JP2019005326A - Flame-shielding device of pipe-penetrating part - Google Patents

Abstract

To provide a flame-shielding device of a pipe-penetrating part which can tightly cover an opened pipe-penetrating part in the event of fire disaster, and which does not cover an inflammable pipe by a self-weight of a structure covering the opening at a normal time.SOLUTION: The present invention includes: a support steel material 16 that sandwiches a pipe-penetrating part 6 of a wall 1 from both sides in a horizontal direction; and a non-inflammable cover mechanism 14 having at least two non-inflammable covers 10, a roller 11, and a meltable stopper 19. The support steel material 16 includes a guide 15 extending in a vertical direction. The non-inflammable covers 10 are connected to each other in a vertical direction. A non-inflammable covers 10a is fixed to the support steel material 16, and a non-inflammable cover 10b is connected to the roller 11. The roller 11 is positioned in the guide 15. In the meltable stopper 19, at a normal time, a meltable member supports the roller 11 above the pipe-penetrating part 6. In the event of fire disaster, the meltable member melts or burns, the roller 11 moves downward below the pipe-penetrating part 6, and the non-inflammable covers 10 cover the pipe-penetrating part 6.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a flame shield device that shuts off a flame when a fire occurs with respect to a pipe penetration part in which a pipe penetrates a boundary part of a partition such as a wall, a floor, and a ceiling.

  In a plant, piping may pass through boundaries between partitions such as walls, floors, and ceilings. Plants typified by nuclear power plants and chemical plants are equipped with flammable piping such as FRP piping. If the flammable piping passes through walls, floors, or ceilings, the flammable piping is used in the event of a fire. It may disappear due to combustion or melting, and the pipe penetration (pipe penetration) may open. If flammable piping passes through the wall, floor, or ceiling that partitions the fire compartment, the opening must be closed because the fire penetrates the fire compartment through the opening when the pipe penetration opens. There is.

  Patent Document 1 describes a penetration part fire prevention device that can prevent the spread of fire to different fire prevention sections as an example of a conventional device for closing a pipe penetration part that is opened when a fire occurs. In the penetration part fire prevention device described in Patent Document 1, the non-combustible material cover is supported by the flammable piping at the normal time when the fire does not occur. The material cover is in close contact with the end of the sleeve that surrounds the periphery of the pipe penetration, protecting the opened pipe penetration from fire and preventing the spread of fire to adjacent compartments.

Japanese Patent Laying-Open No. 2015-128489

  In the penetration part fire prevention device described in Patent Literature 1, the non-combustible material cover is supported by the combustible piping in a normal time when no fire has occurred. For this reason, combustible piping has the subject that the dead weight of a nonflammable material cover is directly applied at the normal time, and is unpreferable on seismic evaluation. In addition, when a fire breaks out, it is not always possible to cover the pipe penetration part where the non-combustible material cover is opened without gaps due to hot air, etc., and it is also unclear whether the non-combustible material cover reliably covers the opening part without gaps. is there.

  The purpose of the present invention is to cover the open pipe penetration part without any gaps in the event of a fire, and to prevent the self-weight of the structure covering the opening from being applied to the flammable pipes during normal periods when no fire has occurred. Is to provide a flame barrier device.

  The flame shield device for a pipe penetration portion according to the present invention can have the following configuration. A pair of supporting steel members provided on the wall, sandwiching from both sides in the horizontal direction, a pipe penetration part, which is a rod-like member and is a part through which the flammable pipe of the plant wall penetrates, and at least two incombustible material covers And a non-combustible material cover mechanism comprising at least one pair of rollers and a pair of meltable stoppers. Each of the pair of supporting steel members includes a guide that is a groove portion that is provided on the wall in the length direction along the vertical direction and extends in the vertical direction. The non-combustible material cover is made of a steel plate and is connected to each other in the vertical direction. Of the non-combustible material covers, the non-combustible material cover located at the top is fixed to a pair of the supporting steel materials, and a pair of the rollers is connected to each of the other non-combustible material covers. Yes. The roller is located in the guide of the support steel. Each of the pair of fusible stoppers includes a fusible member, and in a normal time when no fire has occurred, the fusible member is at the bottom of each of the guides of the pair of supporting steel materials. The said roller is supported above the said piping penetration part. In the normal time, the non-combustible material cover mechanism is positioned above the pipe penetrating portion, and is folded and held at a connection portion between the non-combustible material covers so that the non-combustible material cover protrudes from the wall. ing. When a fire occurs, the meltable member is melted or burned out, and the roller supported by the meltable member at the normal time moves in the guide below the pipe penetrating portion, and the normal The non-combustible material cover mechanism that is sometimes folded extends downward, and the non-combustible material cover covers the pipe penetration portion.

  The flame shield device for a pipe penetration portion according to the present invention can have the following configuration. A pair of supporting steel members provided on the surface, sandwiching from both sides in the horizontal direction a pipe penetrating portion which is a rod-shaped member and is a portion through which combustible piping on the floor or ceiling surface of the plant penetrates; A non-combustible material cover, a non-combustible material cover mechanism comprising at least one pair of rollers and a pair of meltable stoppers. Each of the pair of support steel materials includes guides that are grooves that extend in the length direction at different positions in the height direction at both ends in the length direction. The non-combustible material cover is made of a steel plate and is connected to each other in the length direction of the support steel material. Of the non-combustible material covers, the non-combustible material cover located at the top is fixed to a pair of the supporting steel materials, and a pair of the rollers is connected to each of the other non-combustible material covers. Yes. The roller is located in the guide of the support steel. Each of the pair of fusible stoppers includes a fusible member, and in a normal time when no fire has occurred, the fusible member is at the bottom of each of the guides of the pair of supporting steel materials. The said certain roller is supported by the upper end side of the said supporting steel material rather than the said piping penetration part. At the normal time, the non-combustible material cover mechanism is located on the upper end side of the support steel material with respect to the pipe penetrating portion, and the non-combustible material covers are connected to each other so that the non-combustible material cover protrudes from the surface. Folded and held. In the event of a fire, the fusible member melts or burns out, and the roller supported by the fusible member at the normal time moves in the guide to the lower end side of the supporting steel material from the pipe penetration part. The non-combustible material cover mechanism that is folded at the normal time extends to the lower end side of the support steel material, and the non-combustible material cover covers the pipe penetration portion.

  According to the present invention, in the event of a fire, the open pipe penetration can be covered without any gaps, and in normal times when there is no fire, the weight of the structure covering the opening does not hit the flammable pipe. A flame shield device can be provided.

It is a figure which shows the structure at the time of the normal time when the flame-shielding apparatus of the piping penetration part by Example 1 of this invention saw the flame-shielding apparatus from the direction which goes to a wall, and the fire does not generate | occur | produce. It is a figure which shows the structure at the time of fire outbreak of the flame shield apparatus of the piping penetration part by Example 1 of this invention which looked at the flame shield apparatus from the direction which faces a wall. It is a figure which shows the structure of the normal time where the fire has not generate | occur | produced seeing from the centerline of the combustible piping of the flame shield apparatus of the piping penetration part by Example 1 of this invention. It is a figure which shows the structure at the time of fire outbreak of the flame shield apparatus of the pipe penetration part by Example 1 of this invention seen from the centerline of combustible piping. It is a figure which shows another structure of the normal time where the fire has not generate | occur | produced, seeing the flame shield from the direction which goes to a wall of the flame shield of the pipe penetration part by Example 1 of this invention. It is a figure which shows the structure at the time of the normal time where the flame-shielding apparatus with which the flame-shielding apparatus of the pipe penetration part by Example 2 of this invention is provided seen from the direction which goes to the wall toward the wall. It is a figure which shows the structure at the time of fire outbreak of the meltable stopper with which the flame shield apparatus of the piping penetration part by Example 2 of this invention is equipped seeing the flame shield apparatus from the direction which goes to a wall. In Example 2 of this invention, it is a figure which shows the meltable stopper provided in support steel material, and is the figure which looked at the flame-shielding apparatus from the upper direction at the normal time when the fire has not generate | occur | produced. It is a figure which shows the structure at the time of the normal time where the fire has not generate | occur | produced seeing from the centerline of the combustible piping of the flame shield apparatus of the piping penetration part by Example 3 of this invention. It is a figure which shows the structure at the time of fire outbreak of the flame shield apparatus of the pipe penetration part by Example 3 of this invention seen from the centerline of combustible piping. It is a side view which shows the structure of the flame shield apparatus of the piping penetration part installed in the floor by Example 4 of this invention.

  In plants (for example, nuclear power plants and chemical plants) equipped with flammable piping (for example, FRP piping), if the flammable piping penetrates the wall, floor, or ceiling that partitions the fire prevention compartment, The combustible pipe may burn or melt and disappear, the pipe penetration (piping penetration) may open, and a fire may cross the fire protection compartment through this opening. The flame shield device for a pipe penetration portion according to the present invention automatically covers this opening portion and shuts off the flame when a fire occurs.

  The flame-shielding device for a pipe penetration portion according to the present invention includes a pair of supporting steel materials that are rod-like members provided on the wall, floor, or ceiling surface with the pipe penetration portion from both sides in the horizontal direction, and at least two non-combustible materials. A non-combustible material cover mechanism comprising a material cover, at least one pair of rollers, and a pair of meltable stoppers. Each of the support steel materials includes guides that are grooves that extend in the length direction at different positions in the height direction at both ends in the length direction. The non-combustible material cover is made of a steel plate and is connected to each other in the length direction of the support steel material. Among the non-combustible material covers, the non-combustible material cover located at the top is fixed to a pair of support steel materials, and a pair of rollers is connected to each of the remaining non-combustible material covers. The roller is located in the support steel guide. Each of the pair of fusible stoppers includes a fusible member, and in a normal time when no fire has occurred, the fusible member has a roller at the bottom of each guide of the pair of supporting steel materials. It supports on the upper end side of the supporting steel material from the pipe penetration part. In normal times when there is no fire, the non-combustible material cover mechanism is located on the upper end side of the supporting steel material from the pipe penetration, and the non-combustible material cover protrudes from the wall, floor, or ceiling surface. The cover is folded and held at the connecting portion. In the event of a fire, the fusible member melts or burns out due to an increase in ambient temperature, and the roller supported by the fusible member during normal operation causes gravity to flow in the guide on the lower end side of the supporting steel material from the pipe penetration. The non-combustible material cover mechanism that has been moved by the action and has been normally folded extends to the lower end side of the supporting steel material, and the non-combustible material cover covers the pipe penetration portion.

  The flame-shielding device for a pipe penetration portion according to the present invention is an external power source even if a fire that causes the loss of flammable piping occurs in a plant where the flammable piping passes through walls, floors, or ceilings that partition different fire prevention sections. With the static drive that does not use, it is possible to automatically cover the opening formed by the disappearance of the flammable piping (opened pipe penetrating portion) without any gaps to prevent the spread of fire. Since the non-combustible material cover and steel material are arranged around the pipe penetration part, the opening can be reliably covered with the non-combustible material cover and steel material without any gaps in the event of a fire. The fire spread from the opening can be reliably prevented. Also, in normal times when there is no fire, the structure that covers the opening of the incombustible material cover or the like is not applied to the flammable piping, so it is a preferable structure for seismic evaluation of the piping, so that no load is applied to the piping. It is not necessary to additionally install a support member for the purpose.

  Hereinafter, a flame shield device for a pipe penetration portion according to an embodiment of the present invention will be described with reference to the drawings.

  In Example 1 of the present invention, an example will be described in which a flammable pipe passes through a wall that partitions a fire prevention section, and a flame shield device for a pipe penetrating portion is provided on the wall.

  FIG. 1A and FIG. 1B are diagrams showing a configuration of a flame shield device for a pipe penetrating portion according to the present embodiment, and are views of the flame shield device as viewed from a direction toward a wall. FIG. 1A shows a normal configuration in which no fire has occurred, and FIG. 1B shows a configuration in the event of a fire. 1A and 1B, the right half is an external view, and the left half is a cross-sectional view in a plane parallel to the wall, showing the internal configuration.

  2A and 2B are diagrams showing a configuration of a flame shielding device for a pipe penetration portion according to the present embodiment, as seen from the center line AA of the combustible pipe 2 shown in FIGS. 1A and 1B. . FIG. 2A shows a normal configuration in which no fire has occurred, and FIG. 2B shows a configuration in the event of a fire.

  The combustible pipe 2 passes through the wall 1 that partitions the fire prevention compartment, and when the ambient temperature rises at the time of fire, at least a part is burnt or melted and disappears (FIG. 2B), and the pipe penetrating portion 6 opens. Around the combustible pipe 2, a pipe sleeve 4, which is a tubular member for securing an opening through which the combustible pipe 2 penetrates the wall 1, is provided. The pipe sleeve 4 is filled with a hole finishing material 3 in order to fill a gap between the combustible pipe 2 and the pipe sleeve 4.

  The flame shield device for a pipe penetration portion according to the present embodiment is provided around the pipe sleeve 4 and includes a non-combustible material cover mechanism 14, a pair of support steel materials 16, and a pair of shield steel materials 26.

  The incombustible material cover mechanism 14 includes at least two incombustible material covers 10 (10a, 10b), at least two pairs of incombustible material cover connecting plates 13 (13a, 13b), at least one pair of roller shafts 11a, and at least two incombustible material covers. A shaft 12 (12a, 12b), at least one pair of rollers 11, and a pair of meltable stoppers 19 are provided. The non-combustible material cover mechanism 14 is positioned above the combustible pipe 2 (pipe penetrating portion 6) in a normal time (FIG. 1A, FIG. 2A) where no fire has occurred. In FIG. 1B and FIG. 2B, the meltable stopper 19 is not shown for easy viewing.

  The support steel material 16 is a pair of rod-like members whose length direction extends in parallel with the surface of the wall 1 along the vertical direction (gravity direction), and is fixed to the wall 1 by a plate 17 and anchor bolts 18 and passes through the pipe. It is provided on both sides in the horizontal direction of the portion 6 and is positioned so as to sandwich the pipe penetration portion 6 from both sides in the horizontal direction. The supporting steel material 16 is installed on the wall 1 so that there is no gap between the supporting steel material 16 and the wall 1. Each of the pair of support steel materials 16 includes a guide 15 that is a groove portion (hollow portion of the support steel material 16) extending in the direction of gravity. Further, each of the pair of supporting steel materials 16 can include a hole 104. The hole 104 fixes the meltable stopper 19 as will be described later.

  The shielding steel material 26 is a pair of rod-like members extending in the horizontal direction, is fixed to the support steel material 16 and is provided above and below the non-combustible material cover mechanism 14, and the pipe penetrating portion 6 extends in the vertical direction (gravity direction). Located so as to be sandwiched from both sides. The shielding steel material 26 is installed on the support steel material 16 so that there is no gap between the support steel material 16 and the wall 1.

  The at least two noncombustible material covers 10 are made of steel plates and are connected to each other in the vertical direction, and each is integrally connected to a pair of noncombustible material cover connecting plates 13 by welding or the like. In the present embodiment, the non-combustible material cover mechanism 14 includes two non-combustible material covers 10. Of the two non-combustible material covers 10, the non-combustible material cover 10 located above is referred to as an upper non-combustible material cover 10a, and the non-combustible material cover 10 located below is referred to as a lower non-combustible material cover 10b.

  The at least two pairs of non-combustible material cover connecting plates 13 are made of a steel plate, and one of the non-combustible material cover connecting plates 13 constituting one pair and one of the non-combustible material cover connecting plates 13 constituting the other pair are included. The other one of the non-combustible material cover connecting plates 13 that are connected in the vertical direction and that constitute one pair and the other one of the non-combustible material cover connecting plates 13 that constitute the other pair are connected in the vertical direction. The incombustible material cover connecting plate 13 includes holes through which the roller shaft 11a or the incombustible material cover shaft 12 penetrates at both ends in the length direction (vertical direction). The incombustible material cover connecting plates 13 constituting the pair are provided on both sides in the horizontal direction of the pipe penetrating part 6 and are positioned so as to sandwich the pipe penetrating part 6 from both sides in the horizontal direction. In the present embodiment, the non-combustible material cover mechanism 14 includes two pairs of non-combustible material cover connecting plates 13. Of the two pairs of non-combustible material cover connecting plates 13, the pair of non-combustible material cover connecting plates 13 located above is referred to as the upper pair of non-combustible material cover connecting plates 13a, and the pair of non-combustible material cover connecting plates 13 located below. This is referred to as a lower pair of non-combustible material cover connecting plate 13b. The upper pair of incombustible material cover connecting plates 13a is connected to the upper incombustible material cover 10a, and the lower pair of incombustible material cover connecting plates 13b is connected to the lower incombustible material cover 10b.

  Each of the at least two noncombustible material covers 10 is provided across a pair of noncombustible material cover connecting plates 13. In this embodiment, the upper incombustible material cover 10a is provided across the upper pair of incombustible material cover connecting plates 13a, and the lower incombustible material cover 10b is provided across the lower incombustible material cover connecting plates 13b.

  The roller shaft 11a is provided so as to extend in the horizontal direction and connect the pair of non-combustible material cover connecting plates 13. The roller shaft 11a is provided with rollers 11 at both ends. In the present embodiment, the non-combustible material cover mechanism 14 includes one roller shaft 11a, and the roller shaft 11a passes through a hole provided in the lower end portion of the lower pair of non-combustible material cover connecting plate 13b.

  The noncombustible material cover shaft 12 extends in the horizontal direction and is provided so as to connect a pair of noncombustible material cover connecting plates 13. In the present embodiment, the non-combustible material cover mechanism 14 includes two non-combustible material cover shafts 12 positioned in the vertical direction. Of the two non-combustible material cover shafts 12, the non-combustible material cover shaft 12 located above is called the upper non-combustible material cover shaft 12a, and the non-combustible material cover shaft 12 located below is called the lower non-combustible material cover shaft 12b. The upper incombustible material cover shaft 12a passes through a hole provided in the upper end portion of the upper pair of incombustible material cover connecting plates 13a. The lower incombustible material cover shaft 12b passes through a hole provided in the lower end portion of the upper pair of incombustible material cover connecting plates 13a and a hole provided in the upper end portion of the lower incombustible material cover connecting plate 13b. In other words, the upper pair of non-combustible material cover connecting plates 13a and the lower pair of non-combustible material cover connecting plates 13b are connected by the lower non-combustible material cover shaft 12b. The upper incombustible material cover shaft 12 a is fixed to the guide 15 of the support steel material 16.

  The upper incombustible material cover 10a is fixed to the support steel material 16 by the upper pair of incombustible material cover connecting plates 13a and the upper incombustible material cover shaft 12a.

  The incombustible material cover connecting plate 13 can rotate around the roller shaft 11a or the incombustible material cover shaft 12.

  The rollers 11 are provided at both ends of the roller shaft 11a, are located in the guides 15 of the support steel material 16, and run while rotating in the guides 15 and can move in the vertical direction. In the present embodiment, the non-combustible material cover mechanism 14 includes a pair of rollers 11. The roller 11 is connected to the lower incombustible material cover 10b, and is positioned above the pipe penetrating portion 6 at a normal time (FIGS. 1A and 2A) when no fire has occurred.

  The meltable stopper 19 is positioned above the pipe penetrating portion 6, so that the roller 11 is positioned above the pipe penetrating portion 6 in a normal time (FIGS. 1A and 2A) when no fire has occurred. Is a member that supports The meltable stopper 19 includes a meltable member made of the same material as the combustible pipe 2 or a material having a melting point lower than that of the combustible pipe 2. The meltable member can be formed of a resin, for example, a vinyl ester resin. The meltable stopper 19 normally supports the roller 11 with a meltable member so that the roller 11 does not move downward in the guide 15, and when a fire occurs, the ambient temperature rises and the meltable member melts or By burning out, the roller 11 is moved downward in the guide 15.

  The meltable stopper 19 is, for example, a protrusion made of a meltable member and provided on the guide 15. In normal times, the meltable stopper 19 may support the roller 11 by placing the roller 11 on the protrusion. Alternatively, the roller 11 may be supported by embedding the roller 11 therein. The meltable stopper 19 may include a plate-like member or a rod-like member made of a meltable member, and the roller 11 may be supported on the plate-like member or the rod-like member by supporting the roller 11. This plate-like member or rod-like member is fixed to, for example, a hole 104 provided in the support steel material 16.

  The roller 11 is normally supported by the meltable stopper 19 and is positioned above the pipe penetrating portion 6 (the upper end side of the support steel material 16 relative to the pipe penetrating portion 6). When the member is melted or burned out, it moves below the pipe penetrating part 6 (lower end side of the support steel material 16 from the pipe penetrating part 6) by the action of gravity.

  The guide 15 includes a roller stopper 20 below the pipe penetrating portion 6. The roller stopper 20 supports the roller 11 by stopping the movement of the roller 11 when the roller 11 moves below the pipe penetrating portion 6 due to the action of gravity in the event of a fire.

  In normal times when no fire has occurred (FIG. 1A, FIG. 2A), since the roller 11 is positioned above the pipe penetrating part 6, the non-combustible material cover mechanism 14 is located above the pipe penetrating part 6 and the non-combustible material cover 10 Folded at the connection between each other. In a normal state, the non-combustible material cover mechanism 14 has a non-combustible material cover 10 that protrudes from the surface (the surface of the wall 1) on which the flame shield device is provided, and the surfaces of the plurality of non-combustible material covers 10 are shaped like a dogleg or zigzag. It is held in a state that forms a shape. Further, the self-weight of the non-combustible material cover mechanism 14 such as the non-combustible material cover 10 is not applied to the combustible piping 2.

  When a fire occurs, the combustible pipe 2 burns or melts and disappears as the ambient temperature (room temperature) rises, and at least a part of the pipe penetration part 6 of the wall 1 opens. When this fire occurs, at least a part of the meltable member of the meltable stopper 19 that normally supports the roller 11 is melted or burned out. When the fusible member of the fusible stopper 19 is melted or burned out, the roller 11 travels along the guide 15 and moves below the pipe penetrating part 6 by the action of gravity. If the roller 11 moves below the pipe penetration part 6, the roller shaft 11a will also move below the pipe penetration part 6, and the nonflammable material cover 10 will cover the opening part of the wall 1 (FIG. 1B, FIG. 2B).

  That is, the non-combustible material cover mechanism 14 is normally folded above the pipe penetrating portion 6, spreads in the event of a fire, extends to the lower side of the pipe penetrating portion 6, closes the opening, and the plurality of non-combustible material covers 10. Is normally protruded with respect to the wall 1 and held in a state of forming a dogleg shape or a zigzag shape. When a fire breaks out, it moves downward so that the positions of the surfaces are aligned and flat. Cover the penetration 6 and close the opening. When the non-combustible material cover 10 covers the pipe penetrating portion 6 when a fire occurs, the upper end portion of the upper non-combustible material cover 10a contacts the shielding steel material 26 located above, and the lower end portion of the lower non-combustible material cover 10b is positioned below. The shielding steel material 26 to be contacted. The supporting steel material 16 and the shielding steel material 26 are provided so that no gap is generated between the supporting steel material 16 and the shielding steel material 26. Therefore, the gap between the nonflammable material cover 10 on the left and right of the nonflammable material cover 10 and the wall 1 is closed by the support steel material 16, and the gap between the nonflammable material cover 10 on the upper and lower sides of the nonflammable material cover 10 and the wall 1. Is closed by the shielding steel material 26. Further, when the non-combustible material cover mechanism 14 extends downward (when the positions of the surfaces of the non-combustible material cover 10 are aligned and flattened), the plurality of non-combustible material covers 10 do not have a gap between them. So that each part overlaps.

  Further, in the event of a fire, the noncombustible material cover connecting plate 13 also contributes to closing the opening of the wall 1. The non-combustible material cover connecting plate 13 closes the gap between the non-combustible material cover 10 and the wall 1 when the non-combustible material cover mechanism 14 extends to the lower side of the pipe penetration portion 6 in the event of a fire.

  In this way, the flame shield device for the pipe penetration part according to the present embodiment can cover the opened pipe penetration part 6 without any gaps in the event of a fire.

  When the hole making material 3 filled in the pipe sleeve 4 is a substance that burns, melts, or contracts in a fire, not only the pipe penetration part 6 but also the pipe sleeve 4 opens when a fire occurs. For this reason, it is necessary to cover the opening inside the piping sleeve 4 when a fire occurs. The flame shield device for a pipe penetrating portion according to the present embodiment can be configured to cover the opening inside the pipe sleeve 4 when a fire occurs.

  FIG. 3 is a diagram showing another configuration of the flame shield device for the pipe penetration portion according to the present embodiment. Like FIG. 1A, the flame shield device is viewed from the direction toward the wall, and a normal fire is not generated. It is a figure which shows the structure of time. In FIG. 3, the right half is an external view, and the left half is a cross-sectional view in a plane parallel to the wall, showing the internal configuration.

  The flame shield device shown in FIG. 3 has the same configuration as the flame shield device shown in FIGS. 1A to 2B, but the positions of the support steel material 16 and the shield steel material 26 are different. In the flame shield device shown in FIG. 3, the support steel material 16 is provided on both sides of the piping sleeve 4 in the horizontal direction, and is positioned so as to sandwich the piping sleeve 4 from both sides in the horizontal direction. The shielding steel material 26 is positioned so as to sandwich the piping sleeve 4 from both sides in the vertical direction (gravity direction). Thus, the support steel material 16 and the shielding steel material 26 are disposed so as to surround the piping sleeve 4.

  In a normal time when no fire has occurred, the non-combustible material cover mechanism 14 is folded above the piping sleeve 4. When a fire occurs, the meltable member of the meltable stopper 19 is melted or burnt out, the roller 11 and the roller shaft 11 a move below the piping sleeve 4, and the noncombustible material cover 10 covers the opening of the wall 1.

  The action of the non-combustible material cover mechanism 14 is the same as that of the flame shield device shown in FIGS. 1A to 2B. Therefore, the flame shield device shown in FIG. 3 can cover the inside of the opened pipe penetration 6 and the pipe sleeve 4 without a gap when a fire occurs.

  A flame shield device for a pipe penetration portion according to a second embodiment of the present invention will be described. The flame shield device according to the present embodiment has the same configuration as that of the flame shield device according to the first embodiment, and the meltable stopper 19 has a configuration described below.

  4A and 4B are views showing the configuration of the meltable stopper 19 provided in the flame shield device for the pipe penetration portion according to the present embodiment, and are views of the flame shield device seen from the direction toward the wall. FIG. 4A shows a normal configuration in which no fire has occurred, and FIG. 4B shows a configuration in the event of a fire.

  FIG. 5 is a view showing the meltable stopper 19 provided on the support steel material 16, and is a view of the flame shield device viewed from above (upper side in the direction of gravity) in a normal time when no fire has occurred.

  As shown in FIG. 4A, in a normal time when no fire has occurred, the meltable stopper 19 includes a meltable member 102, a metal rod 101, and a metal plate 100, and the meltable member 102 supports the roller 11. Yes.

  The meltable member 102 is plate-shaped or rod-shaped, and is fixed to the metal rod 101 and has a portion in which the metal rod 101 is disposed. The metal rod 101 has a rod shape, one end portion is located inside the meltable member 102 to support the meltable member 102, the other end is connected to the metal plate 100, and is integrated with the metal plate 100. The metal plate 100 is plate-shaped and transmits the ambient temperature (room temperature) to the metal rod 101 and also transmits the ambient temperature to the inside of the meltable member 102 via the metal rod 101. The metal plate 100 has a sufficient surface area to efficiently transmit the ambient temperature to the inside of the metal rod 101 and the meltable member 102. The metal rod 101 and the metal plate 100 can be formed of a material having high thermal conductivity, such as copper.

  The meltable member 102 normally has a roller holding portion 103 (a portion where the metal rod 101 is not disposed) on which the roller 11 is placed so that the roller 11 does not move downward in the guide 15. In addition, the roller holding unit 103 supports the roller 11. The roller holding unit 103 has a strength capable of supporting the self-weight of the non-combustible material cover mechanism 14 at normal temperature (normal atmospheric temperature at which no fire has occurred).

  As shown in FIG. 5, the meltable stopper 19 is fixed to the support steel material 16 by arranging the metal rod 101 in the hole 104 of the support steel material 16. A portion of the meltable member 102 may be disposed in the hole 104. However, even if the ambient temperature rises and the meltable member 102 is melted or burned out in the event of a fire, the hole 104 is blocked by the metal rod 101. For this reason, the metal rod 101 has a portion whose shape and size (for example, diameter or width) are substantially equal to the shape and size of the hole 104, and the hole 104 is blocked by this portion when a fire occurs. As described above, the meltable member 102 supports the roller 11 with the roller holding portion 103 in a normal time when no fire has occurred.

  As shown in FIG. 4B, when a fire occurs and the ambient temperature rises, the temperatures of the metal plate 100 and the metal rod 101 rise. The meltable member 102 can efficiently transmit the heat of the fire not only to the outer surface but also to the inside through the metal plate 100 and the metal rod 101. At least a part of the meltable member 102 to which the heat of the fire has been transmitted is melted or burnt out, and the roller holding portion 103 disappears or the non-combustible material cover mechanism 14 cannot be supported. Then, the roller 11 is no longer supported by the roller holding portion 103, travels along the guide 15 by the action of gravity and moves below the pipe penetration portion 6 or the piping sleeve 4, and the noncombustible material cover 10 passes through the opening of the wall 1. cover. Since the meltable stopper 19 includes the metal plate 100 and the metal rod 101, the heat of the fire is efficiently transmitted to the meltable member 102 in the event of a fire, and the noncombustible material cover 10 reliably covers the opening of the wall 1.

  The flame-shielding device for the pipe penetration portion according to the present embodiment covers the inside of the opened pipe penetration portion 6 or the piping sleeve 4 without a gap in the event of a fire by providing the structure as described above for the meltable stopper 19. be able to.

  A flame shield device for a pipe penetration portion according to Embodiment 3 of the present invention will be described. The flame shield device according to the present embodiment has the same configuration as that of the flame shield device according to the first embodiment, but differs from the first embodiment in that the non-flammable material cover mechanism 14 includes four non-flammable material covers 10.

  As described in the first embodiment, the non-combustible material cover mechanism 14 is folded at the connection portion between the non-combustible material covers 10 above the pipe penetration portion 6 or the piping sleeve 4 in a normal time when no fire is generated. Yes. When the non-combustible material cover mechanism 14 includes only two non-combustible material covers 10 as in the first embodiment, the non-combustible material cover 10 becomes large when the diameters of the combustible piping 2 and the piping sleeve 4 are large. Then, when the non-combustible material cover mechanism 14 is normally folded, the length of the non-combustible material cover 10 projecting from the surface (the surface of the wall 1) on which the flame shield device is provided becomes long, and is combustible. There is a possibility of interference with other structures existing around the pipe 2.

  For this reason, the noncombustible material cover mechanism 14 can be made small by providing three or more (preferably even number) noncombustible material covers 10. In a normal time when no fire is generated, the non-combustible material cover mechanism 14 is folded in a multi-stage like a bellows, and the surfaces of the plurality of non-combustible material covers 10 are held in a zigzag shape. Thereby, the nonflammable material cover 10 can shorten the length which protrudes with respect to the surface in which the flame shield apparatus is provided.

  In this embodiment, an example in which the non-combustible material cover mechanism 14 includes four non-combustible material covers 10 will be described. Below, only the point which is different from the incombustible material cover mechanism 14 in Example 1 about the incombustible material cover mechanism 14 in a present Example is demonstrated.

  6A and 6B are diagrams illustrating the configuration of the flame shielding device for the pipe penetration portion according to the present embodiment, as seen from the center line of the combustible piping 2 as in FIGS. 2A and 2B of the first embodiment. It is. FIG. 6A corresponds to FIG. 2A and shows a normal configuration in which no fire has occurred, and FIG. 6B corresponds to FIG. 2B and shows a configuration in the event of a fire.

  The non-combustible material cover mechanism 14 includes four non-combustible material covers 10 (10c, 10d, 10e, 10f), four pairs of non-combustible material cover connecting plates 13 (13c, 13d, 13e, 13f), two roller shafts 11b, 11c, Three incombustible material cover shafts 12 (12c, 12d, 12e), two pairs of rollers 11, and a pair of meltable stoppers 19 are provided. The four noncombustible material covers 10c to 10f are connected in the vertical direction, and each is connected to the four pairs of noncombustible material cover connecting plates 13c to 13f. The incombustible material cover shaft 12 c passes through a hole provided in the upper end portion of the incombustible material cover connecting plate 13 c and is fixed to the guide 15 of the support steel material 16. The incombustible material cover connecting plate 13c and the incombustible material cover connecting plate 13d are connected by the incombustible material cover shaft 12d, and the incombustible material cover connecting plate 13d and the incombustible material cover connecting plate 13e are connected by the roller shaft 11b. The nonflammable material cover connecting plate 13e and the nonflammable material cover connecting plate 13f are connected by the cover shaft 12e.

  The two pairs of rollers 11 are not shown in FIGS. 6A and 6B. Further, in FIG. 6B, the meltable stopper 19 is not shown for easy viewing.

  The incombustible material cover 10c located at the uppermost part is fixed to the support steel material 16 by the incombustible material cover connecting plate 13c and the incombustible material cover shaft 12c.

  The two pairs of rollers 11 are provided at both ends of the roller shafts 11 b and 11 c, respectively, and are positioned in the guide 15 of the support steel material 16. The rollers 11 provided at both ends of the roller shaft 11c are the lowermost rollers in the guide 15 and are connected to the non-combustible material cover 10f located at the lowermost portion, so that a fire does not occur in a normal time (see FIG. 6A), it is supported by the meltable member of the meltable stopper 19 so as to be positioned above the pipe penetrating part 6 or the pipe sleeve 4, and in the event of a fire (FIG. 6B), from the pipe penetrating part 6 or the pipe sleeve 4 Also move down in the guide 15. The roller 11 is also connected to the noncombustible material covers 10d and 10e. In the event of a fire, the non-combustible material cover mechanism 14 extends to extend below the pipe penetration 6 to close the opening. When the non-combustibility cover 10 covers the pipe penetration 6, the top of the non-combustibility material cover 10 c is located. An upper end part contacts the shielding steel material 26 located above, and the lower end part of the incombustible material cover 10f located at the lowermost part contacts the shielding steel material 26 located below.

  As described above, the non-combustible material cover mechanism 14 includes three or more (preferably even number) non-combustible material covers 10 and is folded in a multi-stage in a bellows shape in a normal time when no fire has occurred. The length by which the incombustible material cover 10 protrudes from the surface on which the flame device is provided can be shortened. Thereby, the non-combustible material cover mechanism 14 does not need to consider interference with other structures around the combustible pipe 2 at the normal time.

  The flame shield device for a pipe penetration portion according to the present invention can be provided on the floor or ceiling not only when the combustible pipe 2 penetrates the wall 1 but also when it penetrates the floor or ceiling. . In the present embodiment, an example of a flame shield device that seals the opening of the pipe penetration part 6 on the floor or ceiling when a fire occurs will be described.

  FIG. 7: is a figure which shows the structure of the flame shield apparatus of the piping penetration part by Example 4 of this invention, and is a side view of the flame shield apparatus installed in the floor. FIG. 7 shows a configuration of a flame shield device in a normal state where no fire has occurred. The flame shield device according to the present embodiment has the same configuration as the flame shield device shown in the first embodiment, but the following points are mainly different from the flame shield device of the first embodiment. That is, in the flame shield device according to the first embodiment (FIGS. 1A and 2A), the support steel material 16 extends in parallel with the surface of the wall 1 along the direction of gravity (vertical direction). In the flame shield device, the support steel material 16 extends such that the length direction is oblique with respect to the direction of gravity, that is, the positions in the height direction are different at both ends in the length direction.

  The flame shield device for the pipe penetration portion according to the present embodiment is provided around the combustible pipe 2 and the pipe sleeve 4 penetrating the floor 5, and includes at least three incombustible material cover mechanisms 14 and a pair of base steel materials 28. A shielding steel plate 27, a pair of support steel materials 16, and a pair of shielding steel materials 26 are provided. The flame shield device according to the present embodiment is installed on the floor 5 and seals the pipe penetration part 6 of the floor 5 and the opening inside the pipe sleeve 4 when a fire occurs.

  The incombustible material cover mechanism 14 includes two incombustible material covers 10, two pairs of incombustible material cover connecting plates 13, one roller shaft 11a, two incombustible material cover shafts 12, a pair of rollers 11, and a pair of meltability. A stopper 19 is provided. In FIG. 7, the nonflammable material cover shaft 12 and the roller 11 that are positioned above the roller shaft 11 a and the two nonflammable material cover shafts 12 and are fixed to the guide 15 of the support steel material 16 are not shown. . The configuration of the noncombustible material cover mechanism 14 is the same as that of the noncombustible material cover mechanism 14 in the first embodiment.

  The pedestal steel material 28 is a rod-like member, and is fixed to the floor 5 by the plate 17 and the anchor bolt 18. The pedestal steel material 28 is provided on the floor 5 so that there is no gap between the pedestal steel material 28 and supports one of the shielding steel plate 27 and the shielding steel material 26.

  The shielding steel plate 27 is a plate-like member, is provided in a state of standing on the pedestal steel material 28 so that there is no gap with the pedestal steel material 28, and supports the support steel material 16. The shielding steel plate 27 may support the shielding steel material 26. That is, the shielding steel plate 27 is a member that is provided in a standing state with respect to the surface of the floor 5 and supports at least the support steel material 16.

  The support steel material 16 includes guides 15 that extend obliquely with respect to the direction of gravity and extend in the length direction so that the positions in the height direction at both ends in the length direction are different from each other. The support steel material 16 is provided on the upper portion of the shielding steel plate 27 so that there is no gap with the shielding steel plate 27, and is installed obliquely with respect to the direction of gravity by the shielding steel plate 27, that is, intersecting the surface of the floor 5. .

  The shielding steel plate 27 includes those provided along the length direction of the support steel material 16 and those provided along the direction intersecting the length direction of the support steel material 16. These at least three shielding steel plates 27 connect the support steel material 16 installed obliquely with respect to the surface of the floor 5 and the floor 5 in three directions and surround the periphery of the pipe penetration portion 6.

  The two noncombustible material covers 10 are connected to each other in the length direction of the support steel material 16.

  The guide 15 is a portion that travels while the roller 11 rotates, and includes a roller stopper 20 at a lower portion. The angle at which the support steel material 16 intersects the surface of the floor 5 is determined by the travel speed of the roller 11 and the ease of travel of the guide 15 when the meltable member of the meltable stopper 19 is melted or burned out in the event of a fire. It can be determined according to the friction force on the roller 11.

  The shielding steel material 26 is provided on the support steel material 16. One of the shielding steel materials 26 (the shielding steel material 26 positioned above) is also fixed to the shielding steel plate 27, and the other (the shielding steel material 26 positioned below) is also fixed to the pedestal steel material 28. The shielding steel material 26 is installed so that there is no gap between the supporting steel material 16 and the shielding steel plate 27 or between the supporting steel material 16 and the pedestal steel material 28.

  The meltable stopper 19 supports the roller 11 on the upper end side of the support steel material 16 with respect to the pipe penetrating portion 6 at a normal time when no fire is generated.

  The non-combustible material cover mechanism 14 is folded at the connecting portion between the non-combustible material covers 10 so that the non-combustible material cover 10 protrudes from the surface of the floor 5 at a normal time when no fire is generated. It is located in the upper end side of the support steel material 16 rather than. When the ambient temperature rises in the event of a fire and the meltable member of the meltable stopper 19 is melted or burnt out, the roller 11 supported by the meltable member travels on the guide 15 by the action of gravity and penetrates the pipe in the floor 5. It moves beyond the part 6 to the lower end side of the support steel material 16 rather than the pipe penetration part 6, and the noncombustible material cover 10 covers the opening of the floor 5. In this way, the non-combustible material cover mechanism 14 spreads when a fire occurs and extends to the lower end side of the support steel material 16 to close the opening. The support steel material 16 and the shielding steel material 26 are provided so that there is no gap between the support member 16 and the shield member 26 when the cover member 10 covers the opening of the floor 5. Therefore, when a fire occurs, the non-combustible material cover 10, the support steel material 16, the shielding steel material 26, the shielding steel plate 27, and the pedestal steel material 28 can cover the opening of the floor 5 without a gap.

  When the combustible pipe 2 penetrates the ceiling, the flame shield device for the pipe penetration portion according to the present embodiment is installed on the ceiling and can cover the opening of the ceiling without any gap. When installing the flame shield device on the ceiling, the base steel material 28 is fixed to the ceiling, and the support steel material 16 is fixed to the ceiling so as to extend obliquely with respect to the direction of gravity, that is, crossing the ceiling surface.

  As described above, the flame shield device for the pipe penetration portion according to the present embodiment can provide the opening of the pipe penetration portion 6 on the floor or ceiling in the event of a fire even when the flammable piping penetrates the floor or ceiling. Can be sealed.

  In addition, this invention is not limited to said Example, A various deformation | transformation is possible. For example, the above-described embodiments are described in detail for easy understanding of the present invention, and the present invention is not necessarily limited to an aspect including all the configurations described. In addition, a part of the configuration of a certain embodiment can be replaced with the configuration of another embodiment. It is also possible to add the configuration of another embodiment to the configuration of one embodiment. In addition, it is possible to delete a part of the configuration of each embodiment or to add or replace another configuration.

  DESCRIPTION OF SYMBOLS 1 ... Wall, 2 ... Flammable piping, 3 ... Hole finishing material, 4 ... Piping sleeve, 5 ... Floor, 6 ... Pipe penetration part, 10 ... Nonflammable material cover, 10a ... Upper nonflammable material cover, 10b ... Lower nonflammable material cover 10c, 10d, 10e, 10f ... non-combustible material cover, 11 ... roller, 11a, 11b, 11c ... roller shaft, 12 ... non-combustible material cover shaft, 12a ... upper non-combustible material cover shaft, 12b ... lower non-combustible material cover shaft, 12c , 12d, 12e ... non-combustible material cover shaft, 13 ... non-combustible material cover connecting plate, 13a ... upper pair of non-combustible material cover connecting plate, 13b ... lower pair of non-combustible material cover connecting plate, 13c, 13d, 13e, 13f ... non-combustible material Cover connecting plate, 14 ... non-combustible material cover mechanism, 15 ... guide, 16 ... supporting steel, 17 ... plate, 18 ... anchor bolt, 19 ... meltable stopper, 20 ... roller stopper, 26 ... shielding Wood, 27 ... shielding steel sheet, 28 ... base steel, 100 ... metal plate, 101 ... metal rod, 102 ... fusible member, 103 ... roller holding section, 104 ... supporting steel hole.

Claims (6)

A pair of supporting steel members provided on the wall, sandwiching from both sides in the horizontal direction, a pipe-shaped part which is a rod-shaped member and is a part through which the flammable pipe of the plant wall penetrates;
A non-combustible material cover mechanism comprising at least two non-combustible material covers, at least one pair of rollers, and a pair of meltable stoppers;
With
Each of the pair of supporting steel members includes a guide that is a groove portion that is provided on the wall in the length direction along the vertical direction and extends in the vertical direction.
The non-combustible material cover is made of a steel plate and is connected to each other in the vertical direction,
Of the non-combustible material covers, the non-combustible material cover located at the top is fixed to a pair of the supporting steel materials, and a pair of the rollers is connected to each of the other non-combustible material covers. And
The roller is located in the guide of the support steel;
Each of the pair of fusible stoppers includes a fusible member, and in a normal time when no fire has occurred, the fusible member is at the bottom of each of the guides of the pair of supporting steel materials. The certain roller is supported above the pipe penetration part,
In the normal time, the non-combustible material cover mechanism is positioned above the pipe penetrating portion, and is folded and held at a connection portion between the non-combustible material covers so that the non-combustible material cover protrudes from the wall. And
In the event of a fire,
The fusible member melts or burns away;
The roller supported by the meltable member at the normal time moves in the guide below the pipe penetrating portion,
The non-combustible material cover mechanism that was folded at the normal time extends downward,
The non-combustible material cover covers the pipe penetration part.
A flame shield device for a pipe penetration portion. A pair of supporting steel materials provided on the surface, sandwiching from both sides in the horizontal direction a pipe penetration part, which is a bar-like member and a part through which flammable piping on the floor or ceiling surface of the plant penetrates;
A non-combustible material cover mechanism comprising at least two non-combustible material covers, at least one pair of rollers, and a pair of meltable stoppers;
With
Each of the pair of supporting steel materials includes guides that are groove portions extending in the length direction at different positions in the height direction at both ends in the length direction,
The non-combustible material cover is composed of a steel plate, and is connected to each other in the length direction of the support steel material,
Of the non-combustible material covers, the non-combustible material cover located at the top is fixed to a pair of the supporting steel materials, and a pair of the rollers is connected to each of the other non-combustible material covers. And
The roller is located in the guide of the support steel;
Each of the pair of fusible stoppers includes a fusible member, and in a normal time when no fire has occurred, the fusible member is at the bottom of each of the guides of the pair of supporting steel materials. The certain roller is supported on the upper end side of the support steel material rather than the pipe penetrating portion,
At the normal time, the non-combustible material cover mechanism is located on the upper end side of the support steel material with respect to the pipe penetrating portion, and the non-combustible material covers are connected to each other so that the non-combustible material cover protrudes from the surface. It is folded and held,
In the event of a fire,
The fusible member melts or burns away;
The roller supported by the meltable member at the normal time moves in the guide to the lower end side of the support steel material than the pipe penetration part,
The non-combustible material cover mechanism that was folded at the normal time extends to the lower end side of the support steel material,
The non-combustible material cover covers the pipe penetration part.
A flame shield device for a pipe penetration portion. The fusible member is made of the same material as the combustible pipe, or a resin having a melting point lower than that of the combustible pipe.
The flame shield device for a pipe penetration part according to claim 1 or 2. Each of the pair of meltable stoppers further comprises a metal bar and a metal plate,
The meltable member has a plate shape or a rod shape, and is fixed to the metal rod,
The metal rod is disposed in a hole provided in the support steel material, one end is located inside the meltable member, and the other end is connected to the metal plate.
The flame shield device for a pipe penetration part according to claim 1 or 2. A rod-like member extending in the horizontal direction, further comprising a pair of shielding steel members fixed to the support steel member so as to sandwich the pipe penetration portion from both sides in the vertical direction;
When the non-combustible material cover covers the pipe penetrating portion when a fire occurs, the shielding steel material located above contacts the upper end of the non-combustible material cover located at the top, and the shielding steel material located below is Contacting the lower end of the incombustible material cover located at the bottom;
The flame shield device for a pipe penetrating portion according to claim 1. A pair of shielding steel members fixed to the support steel material so as to sandwich the pipe penetration portion from both sides in the length direction of the support steel material;
A plate-like member, provided in a standing state with respect to the surface, and supporting at least three shielding steel plates for supporting the support steel material;
Further comprising
When the non-combustible material cover covers the pipe penetrating portion when a fire occurs, the shielding steel material located above contacts the upper end of the non-combustible material cover located at the top, and the shielding steel material located below is Contacting the lower end of the incombustible material cover located at the bottom;
The flame shield apparatus for a pipe penetration part according to claim 2.

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