JPH01270712A - Sealing device for cable group wall penetrating part - Google Patents

Abstract

PURPOSE:To improve workability by soldering linear cable trays to both ends of a tube material laid in a wall and arranging sheet-shaped putty material, with an interval between at two positions outside the wall penetrating part inside this cable tray as well as laying it between layers of the cable and then filling liquid seal material between these sheet-shaped putty materials. CONSTITUTION:A cable tray 11 is soldered to a tubular material 2 which is laid in advance. Inside this cable tray 11, sheet-shaped putty materials 13 and 14 are laid, with an interval between them, at two positions at the entrance part of a wall through part and a layer consisting of a plurality of cables 4 is laid. Thereafter, on the cable 4 sheet-shaped putty materials 13 and 14 are similarly laid in piles and this is repeated for a plurality of layers. After completion of laying the cable 4, liquid seal material 15 is filled and hardened between the sheet-shaped putty materials 13 and 14, and a putty material 16 is filled in the space between the uppermost cable 4 and the tubular material 2 in order to perform sealing. After completion of the above-mentioned work, a cover 12 is installed and the sealing work is completed.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a device for sealing a portion where a group of cables is housed in a cable tray and penetrates a wall inside a power plant, substation, general building, etc. It is something.

[Conventional technology]

FIG. 3 is a longitudinal sectional side view showing a conventional sealing device for a cable group wall penetrating portion.

In the figure, (1) is a concrete wall, (2) is a steel pipe embedded in the wall (1), and (3) is a ship-shaped pipe (2).
) The cable tray (4) is a cable laid along the bottom shape of the circular cable tray (3), and a plurality of cables (4) are laid in multiple layers. (5) is a liquid sealant filled on the cable (4) recessed in the shape of a ship, (6) is the cable tray (3)
Fireproof insulation material 2 made of rock wool filled inside
(7) is a putty-like sealing material filled before and after the fireproof optical insulation material (6), and (8) is the pipe material (2) and cable tray (3).
) is mortar filled in the gaps between the

A conventional sealing device for a cable group wall penetrating portion is constructed as described above, and is applied to a cable wall penetrating portion that requires airtightness and fire resistance.

That is, the cable tray (3) is placed in the pipe material (2), the cable (4) is laid along the bottom shape of the cable tray (3), and after the cable is laid, the liquid sealant (5) is placed on the cable (4). Fill it on top. After that, fireproofing material (6
), and fill the putty-like sealing material (7) before and after it. Then, the gap between the pipe material (2) and the cable tray (3) is backfilled with mortar (8). The liquid sealing material (5) is used to maintain airtightness, and the cable tray 3) is formed in a boat shape to prevent wave numbers.

[Problem to be solved by the invention]

In the conventional cable group wall penetration sealing device as described above, the cable (4) is laid along the ship-shaped cable tray (3), and the filling operation with the liquid sealing material (5) is also carried out on the wall (1). Because the work is carried out inside the penetration part of the pipe material, the construction is extremely difficult.
2) and the cable tray (3) is difficult to backfill with mortar (8).

This invention was made to solve the above problems, and provides a sealing device for a cable group wall penetrating portion that facilitates cable laying work and sealing material filling work, and has high airtightness and fire resistance. The purpose is to

[Means to solve the problem]

The sealing device for a cable group wall penetration part according to the present invention penetrates and fixes a linear cable tray in a pipe material buried in a wall of a building, and a sheet-like putty material is placed at intervals outside the wall penetration part in the cable tray. The cable is placed in two places and interposed between the layers of the cable, and the space between the sheet putty materials is filled with a liquid sealant.

The gap between the top surface of the cable and the tube material is filled with putty material.

[Effect]

In this invention, a linear cable tray is penetrated and fixed in a pipe material embedded in a wall, and the cable is arranged in this, so that there is no need to bend the cable. Furthermore, filling of each sealing material is performed outside the wall penetration part. Furthermore, since the liquid sealant is filled between the sheets of putty material, the liquid sealant does not leak out.

〔Example〕

1 and 2 are views showing an embodiment of the present invention, FIG. 1 is a longitudinal side view, and FIG. 2 is a sectional view taken along the line II of FIG. Parts are indicated by the same reference numerals.

In the figure, αυ is a linear cable tray that is placed through the pipe material (2) and welded at both ends of the pipe material (2), α2 is a cover that covers the cable tray aυ, a3. α4 is arranged at two locations at intervals along the cable (4) outside the wall penetration part inside the cable tray D, and
The sheet-like putty material interposed between the eyebrows, 0!9 is the sheet-like putty material Q3. (Liquid sealing material filled between 141.

Qfa is a putty material filled in the gap between the cable (4) and the tube material (2) in the top layer.

In the sealing device for the cable group wall penetrating portion configured as described above, construction work is performed according to the following work procedure.

That is, the cable tray aυ is arranged so as to penetrate through the pipe material (2) which has been buried in advance in the concrete wall fl of the building and is welded and fixed to the pipe material (2). Then, within this cable tray υ, sheet putty material (1 m, ti4) was laid at two locations at the entrance of the wall penetration part,
Lay multiple cables (4) in one layer. after that.

Place a sheet of putty material Q1 on top of the cable (4). n
ll is laid in layers, and this is returned to the multi-layer line. After laying the cable (4), putty sheet α3. (14+
During this period, a liquid sealing material 09 is filled and cured, and a putty material a9 is filled into the gap between the uppermost cable (4) and the tube material (2) to seal it. After these operations are completed, the cover a'a is attached and the sealing operation is completed.

In this way, each time the cable (4) is laid, the sheet-like putty material 03. By laying α fathom, the cable (4
) The sealing work can be completed in parallel with the installation.

Since the sheet putty materials (13, (141) form the walls, the liquid sealing material OS for maintaining airtightness filled between the walls is prevented from flowing out. 1) Because the work is outside the penetration and there is no need to bend the cable (4) inside the penetration to make it fit along the conventional ship-shaped cable tray (3).
It is possible to increase safety without any danger associated with the working posture. Furthermore, since the cable tray an is fixed through the pipe material (2), the mortar (8) between the cable tray (3) and the pipe material (2) of the conventional device is not required.

In the above embodiment, the cables (4) installed in the cable tray (Ill) are of the same size.

Even in the case of different sizes, sheet putty material α3. ([4)
Since it has high elasticity and ductility, it can be constructed in the same manner as in the above embodiment.

〔Effect of the invention〕

As explained above, in this invention, a straight cable tray is penetrated and fixed in a pipe material buried in the wall of a building, and sheet-like putty material is placed at two spaced apart locations outside the wall penetration part of the cable tray. arranged and interposed between the layers of the cable,
A liquid sealing material was filled between the sheets of putty material, and the gap between the top surface of the cable and the tube material was filled with putty material.
This has the effect of making cable laying work and sealing material filling work easier and safer. It also has the effect of eliminating the need for mortar used for backfilling between the cable tray and the pipe material.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a sealing device for a cable group wall penetrating portion according to the present invention, and FIG.
A 1-line sectional view and FIG. 3 are longitudinal sectional side views showing a conventional sealing device for a cable group wall penetrating portion. In the diagram, (1) is a concrete wall, (2) is a pipe material, and (4)
is a cable, aS is a cable tray, α(, a4 is a sealing putty material, 0!9 is a liquid sealing material, and aS is a putty material. In addition, the same group number in Figure 1 indicates the same part or a corresponding part.

Claims (1)

[Claims] A linear cable tray in which a plurality of cables are laid in multiple layers through a pipe material buried in the wall of a building, and a linear cable tray in which the cable is arranged and fixed through the pipe material, and a wall penetration part in the cable tray. A sheet-like putty material disposed at two locations at intervals along the cable and interposed between the layers of the cable, a liquid sealant filled between the sheet-like putty materials, and a top layer of the cable. A sealing device for a cable group wall penetrating portion, comprising: a putty material filling a gap with the tube material.