the fixing means 6 made of a hot-melt adhesive, and the bag-containing heat-expandable fire-resistant sheet A2. Although the nonwoven fabric band 5 is wound around in a direction crossing the winding direction, the bag-containing fireproof block A1 and the bag-filled heat-expandable fireproof sheet A2 have been described as being bundled together. Not limited to this, the non-woven fabric band 5 is not used, and the fire-resistant hole blocking body A in which the bag-containing fire-resistant block A1 and the bag-containing heat-expandable heat-resistant sheet A2 are fixed by fixing means 6 made of a hot-melt adhesive. Even so, as shown in FIG. 12, the fireproof block 1 mainly composed of the refractory material is packed in the bag body 2 and the fireproof block A1 is mainly composed of the heat-expandable fireproof material. Thermally expansible fireproof sheet 3 Even if the bag-filled heat-expandable fireproof sheet A2 formed by filling the flammable bag body 4 is wound in a state where both end faces A1a of the bag-filled fireproof block A1 are exposed, the fireproof hole closing body is wound. Good.
In addition, in this other embodiment, the same code | symbol is attached | subjected to the component similar to each said embodiment, and the detail is abbreviate | omitted.

  2) In the above embodiment, the hole for fire prevention is closed in the gap S between the long body C composed of the piping group C1 such as the air conditioning piping group stretched on the gantry C2 and the through hole B1 through which the long body C is inserted. Although the example with which A is filled was demonstrated, this invention is not only this, The clearance gap between the elongate body C comprised only from piping groups, such as an air-conditioning piping group C1, and the through-hole B1 which penetrates this S may be filled with the fire-blocking hole closure A.

  3) In the above embodiment, the description has been made on the through-hole formed in the casing itself forming the fire prevention section. However, the through-hole formed by assembling the frame-shaped metal frame at the stage of forming the casing. May be targeted.

  4) In the said 1st Embodiment, although the bag body 2 of the bag-containing fireproof block A1 demonstrated the example comprised from the combustible nonwoven fabric, it is not restricted to this, For example, the bag body which consists of a nonflammable aluminum sheet You may be comprised from.

Simplified exploded perspective view showing a through hole, a long body, and a fire blocking hole closure Simplified exploded perspective view showing a through hole and a long body inserted through the through hole Explanatory drawing which shows the hole obstruction body for fire prevention of 1st Embodiment Longitudinal sectional view showing a closed hole for fire prevention filled in a gap between the through hole and the outer surface of the long body inserted through the through hole Front cross-sectional view of a hole closure for fire protection Cross-sectional side view of fire blocking hole closure Plan sectional view showing through hole and long body Flat cross-sectional view showing through-hole, elongated body, and closure body support fitting Flat cross-sectional view showing a state in which a clearance hole is filled in a gap between the through hole and the outer surface of the long body inserted through the through hole The simplified perspective view which shows the hole obstruction body for fire prevention of 2nd Embodiment Front cross-sectional view showing hole closure for fire protection The simplified perspective view which shows the hole obstruction body for fire prevention of another embodiment

Explanation of symbols

A Fire-resistant hole closing body A1 Bag fireproof block A1a End face A2 Bag heat-expandable fireproof sheet B Fireproof compartment B1 Through hole B1a Inner circumferential surface C Long body S Gap 1 Fireproof block 1a End part 2 Bag body 3 Thermal expansion Tensile fireproof sheet 4 Bag 5 Non-woven band (adhesion means)
6 Hot melt adhesive (fixing means)
8 Bag 9 Mark

Claims (6)

A fire hole closing body filled in a gap between the inner peripheral surface of the through-hole formed in the fire prevention compartment and the outer surface of the long body inserted through the through hole,
A fireproof block mainly composed of a refractory material is packed into a bag body, and a thermally expandable fireproof sheet mainly composed of a thermally expandable fireproof material is packed into a flammable bag body. A fire-resistant hole closing member in which a bag-containing thermally expandable fire-resistant sheet is wound in a state where both end faces of the bag-containing fire-resistant block are exposed.   The fire-protecting hole closing member according to claim 1, further comprising a fixing means for fixing the bag-containing thermally expandable fire-resistant sheet to the bag-containing fire-resistant block in a wound state.   The bag body of the bag-containing heat-expandable fire-resistant sheet is composed of a non-woven fabric containing a thermoplastic synthetic resin yarn, and the thermoplastic synthetic fiber extends in a direction crossing the winding direction of the bag-containing heat-expandable fire-resistant sheet. The fire-blocking hole closing body according to claim 2, wherein a belt-shaped nonwoven fabric band made of a nonwoven fabric containing yarn is wound, and the non-woven fabric band and both bag portions facing each other are fixed by fixing means.   The bag body of the bag-containing fireproof block and the bag-containing heat-expandable heat-resistant sheet is composed of a nonwoven fabric, and the bag portions facing each other in a wound state are fixed by a fixing means made of a hot melt adhesive. The hole closure body for fire prevention as described. A fire hole closing body filled in a gap between the inner peripheral surface of the through hole formed in the fire prevention compartment and the outer surface of the long body inserted through the through hole,
A flexible thermal expansion fireproof sheet mainly composed of a heat-expandable fireproof material is wrapped around a fireproof block mainly composed of a fireproof material in a state where both ends of the fireproof block are inserted in the closing body insertion direction. The fire-resistant hole closing body, in which the thermally expandable fire-resistant sheet and the fire-resistant block are packaged in a combustible bag, and a mark indicating the insertion direction of the closing body is formed on the packaging. 6. The fire-protecting hole closing member according to claim 5, wherein the mark is formed corresponding to both ends of the fire-resistant block on both sides of the closing member insertion direction.

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