KR20210000201A - Fireproof shielding and fire extinguisher of cables for cable trays - Google Patents

Abstract

The present invention relates to a fireproof shielding and fire extinguishing device of a cable for a cable tray which safely protects a cable neatly installed on the cable tray suspended from a ceiling of a building from fire. The cable is wrapped by a fireproof jacket to be protected from the fire, and when an unexpected fire occurs, the fire can be detected and extinguished quickly. To this end, by installing strands of cables (110) and a heat detection tube (120) laid on an upper part of the cable tray (100), the heat detection tube (120) is connected to a fire extinguishing agent container (130) and a metal pipe, and the cable (110) and the heat detection tube (120) are wrapped and protected while overlapping a connection portion of the fireproof jacket (140) having a unit length.

Description

Fireproof shielding and fire extinguisher of cables for cable trays}

The present invention relates to a fire shield and fire extinguishing device for cables for cable trays that safely protect cables that are neatly installed in a cable tray installed to be suspended from the ceiling of a building from fire, and more specifically, to wrap the cable with a fire jacket to prevent fire. It relates to a fire shield and fire extinguishing device for cables for cable trays that protects against fire, as well as detects when an unexpected fire occurs and quickly extinguishes the fire.

In general, when buildings such as high-rise buildings, department stores, hospitals, etc. are newly constructed, various cables such as wires or communication cables are wired inside the building, but the wires or communication cables are wired directly exposed, or ducts, trays, and pipes are installed. It will be installed using.

When installing various cables using cable ducts or cable trays as described above, generally, while connecting cable ducts or cable trays continuously, install them so that they are suspended directly below the ceiling to keep the cables neatly inside the cable duct or cable tray. Accept.

1 is a perspective view showing a general cable tray, in which side rails 16 and 17 positioned side by side at intervals are connected by a rung 15 to constitute a cable tray 10, the side rails (16) Both ends of the support pipe (14) for supporting the lower side of (17) are suspended from the ceiling by bolts (11) (12), and the support pipes (14) and bolts (11) are attached to the nuts (13a) (13b). ) (12) is to be fixed.

In addition, cables (not shown) are laid on the rung 15 of the cable tray 10 at regular intervals, and then the cable is fixed to the rung 15 using a binding band to prevent the cable from moving.

However, since the conventional cable tray 10 has a structure that is open in the lengthwise direction of the cable installation direction, it is exposed to the risk of fire, and if a fire occurs in the cable inadvertently, it follows the cable installation direction. As the flame spreads, there was a problem that the fire spread rapidly.

In view of the above problems, when a fire occurs in the cable tray, a device has been developed to extinguish a fire by spraying extinguishing water while suppressing the fire from spreading along the installation direction of the cable. Patent No. 1499023 (2015.02.27) It has been registered as.

Figure 2 is an exploded perspective view showing a conventional cable tray fire spread prevention device, Figure 3 is a perspective view of the assembled state of Figure 2, Figure 4 is a side view showing a part of Figure 3 in cross section, vertical plates 32, 34 and Both ends of the cross beam 30 having an H-shaped cross section with a flat plate 36 are welded to the inside of the side rails 20 and 22, and the fire-resistant block 40 for supporting the cable 24 is cross beam 30 ) Installed above.

The fireproof block 40 has a vertical partition wall 42 positioned between the cables 24 at regular intervals and has a U-shaped support groove 44a supporting the lower half of the cable 24. Horseshoe-shaped ribs 44 are formed between the vertical partition walls 42 in a perpendicular direction.

The horseshoe-shaped ribs 44 are formed with a plurality of spaced apart in the length direction of the cable 24, and a vertical guide for guiding the side end of the cable pressing plate 50 between the horseshoe-shaped ribs 44 A groove 46 is formed.

Fastening holes (32a) (34a) are formed in the vertical plates (32) (34) formed in the cross beam (30), and the tapping hole (32a) (34a) and the center of the fireproof block (40) are aligned Since the hole 45 is formed, the bolts 31 and 33 are inserted into the fastening holes 32a and 34a, and then the fireproof block 40 is fixed to the cross beam 30 by coupling it to the tapped hole 45. .

The cable pressing plate 50 has U-shaped contact grooves 52 and 54 that are in close contact with the upper half of the cable 24, and side rails 20 are provided at both ends of the channel spring cover 60 with both ends open. ) (22), the L-shaped screw coupling portions 62 and 64 are formed, so that the fire protection plates 66 and 68 formed on the spring cover 60 are placed in front of the fire block 40, It is configured to form a fire extinguishing space (G) on the inside of the spring cover 60 as shown in FIG. 5 in close contact with the rear surface.

Through-holes 62h and 64h are formed in the screw coupling portions 62 and 64, and a screw hole whose center is aligned with the through-holes 62h and 64h at the upper end of the side rails 20 and 22 (20t) (22t) are formed, and after inserting the screw 63 through the through holes 62h and 64h, the spring cover 60 is coupled to the screw holes 20t and 22t, so that the spring cover 60 is attached to the side rails 20 ( 22).

Extension plates (37a) (37b) formed longer upward from both upper ends of the vertical plates (32, 34) formed in the cross beam (30) are integrally formed with the vertical plates (32, 34), and spring Another extension plate (69a) (69b) that is formed longer from both sides of the lower end of the fire protection plate (66) (68) formed on the cover (60) is integrally formed with the fire protection plate (66) (68). The space formed between 40 and the side rails 20 and 22 is covered by extension plates 37a, 37b, 69a, and 69b.

A preload spring (70) is installed between the spring cover (60) and the cable pressing plate (50), and the upper end of the vertical plates (32, 34) and the lower end of the fire protection plates (66) (68) have a semicircular cut (32c). )(34c)(66c)(68c) are formed respectively so that the ceramic nozzle 82 that sprays fire extinguishing water (W) toward the cable 24 is installed at the lower end of the heat-resistant fire-fighting pipe 80 with a spring cover 60 And the preload spring (70) and inserted into the slide hole (56) formed in the cable pressing plate (50), the heat-resistant fire fighting pipe (80) is connected to the branch pipe (84) connected to the supply pipe (86) have.

Therefore, after inserting the heat-resistant fire-fighting pipe 80 into the welding hole 65 formed in the spring cover 60, the part where the spring cover 60 and the heat-resistant fire-fighting pipe 80 meet are welded to each other, and the slide hole 56 and By placing a loose gap between the heat-resistant fire-fighting pipes 80, the cable pressure plate 50 can be moved in the up and down directions while the heat-resistant fire-fighting pipe 80 is fixed.

The inner ceiling of the spring cover 60 has an annular protrusion 61 concentric with the welding hole 65 to prevent the upper end of the preload spring 70 from deviating to the side, and the cable pressing plate 50 A spring sheet 57 concentric with the slide hole 56 is formed to support the lower end of the preload spring 70.

Therefore, when a fire occurs in the cable 24 installed in the cable tray, heat is transferred to the cable core as the insulation sheath of the cable 24 burns in the direction of the cable installation, and the copper cable core is insulated because of its high thermal conductivity. It transfers heat farther and farther than the sheath, causing the flame to melt before moving to the surrounding insulating sheath.

As described above, when the insulating sheath of the cable 24 located in the fire extinguishing space G of the spring cover 60 melts, the cable pressing plate 50 pressing the upper side of the cable 24 becomes elastic of the preload spring 70 Since it is pushed downward by the restoring force and descends along the vertical guide groove 46, the insulating sheath of the melted and flexible cable 24 is pressed by the cable pressing plate 50 and thinned, thereby blocking flame propagation through it.

At this time, the horseshoe-shaped rib 44 supporting the lower half of the cable 24 and the cable pressing plate 50 pressing the upper half of the cable 24 form multiple spaces while pressing and pressing in several places of the cable 24 Therefore, the flame blocking efficiency increases.

In addition, since the heat-resistant fire pipe 80 is loosely coupled to the slide hole 56 formed in the cable pressing plate 50, the heat-resistant fire pipe 80 does not move in place, and only the cable pressing plate 50 moves downward. do.

In addition, it is possible to block the propagation of the flame to the side by the fire protection plates 66 and 68 formed on the spring cover 60, and in particular, the side rails are provided by the extension plates 37a, 37b, 69a, and 69b. (20) The flame that is about to propagate through the space formed between (22) and the fireproof block (40) is blocked.

On the other hand, when a fire generated in the cable tray is detected by a fire detection sensor (not shown), the fire water (W) is supplied by the control unit to the heat-resistant fire fighting pipe 80 through the supply pipe 86 and the branch pipe 84. Since the fire extinguishing water (W) is pumped through the ceramic nozzle (82), it is ejected from the top of the cable (24) located in the fire extinguishing space (G) to extinguish the fire attached to the insulation sheath of the cable (24). do.

(Prior technical literature)

(Patent Document 0001) Republic of Korea Patent Publication 10-1499023 (registered on February 27, 2015)

(Patent Document 0002) Republic of Korea Patent Publication 10-0674499 (registered on January 19, 2007)

(Patent Document 0003) Republic of Korea Patent Publication 10-0706694 (registered on April 5, 2007)

(Patent Document 0004) Korean Registered Patent Publication 10-0738470 (registered on 2007.07.05.)

(Patent Document 0005) Republic of Korea Patent Publication 10-0908408 (Registered on July 13, 2009)

However, such a conventional device has several problems as follows.

First, since the cables laid in the cable tray are exposed to the outside, there is a risk of deliberate fire prevention by an external intruder.

Second, even if a fire occurs in the cable, the spring cover at the point where the cable is melted falls due to the resilience of the preload spring, as several cables melt at a time difference, but the spring cover where the less melted cable is located does not descend, so the fire spreads. Had a fatal flaw.

Third, if a fire does not occur in the cable but inside the building, it is impossible to prevent the cable from being burned.

The present invention was conceived to solve such a problem in the related art, and prevents fire prevention by completely wrapping the cable installed in the cable tray with a fire jacket, and at the same time preventing the phenomenon that the cable is damaged even if a fire occurs inside the building. Its purpose is to be able to fundamentally solve it.

Another object of the present invention is to install a heat detection tube that melts when a fire or heat is generated inside a fire protection jacket surrounding a cable, and spray a fire extinguishing liquid from the inside of the fire protection jacket so that the cable can be safely protected from fire.

Another object of the present invention is to install a linear detector that detects fire inside the fire jacket so that firefighters can be sprayed to the outside of the fire jacket when a fire occurs inside the building to safely protect the cable wrapped in the fire jacket while protecting the fire. To be able to suppress it.

According to an aspect of the present invention for achieving the above object, several cables and heat sensing tubes are installed on the upper part of the cable tray, so that the heat sensing tube is connected to a fire extinguishing agent container and a metal pipe, and the cable and heat sensing tube There is provided a fire shielding and fire extinguishing device for a cable for a cable tray, characterized in that the connection parts of the fire protection jacket having a unit length are overlapped and protected.

The present invention has several advantages compared to the prior art.

First, several cables laid in the cable tray are wrapped with a fire jacket, so that the cables can be safely protected from artificial fire prevention by external intruders.

Second, even if an unexpected fire occurs, a fire occurs inside the fire jacket due to a short circuit of the cable, or even if a high temperature occurs, the heat detection tube melts and the fire extinguishing liquid is sprayed from the inside of the fire jacket. This prevents the phenomenon of spreading.

Third, since the fire protection jackets surrounding the cable and the heat sensing tube are overlapped with each other in unit length, the cable is exposed to the outside when the fire protection jacket of the part to be maintained is separated, so that the maintenance work of the cable becomes easier.

1 is a perspective view showing a typical cable tray
Figure 2 is an exploded perspective view showing a conventional cable tray fire spread prevention device
Figure 3 is a perspective view of the assembly state of Figure 2
Figure 4 is a side view showing a part of Figure 3 in cross section
5 is a cross-sectional view taken along line A-A of FIG. 4
6 is a schematic diagram showing an embodiment of the present invention
7 is a schematic diagram showing another embodiment of the present invention
8 is a schematic diagram showing another embodiment of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various forms and is not limited to the embodiments described herein. Note that the drawings are schematic and have not been drawn to scale. Relative dimensions and ratios of parts in the drawings are exaggerated or reduced in size for clarity and convenience in the drawings, and any dimensions are illustrative only and not limiting. In addition, the same reference numerals are used to indicate similar features to the same structure, element or part appearing in two or more drawings.

Figure 6 is a schematic diagram showing an embodiment of the present invention, the present invention is a plurality of cables 110 and a single strand of heat sensing tube 120 is laid on the top of the cable tray 100 installed to be suspended from the ceiling There, the heat detection tube 120 is connected to the fire extinguishing agent container 130 and a metal pipe (not shown), and the cable 110 and the heat detection tube 120 are fire jacket 140 having a unit length It is designed to be wrapped and protected while overlapping the connecting parts of each other.

However, it is understandable that the fire jacket 140 can be installed to surround the cable 110 and the heat sensing tube 120 as well as the cable tray 100.

Since the cable 110 and the heat sensing tube 120 are wrapped with a fire jacket 140, the cable 110 can be safely protected from artificial fire prevention by an external intruder.

The heat sensing tube 120 wrapped with the fire jacket 140 together with the cable 110 may be installed in a straight line, but it is more preferable to install it in a zigzag as shown in FIG. 6 shown as an example.

This is to enable rapid response of heat generation or fire occurrence in a wide range of the cable 110 wrapped in the fire jacket 140.

The fire jacket 140 surrounding the cable 110 and the heat sensing tube 120 is formed of a material having heat resistance, such as fiber giess, and has a unit length (about 2 to 5 m), and has a bag shape. It is designed to be detachable by Velcro or zippers (not shown) at both ends to facilitate workability and maintenance.

A linear detector 150 for detecting a fire ignited from the cable 110 is further installed inside the fire jacket 140, and a fire occurs on the top of the cable tray 100 as shown in FIG. 7 shown in another embodiment. A sprinkler 160 is installed that is controlled by a city control panel (not shown) to spray fire water.

Accordingly, even if an unexpected fire occurs inside the building, fire water is sprayed from the top of the fire protection jacket 140 to extinguish early, thereby preventing the phenomenon that the cable 110 wrapped in the fire protection jacket 140 is burned out. You can expect the possible effect.

8 is a schematic diagram showing another embodiment of the present invention, the cable 110 and the heat sensing tube 120 installed in the cable tray 100 are wrapped with a fire jacket 140 and then the top of the cable tray 100 In the figure, a separate cover 170 covers them as a whole.

Accordingly, as well as protecting the cable 110 from fire, it is possible to more safely protect the cable 110 from fire in the building.

The operation of the present invention will be described as follows.

First, after the cable 110 of several strands is laid on the upper surface of the cable tray 100 installed to be suspended from the ceiling of the building, the heat sensing tube 120 melted by high heat (about 105°C) is connected to the cable 110. It is installed on the upper surface of, but the heat sensing tube 120 may be installed in a straight line, but it is more preferable to install it in a zigzag so as to react quickly by high heat in a wide range of the cable 110.

As described above, after the cable 110 and the heat detection tube 120 are installed on the upper part of the cable tray 100, a linear detector 150 that senses high heat or fire inside the fire jacket 140 is further installed. Next, they are wrapped with a fire jacket 140 having a unit length, and they are installed so as to overlap each other at the connection part of the fire jacket 140 surrounding them, so that the cable 110 as well as the heat sensing tube ( 120) and the linear sensor 150 are safely protected.

In addition, at the top of the cable tray 100, when a fire occurs inside the building, a sprinkler 160 that is controlled by a control panel (not shown) to spray fire water is further installed, or the cable tray 100 In the upper part of the cover is covered with a separate cover 170 as a whole.

In this state, since the cable 110 is protected by the fire jacket 140, artificial fire prevention by an external intruder is prevented in advance.

However, if high heat is generated inside the fire jacket 140 due to a short of the cable 110 or a fire occurs, the heat sensing tube 120 installed over a wide range of the cable 110 generates high heat. Since the extinguishing solution is rapidly melted at the point where the fire extinguishing agent is ejected from the extinguishing agent container 130, the high heat generated inside the fire jacket 140 as well as the fire is extinguished early, so the cable 110 installed in the cable tray 100 It minimizes the phenomenon that the whole is damaged or burned out.

As described above, when high heat or fire occurs inside the fire jacket 140, the linear detector 150 installed together with the heat detection tube 120 detects this and notifies the control panel to sound the siren and at the same time, the sprinkler 160 Since the fire water is sprayed, the cable 110 can be more safely protected.

On the other hand, if the cable 110 is short-circuited or maintenance is required, the fire jacket 140 surrounding the area is separated and removed, and then the maintenance work is completed and the removed fire jacket 140 including the cable 110 Since the heat sensing tube 120 and the linear sensor 150 are wrapped, their maintenance work becomes easy.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains can understand that it can be implemented in other specific forms without changing the technical idea or essential features. will be.

Therefore, the embodiments described above should be understood as illustrative and non-limiting in all respects, and the scope of the present invention described in the detailed description is indicated by the claims to be described later, and the meaning of the claims and It should be construed that all changes or modifications derived from the scope and equivalent concepts are included in the scope of the present invention.

100: cable tray 110: cable
120: heat detection tube 130: extinguishing agent container
140: fire jacket 150: linear detector
160: sprinkler 170: cover

Claims (4)

By installing a plurality of cables 110 and a heat sensing tube 120 laid on the upper portion of the cable tray 100, the heat sensing tube 120 is connected to the extinguishing agent container 130 by a metal pipe, and the cable 110 ) And the heat sensing tube 120 is a fire protection shielding and fire extinguishing of a cable for a cable tray, characterized in that the connection parts of the fire jacket 140 having a unit length are overlapped and protected by overlapping each other and protecting them. Device.
The method according to claim 1,
Fire shielding and fire extinguishing device for a cable tray cable, characterized in that the heat sensing tube 120 is installed in a straight line or zigzag.
The method according to claim 1,
A fire shield and fire extinguishing device for a cable for a cable tray, characterized in that a sprinkler 160 is installed on the top of the cable tray 100 to spray fire water by being controlled by a control panel when a fire occurs.
The method according to claim 1,
Fire shielding and fire extinguishing device for a cable for a cable tray, characterized in that the fire jacket 140 surrounds the cable 110 and the heat sensing tube 120 as well as the cable tray 100.

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