JPH083814Y2 - Fire protection structure for flammable pipe penetrations in compartments - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The fireproof structure of the flammable pipe penetrating portion of the partition of the present invention is constructed in the penetrating portion where the flammable pipe such as a plastic pipe penetrates the partition such as the floor or wall of the building.

[Prior art]

When a flammable pipe is penetrated through a building division, it is obliged to take fire protection measures after the penetration. Conventionally, one of such fire protection structures is shown in FIG. In this fire protection structure, a flammable pipe C is covered with an inorganic refractory material D, and a fire resistant pipe (trade name Tomiji Pipe) E is passed through a through hole F of a partition A such as a floor or a wall.
The gap between the through hole F and the refractory pipe E is backfilled with mortar or the like G. According to this fire protection structure, the combustible pipe C is covered with the inorganic refractory material D so that it does not burn even if a fire occurs, but since the inorganic refractory material D does not always have sufficient heat insulation, C deforms or melts due to heat. Moreover, even if the heat insulation of the inorganic refractory material D is sufficient,
Because of this, the air permeability between the flammable pipe C and the inorganic refractory material D is deteriorated, so that the flammable pipe C is simmered due to lack of oxygen, and a large amount of smoke is emitted from the flammable pipe C. The generated smoke passes through the flammable pipe C and diffuses into the adjacent room, and the damage caused by the smoke spreads. Further, in the fire protection structure of FIG. 5, the fire resistant pipes E are connected to each other by using the separate joint member H, and the end portion of the joint member H is sealed with the seal material I. Has a problem that smoke easily leaks from this seal portion because the fireproof performance is incomplete. In order to solve these problems, the applicant of the present invention has previously developed a fire protection structure for the penetrating portion of the flammable pipe as shown in FIG. This fire protection structure for the penetration portion is such that after the flammable pipe C is pierced through the penetration hole F opened in the partition A, the foaming flameproof flame resistance is provided in the gap between the flammable pipe C and the penetration hole F. The material J is filled to close the gap. According to this fire protection structure, the flammable pipe C is softened / melted and deformed by the heat of the fire, and at the same time, the foamable flame resistant material J is foamed / expanded to deform the combustible pipe C. The resulting gap is closed and the diffusion of smoke and flame to the outside is prevented. When the momentum of the fire becomes strong, the heat-foamable flame resistant material J further expands and expands to crush the combustible pipe C, completely closing the voids generated by the combustible pipe C burning and disappearing, and spreading the fire. To prevent. Moreover, this heat-foamable flame-resistant material J foams and expands, and eventually transforms into a refractory ash material having a high heat insulating effect, so that it is possible to prevent the heat from propagating to the next room, which has many advantages. There is.

[Problems to be solved by the device]

In the fire protection structure shown in FIG. 6, the heat-foaming flameproof material J is approximately 120
When it exceeds ~ 250 ° C, it foams and starts to expand, but when the flammable pipe C is a plastic pipe with a large diameter (75 A or more), the heat-foamable flame resistant material J is sufficiently foamed and expanded to the same level. It takes a considerable time to completely crush the flammable pipe C. Further, in order to completely crush the large-diameter flammable pipe C, it is necessary to use a heat-foamable flame-resistant material J having a large coefficient of thermal expansion, but such a heat-foamable flame-resistant material J generally has a heat capacity. Since it is large and it takes time to reach the expansion start temperature, there is a problem that smoke and flame diffuse through the combustible pipe C within the required time, and at the same time, the combustible pipe C is damaged. In order to solve such a problem, it is considered that a large amount of the heat-foamable flameproof material J is filled in the gap between the flammable pipe C and the through-hole F. Since the flameproof material J is relatively expensive, the cost is high. Moreover, in order to fill a large amount of the heat-foamable flame resistant material J, the through hole F
Therefore, the construction becomes difficult, the strength of the partition A in which the through hole F is opened is reduced, and the appearance after construction is poor, which causes various problems.

[The purpose of the device]

The object of the present invention is to provide a sufficient fireproof effect by preventing the diffusion of smoke quickly and reliably even at the penetration part where a flammable combustible pipe with a large diameter is penetrated, and it is easy and inexpensive to construct. It is intended to provide a fireproof structure for a penetrating portion of a flammable pipe in a body.

[Means for Solving the Problems]

As shown in FIGS. 1 to 4, the fireproof structure of the flammable pipe penetrating portion in the partition of the present invention is a partition A such as a floor or a wall.
The refractory cylinder 1 is fixed through the through-hole F, and a flammable pipe C such as a plastic pipe is penetrated into the refractory cylinder 1 and protrudes from the partition A of the refractory cylinder 1. When a portion of the flammable pipe C protruding from the fire-resistant cylinder 1 disappears when a fire occurs, the portion is rotated by its own weight or the weight of the weight 4 to automatically open the opening 2 of the fire-resistant cylinder 1. It is characterized in that a fireproof valve 3 for closing the valve is attached.

[Action]

In the fireproof structure of the flammable pipe penetrating portion of the compartment of the present invention, the fireproof valve 3 is attached to the fireproof cylinder 1 through which the flammable pipe C is penetrated as shown in FIG. Since the weight 4 is attached to the fire prevention valve, if the portion of the flammable pipe C protruding from the refractory cylinder 1 melts or burns and disappears when a fire occurs, as shown in FIG. 3 rotates in the direction of arrow z in the figure due to the weight of the weight 4 and automatically closes the opening 2 of the refractory cylinder 1, so that smoke or flame passing through the inside of the refractory cylinder 1 to the outside. Is prevented from spreading. In the fire protection structure of the flammable pipe penetrating portion in the partition body of another example of the present invention, the flammable pipe C is attached to the fire resistant tubular body 1 penetrating the wall A as shown in FIG. When the portion of the flammable pipe C protruding from the refractory cylinder 1 disappears in the event of a fire, the valve 3 is rotated by its own weight to the position of the phantom line in the figure and the opening of the refractory cylinder 1 is opened. Since 2 is automatically closed, the diffusion of smoke and flame to the outside through the inside of the fireproof tubular body 1 is prevented.

【Example】

FIG. 1 shows an embodiment of a fireproof structure for a penetrating portion of a flammable pipe in a partition according to the present invention. A shown in the figure is a compartment such as a floor. C is a flammable pipe such as a plastic pipe that penetrates the partition A. In this embodiment, C has a relatively large diameter.
More than A is used. The flammable pipe C is fixed to the brackets 11 projecting from the floor 10 at the upper and lower parts of the partition A by using U-shaped bolts 12. Reference numeral 1 is a fire resistant cylinder made of a non-combustible material such as metal. The refractory cylinder 1 is inserted into the through hole F formed in the partition A, and then the gap between the refractory cylinder 1 and the through hole F is backfilled with concrete 13 to be fixed. The flammable pipe C is pierced through the inside thereof. Edge portions are formed on the inner peripheral surfaces of the upper end opening and the lower end opening 2 of the refractory cylinder 1, respectively.
14 is projected inward. In addition, 15 shown in the same figure
Is a whisker-shaped protrusion projectingly provided on the outer periphery of the fire-resistant cylindrical body 1. By embedding this protrusion 15 in concrete 13, the fire-resistant cylindrical body 1 is firmly fixed in the concrete 13. , So that it doesn't shift. Reference numeral 3 shown in the figure is a fireproof valve which is a feature of the fireproof structure of the plastic pipe penetration portion of the present invention. This fire valve 3
Of the refractory tubular body 1 from the position of the solid line in FIG. 1 to the position of the phantom line on the supporting portion 25 protruding from the edge of the opening 2 of the downward protruding portion with the supporting shaft 20 as the center. It is mounted so that it can rotate. Reference numeral 4 shown in FIG. 1 is a weight, which rotates the fireproof valve 3 when the portion of the flammable pipe C protruding from the refractory cylinder 1 disappears due to combustion or melting in the event of a fire. The lower end opening 2 of the refractory cylinder 1 is automatically closed. The weight 4 of this embodiment is attached to a weight attachment portion 23 that is provided on the fire protection valve 3 so as to project on the side opposite to the fire protection valve 3. As a result, the fireproof valve 3 is always rotated upward and is normally in contact with the portion of the flammable pipe C projecting downward from the fireproof cylinder 1 as shown by the solid line in FIG. When this portion disappears, the fire preventive valve 3 closes the opening 2 by covering the lower end surface of the refractory cylinder 1 as shown by the phantom line in the figure. In addition, an annular protrusion 26 that fits into the opening 2 of the fireproof cylinder 1 is formed on the inner surface of the fireproof valve 3, and a fireproof sealing material 27 is attached to the tip of the protrusion 26. As a result, as shown in FIG. 2, when the fireproof valve 3 comes into contact with the lower end surface of the fireproof tubular body 1, the fireproof sealing material 27 causes the protrusion 26 and the edge 14 on the lower end side of the fireproof tubular body 1 to come into contact. Keep it in close contact with the partition A
The lower part and the upper part are completely cut off. Reference numeral 5 shown in FIG. 1 is the refractory cylinder 1 and the flammable pipe C.
It is a heat-foamable flame-resistant material filled in the gap between and. The heat-foamable flame-resistant material 5 foams and expands when the temperature of the fire rises and the flammable pipe C is crushed from the outside to close the inside of the fire-resistant cylinder 1. Foaming
This is for suppressing the propagation of heat to the adjacent chamber side by converting the expanded portion into an ashed substance having a high heat insulation effect. As the heat-foamable flame resistant material 5, for example, Dunseal D (trade name: manufactured by Furukawa Electric Co., Ltd.) is used. Since the Dunseal D expands quickly when heated, the flammable pipe C
The gap created by shrinkage, melting, burning, and disappearance is surely closed. In addition, since it is a foam, it is soft and easily adapts to the outer surface of the flammable pipe C. Further, the expanded outer surface changes into an ash product having a high heat resistance, which has an advantage that the heat insulating effect is very high. In addition to the above, examples of the heat-foamable flame-resistant material 5 include Intermex MW or L (trade name: Chemie Linz, Austria) and Fire Stop (trade name: Dow Corning, USA). The fire protection structure of the present invention can be similarly applied to the penetrating portion where the combustible pipe 1 penetrates the partition A such as a wall as shown in FIG. As shown in the figure, when the fireproof valve 3 is normally rotated downward and is normally in contact with the protruding portion of the flammable pipe C, if the protruding portion disappears when a fire occurs, the fireproof valve 3 Since the opening 2 of the refractory cylinder 1 can be closed by its own weight, the weight 4 and the weight mounting portion 23 for mounting it are unnecessary.

[Effect of device]

The fireproof structure for the penetrating portion of the flammable pipe in the partition of the present invention has the following effects. a. Since the fireproof valve 3 is attached to the fireproof cylinder 1 through which the flammable pipe C penetrates, the portion of the flammable pipe C protruding from the fireproof cylinder 1 melts or burns when a fire occurs. If the fireproof valve 3 disappears, the fireproof valve 3 is rotated by the weight of the weight or by its own weight to open the opening 2 of the fireproof cylinder 1.
Since it automatically closes, smoke and flame can be completely prevented from leaking and spreading to the outside.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a fireproof structure of a flammable pipe penetrating portion in a partition body of the present invention, FIG. 2 and FIG.
The figure is an illustration of the state of the fire prevention structure of Fig. 1 when a fire occurs,
FIG. 4 is a vertical cross-sectional view showing another embodiment of the fireproof structure for the flammable pipe penetration in the partition of the present invention, and FIG. 5 is an example of the fireproof structure for the flammable pipe penetration in the conventional partition. FIG. 6 is a vertical sectional view showing another conventional fire protection structure. 1 is a refractory cylinder 2 is an opening 3 is a fireproof valve 4 is a weight A is a partition C is a flammable pipe F is a through hole

Claims (1)

[Scope of utility model registration request] 1. A refractory cylinder 1 is penetrated and fixed in a through hole F of a partition A such as a floor or a wall, and a flammable pipe C such as a plastic pipe is penetrated into the refractory cylinder 1 to provide the same fire resistance. Cylinder 1
When the portion of the flammable pipe C protruding from the refractory cylinder 1 disappears in the portion protruding from the partition A of the partition body A, it rotates by its own weight or the weight of the weight 4 to rotate the same. Fire valve 3 for automatically closing the opening 2 of the body 1
A fireproof structure for a penetrating portion of a flammable pipe in a partition body, wherein