JP4907499B2 - Fittings for fire compartment penetration - Google Patents

Description

  The present invention relates to a fire prevention section disposed in a through hole of a pipe line drilled in a fire prevention section penetration portion such as a floor or a ceiling of a building so as to connect a vertical pipe of a pipe member made of a thermoplastic synthetic resin material. The present invention relates to a joint for a through portion.

  The fire prevention compartment is an upper and lower partition (slab) such as a floor or a ceiling and a left and right partition such as a wall in an apartment house or the like, and refers to a partition that should not spread fire in the event of a fire. For this reason, in JIS A1304, the structure where the surface temperature on the side where the fire spread of the partition occurs is 260 ° C. or less of the wood ignition temperature is required.

As a prior art regarding such a fire prevention compartment penetration part, there exist some which were indicated by Japanese Utility Model Laid-Open No. 06-7755, for example. That is, the publication discloses a fire prevention structure for suppressing the propagation of flame between the chambers on both sides of the fire prevention compartment. This fire-proof structure is installed with a fire-resistant thermal expansion material retrofitted so that a pipe member made of a combustible thermoplastic material such as vinyl chloride wraps around the pipe member at a part that penetrates the fire-proof compartment penetration part. On the other hand, when a fire breaks out, the thermal expansion material expands due to the heat of the fire and closes the pipeline, thereby blocking communication on both sides of the compartment. In this mounting method, a fire-resistant expansion material is wound around a pipe member, and an expansion holding member, which is a separate member for holding from above, is covered and held.
Utility Kaihei 06-7755 "Building Letter" edited and published by Japan Architecture Center

  However, in such a conventional technique, since the pipe member is limited to a mode in which it penetrates the fire prevention compartment penetration portion, it cannot be used for the joint, and there is a problem that it may be unusable. there were.

  In addition, it is designed to be retrofitted to the pipe member, and in order to hold the heat expansion material having no strength, the expansion holding member which is a separate member must have a special structure, which increases the cost as a member. In addition, there is a problem that the construction takes time and the cost is increased.

  The present invention solves such problems of the conventional technology, provides a joint for a fire-protection section penetration portion having a thermal expansion member that is easy to use and easy to handle and construct, and quickly and reliably. It is an object of the present invention to provide a joint capable of blocking a penetration portion and preventing upward fire spread.

In order to solve the above-described problems, in the present invention, a pipe made of a thermoplastic synthetic resin material is provided in a through-hole (A) of a pipe formed in a vertical direction in a fireproof section such as a floor or ceiling of a building. In the joint (1) for a fire-protection section penetrating portion that is provided with a receiving-end-shaped connection end portion for fitting and connecting the vertical pipe made of the member (P) at the lower side and does not burn by flame , the vertical pipe is connected. The lower receiving end-shaped connection end (15) is provided with a metal expansion holding portion (40) having a ring-shaped groove shape with a groove opened toward the vertical pipe, and a fire-extinguishing portion is formed in the ring-shaped groove shape. A fire-resistant thermal expansion member (45) that expands with heat was accommodated.

  The fire-resistant thermal expansion member (45) housed in the expansion holding part (40) functions to prevent the spread of fire between the fire prevention sections when a fire occurs. In other words, when a thermal condition occurs that may cause a fire to spread, the thermal expansion member (45) expands due to the heat of the fire and closes the pipeline. Thereby, since the continuity between the fire prevention sections is interrupted, the flame is not transmitted and the spread of fire is prevented. Use of a flame retardant rubber composite for the thermal expansion member (45) facilitates handling.

  Further, the metal expansion holding part (40) is arranged to protrude to the indoor side below the surface of the fire prevention compartment and is arranged at the connection end part (15) of the receiving port shape to collect the heat of the fire. Thus, the thermal expansion member (45) is promptly transmitted to ensure reliable thermal expansion. Further, by providing the thermal expansion member (45) so as to directly face the peripheral surface of the vertical pipe, the thermal expansion force concentrates inward, and the pipe line can be reliably closed.

  According to the present invention, even if a fire occurs in the lower chamber of the fire prevention compartment and the vertical pipe made of the thermoplastic synthetic resin material is melted, the connection of the receptacle shape below the joint for fire penetration compartment penetration (1) The thermal expansion member (45) in the ring-shaped groove shape of the expansion holding portion (40) provided at the end portion (15) expands to close the pipe line at the connection end portion (15) below the expansion expansion portion (40). Since the flame can be shut off at the lower end of the provided joint (1), it is possible to prevent the upper pipe member from being damaged by heat damage and spreading from the lower chamber to the upper chamber.

  In addition, by disposing the metal expansion holding part (40) on the connection end part (15) in a state of protruding to the indoor side below the surface of the fire prevention compartment, the heat of the fire generated in the lower room The heat transfer area increases and the thermal expansion member (45) can be rapidly expanded.

  Hereinafter, various embodiments of the present invention will be described with reference to the drawings. 1 and 2 show a first embodiment of the present invention. In these drawings, a fire-blocking section penetrating portion A is used for passing a pipeline through a section screen body F that is a concrete floor or ceiling. It has a configuration in which a through hole F1 is formed. In the through hole F1, pipe members P, P made of a thermoplastic synthetic resin material and the joint 1 and the joint 1 are disposed so as to penetrate the joint 1 in the through hole F1. The fire prevention structure is such that the gap between the joint 1 and the through hole F1 is closed with a fire resistant filler S.

  The joint 1 is formed by coating a synthetic resin core tube 20 with a jacket layer 30 made of a non-metallic noncombustible material, and an intermediate portion 11 of the joint 1 has the same inner diameter as the pipe member P, and is located on the side from the intermediate portion 11. A connection end 12 to which a horizontal pipe similar to the pipe member P is connected is formed on the side, and connection ends 14 and 15 to which the pipe members P and P are fitted are formed vertically.

  The core tube 20 is generally made of a vinyl chloride material, but may be other synthetic resins such as polypropylene. The covering layer 30 is, for example, a fiber-containing mortar, and an example of the composition is ordinary Portland cement 52%, aggregate 25%, inorganic fibers 20%, and organic fibers 3%. In addition, it can be made of ceramic, cement or other materials.

  In the connection end portion 15, the core tube 20 is widened, and an outer fitting end 21 into which the end portion P <b> 1 of the pipe member P is fitted is formed. That is, the connection end 15 is formed in a receiving port shape. The jacket layer 30 is interrupted at the base portion of the outer fitting end 21, and the base portion is fitted on the end portion 35 of the outer jacket layer 30, so that the holding metal fitting 16 formed of a metal material having good heat conductivity extends. It is installed.

  The holding metal fitting 16 forms a center-shaped ring-shaped groove-shaped expansion holding portion 40 into which the pipe member P is fitted. The expansion holding portion 40 extends from the outer periphery of the end portion 35 of the jacket layer 30 and has a tip 41 bent toward the center. The holding piece 41 is held in the groove shape by the holding piece 41 so that the heat of fire A fire-resistant thermal expansion member 45 is mounted so as to expand and close the pipeline so that no flame is transmitted.

  The thermal expansion member 45 is formed by winding a mat or sheet in a cylindrical shape, and the inner circumference is wound around the entire circumference of the pipe line by the outer fitting end 21 of the core tube 20 of the connection end 15. So that the pipe member P is indirectly fitted.

  The thermal expansion member 45 has several types of commercialized compositions, and has, for example, the composition and characteristics shown in FIG. The mat is a ceramic fiber composite material, and the sheet is a flame retardant rubber composite material. There is also a putty.

  Further, as the thermal expansion member 45, there are those shown in FIGS. 8, 9 and 10 disclosed in “Building Letter” magazine published by the Japan Architecture Center, respectively, and manufactured by Furukawa Material Co., Ltd. , Dunseal P and Dunseal FT.

  Next, the operation will be described. The joint 1 of the fire prevention section through portion A is used by being disposed in a through hole F1 of a pipe line drilled in the fire prevention section penetration portion A. The joint 1 is used for building piping made of a thermoplastic synthetic resin material. The pipe members P, P are connected from above and below. Since the synthetic resin core tube 20 is covered with the jacket layer 30 made of a non-metallic incombustible material, the pipe member P is fitted to the outer fitting end 21 of the core tube 20 during construction.

  Since the joint 1 is covered with the outer layer 30 made of nonmetal, it does not itself burn by the flame. The fire-resistant thermal expansion member 45 attached to the expansion holding portion 40 of the connection end portion 15 into which the pipe member P is fitted functions to prevent the spread of fire between the fire prevention sections when a fire occurs. In other words, when a thermal condition occurs that may cause a fire to spread, the thermal expansion member 45 expands due to the heat of the fire and closes the pipeline. Thereby, since the continuity between the fire prevention sections is interrupted, the flame is not transmitted and the spread of fire is prevented. Although the ring-shaped groove-shaped expansion holding portion 40 may be formed by the jacket layer 30, in this embodiment, the expansion holding portion 40 is formed of a metal material having good heat conductivity extending from the jacket layer 30. Therefore, heat transfer to the thermal expansion member 45 is good and expansion is promoted. In this case, since the expansion holding part 40 is provided in the lower connection end part 15, a fire is interrupted | blocked in the lower end of the coupling 1, and the spread of the fire to the upper direction can be prevented.

  The state of the pipeline blockage by the thermal expansion member 45 will be described in more detail with reference to FIG. In the normal state shown in FIG. 1, the pipe line is connected by the joint 1 at the fire prevention section through portion A, and the joint 1 is disposed in the through hole F1 through which the pipe line passes, and the gap between the joint 1 and the through hole F1 is fireproof. The filler is closed by a conductive filler S, and the pipeline is used for drainage, piping, and the like.

  When a fire breaks out from the ceiling or floor fire prevention compartment and the fire spreads out and there is a risk of fire spreading upward through the fire prevention compartment penetration part A, as shown in FIG. The member P starts to soften due to heat, and the core tube 20 of the joint 1 also starts to soften. This heat is also transmitted to the outside of the expansion holding portion 40 of the thermal expansion member 45, and the thermal expansion member 45 starts to expand when it reaches a predetermined temperature or higher.

  The thermal expansion member 45 is in contact with the outer periphery of the pipe member P via the outer fitting end 21 of the core tube 20 of the joint 1, and as shown in FIG. It expands toward the center while crushing the outer fitting end 21 and the pipe member P of the softened core tube 20.

  When the flame approaches and becomes hot, as shown in FIG. 2 (c), the thermal expansion member 45 is sufficiently expanded to reach the center of the pipeline and the pipeline is blocked. At that time, the pipe member P made of synthetic resin is fused. Since the pipe line is closed by the fire-resistant thermal expansion member 45, the through-hole F1 of the fire-proof section fills the gap between the outer cover layer 30 of the joint 1 made of a non-combustible material and the joint 1 and the through-hole F1. It is blocked by the material S and the thermal expansion member 45 so that the flame does not propagate beyond the fire prevention section.

  FIG. 3 shows a second embodiment of the present invention. In the present embodiment, a ring-shaped groove-shaped expansion holding portion 40 formed by the holding metal fitting 16 is provided below the surface of the fire protection compartment at the receiving end-shaped connection end portion 15 for connecting the vertical pipe. In the first embodiment, the thermal expansion member 45 is wound around the outer fitting end 21 while the outer fitting under the thermal expansion member 45 is arranged. The end 21 disappears, and the thermal expansion member 45 directly faces the end P1 of the pipe member P.

  By disposing the ring-shaped groove-shaped expansion holding portion 40 so as to protrude into the room below the surface of the fire prevention compartment, a good heat transfer state to the thermal expansion member 45 is obtained, and the thermal expansion member 45 is directly connected to the pipe line. By facing the end portion P1 of the member P, the expansion becomes more effective.

  FIG. 4 shows a third embodiment of the present invention. The main part of this embodiment is the same as that of the second embodiment, but there is no connection end 12 and a bent pipe 12a is formed upward from the fire prevention compartment penetration part A.

  FIG. 5 shows a fourth embodiment of the present invention. In the present embodiment, the filler S is filled in all the gaps of the through holes F1.

  FIG. 6 shows a fifth embodiment of the present invention. In the present embodiment, the base portion 16b of the holding metal fitting 16 formed of a metal material having good heat conductivity for holding the thermal expansion member 45 in the joint 1 is fitted into the end portion 35 of the jacket layer 30 and extended. It is set. In addition, it is arbitrary to provide the outer layer of the incombustible material also on the outer periphery of the pipe member P.

Sectional drawing which shows the use condition of the coupling which concerns on the 1st Embodiment of this invention Explanatory drawing which shows the effect | action of the coupling which concerns on the 1st Embodiment of this invention. Sectional drawing which shows the use condition of the coupling which concerns on the 2nd Embodiment of this invention Sectional drawing which shows the use condition of the coupling which concerns on the 3rd Embodiment of this invention Sectional drawing which shows the use condition of the coupling which concerns on the 4th Embodiment of this invention Sectional drawing which shows the use condition of the coupling which concerns on the 5th Embodiment of this invention Chart showing physical properties of thermal expansion members Chart showing physical properties of other examples of thermal expansion members Chart showing physical properties of other examples of thermal expansion members Chart showing physical properties of other examples of thermal expansion members

Explanation of symbols

A fire prevention section penetration, F section screen body, F1 through hole, P pipe member, P1 end, 1 joint, 15 connection end, 16 holding bracket, 20 core tube, 21 external fitting end, 40 expansion holding section, 45 thermal expansion member,

Claims (3)

A receiving port type for fitting and connecting a vertical pipe made of a thermoplastic synthetic resin material pipe line, which is disposed in a through-hole of a pipe line drilled in a vertical direction in a fire prevention compartment such as a floor or ceiling of a building. In the joint for fireproof compartment penetrating part that has a connecting end on the bottom and does not burn by flame,
From receptacle shaped connecting end portions of the lower downwardly said longitudinal tubes are connected, the groove toward the vertical tube is protruded expansion holding portion made of a metal having a ring-shaped channel-shaped having an opening arranged, the ring A fireproof compartment penetrating joint characterized in that a fire-resistant thermal expansion member that expands due to the heat of a fire is accommodated in a groove shape.   2. The fire compartment passing portion according to claim 1, wherein the metal expansion holding portion is disposed at the connection end portion of the receiving port so as to protrude to the indoor side below the surface of the fire compartment. Fittings.   The joint for fire prevention compartment penetration part according to claim 1 or 2, wherein said thermal expansion member is provided in direct opposition to the peripheral surface of said vertical pipe.

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