JP2015036497A - Fire-preventing cut-off device and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire-preventing cut-off device that has a structure allowing relative displacement of piping and can maintain a sufficient cut-off function and fire-preventing function even if a water disaster and a fire both occur, and its construction method.SOLUTION: A fire-preventing cut-off device 10 includes: a sealing material 13 which is charged in a gap 19 between a sleeve 12 that piping 11 penetrates and the piping 11 to seal the gap 19; a fire-resistance heat-insulation material 16 having fire resistance performance and formed by combining together a first heat-insulation material 14 in a fixed shape arranged at an outer periphery of the sealing material and a second heat-insulation material 15 absorbing relative displacement of the first heat-insulation material 14; and a fixation part 21 which fixes the fire-resistance heat-insulation material 16 such that the fire-resistance heat-insulation material 16 covers an opening end face 18 of the sleeve 12 for fire prevention, and also insulates and shields the inside of the sleeve 12 from heat.

Description

  The present invention relates to a fire and water stoppage technique installed in a through hole of a pipe penetrating a wall or a floor.

In power plants, industrial plants, and the like, many through-holes that allow piping to pass through walls and floors are provided. These through-holes are usually structured to allow relative displacement to a certain extent so as to cope with vibrations caused by fluid passing through the piping, thermal expansion of the piping, and earthquakes.
This through-hole is required to take measures to ensure safety in the event of a disaster or accident, or to prevent the damage that has occurred.

  For example, it is necessary to take fire prevention measures to prevent the through-holes from becoming a fire spread route and spreading damage in the event of a fire. Taking a nuclear power plant as an example, if the building of the nuclear power plant is inundated, maintenance of the normal function of the electrical system will be hindered and secondary damage may occur.

  Since the through-holes provided in the walls of the building can also serve as a flooding path when flooding occurs, it is important to take sufficient measures against water leakage. Furthermore, a water disaster such as a tsunami, an earthquake disaster, or a fire may occur at the same time. Even in this case, it is necessary to take measures to maintain the water stop function and the fire prevention function.

  As a fire prevention measure for a sleeve used in a conventional power plant, there is a measure for filling a gap between the sleeve and the pipe with a fireproof material such as rock wool. In addition, as a measure against water stop, there is one that seals this gap with a sealing material for water stop, and has a high water stop function against tsunami and the like.

  However, each of them has only one of a fire prevention function and a water stop function. For example, when a water disaster and a fire occur simultaneously, it is impossible to prevent both of them from expanding at the same time. For example, a sealing material for water stopping loses adhesion or sealing property by heating and does not have a sufficient water stopping function.

  As a technique having both a fire prevention function and a water stop function, there is known a technique in which a boot rubber is wound around the opening end of a sleeve of a through hole and covered or a mortar is filled in the through hole. In addition, a technique using a filler in which a component having water swellability and a component having thermal expansibility are mixed and expands with respect to each of water immersion and heating has been proposed (for example, see Patent Document 1).

JP 2009-243106 A

  However, any of the conventional techniques has a structure that allows relative displacement of the piping, and has a problem that a sufficient water stop function and fire prevention function cannot be maintained even when a water disaster and a fire occur simultaneously. For example, if the through hole is filled with mortar, the mortar excessively restrains the pipe, and an excessive load is applied to the pipe when a relative displacement caused by thermal expansion, vibration, or earthquake of the pipe occurs.

  The present invention has been made in consideration of such circumstances, and has a structure that allows relative displacement of piping, and can maintain a sufficient water stop function and fire prevention function even when a water disaster and a fire occur simultaneously. It aims at providing a fire prevention water stop apparatus and its construction method.

  A fire and water stop device according to the present embodiment includes a sealing material that fills a gap between a sleeve penetrating a pipe and the pipe and seals the gap, and a fixed shape first arranged on the outer periphery of the pipe. A fireproof heat-insulating material having fire resistance in which a first heat-insulating material and a second heat-insulating material that absorbs relative displacement of the first heat-insulating material are combined, and the fire-resistant heat-insulating material covers the opening end surface and the outer periphery of the sleeve to prevent fire. And a fixing portion for fixing the refractory heat insulating material so as to insulate and shield the inside of the sleeve.

  According to the present invention, there is provided a fire and water stop device capable of maintaining a sufficient water stop function and fire preventive function even when a water disaster and a fire occur, and a construction method thereof, which allow a relative displacement of piping. .

(A) is side sectional drawing of the fire-proof water stop apparatus concerning 1st Embodiment, (B) is front sectional drawing in the II cross section of the fire-proof water stop apparatus of (A). (A) is side sectional drawing of the fire-proof water stop apparatus concerning 2nd Embodiment, (B) is front sectional drawing in the II-II cross section of the fire-proof water stop apparatus of (A). (A) Side surface sectional drawing of the fire-proof water stop apparatus concerning 3rd Embodiment, (B) is front sectional drawing in the III-III cross section of the fire-proof water stop apparatus of (A). (A) is the modification of the fire-proof water stop apparatus concerning 3rd Embodiment, (B) is front sectional drawing in the IV-IV cross section of the fire-proof water stop apparatus of (A). (A) Side surface sectional drawing of the fire-proof water stop apparatus concerning 4th Embodiment, (B) is front sectional drawing in the VV cross section of the fire-proof water stop apparatus of (A). (A) is the modification of the fire-proof water stop apparatus concerning 4th Embodiment, (B) is front sectional drawing in the VI-VI cross section of the fire-proof water stop apparatus of (A). The flowchart which shows the construction procedure of the fire prevention water stop apparatus concerning each embodiment.

  Hereinafter, embodiments will be described with reference to the accompanying drawings.

(First embodiment)
FIG. 1A is a side cross-sectional view of the fire and water stop device 10 according to the first embodiment, and FIG. 1B is a front cross-sectional view taken along the line II of FIG.
As shown in FIG. 1, the fire and water stop device 10 according to the first embodiment is filled with a gap 19 between the sleeve 12 penetrating the pipe 11 and the pipe 11 to seal the gap 19. 13 and the fixed-shaped first heat insulating material 14 disposed on the outer periphery and the second heat insulating material 15 that absorbs the relative displacement between the pipe 11 and the first heat insulating material 14 are combined with a fire resistant heat insulating material 16 having fire resistance. And a fixing portion 21 for fixing the refractory heat insulating material 16 so that the refractory heat insulating material 16 covers the opening end face 18 and the outer periphery of the sleeve 12 to prevent fire and to insulate and insulate the inside of the sleeve 12.

  The sealing material 13 fills a gap 19 between the sleeve 12 penetrating the pipe 11 and the pipe 11 to seal the gap 19. The sealing material 13 includes a sealing material 13a (13) filled in close contact with the inner peripheral surface of the sleeve 12 and the outer periphery of the pipe 11, and a back material 13b (13) serving as a support when the sealing material 13a is filled. Consists of

  The sealing material 13a prevents the flooding from expanding when the pipe 11 is flooded and the gap 19 becomes a flooding path. Various types of sealing material 13a have been known in the past, and any material having sufficient strength, adhesion, and sealing properties can be appropriately selected from these existing materials.

  Note that the sealing material 13a loses adhesion or sealing at a temperature of about 600 ° C. generally assumed at the time of a fire. Therefore, in order to maintain the water stop function even when a water disaster and a fire occur simultaneously, it is necessary not to transfer the heat of the flame to the sealing material 13a. Further, the back material 13b is preferably not firmly fixed to allow relative displacement between the pipe 11 and the sleeve 12, such as rock wool and glass wool.

  The refractory heat insulating material 16 is a combination of a fixed-shaped first heat insulating material 14 disposed on the outer periphery and a second heat insulating material 15 that absorbs relative displacement between the pipe 11 and the first heat insulating material 14. Both the first heat insulating material 14 and the second heat insulating material 15 have fire resistance.

  As the first heat insulating material 14, a material having a very high heat insulating property with a thermal conductivity of about 0.05 [W / m · K] or less at a temperature of about 600 ° C. assumed in a fire is suitably selected. . More preferably, a material having a thermal conductivity of 0.01 to 0.04 [W / m · K] at about 600 ° C. is selected as the first heat insulating material 14.

  The 1st heat insulating material 14 is shape | molded, for example in the cylindrical shape which makes an internal diameter the outer diameter of the piping 11, and in order to make construction to the piping 11 easy, it is halved. The fixed shape means that it does not have a function of absorbing the relative displacement of the pipe 11, and a fiber reinforced ceramic such as Microtherm (registered trademark) is suitably used for the first heat insulating material 14.

  Since the first heat insulating material 14 has such a very high heat insulating property, the first heat insulating material 14 is arranged around the pipe 11 where heat can easily enter the inside of the sleeve 12. That is, the first heat insulating material 14 is disposed on the outer periphery of the pipe 11 in order to prevent heat transfer from the pipe 11 having a high thermal conductivity to which the sealing material 13 is in close contact.

  The bidirectional length of the pipe 11 of the first heat insulating material 14 is designed to be long enough to prevent excessive heat transfer to the sealing material 13 in consideration of the thermal conductivity of the pipe 11 and the like. Further, the first heat insulating material 14 is preferably disposed so as to cover at least a part of the opening end surface 18 in order to prevent the flame from reaching the inside of the sleeve 12 and improve the heat insulating property. is there.

  For example, as shown in FIG. 1, at least a part of the opening end surface 18 can be covered by making the outer diameter of the first heat insulating material 14 on the opening end surface 18 side larger than the inner diameter of the opening end surface 18. Furthermore, if the outer diameter of the first heat insulating material 14 on the opening end face 18 side (that is, the sleeve 12 side) is equal to or larger than the outer diameter of the opening end face 18, the entire opening end face 18 can be covered. Such a shape of the first heat insulating material 14 may be integrally formed at the time of creation, or may be constituted by two first heat insulating materials 14 having different outer diameters. In addition, a cylinder of the first heat insulating material 14 whose inner diameter is increased only from the outside of the cylinder of the first heat insulating material 14 disposed in the pipe 11 to the portion of the opening end surface 18 may be disposed.

  Since the first heat insulating material 14 is used in combination with the second heat insulating material 15, the opening end face 18 and the outer periphery of the sleeve 12 may not be completely covered only by the first heat insulating material 14. However, since the 1st heat insulating material 14 has low heat conductivity compared with the 2nd heat insulating material 15, and has high heat insulation, it can insulate efficiently by using in the place where heat | fever intrusion tends to occur.

  That is, by using the 1st heat insulating material 14 in the place where heat | fever intrusion tends to occur, a volume can be reduced without impairing heat insulation, and the workability | operativity of the fire-proof water stop apparatus 10 can be improved.

Various combinations and arrangements of the first heat insulating material 14 and the second heat insulating material 15 that absorb the relative displacement of the first heat insulating material 14 are conceivable.
In 1st Embodiment, the 2nd heat insulating material 15 encloses the elastic heat insulating material in the cloth which consists of heat resistant fibers, such as a silica type or an alumina silica type, and made it into a futon shape.

  This heat insulating material is, for example, a cotton-like heat insulating material such as rock wool, silica-based heat-resistant fiber, or alumina silica-based heat-resistant fiber. In order to prevent the enclosed heat insulating material from being biased, it may be devised to sew with a heat-resistant thread from above the outer skin at an appropriate interval. Further, the second heat insulating material 15 is not limited to a futon-like one, and may be a sponge-like or blanket-like one.

  The thermal conductivity of the second heat insulating material 15 is about 0.05 to 0.25 [W / m · K] at a temperature of about 600 ° C. assumed at the time of a fire, and the thermal conductivity is higher than that of the first heat insulating material 14. A material having a high thermal insulation property even at a high temperature is preferable. More preferably, a material having a thermal conductivity of 0.04 to 0.14 [W / m · K] at 400 to 700 ° C. is selected as the second heat insulating material 15.

  The fixing portion 21 fixes the refractory heat insulating material 16 so that the refractory heat insulating material 16 covers the opening end surface 18 of the sleeve 12 to prevent fire and insulate and heat shield the inside of the sleeve 12. The fixing | fixed part 21 is a band which clamp | tightens and fixes the fireproof heat insulating material 16 to the sleeve 12 from the outer side, such as a heat resistant glass fiber or a stainless wire, for example.

  In addition to a large relative displacement due to an external force due to an earthquake or tsunami, the pipe 11 is routinely subjected to relative displacement due to vibration or deformation due to expansion when a high-temperature fluid flows through the inside.

  That is, if the opening end surface 18 is fixedly restrained only by the fixed-shaped first heat insulating material 14, there is a possibility that the pipe 11 or the sleeve 12 may be deteriorated or destroyed by relative displacement. That is, in the present embodiment, the second heat insulating material 15 does not have the low thermal conductivity (high heat insulating property) as the first heat insulating material 14, but the relative relationship between the pipe 11 and the first heat insulating material 14. A material capable of absorbing a large displacement is used.

  Further, if the opening end surface 18 of the sleeve 12 is positioned outside the sleeve side end portion of the first heat insulating material 14 due to the relative displacement of the first heat insulating material 14, sufficient heat insulation cannot be performed. Therefore, the first heat insulating material 14 is wound around the second heat insulating material 15 together with the sleeve 12, and the portions of the first heat insulating material 14 and the sleeve 12 are fixed by the fixing portion 21 around the second heat insulating material 15. .

  Although it is smaller than the pipe 11, since heat also enters from the sleeve 12 in the event of a fire, the second heat insulating material 15 covers the entire outer periphery of the sleeve 12. Moreover, it becomes possible to ensure the fire and water stop function with respect to the both sides of a wall by constructing the fire / water stop device 10 on both sides of the wall. By specifying or combining the materials, thicknesses, and shapes of the first heat insulating material 14 and the second heat insulating material 15 according to the fire resistance requirements, it is possible to meet various fire resistance requirements.

  Next, the construction procedure of the fire and water stop device 10 according to the first embodiment will be described with reference to the flowchart of FIG. First, the back material 13b is installed (step S11), and the gap 19 between the sleeve 12 and the pipe 11 penetrating the pipe 11 is filled with the sealing material 13a to seal the gap 19 (step S12).

Next, the refractory heat insulating material 16 is installed on the opening end face 18 (step S13). In step S <b> 13, first, the pair of first heat insulating materials 14 that are halved are disposed on the outer periphery of the pipe 11 in the vicinity of the opening end surface 18.
And the combination of the 2nd heat insulating material 15 which absorbs the relative displacement of the 1st heat insulating material 14 according to the fire-proof request | requirement of the fire prevention water stop apparatus 10 is selected and arrange | positioned.

  A fireproof heat insulating material 16 that combines the first heat insulating material 14 and the second heat insulating material 15 covers the opening end surface 18 and the outer periphery of the sleeve 12 to prevent fire, and also heat-insulates and heat-insulates the inside of the sleeve 12. The material 16 is fixed (step S14), and the construction is finished.

  As described above, according to the fire and water stop device 10 according to the first embodiment, the open end face 18 and the outer periphery of the sleeve 12 are covered with the fireproof heat insulating material 16 in which the first heat insulating material 14 and the second heat insulating material 15 are combined. In addition, it has a fire prevention performance and prevents heat transfer to the sealing material 13, thereby permitting relative displacement of the pipe 11, and has a sufficient water stop function and fire prevention function even in the event of a water disaster and fire. Can be maintained.

(Second Embodiment)
Fig. 2 (A) is a side sectional view of the fire and water stop device 10 according to the second embodiment, and Fig. 2 (B) is a front sectional view in the II-II section of Fig. 2 (A).

  As shown in FIG. 2, in the fire and water stop device 10 according to the second embodiment, the first heat insulating material 14 includes a pipe covering portion 14 a (14) that covers the pipe 11 and a sleeve covering portion that covers the sleeve 12. 14b (14).

  Also in the first embodiment, the first heat insulating material 14 can be composed of a plurality. In the second embodiment, the sleeve covering portion 14 b constituting the first heat insulating material 14 covers the sleeve 12 by the fixing portion 21 and is fixed to the sleeve 12. The pipe covering portion 14a having a cylindrical fixed shape is fixed to the pipe 11 as a pair of halves.

  The pipe covering portion 14a is, for example, a cover plate provided with a hole through which the pipe 11 passes and having an outer diameter that is larger than the inner diameter of the sleeve 12 and smaller than the outer diameter, covers the pipe 11 and opens the open end face 18 of the sleeve 12. Covering at least a part of. That is, a cylindrical space exists between the pipe covering portion 14 a and the sleeve covering portion 14 b of the first heat insulating material 14.

After the first heat insulating material 14 is disposed, the second heat insulating material 15 covers the first heat insulating material 14 and absorbs the relative displacement of the pipe 11 and the pipe covering portion 14 a of the first heat insulating material 14.
By fixing the outer periphery of the sleeve covering portion 14b together with the second heat insulating material 15 with the band-shaped fixing portion 21, the relative displacement of the pipe covering portion 14a of the pipe 11 and the first heat insulating material 14 due to heat transfer or earthquake is reduced. The 1st heat insulating material 14 is restrained, accept | permitting.

  That is, the pipe covering portion 14 a of the first heat insulating material 14 is not completely fixed by the fixing portion 21, and the fire and water stop device 10 as a whole allows relative displacement of the pipe 11. Since the sleeve 12 is covered with the first heat insulating material 14 having high heat insulating properties, the second heat insulating material 15 may not further cover the entire sleeve 12 from the outside of the first heat insulating material 14.

  The first heat insulating material 14 is covered with the sleeve covering portion 14b and fixed to the sleeve 12, and the second heat insulating material 15 absorbs the relative displacement between the first heat insulating materials 14. Since 2 embodiment becomes the same structure and construction procedure as 1st Embodiment, the overlapping description is abbreviate | omitted. Also in the drawings, portions having a common configuration or function are denoted by the same reference numerals, and redundant description is omitted.

  Similarly to the first embodiment, the combination of the material, thickness, and shape of the first heat insulating material 14 and the second heat insulating material 15 can be appropriately changed according to various fire resistance requirements. For example, the first heat insulating material 14 can be further divided into a plurality of parts to the extent that the second heat insulating material 15 can absorb the relative displacement and maintain the shape.

Thus, according to the fire and water stop apparatus 10 concerning 2nd Embodiment, the effect similar to 1st Embodiment can be acquired.
Furthermore, by providing the sleeve covering portion 14b, it is possible to reduce the volume without reducing the heat insulation, and it is possible to improve the workability with respect to the pipe 11 arranged in a narrow place.

In addition, the opening end face 18 is sealed with the second heat insulating material 15 in addition to the pipe covering portion 14 a, thereby preventing heat from entering through between the pipe covering portions 14 a due to the relative displacement of the pipe 11. can do.
In the present embodiment, the pipe covering portion 14a of the first heat insulating material 14 fixes a half of the pair to the pipe 11, and a cylindrical through hole is provided between the pipe covering portion 14a and the sleeve covering portion 14b. Although the pipe covering portion 14a is fixed to the sleeve covering portion 14b, or the pipe covering portion 14a and the sleeve covering portion 14b are integrally formed, the outer periphery of the pipe 11 and the inner periphery of the pipe covering portion 14a are configured. It is good also as a structure which provides a cylindrical space part (clearance) between. Further, these cylindrical spaces (clearance) may be filled with a heat-resistant caulking material 15a.

(Third embodiment)
FIG. 3A is a side cross-sectional view of the fire and water stop device 10 according to the third embodiment, and FIG. 3B is a front cross-sectional view taken along the line III-III of FIG.

In the third embodiment, the second heat insulating material 15 is bonded to the first heat insulating material 14 and heat-resistant coking material 15a (15) that absorbs relative displacement, and the caulking material 15a is disposed by being expanded by heating. And an expansion heat insulating material 15b (15) that closes the gap.
By providing both the caulking material 15a and the expansion heat insulating material 15b, the second heat insulating material 15 that absorbs the relative displacement of the first heat insulating material 14 as a whole is obtained. Both the caulking material 15a and the expansion heat insulating material 15b have fire resistance.

And the 2nd heat insulating material 15 is fixed to the wall surface 24 which the sleeve 12 penetrates, as FIG. 3 shows.
Although not shown, the second heat insulating material 15 may be wound around the sleeve 12 and fixed, and is appropriately selected in consideration of the difference in dimensions between the first heat insulating material 14 and the sleeve 12.

  The expansion heat insulating material 15b is, for example, a heat insulating sheet having adhesiveness on one side that expands several times when heated to about 300 ° C. to 600 ° C. assumed in a fire. A material having a high heat insulating property with a thermal conductivity of about 0.06 to 0.2 [W / m · K] at a temperature of about 600 ° C. assumed in a fire is suitably selected for the expansion heat insulating material 15b. .

  More preferably, a material having a thermal conductivity of 0.04 to 0.09 [W / m · K] at 400 ° C. to 700 ° C. is selected as the expansion heat insulating material 15b. In the event of a fire, the space where the caulking material 15a is expanded is closed, and the inside of the sleeve 12 is insulated.

  The caulking material 15a is disposed between the first heat insulating material 14 and the expansion heat insulating material 15b fixed to the pipe 11 with a band-shaped fixing portion 21. The caulking material 15a absorbs the relative displacement between the first heat insulating material 14 and the expansion heat insulating material 15b caused by vibration of the pipe 11 at room temperature and bonds them together. The caulking material 15a prevents the intrusion of the flame through the gap and provides heat insulation and heat insulation until the expansion heat insulating material 15b starts to expand to about 300 ° C.

  The 1st heat insulating material 14 is shape | molded in the cup shape provided with the hole which penetrates the piping 11, and is halved for construction. That is, the first heat insulating material 14 made of a pair of halves is fixed to the pipe 11 and covers the open end including the open end face 18 of the sleeve 12, and the wall surface 24 through which the sleeve 12 passes is transparent. To face each other. As described above, the caulking material 15a and the expansion heat insulating material 15b constituting the second heat insulating material 15 are disposed between the holes.

  The material of the 1st heat insulating material 14 is the same as that of the 1st heat insulating material 14 of 1st Embodiment. In addition, in order to prevent heat transfer from the pipe 11 more effectively, the pipe 11 protruding from the first heat insulating material 14 is further appropriately provided with a cylinder of the first heat insulating material 14 of the first embodiment. Can do.

  In the present embodiment, the expansion heat insulating material 15 b of the second heat insulating material 15 is provided on the sleeve 12 or the wall surface 24, and the heat-resistant caulking material 15 a is filled between the expansion heat insulating material 15 b and the first heat insulating material 14. However, the expansion heat insulating material 15b may be provided on the surface facing the wall surface 24 of the first heat insulating material 14, and the space between the expansion heat insulating material 15b and the wall surface 24 may be filled with the heat resistant caulking material 15a. .

  4A is a modified example of the fire and water stop device 10 according to the third embodiment, and FIG. 4B is a front sectional view of the fire and water stop device 10 in FIG. 4A taken along the line IV-IV. is there. As shown in FIG. 4, the second heat insulating material 15 may be wound around the pipe 11. In this case, the first heat insulating material 14 is fixed to the sleeve 12 by the fixing portion 21, and the first heat insulating material 14 is absorbed by the relative displacement of the pipe 11 between the inner peripheral surface of the first heat insulating material 14 and the outer periphery of the pipe 11. Two heat insulating materials 15 are provided.

  Here, in the example of FIG. 4, the expansion heat insulating material 15 b of the second heat insulating material 15 is wound around a portion of the outer periphery of the pipe 11 facing the first heat insulating material 14, and the outer periphery of the expansion heat insulating material 15 b and the first heat insulating material 14 are wound. Although heat-resistant caulking material 15a is filled between the inner periphery of the first heat insulating material 14 and the heat insulating caulking material 15a, the expansion heat insulating material 15b is wound around the inner peripheral surface of the first heat insulating material 14 and the piping 11 It is good also as a structure filled with the heat-resistant caulking material 15a between the permeation | transmission between the outer periphery.

  The third embodiment has the same structure as that of the first embodiment except that the second heat insulating material 15 is composed of the expansion heat insulating material 15b and the heat-resistant caulking material 15a. Also in the drawings, portions having a common configuration or function are denoted by the same reference numerals, and redundant description is omitted.

Next, the construction procedure of the fire and water stop device 10 according to the third embodiment will be described with reference to the flowchart of FIG.
First, the back material 13b is installed (step S11), and the gap 19 between the sleeve 12 and the pipe 11 penetrating the pipe 11 is filled with the sealing material 13a to seal the gap 19 (step S12).

Next, the refractory heat insulating material 16 is installed (step S13). In step S <b> 13, first, the expansion heat insulating material 15 b is disposed on the sleeve 12 or the wall surface 24.
Next, the halved first heat insulating material 14 is arranged on the outer periphery of the pipe 11 in the vicinity of the opening end surface 18 by the fixing portion 21.

And the caulking material 15a is arrange | positioned and adhere | attached between the 1st heat insulating material 14 and the 2nd heat insulating material 15, and the inside of the sleeve 12 is heat-insulated and heat-shielded (step S14), and construction is complete | finished.
In addition, the expansion heat insulating material 15b may be wound around the pipe 11, and in that case, the first heat insulating material 14 is disposed in the pipe 11 via the expansion heat insulating material 15b and the caulking material 15a.

  As described above, according to the fire and water stop device 10 according to the third embodiment, in addition to the same effects as those of the first embodiment, the first heat insulating material 14 is an integrally molded product. Good sex.

  Moreover, since it is an integral type product that can be easily fixed and covers the sleeve 12 in addition to the opening end face 18 and the pipe 11, the second heat insulating material in the form of a futon that causes the same effect as the first embodiment is maintained. 15 can be made unnecessary.

(Fourth embodiment)
FIG. 5A is a side sectional view of the fire and water stop device 10 according to the fourth embodiment, and FIG. 5B is a front sectional view taken along the line VV in FIG.

  In the fire and water stop device 10 according to the fourth embodiment, as shown in FIG. 5, the fixing portion 21 is a fixing jig 34 installed on the wall surface 24 through which the sleeve 12 penetrates. The opening end face 18 is covered together with the fixing jig 34.

  Similarly to the third embodiment, the second heat insulating material 15 has a caulking material 15a that adheres to the first heat insulating material 14 and absorbs relative displacement, and a space between the caulking material 15a that is expanded by heating and disposed. And an expansion heat insulating material 15b to be sealed.

  The fixing portion 21 is attached to the pipe 11 so as to be detachable with a bolt 35 or the like. Even after the first heat insulating material 14 is arranged, the fixing jig 34 can be attached and detached. In other words, by changing the fixing jig 34 together, it becomes easy to change the level of heat insulation, heat insulation, or fire resistance.

By the fixing jig 34, the distance from the flame to the sealing material 13 can be increased, and the thermal influence of the fire on the sealing material 13 can be reduced. Further, the fixing jig 34 that is no longer necessary due to a design change of the pipe 11 can be reused on the other open end face 18.
The fixing jig 34 preferably has fire resistance and heat insulation.

FIG. 6A is a modified example of the fire and water stop device 10 according to the fourth embodiment, and FIG. 6B is a front cross-sectional view of the fire and water stop device 10 in FIG. is there.
As FIG. 6 shows, the 2nd heat insulating material 15 may be wound around the piping 11 similarly to 3rd Embodiment. In this case, the first heat insulating material 14 is fixed to the sleeve 12 by the fixing portion 21 and is installed in the pipe 11 via the second heat insulating material 15.

  Since the fourth embodiment has the same structure and construction procedure as those of the third embodiment except that the fixing jig 34 is provided, the redundant description is omitted. Also in the drawings, portions having a common configuration or function are denoted by the same reference numerals, and redundant description is omitted.

However, the step (step S13) of installing the refractory heat insulating material 16 in the construction procedure is replaced with a step of arranging the halved first heat insulating material 14 on the outer periphery of the pipe 11 in the vicinity of the opening end surface 18 by the fixing portion 21. Thus, a step of fixing the fixing jig 34 to the pipe 11 with bolts 35 and the step of arranging the first heat insulating material 14 on the outer surface of the fixing jig 34 are added.
The first heat insulating material 14 can be replaced with a spray type or a troweled heat insulating material.

  Thus, according to the fire and water stop device 10 according to the fourth embodiment, in addition to the same effect as the first embodiment, by increasing the distance from the flame to the sealing material 13, The thermal effect of fire can be reduced. Furthermore, since the fixing jig 34 is attached to the piping 11 and attached, the stability at the time of fixing is high, and the thickness of the first heat insulating material 14 can be increased to improve the fire resistance and heat insulating properties.

  According to the fire and water stop device 10 of at least one of the embodiments described above, the opening end face 18 is covered with the fire resistant heat insulating material 16 that is a combination of the first heat insulating material 14 and the second heat insulating material 15, and has a fire resistance performance and is sealed. By preventing heat transfer to the stopper 13, the structure allows the relative displacement of the pipe 11, and it is possible to maintain a sufficient water stop function and fire prevention function even when a water disaster and a fire occur simultaneously. .

  In addition, by providing the sealing material 13 and the fireproof heat insulating material 16 separately, various devices for heat insulation can be devised without being strongly limited by the type of the sealing material 13. And the restriction | limiting regarding the fire resistance of the sealing material 13 is eased by heat-insulating the inside of the sleeve 12 with the fire-resistant heat insulating material 16 which has high heat insulation, and the choice of the sealing material 13 increases.

Although several embodiments have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention.
These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention.
These embodiments and modifications thereof are included in the scope of the invention and the scope of the gist thereof, and are also included in the scope of the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 10 ... Fire and water stop apparatus, 11 ... Piping, 12 ... Sleeve, 13 (13a, 13b) ... Sealing material (sealing material, back material), 14 (14a, 14b) ... 1st heat insulating material (piping covering part, sleeve) (Covering portion), 15 (15a, 15b) ... second heat insulating material (caulking material, expansion heat insulating material), 16 ... fireproof heat insulating material, 18 ... open end surface, 19 ... gap, 21 ... fixed portion, 24 ... wall surface, 34 ... Fixing jig, 35 ... bolt.

Claims (7)

A sealing material that fills a gap between the sleeve penetrating the pipe and the pipe and seals the gap;
A fireproof heat insulating material having fire resistance in which a first heat insulating material having a fixed shape disposed on the outer periphery of the pipe and a second heat insulating material that absorbs relative displacement between the pipe and the first heat insulating material are combined.
And a fixing part for fixing the fireproof heat insulating material so that the fireproof heat insulating material covers the opening end face and the outer periphery of the sleeve. 2. The fire and water stop device according to claim 1, wherein the first heat insulating material has a lower thermal conductivity than the second heat insulating material. 3. The fire and water stop device according to claim 1, wherein the first heat insulating material covers at least a part of an opening end surface of the sleeve. The first heat insulating material includes at least a pipe covering portion that covers the pipe;
A sleeve covering portion covering the sleeve, and
The said 2nd heat insulating material absorbs the said relative displacement of the said piping and the said 1st heat insulating material by coat | covering the said 1st heat insulating material, The any one of Claims 1-3 characterized by the above-mentioned. The fire and water stop device described. The first heat insulating material is fixed to the sleeve and arranged around the pipe so as to have a clearance between the pipe and the first heat insulating material,
The second heat insulating material is wound around the perforated portion of the outer periphery of the pipe or the inner peripheral surface of the first heat insulating material and expands by heating, and the gap between the pipe and the first heat insulating material. Expansion insulating material that closes
5. The coking material according to claim 1, wherein the caulking material is disposed between the through-holes of the expansion heat insulating material and the first heat insulating material and absorbs the relative displacement of the pipe. A fire and water stop device as described in 1. The first heat insulating material is fixed to the pipe and covers the open end of the sleeve, and is disposed so as to face the wall surface through which the sleeve penetrates,
The second heat insulating material is fixed to at least one of the sleeve, a wall surface through which the sleeve passes, and the first heat insulating material, and expands by heating to close the gap between the wall surface and the first heat insulating material. 2. An expansion heat insulating material, and a caulking material that is disposed between the expansion heat insulating material and the first heat insulating material and absorbs relative displacement between the pipe and the first heat insulating material. The fire and water stop apparatus according to any one of claims 1 to 4. Filling a gap between a sleeve penetrating a pipe and the pipe to seal the gap;
Arranging a first heat-insulating material having a fixed shape on the outer periphery of the pipe;
Combining a second heat-insulating material that absorbs relative displacement of the first heat-insulating material into a refractory heat-insulating material;
Fixing the refractory heat insulating material so that the refractory heat insulating material covers the opening end surface and the outer periphery of the sleeve.

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