JPH0568556U - Fire-prevention structure for the penetration of a long object in a fire-proof compartment - Google Patents

Abstract

(57) [Summary] [Purpose] To realize a fire protection structure that does not require the use of iron pipes and that plastic sheath pipes do not impair the original function. [Structure] Fireproof partition plates 5 are arranged on both sides of the opening 2 of the fireproof partition 1 in the opening direction, and the elongated body 3 is penetrated through the openings 2 and the insertion holes 4 of the fireproof partition plate 5 so that both fireproof In a fireproof structure for a long object penetrating portion of a fireproof partition formed by filling a refractory material 7 in an inner space 6 surrounded by a flexible partition plate 5, inside the insertion hole 4, the outer periphery of the long body 3 is provided. A plurality of fire protection devices 10 each having a semi-cylindrical heat-expandable refractory material 9 attached to the inner surface of the semi-cylindrical surrounding member 8 were faced to each other and covered and arranged.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is designed to prevent the spread of fire when a long object such as a cable or a synthetic resin pipe is penetrated through an opening in a floor or wall of a building (fireproof partition). The present invention relates to a fireproof structure for a long object penetration part.

[0002]

[Prior Art]

 When a long object such as a cable or pipe is penetrated through the opening of the fire prevention partition, the penetration should be prevented to prevent the fire from spreading from the same long material penetration to the opposite side of the fire protection partition. Have an obligation to take fire protection measures. Conventionally, there are various fire protection structures.

FIG. 6 shows a main structure of conventional fire protection measures. A fireproof partition plate 5 made of calcium silicate is arranged on both outsides of the opening 2 of the fireproof partition 1 through which the elongated body 3 penetrates, and an inner space 6 surrounded by both fireproof partition plates 5 is provided. The inside is filled with a refractory material 7 such as rock wool.

In this case, when the elongated body 3 is a plastic pipe, it is inserted into the noncombustible iron pipe 20 as shown in FIG. Need to be projected (by the Building Standards Law).

When the elongated body 3 is an electric wire cable and the electric wire cable 3 is wired in the plastic sheath tube 21 as shown in FIG. 7, the purpose of cutting the sheath tube 21 is to bother. Heat-resistant putties 22 are packed on both outer sides of the fire-resistant partition plate 5 after cutting.

[0006]

[Problems to be solved by the device]

 The fire protection structure of FIG. 6 has the following problems. When the temperature rises during a fire, the plastic pipe 3 contracts and deforms, creating a gap between the iron pipe 20 and the putty 23 sealed at the open end of the plastic pipe 3, and a cavity is left in the burned-out trace of the plastic pipe 3 due to burning. Hot air, smoke, and flames pass through the cavities, and the fire spreads to the opposite side of the fire prevention compartment 1. It is almost impossible to project the iron pipe 20 on both outer sides of the fireproof compartment by as much as 1 m in a narrow piping and wiring space (EPS).

In the fire protection structure of FIG. 7, since the plastic sheath tube 21 is cut and only the cable 3 is penetrated, there is no problem in fire resistance, but the cable protection function which is the original function of the sheath tube is provided. Also, there is a problem that the function as a guide when the cable 3 is passed through is completely impaired.

The object of the present invention is to eliminate the need to use the iron pipe 21 as shown in FIG. 6, and the plastic sheath sheath pipe of FIG. 7 does not impair its original function. It realizes the fire protection structure.

[0009]

[Means for Solving the Problems]

 The fireproof structure of the long object penetrating portion of the fireproof partition according to the present invention is, for example, when a wall is penetrated, as shown in FIG. The cut plate 5 is arranged, the elongated body 3 is penetrated through the opening 2 and the insertion hole 4 of the fire resistant partition plate 5, and the inner space 6 surrounded by both fire resistant partition plates 5 is filled with the fire resistant material 7. In the fire protection structure for a long object penetrating portion of the fire protection partition, a semi-cylindrical thermal expansion property is formed on the inner surface of the long body 3 inside the insertion hole 4 and on the inner surface of the semi-cylindrical surrounding member 8. A plurality of fire protection devices 10 to which the fire-resistant material 9 is attached face each other and are covered and filled.

[0010]

[Action]

 As shown in FIG. 3, a fireproof structure for a long object penetrating portion of the fireproof compartment of the present invention is arranged with fireproof partition plates 5 on both sides of the opening 2 of the firebreak compartment (wall) 1 in the opening direction. After the elongated body 3 is penetrated through the part 2 and the insertion hole 4 of the refractory partition plate 5, the inner space 6 surrounded by both refractory partition plates 5 is filled with the refractory material 7, and then, as shown in FIG. When two fire protectors 10 are placed on the outer circumference of the scale body 3 so as to face each other, and both fire protectors 10 are connected by a heat resistant wire 11, and then pushed into the insertion hole 4 of the fire resistant partition plate 5 in FIG. The space between the insertion hole 4 and the elongated body 3 is closed. Moreover, since the heat-expandable refractory material 9 of the fire protection device 10 expands due to the heat at the time of a fire, when the elongated body 3 is a plastic pipe, the plastic pipe disappears due to the heat at the time of the fire and expands at the same time. The burned-out traces are blocked and spread of fire is prevented.

[0011]

【Example】

 A fireproof structure for a long object penetrating portion of a fireproof compartment of the present invention will be described in detail with reference to the embodiment of FIG. In the fire protection structure of FIG. 3, fire-resistant partition plates 5 are arranged on both sides in the opening direction of an opening 2 formed in a wall (fire-proof partition) of a building, and the opening 2 and the fire-resistant partition plate 5 are inserted. The hole 4 penetrates the elongated body 3 such as a plastic pipe or a plastic sheath pipe, and the inside space 6 surrounded by the refractory partition plate 5 is filled with a refractory material 7 such as rock wool, and the like. The outer periphery of the elongated body 3 inside the insertion hole 4 is covered with two fire protection devices 10 facing each other. In this case, as shown in FIG. 3, the locking piece 12 of the fire protection device 10 is locked on the inner surface of the fire-resistant partition plate 5.

For example, as shown in FIG. 1, the above-mentioned fire preventive device 10 is formed by attaching a semi-cylindrical heat-expandable refractory material 9 to the inner surface of a semi-cylindrical surrounding member 8 made of a metal plate. The surrounding member 8 must be of a material and structure that can withstand the expansion pressure of the thermally expansive refractory material 9. This is because the fire-side partition plate 3 on the fire side undergoes heat shrinkage during the fire resistance test for about 2 hours, its strength is reduced, and it is damaged when it is directly subjected to the expansion pressure of the heat-expandable refractory material 9. Therefore, the surrounding member 8 is formed in a semi-cylindrical shape as shown in FIG. 2 with an iron plate or the like having high workability and rigidity. Further, the surrounding member 8 is formed such that a semicircular flange-shaped stopper 13 is projected outward at one end in the axial direction and a semicircular receiving edge 14 is projected inward at the other end in the axial direction. A locking piece 12 for locking the fire-resistant partition plate 5 is formed at the lower part in the circumferential direction.

The stopper 13 is engaged with the inner surface of the fire-resistant partition plate 5 when the fire protection device 10 is inserted into the insertion hole 4 of the fire-resistant partition plate 5 as shown in FIG. It is for regulation, the receiving edge 14 supports the heat-expandable fireproof material 8, and the locking piece 12 is inserted into the insertion hole 4 of the fireproof partition plate 5 as shown in FIG. , Fire resistance It is locked to the inner surface of the partition plate 5 to prevent it from coming off or coming off.

As the heat-expandable refractory material 9, for example, “Danseal F” (trade name: manufactured by Furukawa Electric Co., Ltd.) is used. This "Dancele F" is a foam that has already been foamed to some extent, and has a small heat capacity and a high volume foaming rate. Therefore, the heat in the inside is quickly conducted, and the heat rapidly expands and expands greatly. In addition, since it is a foam, it is soft and easy to adapt to the long body C. Further, it has an advantage that it has a very high heat insulating effect because it changes into an ash product having a high heat insulating property after foaming.

As the heat-expandable refractory material 9, “Danshiru D” (trade name: manufactured by Furukawa Electric Co., Ltd.) may be used. This "Danseal D" is a flexible sheet-like material formed by a non-foaming putty-like composition, and has a large heat capacity and a high density. Therefore, the flexible tube (long member C) made of synthetic resin can be crushed by a strong pressing force at a relatively low speed due to foaming, and the inside of the flexible tube is completely closed. Moreover, as in the case of the above-mentioned "Dancel F", after foaming, it changes into an ashed product having a high heat insulating property, so that the heat insulating effect is very high.

Other than the above, examples of the heat-expandable refractory material 1 include Fomox (trade name: Bayer, West Germany), Fire Stop (trade name: Dow Corning, USA), and sheet-like expansion. Intermex L manufactured by Chemie Linz Co., which is a refractory material, and curable heat-expandable fireproof putty (Intermex MW manufactured by Chemiling Co.) can also be used.

If the elongated body 3 such as a plastic pipe line that penetrates the opening 2 of the fireproof partition 1 is securely supported and fixed in the vicinity of the opening 2, the non-hardening type of the heat-expandable fireproof material 9 is used. Even if the heat-expandable fireproof putty is used, there is no risk that the plastic conduit 3 will be shaken or misaligned and the non-curable putty will be deformed.

FIG. 4 shows another embodiment of the fire protection structure for the long object penetration portion of the fire protection compartment of the present invention, in which the fire protection compartment 1 is the floor and the opening 2 is long. It is an example in the case of penetrating a plastic conduit as the body 3. FIG. 4 (a) shows an example in which the fire protector 10 is inserted from above and below into the insertion holes 4 of the fire-resistant partition plates 5 arranged above and below the fire protection partition 1, and FIG. 4 (b) shows below the fire protection partition 1. An example in which the fireproofing device 10 is inserted into the insertion hole 4 of the fire-resistant partition plate 5 arranged from below, and the heat-resistant putty 17 is filled in the insertion hole 4 of the fire-resistant partition plate 5 arranged on the fireproof partition 1. FIG. 4 (c) shows an example in which the fire protection device 10 is inserted from above into the respective insertion holes 4 of the two fire resistant partition plates 5 arranged above and below the fire protection partition 1.

FIG. 5 shows an example in which the long body 3 is frequently used for piping of an air conditioner, and the refrigerant pipe 3 penetrates the floor 1. In this refrigerant tube 3, a flammable heat insulating layer 16 is coated on the outer circumference of a copper tube 15. In this case, a box (housing) 16 made of iron plate embedded inside the opening 2 of the fireproof compartment 1 is filled with a refractory material 7 such as rock wool, and the lower and upper parts of the housing 16 are filled. A fire-resistant partition plate 5 is arranged in the portion, and a fire protector 10 is inserted and fixed in the insertion hole 4 of the fire-resistant partition plate 5.

Reference numeral 18 in FIG. 1 is a connecting piece attached to the upper and lower sides of the front surface in the circumferential direction of the heat-expandable refractory material 9. This is a fire protection member facing both sides of the elongated body 3 as shown in FIG. It is for connecting the members 10 with heat resistant wires 11.

3 to 5 showing the fire protection structure of the present invention, a two-hour fire resistance test according to JIS A1304 was carried out, and as a result, the plastic pipe (long body) 3 was deformed, shrunk, and melted, and at the same time, a fire protection device. The heat-expandable refractory material 9 of 10 expanded inside the enclosing member 8, and the plastic pipe 3 was compressed and closed to prevent the spread of fire. In other words, it was a structure that satisfied the conditions of the fire protection structure according to the Building Standards Act.

[0022]

[Effect of the device]

 The fire protection structure of the present invention has the following effects. Even if iron pipes are not used, since the conditions for fire protection measures according to the Building Standards Law are satisfied, iron pipes are not required, and fire protection structures can be used even in narrow pipes and wiring spaces. Since fire protection can be applied without cutting the plastic sheath pipe as shown in Fig. 7, the original function of the sheath pipe as a guide pipe or cable protection pipe during cable insertion is not impaired. Even if the cable and the plastic pipeline are mixed and penetrate through the opening 2 of the fire protection compartment 1, the fire protection structure can be used as it is. The workability is also good, and the fire preventive tool 10 does not fall off from the insertion hole 4 of the fire resistant partition plate 5.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of a fire protection device for a fire protection structure of the present invention.

FIG. 2 is an explanatory view showing an example of an enclosing member of the fire protection device for a fire protection structure of FIG.

FIG. 3 is a longitudinal sectional view showing an example of a fire protection structure of the present invention.

4 (a), (b) and (c) are vertical sectional views showing various examples of the fire protection structure of the present invention.

FIG. 5 is an explanatory view of another example of the fire protection structure of the present invention.

FIG. 6 is an explanatory view of an example of a conventional fire protection structure.

FIG. 7 is an explanatory view of another example of the conventional fire protection structure.

[Explanation of symbols]

 1 Fireproof Partition 2 Opening 3 Long Body 4 Insertion Hole 5 Fireproof Partition Plate 6 Inner Space 7 Fireproof Material 8 Thermal Expansion Fireproof Material

Claims (1)

[Scope of utility model registration request] 1. A fireproof partition plate 5 is arranged on both sides of an opening 2 of a fireproof partition 1 in the opening direction, and an elongated body 3 is passed through the openings 2 and the insertion holes 4 of the fireproof partition plate 5, In a fireproof structure for a long object penetrating portion of a fireproof partition formed by filling a fireproof material 7 in an inner space 6 surrounded by the two fireproof partition plates 5, the long body 3 inside the insertion hole 4 is used. A plurality of fire protection devices 10 each having a semi-cylindrical heat-expandable refractory material 9 attached to the inner surface of a semi-cylindrical enclosing member 8 are face-to-face covered and filled in the outer circumference of the enclosure. Fire protection structure for long body penetrations.