JPH0652110B2 - Fire spread prevention device for cable penetrations in structures - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fire spread prevention device for a cable penetrating portion in a partition forming portion such as a wall, a ceiling or a floor in a structure.

(Prior art) When a fire occurs in a building, tunnel, ship, vehicle, aircraft, etc., when the cable that penetrates the section of the structure and the penetration part of the cable are not provided with appropriate fire spread fire prevention measures. Not only does the cable itself lose its function due to combustion when it spreads to other sections through the same penetration, but the spread of toxic gas and smoke due to fire spreads extensively, resulting in serious damage.

Therefore, as a method for preventing the spread of the cable penetration portion, a construction method of applying or winding a spread fire protection material composed of a flame-retardant material or an incombustible material to the cable that penetrates the penetration portion has been conventionally used.

However, in the above-mentioned conventional method, it is necessary to prepare a fire-extinguishing fireproof material corresponding to the diameter of the cable. If various diameters are mixed and the number of cables increases, a relatively long preparation period corresponding to this is required, and the cable 1 Since the work must be addressed to the book, not only the construction period will be long, but also the fire performance may vary depending on the fatigue of the worker and the degree of skill.

Also, when repair work such as new installation, expansion, replacement and removal of cables is required according to the qualitative and even quantitative changes in the electrical and communication equipment installed in the indoor compartments, the existing fire-extinguishing fire parts should be temporarily removed. After destruction, cable replacement, removal, or extension, it becomes necessary to reconstruct the fire spread prevention part.

For this reason, noise, vibration, and dust generated during construction will be adversely affected during construction, and the fire spread prevention part of the cable penetration will be removed during construction, which will prevent fires during construction. Is unprotected.

Therefore, conventionally, for example, in Japanese Patent Publication No. 63-43512,
In a wall through-hole sealing structure in which a cable is inserted into a through hole of a wall and a sealing material is filled to close the through hole, the sealing material is made of a liquid and a cable for preventing the sealing material from flowing out. A wall through hole sealing structure for a cable has been proposed in which a treatment box is provided so as to cover the through hole in the wall.

[Problems to be Solved by the Invention]

However, when a liquid is used as the sealing material, a chemical reaction occurs between the cable material and the liquid, which deteriorates the cable. Further, vaporization of liquid is unavoidable and must be replenished, and the performance is deteriorated especially by fire, especially by evaporation of liquid. Moreover, liquid may overflow from the processing box due to vibration such as an earthquake. Further, in the event of a fire, the liquid may be vaporized or burned to generate a toxic gas, and the liquid may be heated to generate convection, resulting in heat transmission.

The present invention has been proposed in view of the problems of the above-mentioned prior art, and its object is to easily and quickly construct a cable penetrating portion having a fire-extinguishing fireproof property, and to add, replace, or remove cables. Work is carried out efficiently and in a short period of time. Even during such work, safety against fire can be ensured, and the penetration of the cable penetration part in structures that are not likely to deteriorate or deteriorate the refractory material or adversely affect the cable. The point is to provide a protection device.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a spread-fire preventing device for a cable penetration portion in a structure according to the present invention is designed to penetrate a cable in a partition structure portion of a structure such as a floor, a wall, or a ceiling. A box-shaped flame spread prevention partition made of a non-combustible material is disposed in a part of the cable, and a cable that penetrates the partition structure in a fire-resistant, non-combustible or flame-retardant granular body filled in the partition. The box-shaped fire spread prevention partition body filled with fireproof noncombustible or flame-retardant granules has a vertical partition wall with a cable protection edge protruding from the lower end of the horizontal lid piece. An installed lid is provided, and a cable penetrating space is provided between the partition and the partition so that a cable can pass through the partition into the partition, and both longitudinal ends of the partition are defined by the partition. Collides against the inner wall surface in the longitudinal direction of the body By doing so, it is configured to surely prevent the spread of fire through the penetrating portion.

According to a second aspect of the present invention, a cable protection edge portion is provided at a cable guide edge portion of the opposite side wall pieces in the box-shaped spread prevention section to prevent damage to the cable when the cable is introduced into or pulled out from the cable penetration portion. It is a thing.

According to a third aspect of the present invention, the cable protection portion is composed of a rotating roller portion.

[Action]

According to the present invention, as described above, the box-shaped fire spread prevention partition body arranged in the cable penetration portion in the partition structure portion of the structure is filled with the fire-resistant incombustible or flame-retardant granular material,
A case that penetrates the partition forming section penetrates the same granular body to form a fire spreading and fire prevention section in which the cable is provided with a fire spread and fire prevention property, and the particulate matter adversely affects the cable and deteriorates it. There is no

Further, the granular material does not flow out due to vibration and does not vaporize even in the event of a fire. Further, the granular material has many voids inside and is excellent in heat shielding property, and the thermal conductivity is lowered.

(Examples) The present invention will be described below with reference to illustrated examples.

1 to 6 show an embodiment of the present invention, in which the wall of the body is
The box-shaped fire spread partition (1) is fitted into the through-hole projecting from (A) so as to project inside and outside of the wall (A) and installed on the floor (B). . (B ') is a free access floor arranged on the upper part of the same floor (B), and the cable (C) is drawn between the two.

In the figure, (D) is a cable shaft.

The partition body (1) is a fire-retardant or flame-retardant granular material.
(2) is filled.

The granular material is composed of sand, gravel, non-combustible metal at normal fire temperature, flame-retardant polymer substance, glass, granular substance containing substance imparting flame retardancy to glass, etc. .

The top of the box-shaped spread prevention partition (1) is closed by a lid (3) in which a vertical partition (3b) is vertically installed from the lower surface of the horizontal main piece (3a), and the partition (3b) is the partition. In the body (1), inserted so that there is a gap for cable penetration between it and the lower bottom surface, the longitudinal ends of the partition wall (3b), the inner wall surface at both longitudinal ends of the partition (1). They are in contact with each other.

Furthermore, a cable inlet (4) and a cable outlet (5) are provided on both side walls of the partition (1) facing each other in the width direction.

Thus, the cable (C) in the cable shaft (D) is introduced into the granular body (2) in the compartment (1) through the cable introduction port (4), and the inside of the compartment (1) is Vertical partition between the bottom and the lid (3)
After passing through the gap with (3b), it is pulled out to the floor side through the cable outlet (5).

In order not to damage the cable (C) at the time of introducing and withdrawing the cable (C), the inlet (4) and the outlet (5) of the cable (C) in the partition (1), as well as the lid (3) Vertical bulkhead at (3
The lower edge of b) is formed into a curved surface, or is surface-treated with a substance that reduces friction, or a rotating roller (6) is mounted on the lower end surface of the vertical partition (3b).

The roller (6) is preferably made of metal such as iron that does not melt at normal fire temperatures, or stainless steel that does not rust even after long-term use, or has a chrome-plated finish, as shown in FIG. It may be formed of a cylindrical body or a drum-shaped roller. (See FIG. 19) In FIG. 18, (7) is a bracket for mounting the shaft (8) of the roller.

Further, the inner bottom surface of the partition body (1) is formed into a predetermined slope surface, and the granular body (2) in the partition body (1) is appropriately discharged by a suction device from a drain portion provided at a lower position of the slope surface. Configured to be able to.

In the illustrated embodiment, the box-shaped spread prevention partition (1) installed in the cable penetration portion as described above is filled with the same partition (1) as a fire-resistant or non-combustible granular material (2). ) To cable
Since (C) is penetrated so that it penetrates, the cable (C)
The granules (2) are also filled in the gaps between them, so that even if cables (C) with different diameters are mixed in any proportion, each cable (C) is spread by fire. A fire protection compartment is formed.

Therefore, regardless of the skill of the worker, even if cables (C) having different diameters are mixed, the required fire spread fire prevention performance can be obtained at the cable penetration portion.

Further, even after the fire spread prevention section of the cable is completed, in order to maintain the fluidity of the granular body (2) in the box-shaped fire spread prevention section (1), filling of the granular body (2) is performed. A new cable can be easily penetrated through the section into the partition body (1), the cable can be replaced and removed easily, and the spread of fire can be secured by the granular body (2) during the work. .

7 to 12 show an embodiment in which a through hole is provided in the floor (B), and the partition body (1) is installed on one edge of the floor (B) facing the through hole, and the same partition The horizontal main piece (3a) of the lid body (3) is disposed across the top of the body (1) and the upper part of the through-hole, and the main piece (3a)
Vertical partition (3b) is hung vertically in the granular body (2) in the partition body (1), and the vertical piece (3c) from the end of the main piece (3a).
Is extended, and the lower end of the vertical piece (3c) faces the through hole.
It is supported on the other edge of (B).

The cable (C) is introduced into the granular body (2) in the partition body (1) through the through hole from the lower floor, and penetrates through the gap between the vertical partition wall (3b) and the partition body bottom surface. Later, cable outlet
It is designed to be pulled out from (5).

In the figure, the same parts as those in the above embodiment are designated by the same reference numerals.

Figure 13 shows a cable (C) on the basement floor with a through-hole on the floor (B).
Is shown, which is substantially the same as the embodiment shown in FIG. In the figure, (E) is the ceiling.

In the figure, the same parts as those in the above embodiment are designated by the same reference numerals.

FIG. 14 shows the case where the through-hole is provided at the foot of the ceiling. In the figure, the same reference numerals are given to the same portions as the above-mentioned embodiment.

FIG. 15 shows that the partition (1) is formed into a long box, and the cable inlet (4) and the cable outlet (5) are arranged near both ends in the longitudinal direction of the partition (1). The case where the positions of the lead-in portion and the lead-out portion of the cable (C) are not located on the same vertical plane and are inconsistent with each other is shown.

In the figure, the same parts as those in the above embodiment are designated by the same reference numerals.

FIG. 16 shows a case where the lid of the fire spread prevention partition body (1) is omitted, and the partition body (1) is attached to the through hole of the partition wall (A).
The partition body (1) is installed on the floor (B) so as to be located inside and outside with (A ′) sandwiched between the partition wall (A) and the lower end facing the through-hole, and the granular body (2) is filled. ), The cable (C) is fitted into the partition body (1) from one end edge of the partition body (1) so that there is a gap for cable penetration between it and the inner bottom surface of the fluid body. After being introduced into (2), the gap between the inner bottom surface of the partition (1) and the lower edge of the partition wall (A ') is made to penetrate, and then pulled out from the other edge of the partition (1). It is a thing.

(Effects of the Invention) According to the present invention, as described above, a box-shaped fire spread fire protection partition body made of an incombustible material is arranged in a penetrating portion provided in a partition structure portion of a structure such as a floor, a wall, or a ceiling. By installing a fireproof non-combustible or flame-retardant granular material in the same partition body and making a granular material through a cable that penetrates the partition body, the granular material is also provided in the gap between the cables. As the body fills up, no matter what proportion of cables with different diameters are mixed, a fire-extinguishing fire section is constructed in which each cable is given fire-extinguishing fire resistance.

Therefore, according to the present invention, regardless of the skill of the worker, even if cables having different diameters are mixed, a required fire spread fire prevention performance can be obtained in the cable penetration portion of the structure.

Further, even after the fire-extinguishing compartment of the cable is completed, the granular material inside the box-shaped fire-extinguishing compartment retains its fluidity, so that the new inside of the compartment of the new cable passes through the filling portion of the granule. Penetration extension, cable exchange,
The removal work is easily performed, and the spread of fire is prevented by the granular material filled in the compartment during such work.

Furthermore, according to the present invention, since the partition bodies are filled with granular materials such as non-reactive, fire-retardant or flame-retardant sand, gravel, etc., swelling of the cable does not occur,
Since the reaction with the cable coating material does not occur, deterioration of the cable does not occur.

Further, since the granules do not evaporate, there is no need to replenish them, there is no outflow due to vibration, there is no vaporization in the event of a fire, and the granules contain many voids inside, which is excellent in heat shielding, The conductivity decreases.

Further, since the fine granular material can be easily removed by vacuuming, the cable can be re-laid, and the granular material can be reused after the re-laying of the cable.

According to the invention of claim 2, since the cable protection edges are provided at the cable guide edges of the opposite side wall pieces in the box-shaped flame spread prevention partition, the cable when the cable is introduced into and pulled out from the cable penetration portion. The damage of is prevented.

In the invention of claim 3, since the cable protection edge portion is composed of a rotating roller portion, when the cable is introduced into and pulled out from the cable penetrating portion, the roller portion is rotated to smoothly guide the cable. The cable is reliably prevented from being damaged.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a device for preventing the spread of fire of a cable penetrating portion in a structure according to the present invention, FIG. 2 is a perspective view showing a main portion thereof, and FIG. 3 and FIG. 5 is a front view and a plan view as well as a side view, FIG. 6 is a view VI-VI in FIG. 3, and FIG. 7 is a longitudinal sectional view showing another embodiment of the present invention. Is its perspective view, FIG. 9 and FIG. 10 as well as FIG. 11 is its front view and plan view as well as its side view, and FIG.
View XII-XII view, FIG. 13 and FIG. 14 are vertical sectional views showing other embodiments of the present invention, respectively, and FIG. 15 is a perspective view showing still another embodiment of the present invention. 16 is a longitudinal sectional view showing another embodiment of the present invention, FIG. 17 is a perspective view thereof, FIG. 18 is a perspective view showing a cable protection edge portion, and FIG. 19 is a perspective view showing a drum-shaped rotating roller. is there. (A) …… wall, (B) …… floor, (C) …… cable, (1) …… fire spread fire compartment, (2) …… granular body, (3) …… cover, (3a) ...... Horizontal main piece, (3b) …… Vertical bulkhead, (4) …… Cable inlet, (5) …… Cable outlet, (6) …… Roller.

 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-63-43512 (JP, A) JP-A-57-195983 (JP, A) JP-A-62-18910 (JP, A) Actual development Sho-54- 143099 (JP, U) Actually opened Sho-57-42279 (JP, U)

Claims (3)

[Claims] 1. A box-shaped fire spread prevention partition made of an incombustible material is provided in a cable penetrating portion of a partition forming portion of a structure such as a floor, a wall, a ceiling, and the like, and is fitted into the partition. The box-shaped fire spread prevention in which a cable penetrating the partition structure is made to penetrate in the fireproof noncombustible or flame retardant granular body, and the fireproof noncombustible or flame retardant granular body is filled. The partition body has a lid body in which a vertical partition wall with a cable protection edge is projected from the lower surface of the horizontal lid piece, and both longitudinal ends of the vertical partition wall are inner wall surfaces at both longitudinal ends of the partition body. A device for preventing fire spread of a cable penetration portion in a structure, characterized in that a gap for cable penetration is provided between the lower end portion of the vertical partition wall and the bottom surface of the partition body. 2. A fire spread prevention device for a cable penetration portion in a structure according to claim 1, wherein cable protection edges are formed at cable guide edges of opposite side wall pieces of the box-shaped fire spread prevention partition. 3. The spread prevention device for a cable penetration portion in a structure according to claim 2, wherein the cable protection edge portion is constituted by a rotating roller portion.