JPH0214246Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a fireproof and airtight penetration part of an electric wire cable in a bulkhead.

(b) Prior art and its problems In power plants, substations, plant equipment, etc., the electric wires and cables connected to each device are gathered in one room and then led to the control room.
Many cables pass through the bulkheads of the cable concentration room and control room. Therefore, in the event that a fire occurs in a cable concentration room, it is usually extinguished using carbon dioxide gas, chlorofluorocarbon gas, etc., but if this extinguishing gas and combustion gas leak into the control room through the cable penetrations, the control room There is a risk of secondary disasters such as oxygen depletion and suffocation of workers. Therefore, in order to close such a partition wall penetration part, a structure with high fire resistance and airtightness is required.

Therefore, conventionally, as shown in FIG.
After passing the cable 3 through the through hole 2,
A fireproof sealing material 4 such as rock wool is packed inside, the periphery of both opening surfaces is covered with a fireproof plate 5, and then the space between the fireproof plate 5 and the cable 3 is closed with a fireproof putty 6.

In the conventional structure described above, gaps are likely to be formed between the bundled cables 3, and the sealing material 4 and putty 6 are filled in the gaps.
There is a problem with airtightness because it is difficult to pack.

For this reason, conventionally, as described in JP-A-57-195983, a container is fitted into a through hole and a partition plate is provided to improve airtightness.

However, this technique has the problem that the cable insertion work and the partition plate installation work are cumbersome.

This invention aims to solve the above problems.

(c) Means for solving the problem This invention takes into account the above points, and similarly to the above-mentioned published technology, a container with an opening on the top is fitted into the lower part of the through hole formed in the partition wall, and a container with an opening on the top is inserted into the top surface of the through hole. A partition plate is provided whose lower end reaches into the container and closes the penetration part above the container, and the electric wire cable is inserted from one side of the partition wall through the inside of the partition to the other side, and a reaction hardening seal is installed inside the container. The material is filled to a level higher than the lower end of the partition plate, and the upper surface is covered with fireproof putty, and guide rolls for the electric wire cable are provided on the upper edges of the left and right side plates of the container and the lower edge of the partition plate, and the partition plate is is provided on a support plate applied to the upper surface of the through hole, and flanges are provided on the left and right edges of the support plate to be applied to the side surfaces of the partition wall, and one of the flanges is configured to be freely bendable via a hinge. That's what I did.

(d) Effect The above-mentioned container and partition plate are manufactured in advance at a factory, and this unit is installed at the same time as the through-hole is formed when constructing the partition wall, or it is installed in an existing through-hole, and after passing the electric wire cable through the through-hole, By pouring a liquid reaction-curing sealant into the container, embedding the lower end of the partition plate in the sealant, and curing the sealant, the through hole is completely closed by the partition plate and the sealant, and the sealant is removed. Cover the top with fireproof putty to make it fireproof.

At this time, the electric wire cable is guided by the guide roll and is easily inserted. In addition, the support plate is
One of the flanges is folded and laid down and placed in the through hole, and then the flange is raised and placed against the upper surface of the through hole.

(e) Embodiments Next, embodiments of this invention will be described based on the attached drawings.

As shown in FIG. 2, a container 10 with an open top is fitted into the lower part of a through hole 2 formed in a partition wall 1, and a downward partition plate 11 is provided on the upper surface of the through hole 2. As shown in FIG. The container 10 and the partition plate 11 are made of a fire-resistant material such as iron. The shape of the container 10 corresponds to the shape of the through hole 2. For example, when the through hole 2 is square, it is made into a square box shape as shown in FIG. The container 10 may be attached at the same time as the through-hole 2 is formed when constructing the partition wall 1, or may be fitted into an existing through-hole 2. At this time, as shown in FIG. 2, it is preferable to interpose a fireproof sealing material 12 between the container 10 and the inner surface of the through hole 2.

The partition plate 11 has a container 10 fitted into the through hole 2.
The partition plate 11 is set to a size that closes the upper gap, and as shown in FIG. 3, the partition plate 11 is provided integrally with a support plate 14 with a flange 13, and as shown in FIG. Attach by fitting it into the top surface of the through hole 2 of No.1. The support plate 14 can be supported by various means such as holding it by hand or fixing it with screws. Further, one side of the flange 13 can be folded by a hinge 15 as shown in FIG.
When installing, fold the flange 13 and open the through hole 2.
It is easy to install because it can be inserted into the

The container 10 and the partition plate 11 may not be separate bodies, but may be integrated as shown in FIG. 4. In this case, it is preferable to embed it in the through hole 2 when constructing the partition wall 1.

Further, guide rolls 16 are provided on the lower edge of the partition plate 11 and on the left and right side plates of the container 10 (the side plates on both sides of the partition wall 1).
This allows the cable 3 to be inserted smoothly. Note that the guide roll 16 is omitted in FIGS. 3 and 4.

When the container 10 and the partition plate 11 are installed in the through hole 2, the lower end of the partition plate 11 extends into the container 10. In this state, as shown in Figure 2,
Connect the required number of cables 3 to the container 1 from one side of the bulkhead 1.
0 and penetrate to the other side. As shown in FIGS. 5a and 5b, if the ends of the cable 3 are connected with an L-shaped or curved metal fitting 17 and passed through the partition plate 11 with this metal fitting 17, the cable 3
can be easily inserted.

After passing through the cable 3, a liquid reaction-curing sealant 18 is poured into the container 10 until the lower end of the partition plate 11 is buried therein and cured. Seal material 1
8 includes silicone resin, polyurethane resin,
Chloroprene resin, epoxy resin, asphalt, cement, etc. are used. It may also be a mixture thereof, and a filler such as glass beads may be mixed therein.

Further, the gap between the container 10 and the upper surface of the through hole 2 is filled with rock wool 19, glass wool, and flame-retardant organic fiber, and the outer surface thereof is covered with fire-resistant putty 6 to impart fire resistance.

(f) Effects This invention has the above structure, so the sealing material can easily enter between each cable, completely sealing the cables, and achieving high airtightness. can be used, which has the effect of improving work efficiency.

In addition, since the guide roll is provided, it is easy to insert the electric wire cable, and since the flange of the support plate is bendable, it is easy to attach the support plate.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional fireproof airtight penetration;
The figure is a sectional view of one embodiment of the fireproof airtight penetration part of this invention, Figures 3 and 4 are perspective views of each example of the partition plate/container, and Figures 5a and b are each of the cable passage fittings. FIG. 3 is a front view of an example. 1... Bulkhead, 2... Through hole, 3... Cable,
6... Putty, 10... Container, 11... Partition plate, 1
8...Sealing material.

Claims (1)

[Scope of utility model registration request] A container 10 with an open top is fitted into the lower part of the through hole 2 formed in the partition wall 1, and a partition plate 11 is provided on the upper surface of the through hole 2, the lower end of which extends into the container 10 and closes the upper penetrating portion of the container 10. The electric wire cable 3 is passed through the container 10 from one side of the partition wall 1 to the other side in the left-right direction, and the reaction-curable sealing material 18 is filled in the container 10 to a level above the lower end of the partition plate 11, and the upper surface of the container 10 is At the fireproof airtight penetration part of the electric wire cable coated with fireproof putty 6, on the upper edges of the left and right side plates of the container 10 and the lower edge of the partition plate 11,
A guide roll 16 for the electric wire cable 3 is provided, and the partition plate 11 is provided on a support plate 14 applied to the upper surface of the through hole 2, and the left and right edges of the support plate 14 are applied to the sides of the partition wall 1. A fireproof airtight penetration part for an electric wire cable, characterized in that a flange 13 is provided, and one of the flanges 13 is bendable via a hinge 15.