KR100738470B1 - Cable tray a function of fire spread prevention - Google Patents

Abstract

A cable tray with a fire spread preventing function is provided to promptly extinguish a fire by smoothly supplying fire preventing water to the cable tray and installing a fire prevention panel. A cable tray(100) with a fire spread preventing function includes a plurality of fire preventing panels(310), and a fixing member. The plurality of fire preventing panels(310) prevent a fire from being spread along cables(200). The fixing member fixes the fire preventing panels(310) on the cable tray(100). The fire preventing panels(310) are arranged on right/left sides of the cable(200) at a predetermined interval.

Description

Cable tray with function of fire spread prevention

1 is a perspective view showing a cable tray according to the prior art.

2 is a perspective view showing a cable tray according to the present invention.

3 is an enlarged detailed view of the fire protection panel unit shown in FIG. 2;

4 is an exploded perspective view of FIG. 3.

5 is a perspective view showing a detailed structure of the fire protection panel of FIG.

Figure 6 is a longitudinal sectional view showing the action by the fire protection panel according to the present invention.

Figure 7 is a cross-sectional view showing the action by the fire protection panel according to the invention.

8 is a perspective view showing a form in which the cable tray according to the present invention is installed in two stages.

The present invention relates to a cable tray for communication and power, and more particularly, to a cable tray having a fire diffusion prevention function for preventing a fire occurring in the cable tray from spreading along a cable installed in the cable tray and thermal foaming therefor. It relates to a fire extinguishing fire bulkhead.

In general, cable trays for laying telecommunication and power cables are suspended in underground parking lots or on the ceiling of common areas. Cable trays include ladder type cable trays and punched bottom cable trays. The punching cable tray is formed by bending a steel sheet punched with a plurality of punching holes into a bottom plate and vertical plates on both sides thereof. And a cable for communication and power (hereinafter abbreviated as 'cable') is laid on the bottom plate of the cable tray.

By the way, the cable installed in the conventional punching cable tray (hereinafter referred to as "cable tray") had a problem that the fire spreads along the outer shell of the cable when a fire occurs. In addition, according to the National Emergency Management Agency data, more than 30% of the fires by electricity among all the fires in Korea, and even if the fire is caused by other causes, the fire is spread through the cable in many cases. In particular, in recent years, the cable trays are often installed in multiple stages, and when a fire occurs, the fire is difficult to extinguish the fire because water supplied from the upper side is not drained to the lower cable tray.

In order to solve this problem, a method of delaying the flame transition time by applying a fire-resistant paint to the cable, a method of installing a gas fire extinguishing system in the cable tray, a method of blocking the transition of fire by wrapping the cable tray with a thermo-foamed flame retardant cloth. In addition, a method of making a cable sheath a flame retardant material has been developed. However, the method of applying a fire-resistant paint on the surface of the cable or wrapping the cable tray with a flame retardant has a problem of poor workability. In addition, the method of installing a gas fire extinguishing system requires a high initial installation cost and requires management after installation, and has a problem of causing injury to humans when gas is released due to malfunction. In addition, the flame-retardant cable has the effect of delaying the transition of the fire, but it is difficult to completely block the spread of the fire and there was a problem that the price is not widely used.

1 is a perspective view showing an example of a cable tray according to the prior art. As shown, the cable tray 1 according to the prior art has a vertical plate 14 is formed on both sides of the bottom plate 12 having a predetermined width, and the bottom plate 12 and the vertical plate 14 has a plurality of Two punching holes 11 are drilled. The upper end of the vertical plate 14 is formed with a kernel 16 having a "∩" shape. The cable tray 1 is installed on the ceiling of an underground parking lot or a public ward.

The size of the punching hole 11 perforated in the bottom plate 12 of the cable tray 1 according to the prior art as described above is not only large enough to drain fireproof water, but also the bottom face 12 of the cable tray 1. This is because the cable 2 is closely installed to close the punching hole 11. In addition, the conventional cable tray (1) has a problem that the size of the fire increases and the damage to life because the fire spreads along the cable in a difficult state to extinguish the fire early.

To solve the above problem, US Pat. No. 4,069,075 describes an intumescent coating material for structural members. This relates to a wire mesh attached to a structural member as an intumescent coating formed with self-adhesive charcoal applied to the structural member.

And the technique disclosed in U.S. Patent No. 4,273,879 is applied to an expandable combustion delayed composite sheet material having a galvanized steel base layer laminated on one surface, a wire mesh laminated on the other surface of the composite sheet material, and applied throughout the wire mesh. It consists of an aluminum thin film layer. The expandable material remains dense and unexpanded insulated until exposed to heat or flame, and when exposed to heat the volume expands by eight times to provide sheet-shaped insulated charcoal. In this case, the expandable synthetic sheet may be formed of additives such as particulate expandable components, organic binders such as elastomers, organic charcoal forming components, mud, silica, artificial organic staple fibers or inorganic fibers such as glass fibers or ceramic fibers. And a flexible thermal expansion combustion delayed composite sheet.

In addition, the Republic of Korea Utility Model Registration No. 20-396696 is a flame retardant material using a flame retardant cloth coated with a mixture of heat-expandable flame-retardant polymer compound and a fire extinguishing agent in a cloth, net, mat made of fiber or metal according to the application A technique for preventing the spread of fire by wrapping the is disclosed.

In addition, Korean Patent No. 10-341273 discloses a flame retardant fabric in which a fiber is treated with a flame retardant composition comprising a water-soluble resin, a silicone resin, graphite, a foaming agent, a foam stabilizer, a surfactant, a medium agent, and a crosslinking agent. However, these conventional technologies are to wrap the cable or cable tray with a flame retardant panel or flame retardant fabric, so there is a problem that the workability is low and labor costs are high.

Accordingly, the present invention has been made to solve the above problems according to the prior art, an object of the present invention is a plurality of fire-retardant refractory refractory material coated with a fire-extinguishing material that can prevent the spread of fire on the cable tray and the fire prevention Installing a fireproof panel unit made of a fixing member for fixing the panel to the cable tray, wherein the fireproof panel is arranged on the left and right of the cable at regular intervals so that the fire generated from the cable tray for communication and power is installed thereon. The present invention provides a cable tray having a fire spreading protection function to prevent spreading along an existing cable.

As a specific means for achieving the above object of the present invention, a cable tray having a fire spreading prevention function according to the present invention is a cable tray in which a plurality of cables are seated, the cable tray is fired through the cable at the time of fire A plurality of fire protection panels capable of preventing diffusion and fixing members for fixing the fire protection panels to the cable trays are installed, and the fire protection panels are arranged on the left and right sides of the cable at regular intervals.

Here, the fixing member of the present invention may be configured to include a support plate formed with a fitting hole in which the fire protection panel is fitted, and a cover plate fastened to the support plate and coupled to the cable tray, wherein both ends of the cover plate are Hook portions may be formed on the upper left and right sides of the cable tray to be coupled to each other.

In addition, the fixing member of the present invention may further comprise a fixing clip for fixing the fire protection panel to the support plate, wherein the fire protection panel is fitted into the fitting hole in the state in which the fixing clip is coupled to the fixing clip An end portion may be formed to be caught and supported around the fitting hole.

On the other hand, the fire protection panel may be composed of a fire-resistant fiber layer, a net surrounding the fire-resistant fiber layer, and a heat-foaming fire-resistant refractory material applied to the outer surface of the net.

In this case, the heat-foaming refractory refractory material, it may be configured to be composed of a complex organic material surface-modified zinc phosphate or zinc chloride compound using a phosphoric acid, phosphate, metal fatty acid salt, higher fatty acid ester in the dispersion solution of the metal hydroxide.

On the other hand, another type of cable tray having a fire spreading prevention function for achieving the above object of the present invention is a cable tray in which a plurality of cables are seated, the cable tray to the spread of fire through the cable during the fire A plurality of fire prevention panels and a fixing member for fixing the fire protection panel to the cable tray is provided, wherein the fire protection panel is disposed on the left and right sides of the cable at regular intervals, and the fixing member is on the fire protection panel. The support plate is formed with a fitting hole and the cover plate is fastened to the support plate is configured to include a coupling coupled to the cable tray, wherein both ends of the cover plate hook portion for engaging on the upper left and right sides of the cable tray And a plurality of drainage holes are formed in the bottom plate of the cable tray. It shall be.

At this time, the drain hole is perforated in a zigzag manner and the edge is bent to the bottom of the bottom plate can be configured to smoothly drain the fire.

Hereinafter, a preferred embodiment of a cable tray having a fire diffusion prevention function according to the present invention will be described in detail with reference to the accompanying drawings.

First, Figure 2 is a perspective view showing a cable tray according to an embodiment of the present invention. 3 is an enlarged detailed view of the fire protection panel unit shown in FIG. 2, and FIG. 4 is an exploded perspective view of FIG. 3. In addition, Figure 5 is a detailed view showing a detailed structure of the fire protection panel shown in Figure 2, Figure 6 and Figure 7 is a longitudinal sectional view and a cross-sectional view showing the fire spreading prevention action by the fire protection panel when a fire occurs in the cable tray. 8 is a perspective view showing a form in which the cable tray according to the present invention is installed in two stages.

In the embodiment to be described below, in the cable tray 100 shown in FIG. 2, the lengthwise direction of the cable tray 100 is referred to as 'front and rear direction', and two directions perpendicular to the lengthwise direction are respectively referred to as 'left and right directions'. And will be described as 'height direction'.

2 to 7, the cable tray 100 having a fire spreading prevention function according to the present invention (hereinafter referred to as 'the cable tray of the present invention') is a steel sheet in which a plurality of punching holes 112 are drilled. By bending to form a bottom plate 110 of a predetermined width and a vertical plate 120 of a certain height on both sides, to form a channel for laying a plurality of cables 200, a plurality of the bottom plate 110 The drain hole 114 is made by zigzag drilling.

The drainage hole 114 is formed to be larger than the conventional punching hole, and the fireproof water supplied from the upper spring cooler through the drainage hole 114 is smoothly discharged and the strength of the cable tray 100 is lowered. It is drilled zigzag to prevent. In addition, the edge of the drain hole 114 is bent obliquely to the bottom of the bottom surface 110 of the cable tray 100 so that the fire water can be smoothly drained. In addition, a kernel 130 having a “∩” shape is formed at an upper end of the vertical plate 120.

The cable tray 100 is provided with a fire protection panel unit 300 that can prevent the spread of fire through the cable 200 in case of fire. The fire protection panel unit 300 is fixed to fix the fire protection panel 310 and the fire protection panel 310 to the cable tray 100 is coated with a heat-foaming fire-resistant (耐火) fireproof material. It is composed of members.

Fire protection panel unit 300 as described above is provided in plurality and are installed with a predetermined interval (preferably interval of 2 ~ 3m) to each other along the front and rear direction (length direction) of the cable tray 100.

On the other hand, the fire protection panel 310 is a heat-foaming refractory refractory material is applied to the surface of the rectangular plate shape, a plurality of in the left and right directions of the cable tray 100 is arranged to be spaced apart from each other at regular intervals.

In this case, the fire protection panel 310 is located on the left and right sides of the cable 200 when viewed with respect to the cable 200, and the cable 200 is fireproof when viewed with respect to the fire protection panel 310. It is located between the panels 310.

In addition, the cable 200 may be installed in a multi-stage structure in which a plurality of cables are stacked in the height direction between the fire protection panels 310.

Meanwhile, the fixing member for fixing the fire protection panel 310 to the cable tray 100 includes a support plate 320 having a fitting hole 324 in which the fire protection panel 310 is fitted, and the support plate 320 are fastened to the support plate 320. The cover plate 330 is coupled to the cable tray 100.

The support plate 320 is formed in a thin rectangular plate shape, and the long side thereof is disposed to face the left and right directions of the cable tray 100 to support the plurality of fire protection panels 310.

The fitting hole 324 is a rectangular hole in which the fire protection panel 310 can be inserted and inserted, and forms a predetermined interval along the longitudinal direction of the support plate 320.

In addition, both ends of the front and rear sides of the support plate 320 are bent downward to form the bent portion 322. The support plate 320 having a thin plate shape is sufficiently formed by the formation of the bent portion 322. Keep your strength.

Meanwhile, a fixing clip 360 for fixing the fire protection panel 310 to the support plate 320 is coupled to the center of the upper end of the fire protection panel 310.

The fixed clip 360 is a clip of a known type that is generally used to hold and pinch the document, in this embodiment is a clip clip of a metal plate clip of the strong 'c' shape I adopt).

The blade clip is elastically coupled to the top of the fire protection panel 310 by using a blade clip dispenser (extrusion device), the specific shape of the blade clip is also shown in the Utility Model Registration No. 20-0282053 Therefore, a separate description of the structure and function will be omitted.

The fixing clip 360 is formed to be inclined to the two surfaces facing each other not parallel to each other, the fitting hole 324 of the support plate 320 in the state in which the fixing clip 360 is coupled to the fire protection panel 310 When inserted into the opening portion of the fixing clip 360 passes through the fitting hole 324, while the upper end located on the opposite side of the inlet portion is not allowed to pass through the fitting hole 324.

Therefore, the fire protection panel 310 to which the fixed clip 360 is coupled is inserted into the fitting hole 324 at the upper portion of the support plate 320 and tapered of the fixed clip 360 as shown in the cross-sectional view of FIG. 6. The upper end is caught around the fitting hole 324 and the fire protection panel 310 is maintained in a supported state without falling down.

Meanwhile, the cover plate 330 having a rectangular plate shape larger than the support plate 320 is covered and coupled to the support plate 320, and the bent portion bent downward at both ends of the cover plate 330 in the front and rear directions. 334 and 332 are formed.

At this time, the bent portions 332 formed at both ends of the left and right sides of the cover plate 330 are not be intersected with the bent portions 334 formed at the both ends of the front and rear sides, and are bent at a predetermined distance to be spaced apart from each other. (100) The hook portion 336 that can be hooked to the upper kernel 130 is formed.

Accordingly, the fire protection panel unit 300 having the fire protection panel 310, the support plate 320, and the cover plate 330 assembled thereon is connected to the cable through hooks 336 formed at both ends of the cover plate 330. The kernel 130 of the tray 100 can be fitted and easily mounted.

The cover plate 330 is bolted to the support plate 320 through the bolt 350, the support plate 320 in the fastened state is covered by the cover plate 330 is not exposed to the outside.

In addition, in the state in which the cover plate 330 is fastened and assembled on the support plate 320, as shown in FIG. 6, the bottom surface of the cover plate 330 is pressed against the top of the fixing clip 360 so that the fire panel ( 310 does not flow in the lateral direction and keeps a firm fixed state.

On the other hand, the fire protection panel 310 according to the present invention, as shown in the detailed view of Figure 5, the refractory fiber layer 312 made of a refractory fiber material located in the center, and the net 314 surrounding the refractory fiber layer 312 and The thermal foaming refractory refractory material 316 is applied to the outer surface of the net 314.

The thermal foaming refractory refractory material 316 is applied in the form of a paint or powder, and is foamed by heat and flame and carbonized to form a thermal insulation wall. The thermal insulation wall formed by the thermal foam fire-resistant refractory paint or refractory powder serves to prevent the flame from being transferred to the cable and to block the oxygen supplied to the cable to extinguish the fire. The thermally extinguishing refractory powder is prepared by blending a fluorine-based or phosphorus-based thermofoamable polymer compound with a surfactant used as a powder extinguishing agent and a dispersant.

Meanwhile, Korean Patent No. 10-139292 discloses a 'latex bonded fire resistant composition'. This latex bonded fire retardant composition is a heat-expandable (heat-expandable) fire-retardant composition containing expandable graphite, carboxyl-containing chloroprene latex, and a substance that forms a Paris crystalline carbon structure upon combustion. The latex-bonded fire-retardant composition blocks the propagation of the flame because it forms a barrier layer by thermal foaming and consequent closure of the opening in the event of fire. In addition, Korean Patent Laid-Open Publication No. 10-1986-3106 discloses a mixture containing sodium silicate to form a self-extinguishing charcoal barrier generated upon exposure to fire or heat. Therefore, the thermal foaming fire-resistant refractory paint and the refractory powder to be applied to the present invention may be applied to any one that can form a carbon structure while being foamed by heat in a fire.

In addition, the thermal foam fire-resistant refractory paint is to mix the pigment and colorant in the thermal foam fire-resistant refractory powder so that it can be applied where the flame, such as wood or iron. And it is possible to make the flame retardant cloth by applying or impregnating the thermal foam fire-resistant refractory powder to the net-type fabric. At this time, the fabric is preferably a non-flammable fabric of less than 2 ~ 5mm mesh, it is also possible to use a general fiber material to induce pollution or ease of operation. Examples of such non-combustible fabrics include fiberglass, asbestos, metals, and the like.

At this time, the heat-foaming refractory refractory material 316 may be composed of a composite organic material surface-modified zinc sulfate or zinc chloride compound using a phosphoric acid, phosphate, metal fatty acid salt, higher fatty acid ester in a metal hydroxide dispersion solution.

The thermal foamable fire protection panel 310 shields the periphery of the cable 200 between the fire protection panel 310 in case of fire, not only to prevent the flame from being transferred along the longitudinal direction of the cable 200, The heat-foaming refractory refractory paint or refractory powder coated on the surface or stored therein is converted into non-combustible carbide as the volume increases from 50 times to 300 times by heat, and thus is thick around the fire protection panel 310 and the cable 200. In addition to forming an insulating barrier layer, the oxygen barrier acts as a barrier to prevent fire spreading along the cable.

The fire protection panel unit 300 of the present invention, which is provided with such a thermal foamable fire protection panel 310, is preferably installed in the cable tray 100 at intervals of 2 to 3 m. In addition, it is preferable to form the width in the front-rear direction (lengthwise direction) of the thermal foamable fire protection panel 310 to be about 15 to 30 cm.

In the cable tray of the present invention having the above-described configuration, when a fire occurs in the cable tray 100 in which the fire protection panel 310 is installed, heat applied to the outer surface of the fire protection panel 310 by heat or flame generated during fire. The foamed refractory refractory material 316 is foamed so that the refractory foam material fills the space between the fire protection panels 310 in which the cable 200 is installed as shown in FIGS. 6 and 7 to form an insulation barrier layer around the cable 200. do. In addition, the foamed material foamed around the cable 200 is changed to a carbonized material by a flame to prevent the cable from catching fire and to block the oxygen supplied to the cable 200 to extinguish the fire.

Meanwhile, the cable tray 100 having a fire spreading prevention function according to the present invention may be configured in a two-stage manner in which the upper and lower cable trays 100 are installed side by side at regular intervals as shown in FIG. 8. In this case, a plurality of drainage holes 114 are drilled in the bottom surface 110 of the upper cable tray 100, and the cable 200 disposed therebetween is provided between the fire protection panels 310 of the fire protection panel unit 300. They are arranged at spaced intervals and arranged at the interval.

Therefore, when a fire occurs in the multi-stage cable tray system, the fireproof water sprayed from the sprinkler installed thereon is supplied above the upper cable tray 100. The fire protection water supplied to the upper cable tray 100 is directly supplied to the lower cable tray 100 through the drain hole 114. Accordingly, the fire generated in the lower cable tray 100 can be easily extinguished even by the operation of the string cooler.

The protection scope of the present invention described above will be determined according to the technical idea, and is not limited by the embodiments described according to the accompanying drawings. In addition, those skilled in the art can make a variety of embodiments or modifications from the disclosure herein, but it is obvious that included in the scope of the present invention as long as it does not depart from the scope of the technical spirit of the present invention.

As described above, the present invention is provided with a fireproof panel unit composed of a plurality of fireproof panels and a fixing member for fixing the fireproof panel to the cable tray in the cable tray, the fireproof panel on the left and right of the cable at a predetermined interval By arranging to be arranged, the flame is generated from the cable tray because the thermal foaming refractory refractory material applied to the outer surface of the fire protection panel is foamed by heat or flame in the event of a fire, filling the space between the fire protection panels to form an insulation barrier layer around the cable. It can be transitioned along to prevent the fire from spreading.

In addition, a predetermined gap is formed between the cables installed in the cable tray through the fire protection panel, and a plurality of drainage holes are zigzag-punched in the bottom plate of the cable tray to supply the fireproof water from the upper cable It is fed smoothly to the tray so that the fire can be extinguished quickly.

Therefore, the cable tray having a fire spreading prevention function according to the present invention prevents the fire from spreading on the cable, and rapidly extinguish the fire generated in the cable to protect the cable from the flame and reduce the toxic gas, thereby reducing the human injury. It can be effective.

In addition, the fixing member of the fire protection panel unit is composed of a support plate having a fitting hole into which the fire protection panel is fitted, and a cover plate fastened to the support plate and coupled to the cable tray. By forming the hook portion for coupling, it is very easy to install the fire protection panel unit in the cable tray, and thus there is an effect that can significantly reduce labor costs and construction period.

In addition, since the fire protection panel is provided in the form of a plate made of a fire resistant fiber layer, a net surrounding the fire resistant fiber layer, and a heat-foaming refractory refractory material applied to the outer surface of the net, the production and installation of the fire protection panel is easy.

In addition, according to the configuration in which the mounting holes are arranged at regular intervals in the support plate, and the fire protection panels are fitted into the fitting holes, the cables are installed at a plurality of fire protection panels in the state where the fire protection panel unit is installed in the cable tray. There is an excellent effect that can be arranged to be forced to meet the specifications.

Claims (7)

In the cable tray in which a plurality of cables are seated, The cable tray is provided with a plurality of fire protection panels that can prevent the spread of fire through the cable during the fire, and a fixing member for fixing the fire protection panel to the cable tray, The fire protection panel is a cable tray having a fire diffusion prevention function, characterized in that arranged at the left and right of the cable at a predetermined interval. The method of claim 1, wherein the fixing member comprises a support plate formed with a fitting hole for the fire protection panel is fitted, and a cover plate fastened to the support plate is coupled to the cable tray, Cable trays having a fire spreading prevention function, characterized in that hooks are formed at both ends of the cover plate to hang on the upper left and right sides of the cable tray. According to claim 2, further comprising a fixing clip for fixing the fire protection panel to the support plate, The fire protection panel is a cable tray having a fire diffusion prevention function, characterized in that the fixing clip is inserted into the fitting hole in the state coupled to the end of the fixing clip is formed to be supported around the fitting hole. According to claim 2 or 3, wherein the fire protection panel has a fire diffusion prevention function, characterized in that consisting of a fire-resistant fiber layer, a network surrounding the fire-resistant fiber layer, and a heat-foaming refractory refractory material applied to the outer surface of the network. cable tray. The method of claim 4, wherein the heat-foaming refractory material is composed of a complex organic material surface-modified zinc sulfate or zinc chloride compound using a phosphoric acid, phosphate, metal fatty acid salt, higher fatty acid ester in a metal hydroxide dispersion solution Cable tray with fire spreading prevention function. In the cable tray in which a plurality of cables are seated, The cable tray is provided with a plurality of fire protection panels that can prevent the spread of fire through the cable during the fire, and a fixing member for fixing the fire protection panel to the cable tray, The fire protection panel is disposed on the left and right of the cable at regular intervals, The fixing member includes a support plate having a fitting hole in which the fire protection panel is fitted, and a cover plate fastened to the support plate and coupled to the cable tray. Hooks are formed at both ends of the cover plate to be coupled to the left and right upper ends of the cable tray, And a plurality of drainage holes formed in the bottom plate of the cable tray. The cable tray having a fire diffusion prevention function according to claim 6, wherein the drain hole is perforated in a zigzag manner and the edge thereof is bent to the bottom of the bottom plate so that the fire water is smoothly drained.

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