JP2015128489A - Fire spread prevention device for penetration part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire spread prevention device for penetration part, the device being capable of preventing the spreading of fire to a different fireproof compartment even when a flammable pipe is installed through a floor or a wall that partitions the different fireproof compartment.SOLUTION: A fire spread prevention device for penetration part comprises: an incombustible material packing part having a penetration part that is formed of an incombustible material, to a partition structure that is a floor or a wall partitioning a different fireproof compartment and through which a flammable pipe penetrates without leaving any gap; and separation means for separating the penetration part, when the flammable pipes are burned and lost, from the fireproof compartment where a fire is burning. The separation means is formed of an incombustible material, the separation means comprising: an incombustible material cover supported by the flammable pipes at a normal time without a fire; and a fastener to support the incombustible material cover that drops by gravity when the pipe is burned and lost.

Description

  The present invention relates to a through-spreading prevention device for preventing the spread of fire to an adjacent fire-proofing section through piping provided in a floor or wall penetrating part that separates different fire-proofing sections, particularly when a combustible pipe is used for the through-part. It is related with the penetration part fire prevention apparatus.

  There is Patent Document 1 as a background art of this technical field. Japanese Patent Application Laid-Open No. H10-228688 discloses a through-hole fire prevention device in which a drain pipe is composed of a flammable pipe and a non-flammable pipe, and is provided at a connection portion between both pipes. In Patent Document 1, when a fire occurs around the drainage pipe on the lower floor, the flammable pipe disappears due to the fire, and by closing the opening of the nonflammable pipe penetrating to the upper floor side at that time, An apparatus for preventing the spread of fire to the upper floor is described.

JP 2012-193573 A

  When the flammable piping passes through a floor or a wall that partitions different fire prevention compartments, the flammable piping burns even if the flammable piping is in the through portion at the time of a fire, and the through portion becomes an opening. Since the fire spreads through the opening to another fire protection zone, it is necessary to close the opening so as not to fall into such a case.

  However, when the entire pipe is composed of flammable pipe, even if the opening of the pipe is simply blocked as in Patent Document 1, it is not possible to prevent the spread of fire. In addition, the fire spread prevention device of Patent Document 1 needs to flange-connect a non-combustible pipe because of its structure, and there is a problem that can cause leakage at normal times.

  Therefore, this invention provides the penetration part fire spread prevention apparatus which can prevent the fire spread to a different fire prevention division, even when the combustible piping is provided through the floor and wall which partition different fire prevention divisions.

In order to solve the above-described problems, the through-hole spread preventing device of the present invention has at least the following characteristics.
The present invention relates to a nonflammable material filling portion formed of a nonflammable material on a partition structure that is a floor or a wall that partitions different fire prevention compartments, and has a penetrating portion that closely contacts and penetrates the flammable piping, and combustion of the flammable piping It has an isolating means for isolating the penetration part from the fire-proof area where the fire has occurred at the time of disappearance, and the isolating means is made of non-combustible material and is supported by a non-combustible material cover supported by flammable piping at normal times without a fire. And a fastener that supports a non-combustible material cover that drops due to gravity when disappearing.

Moreover, it has the sleeve for penetration parts formed with the nonflammable material surrounding the circumference | surroundings of a nonflammable material filling part, and a fastener may be fixed to the sleeve for penetration parts.
Furthermore, the sleeve for the penetrating portion extends a predetermined length from the partition structure,
The isolation means may have a penetrating sleeve.

In addition, a cylindrical box fixed to the partition structure around the incombustible material filling portion, extending in a direction orthogonal to the incombustible material filling portion, and a fastener are fixed to the box, and the separating means is a box You may have.
Further, the non-combustible material cover may have a disk shape, and the fastener may fix the non-combustible material cover in a rotatable manner.

Further, the non-combustible material cover may have a shape of a blind or a bellows.
Further, the non-combustible material cover may have a shape of two semi-discs, and the fastener may support the two semi-discs so that they can be opened and closed left and right.

In addition, the partition structure divides the fire protection section into upper and lower parts, the noncombustible material cover has a sector shape by dividing the disk into a plurality of sectors, and the fastener rotates each sector-shaped arc. It may be supported as possible.
Furthermore, the non-combustible material cover or the flammable pipe may have a buffer mechanism at a contact portion where the non-combustible cover is supported.

  ADVANTAGE OF THE INVENTION According to this invention, even when a combustible piping is provided through the floor and wall which partition a different fire prevention division, the penetration part fire prevention apparatus which can prevent the fire spread to a different fire prevention division can be provided.

It is a figure which shows the normal state (state before piping loss | disappearance) where the fire of the penetration part fire prevention apparatus in Example 1 of this invention has not occurred. It is a figure which shows the operation | movement of the penetration part fire prevention apparatus when the fire in Example 1 of this invention generate | occur | produced, and the state after piping loss | disappearance. It is the figure seen from the direction of arrow D in FIG. 1B. It is an enlarged view of A of FIG. 1A. It is an enlarged view of B of FIG. 1B. It is a figure which shows the normal state (state before piping loss | disappearance) where the fire of the penetration part fire prevention apparatus in Example 2 of this invention has not occurred. It is a figure which shows the state after piping loss of the penetration part fire spread prevention apparatus when the fire in Example 2 of this invention generate | occur | produced. It is a figure which shows the normal state (state before loss | disappearance of piping) where the fire of the penetration part fire prevention apparatus in Example 3 of this invention has not occurred. It is the figure seen from the direction of the arrow F in FIG. 3A, and is a figure which shows the operation | movement of a penetration part fire prevention apparatus when a fire breaks out, and the state after piping loss | disappearance. It is a figure which shows the 4th Example of the penetration part fire spread prevention apparatus of this invention. It is a figure which shows the 5th Example of the penetration part fire prevention apparatus of this invention. It is a figure which shows the 6th Example of the penetration part fire spread prevention apparatus of this invention.

  Hereinafter, an embodiment of a penetration part fire prevention device 10 of the present invention that prevents the spread of fire from combustible piping that penetrates floors and walls (collectively referred to as partition structures) that partition different fire prevention sections will be described with reference to the drawings. To do. Hereinafter, description will be made using walls as an example of the partition structure.

  The flammable piping has corrosion resistance, is light and strong, has excellent earthquake resistance, and has excellent flexibility. For this reason, it may be used in some parts of piping for cooling equipment (condenser etc.) mainly in thermal power plants and nuclear power plants, drainage system piping, general buildings and factories. In particular, since thermal power plants and nuclear power plant condensers are cooled using seawater, corrosion resistance is an important factor.

  The penetration part fire prevention device 10 of the present invention has an isolating means for isolating a penetration part formed for closely attaching a flammable pipe to penetrate a wall from a fire prevention compartment where a fire is generated.

Example 1
FIG. 1A to FIG. 1E are views showing a first embodiment 10A of the penetration portion fire prevention device 10 of the present invention. FIG. 1A is a diagram illustrating a normal state (a state before the disappearance of the pipe) in which the fire of the penetration portion fire prevention device 10A does not occur. FIG. 1B is a diagram illustrating an operation of the penetration portion fire prevention device 10A when a fire occurs and a state after the disappearance of the pipe. FIG. 1C is a diagram viewed from the direction of arrow D in FIG. 1B. FIG. 1D is an enlarged view of A of FIG. 1A. FIG. 1E is an enlarged view of B of FIG. 1B.

  1 A of penetration part fire prevention apparatuses of Example 1 are the nonflammable material filling part 3 by which the nonflammable material was filled in the penetration part which the combustible piping 2 penetrates the wall 1, and nonflammable material filling as shown to FIG. 1A It has a through-portion sleeve 50 that is a non-combustible material surrounding the periphery of the portion 3, and a disk-shaped non-combustible material cover 200 that closes an opening formed by the through-portion sleeve 50. The incombustible material filling portion 3 that is a hole in the through portion is made of a fire-resistant material such as mortar or rock wool. The through-portion sleeve 50 is normally formed flush with the wall 1, but in the first embodiment, as shown in FIG. 1C, it has a cylindrical shape extending from the wall 1 and is easy to attach. I am doing so. The non-combustible material cover 200 is rotatably fixed by a fastener 100 provided at the upper part of the protruding cylindrical end portion of the penetrating portion sleeve 50. Hereinafter, the nonflammable material filling portion 3, the penetration portion sleeve 50, and the nonflammable material cover and fastener 100 are referred to as a basic configuration, with some exceptions.

  In the first embodiment, the isolating means includes a through portion sleeve 50, a non-combustible material cover 200, and a fastener 100.

Next, operation | movement of 10 A of penetration part fire prevention apparatuses of Example 1 is demonstrated. As shown in FIG. 1A, the incombustible material cover 200 is normally opened around the fastener 100 and supported by the combustible piping 2. A fire occurs in one compartment and the combustible piping 2 on the same compartment side burns. When combusted and the combustible piping 2 disappears, as shown by an arrow C in FIG. 1B, the noncombustible material cover 200 supported on the upper portion of the combustible piping 2 falls with the fastener 100 as a shaft by its own weight. As a result, the incombustible material cover 200 is in close contact with the end of the through-portion sleeve 50 to protect the through-portion from a fire and prevent the spread of fire to adjacent compartments.
The above is the configuration and operation of the separating means of the penetration portion fire prevention device 10A of the first embodiment.

  Moreover, as shown in the enlarged view of the A part of FIG. 1A shown in FIG. 1D, the penetration part fire prevention device 10 </ b> A of Example 1 is a contact part of the combustible pipe 2 on the opposite side of the fastener 100 of the non-combustible material cover 200. Has a buffer mechanism 11. The buffer mechanism 11 is made of a soft material such as rubber or urethane that burns and disappears in a fire. The buffer mechanism 11 can prevent direct contact between the incombustible material cover 200 and the combustible pipe 2 at normal times, and can prevent damage caused to the combustible pipe due to vibration generated in the combustible pipe 2. Further, as will be described later, since the buffer mechanism 11 burns and disappears, it does not hinder the close contact of the non-combustible material cover 200 with the penetration portion sleeve 50. In addition, you may provide the buffer mechanism 11 in the combustible piping 2 side of the contact part of the nonflammable material cover 200 and the combustible piping 2. FIG.

  Furthermore, the penetration part fire prevention device 10 </ b> A according to the first embodiment includes an adhesion unit that improves adhesion between the incombustible material cover 200 and the penetration part sleeve 50. FIG. 1E is an enlarged view of a portion B in FIG. 1B and shows an example of the contact means. The close contact means has a concave or convex 12 around the incombustible material cover 200 and a convex or concave 12 so as to be fitted to the corresponding periphery of the through portion sleeve 50. Thereby, the fire spread prevention capability of 10 A of penetration part fire spread prevention apparatuses can be improved. As the close contact means, in addition to the above, the lower side of the through portion sleeve 50 is inclined long, or a magnet is provided on the contact surface between the incombustible material cover 200 and the through portion sleeve 50, or the contact surface is provided with close contact. It is conceivable to coat a member to be raised.

  According to Example 1 demonstrated above, even when the combustible piping is provided through the wall which partitions a different fire prevention division, the penetration part fire prevention device which can prevent the fire spread to a different fire prevention division can be provided.

  Moreover, according to Example 1 demonstrated above, since it becomes unnecessary to insert a nonflammable piping in a penetration part, the number of flanges reduces and the location with the possibility of the leakage at the time of normal can be reduced.

(Example 2)
2A and 2B are views showing a second embodiment 10B of the penetration part fire prevention device 10 of the present invention. FIG. 2A is a diagram illustrating a normal state (a state before the disappearance of the pipe) in which the fire of the penetration portion fire prevention device 10B does not occur. FIG. 2B is a diagram illustrating a state after the disappearance of the pipe of the penetration portion fire prevention device 10B when a fire occurs.

  The basic configuration differs from the first embodiment of the penetration portion fire prevention device 10B of the second embodiment in that the disc-shaped incombustible material cover 200 is used in the first embodiment. The non-combustible material cover 300 of the formula) is used. The shape of the blind when it hangs down has a circular shape as in the first embodiment. The fastener 100 may support the interdigital (or bellows) incombustible material cover 300 in a fixed manner, but it is preferable that the fastener 100 is rotatably supported as in the first embodiment. The other non-combustible material filling portion 3 and the through portion sleeve 50 which are other basic configurations are the same as those in the first embodiment.

  In the blind type (or bellows type) non-combustible material cover 300, in order to hang down stably, the fastener 100 provided on the protruding upper portion of the through sleeve 50 has a predetermined length. Can hang down more stably. Therefore, the shape of the interleaved (or bellows) incombustible material cover 300 may be such that the upper part has the length of the fastener 100 part and the lower part is circular.

  In the second embodiment, the isolating means includes the penetrating portion sleeve 50, the non-combustible material cover 300, and the fastener 100 as in the first embodiment.

  Next, operation | movement of the penetration part fire prevention apparatus 10B of Example 2 is demonstrated. As shown in FIG. 2A, the intercalated (or bellows) incombustible material cover 300 is normally folded or rolled up and placed on the combustible pipe 2. Then, when a fire occurs and the combustible pipe 2 in the same compartment burns, the intercalated (or bellows) incombustible material cover 300 falls by its own weight as shown in FIG. Protects the penetration from fire and prevents the spread of fire to adjacent compartments.

  In Example 2, in order to improve the adhesion between the non-combustible material cover 300 and the through-portion sleeve 50, it is conceivable to provide a magnet at a corresponding position around each of them, or to coat the contact surface with a member that increases the adhesion. It is done.

  In the second embodiment, since the intercalated (or bellows) non-combustible material cover 300 is usually gathered smaller, the apparatus takes up less space than the first embodiment, and can be installed compactly.

  Moreover, in Example 2, you may provide the buffer mechanism 11 like Example 1 in any one contact part of the combustible piping 2 and the tinting type or bellows type nonflammable material cover 200. FIG.

  In the second embodiment described above, as in the first embodiment, it is possible to prevent the spread of fire to different fire prevention sections and to achieve the effect of reducing the number of flanges.

  In the first and second embodiments described above, the shapes of the incombustible material cover, the incombustible material filling portion 3 and the penetration portion sleeve 50 viewed from the arrow D in FIG. 1B and the arrow E in FIG. 2B are circular. The polygon may be a quadrilateral or more.

(Example 3)
3A and 3B are views showing a third embodiment 10C of the penetration portion fire prevention device 10 of the present invention. FIG. 3A is a diagram illustrating a normal state (a state before the disappearance of the pipe) in which the fire of the through-hole fire prevention device 10C does not occur. FIG. 3B is a view as seen from the direction of arrow F, showing the operation of the through-hole fire prevention device 10C when a fire occurs and the state after the disappearance of the pipe.

The basic configuration differs from the first embodiment of the penetration portion fire prevention device 10B of the second embodiment in the following two points. The first point is that the disc-shaped incombustible material cover 200 is used in the first embodiment, but in the third embodiment, a pendulum-type incombustible material cover that opens and closes two semicircular plates to the left and right with the fastener 100 as the center. 400 is used. The second point is that the penetrating sleeve 50 protrudes from the wall 1 in the first embodiment, but in the third embodiment, it is flush with the wall 1 and the fastener 100 is directly attached to the wall 1. Is a point. The other non-combustible material filling unit 3 that is the basic configuration is the same as that of the first embodiment.
In the third embodiment, unlike the other embodiments, the isolating means includes the non-combustible material cover 400 and the fastener 100.

  Next, the operation of the penetration portion fire prevention device 10C according to the third embodiment will be described. As shown in FIG. 3B, a fire occurs in one of the compartments, and the combustible piping 2 in the same compartment burns. When the combustible pipe 2 burns and disappears, the pendulum type incombustible material cover 400 placed on the combustible pipe 2 slides like a pendulum around the fastener 100 by its own weight, and is filled with the incombustible material together with the opening of the penetrating portion. Blocking the part 3, protecting the opening of the penetrating part from fire and preventing the spread of fire to adjacent compartments.

  In the third embodiment, since the fastener 100 is directly fixed to the wall 1, the non-combustible material cover 400 does not take up space compared to the second embodiment in which the non-combustible material cover 400 is attached to the penetrating portion sleeve protruding from the penetrating portion. Therefore, Example 3 can be installed in a narrow place.

  Further, in order to securely engage the two semicircular disks, the engagement portion of the pendulum type incombustible material cover 400 may be provided with unevenness 12 or a step as in the first embodiment. Further, the buffer mechanism 11 may be provided at one of the contact portions of the pendulum type incombustible material cover 400 and the combustible pipe 2 as in the first embodiment.

  Further, in Embodiments 1 and 2 and Embodiments 4 and 5 to be described later, it is also possible to make the penetration sleeve 50 flush with the wall 1 and fix the fastener 100 directly to the wall 1 as in Embodiment 3. It is.

  In the third embodiment described above, as in the first embodiment, it is possible to prevent the spread of fire to different fire protection sections and to reduce the number of flanges.

Example 4
FIG. 4 is a view showing a fourth embodiment 10D of the penetration part fire prevention device 10 of the present invention. The fourth embodiment is an example for the upper part of the vertical penetration part in which the combustible pipe 2 is attached to the upper part of the penetration part that vertically penetrates the wall 1 unlike the first to third examples.

The configuration of the fourth embodiment has a structure obtained by rotating the configuration of the first embodiment by 90 degrees. Therefore, the incombustible material cover 500 for the upper part of the vertical penetrating part is supported by the side part of the combustible pipe 2 and is rotatably fixed by the fastener 100 fixed to the protruding cylindrical upper end of the penetrating part sleeve 50. Has been.
In the fourth embodiment, the isolating means includes the penetration portion sleeve 50, the non-combustible material cover 500, and the fastener 100 as in the first embodiment.

  Also in Example 4, a fire occurs in one compartment and the combustible piping 2 in the same compartment burns. When the combustible pipe 2 burns and disappears, the noncombustible material cover 500 supported on the side of the combustible pipe 2 falls on the fastener 100 by its own weight and comes into close contact with the upper end of the through-hole sleeve 50. Protect penetrations from fire and prevent spreading to adjacent compartments.

  Also in the fourth embodiment described above, it is possible to provide the penetration part fire prevention device 10 that can be applied to a place where the flammable pipe 2 penetrates the wall 1 vertically. Fire spread can be prevented.

(Example 5)
FIG. 5 is a view showing a fifth embodiment 10E of the penetration part fire prevention device 10 of the present invention. Example 5 is an example in which the combustible pipe 2 is attached to a penetrating portion that vertically penetrates the wall, as in the case of Example 4. The difference from Example 4 is that the combustible pipe 2 is provided vertically below the wall 1.
In the fourth embodiment, the isolating means includes the penetration portion sleeve 50, the non-combustible material cover 600, and the fastener 100, as in the first embodiment.

  The basic configuration differs from the fourth embodiment of the penetration portion fire prevention device 10E of the fifth embodiment in the following two points. First, the incombustible material cover 600 for the lower part of the vertical penetrating portion constituted by the two meniscuses shown in FIG. 3B is supported on the left and right side portions of the combustible pipe 2 and incorporated in the sleeve 50 for the penetrating portion. It is a point installed in the state. Secondly, since the non-combustible material cover 600 is built in, the through-portion sleeve 50 has a cylindrical shape protruding downward with a sufficient length. The incombustible material filling portion 3 having the basic configuration is the same as that of the first and fourth embodiments.

  Next, operation | movement of the penetration part fire prevention apparatus 10E of Example 5 is demonstrated. Also in Example 5, a fire occurs in one of the compartments, and the combustible piping 2 in the same compartment burns. When the combustible pipe 2 burns and disappears, the two non-combustible material covers 600 supported on the side portions of the combustible pipe 2 fall with the respective fasteners 100 as axes due to their own weight. The two non-combustible material covers 600 are closely or fitted to each other to protect the through portion from fire and prevent the spread of fire to adjacent compartments.

  In Example 5, the end of the L-shaped penetrating sleeve 50 shown in FIG. 5 is connected to the combustible piping 2 side so that two semicircular plates can reliably form a closed space in the event of a fire. Alternatively, a rounded uneven portion may be provided so that the two semi-discs mesh with each other. Further, as in the first embodiment, the buffer mechanism 11 may be provided at one of the contact portions of the non-combustible material cover 600 and the combustible pipe 2.

In the above description, the incombustible material cover 600 is composed of two semicircular plates, but may be composed of three or more fan-shaped plates.
Furthermore, in Example 4, the incombustible material cover 500 is formed of a disc, but if the upper combustible pipe 2 is also a straight pipe, it is formed of a plurality of fan-shaped plates as in Example 5. Also good.

  Also in the fifth embodiment described above, it is possible to provide the penetration portion fire prevention device 10E that can be applied to the lower side location where the flammable pipe 2 penetrates the wall 1 vertically. The spread of fire to the compartment can be prevented, and the effect of reducing the number of flanges can be achieved.

(Example 6)
FIG. 6 is a view showing a sixth embodiment 10F of the penetration part fire prevention device 10 of the present invention. In the sixth embodiment, the non-combustible material cover is fixed to the through-hole sleeve 50 or the wall 1 via the fastener 100 in the first to fifth embodiments, whereas the non-combustible material cover 700 is formed in the box 60 made of the non-combustible material. It is fixed via the fastener 100. Other points are the same as those in the first embodiment.
In the sixth embodiment, the isolation means includes a box 60, a non-combustible material cover 700, and a fastener 100.

  The box 60 is fixed to the wall 1 around the penetrating portion through which the combustible pipe 2 passes. The box 60 includes a cylindrical or polygonal cylindrical portion 61, a cylindrical fixing portion 62 and a metal anchor 63 that fix the cylindrical portion to the wall 1, and a fastener fixing portion 64 that fixes the fastener 100. The basic configuration of the through-portion sleeve 50 is configured flush with the wall 1 and the non-combustible material filling portion 3 is the same as in the other embodiments.

  Next, operation | movement of the penetration part fire prevention apparatus 10F of Example 6 is demonstrated. The basic operation is the same as in the first embodiment. That is, as shown in FIG. 6, the incombustible material cover 700 is normally opened around the fastener 100 and supported by the combustible pipe 2. A fire occurs in one compartment and the combustible piping 2 on the same compartment side burns. When the combustible pipe 2 is burned and disappears, as shown by an arrow G in FIG. 6, the non-combustible material cover 700 supported on the upper part of the combustible pipe 2 is moved from the position indicated by the broken line around the fastener 100 by its own weight. Fall into position. As a result, the non-combustible material cover 700 is in close contact with the fastener fixing portion 64 of the penetration portion sleeve 50 to protect the penetration portion from fire and prevent the spread of fire to adjacent compartments.

  In the sixth embodiment, similarly to the first embodiment, the non-combustible material cover 700 can be provided with the unevenness 10 and the buffer mechanism 11 in the first embodiment.

  The sixth embodiment can be applied to any of the second to fifth embodiments in addition to the first embodiment. Further, the present invention can be applied without the through-portion sleeve 50 provided flush with the wall.

  In the sixth embodiment described above, as in the first to fifth embodiments, it is possible to prevent the spread of fire to different fire prevention sections and to reduce the number of flanges.

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having 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. Furthermore, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

  Moreover, although the said Example demonstrated the example which provided the nonflammable material cover in the one side of the penetration part, it is possible to attach to the both sides of a penetration part.

1: Wall (floor) 2: Flammable piping 3: Incombustible material filling part
10, 10 to 10F: Through-hole spread prevention device 11: Buffer mechanism 12: Concavity and convexity 50: Through-portion sleeve 60: Box 63: Metal anchor 100: Fastener 200, 300, 400, 500, 600, 700: Non-combustible material cover

Claims (11)

A non-combustible material filling part having a penetration part that is formed of a non-combustible material on a partition structure that is a floor or a wall that partitions different fire prevention compartments, and is in close contact with the flammable pipe;
Having an isolating means for isolating the penetrating part from the fire prevention compartment where a fire is generated when the combustible pipe is burnt off,
The isolation means is formed of a non-combustible material, and is supported by the non-combustible pipe at a normal time without a fire, and a fastener that supports the non-combustible material cover that falls by gravity when the combustion disappears.
The penetration part fire prevention apparatus characterized by having. In the penetration part fire prevention device of claim 1,
A penetrating portion sleeve formed of a noncombustible material surrounding the noncombustible material filling portion;
The fastener is fixed to the penetration sleeve.
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device of claim 2,
The penetrating sleeve extends a predetermined length from the partition structure,
The said isolation | separation means has the said sleeve for penetration parts. The penetration part fire spread prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device of claim 1,
A cylindrical box that is fixed to the partition structure around the incombustible material filling portion and extends in a direction orthogonal to the incombustible material filling portion,
The fastener is secured to the box;
The isolating means comprises the box;
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device of claim 4,
The periphery of the incombustible material filling portion is the periphery of the incombustible material filling portion.
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device in any one of Claims 1 thru | or 5,
The non-combustible material cover has a disk shape,
The fastener is configured to rotatably fix the non-combustible material cover.
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device in any one of Claims 1 thru | or 5,
The incombustible material cover has a shape of a blind or bellows,
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device in any one of Claims 1 thru | or 5,
The non-combustible material cover has the shape of two semi-discs;
The fastener supports the two semicircular plates so that they can be opened and closed left and right.
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention apparatus in any one of Claims 3 thru | or 5,
The partition structure is for partitioning the fire protection compartment up and down,
The non-combustible material cover has a sector shape obtained by dividing a disc into a plurality of sector shapes,
The fasteners rotatably support each fan-shaped arcuate portion,
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device in any one of Claims 1 thru | or 9,
The non-combustible material cover or the combustible pipe has a buffer mechanism at a contact portion where the non-combustible cover is supported.
The penetration part fire prevention apparatus characterized by the above-mentioned. In the penetration part fire prevention device according to any one of claims 1 to 10,
The combustible pipe is a part of a pipe for cooling a condenser mainly in a thermal power plant or a nuclear power plant, or a pipe of a drainage system.
The penetration part fire prevention apparatus characterized by the above-mentioned.

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