KR20150070908A - Fire stoppoing tube and fire stopping sytem comprising the tube - Google Patents

Abstract

The present invention provides a flame blocking tube formed of a flame retardant foam sheet including a thermally expandable filler and a binder resin and having elongated slots and being a hollow elongated slot, a flame blocking system including the flame blocking system, and a method of construction thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a flame blocking tube and a flame blocking system including the flame blocking tube.

The present invention relates to a flame blocking tube having flame retardancy and thermal expansion properties, and a flame blocking system including the flame blocking tube. The flame blocking system according to the present invention is applicable to an opening formed in a partition structure such as a wall, a cable transit, and the like.

If a fire occurs, many people and property damage will occur. As for the damage caused by the fire, not only the direct damage due to the fire but also the toxic smoke generated by the combustion of the combustible material and the loss of life due to the suffocation due to the rapid spread of the toxic smoke.

The movement of the flame and toxic smoke is mainly through the gaps between corridors, doors, openings between the bulkheads and other building interior structures. Among them, the opening between the partitions is a hole which is installed in the building to connect electric wires, cables or pipes from one space to another space with a wall therebetween. Especially in the case of a ship, a lot of pipes, And they are connected to each other through the openings in the partition wall.

Conventionally, the remaining space through which the cable, the pipe, and the like have passed through the opening is left as it is, or simply filled with a general filling foam, or filled with a silicone sealant or the like. As a result, when a fire occurs, there is a problem that the filler filled in the empty space easily fires or melts and the flame and toxic smoke spread easily through the opening, thereby increasing the damage.

Particularly, in the case of an opening through which electric wires and cables pass, the coating constituting the electric wire and the cable easily dissolves in the heat or disappears, so that the empty space in the opening widens and the diffusion of the flame and smoke is accelerated .

In order to solve this problem, a method of filling an opening in a partition wall with a flame-retardant filler has been applied. Among them, there is a method of filling an opening in the partition with a thermally expandable flame-retardant filler.

An example of such a fire stopping system is disclosed in International Publication WO 2006/097290, which discloses a fire resistant transit system. 1 shows a transit system 50 in which a thermally expandable rubber member 52 is disposed in a space other than the pipe 51 in an opening provided with at least one pipe 51 for connecting the first space to the second space. Respectively. The opening portion is divided into a portion occupied by the pipe 51 and a portion 55 without a pipe occupied by the pipe and a thermally expandable rubber member 52 is disposed in the pipe- At this time, the outer surface 53 of the pipe 51 is formed so as not to be surrounded by a single rubber member.

However, in the case of the fire stopping system, smoke is generated in the rubber member 52 during a fire. Further, in the process of filling the opening with the rubber member 52, since the rubber member 52 has a certain diameter, there is a possibility that a lot of empty space is formed in the opening when one kind of rubber member 52 is used. In order to reduce the void space, it is difficult to prepare various kinds of rubber members having different diameters separately. Further, since the pipe 51 is not completely wrapped by the rubber member 52, even if the rubber member 52 expands in the event of a fire, there is a limit in perfectly compressing the periphery of the pipe, There is a problem that the toxic gas is transmitted through the pipe.

Korean Patent Application No. 2010-57481 discloses a flame blocking tube having a structure in which a flame-retardant foam sheet including a thermally expandable filler and a binder resin is wound in a spiral tube shape. The cross section of the tube and the tube is shown in Figures 2 and 3, respectively. However, such a tube may not be fixed when it is filled in an opening of a bottom body or a wide space, so that it may be difficult to construct the tube.

International Publication No. WO2006 / 097290

The present invention solves the above-described problems of the conventional art, and allows a linear material such as a wire, a cable or a pipe to easily penetrate through an opening formed in a partition structure such as a wall, It is an object of the present invention to provide a flame blocking system which can fix internal structures better.

In addition, the present invention provides a means for filling openings formed by flame-retardant thermally expansible material so as to be easily applicable to the flame blocking system.

Further, according to the present invention, by applying the flame shielding tube to the flame shielding system, the openings provided on the barrier ribs are more thoroughly shielded by utilizing the expansion of the volume of the flame shielding tube due to the temperature rise at the time of fire, The purpose is to completely block smoke.

In order to achieve the above object, the present invention provides a flame shielding tube formed of a sheet of flame-retardant foam comprising a thermally expandable filler and a binder resin, having a slotted elongate slot, to provide.

According to an example of the invention, the tube may be in the form of an open-ring or open polygonal cross-section.

According to an embodiment of the present invention, the flame-retardant foam sheet may further include a flame-retardant filler, a heat conduction inhibitor, a fire-resistant filler, a plasticizer and the like, if necessary.

According to an embodiment of the present invention, the thermally expandable filler has flame retardancy and has a property of expanding when the temperature rises above a certain temperature. As examples of such thermally expandable fillers, those selected from the group consisting of expandable graphite, mica and vermiculite can be used.

According to an embodiment of the present invention, the thermally expandable filler may have a volume expansion rate of 10 times to 350 times.

According to an example of the present invention, the flame-retardant foam sheet can expand 300% to 2,000% volume within 5 minutes while the temperature rises from room temperature to 400 ° C.

 According to one embodiment of the present invention, the binder resin may be selected from the group consisting of polyethylene resin, ethylene vinyl acetate, polyurethane resin and rubber.

The present invention also provides a flame blocking system formed by filling the opening formed through the wall structure dividing two zones with the flame blocking tube.

Here, a wall is a structure that separates two zones, and is not a structure that is generally known as a wall, but a concept including a ceiling or floor for interlayer separation. Partitions and the like that do not completely separate one space correspond to the walls of the present invention.

In the flame blocking system according to the present invention, the open tubes may be filled in the openings in such a way that the open ring-shaped structures are interlocked with each other.

In the flame blocking system according to the present invention, a linear type material penetrates through the opening formed in the wall structure. According to an embodiment of the present invention, the linear material is surrounded by the flame shielding tube.

Since the flame shielding tube according to the present invention can be deformed by pressing or unfolding, it is easy to fill an empty space, and linear materials of various sizes can be easily fixed. It is also easy to re-hand work when additional linear materials penetrate after construction. Also, in the case of bottom penetration, water can flow through the cable.

According to an example of the present invention, the linear type material may be at least one of a communication cable, an electric wire and a pipe.

In the flame blocking system, the opening may be sealed on the wall surface or the bottom and the extended portion.

The present invention also provides a method of manufacturing a flame-retardant lamp, comprising: preparing the flame-shielding tube; Forming an opening through the wall structure separating the two zones; And filling the opening with the flame shielding tube.

According to an embodiment of the present invention, the method may further include the step of allowing a linear type material to pass through the opening.

Specifically, after the opening is formed, the linear type material may be penetrated through the opening. If a linear material is passed through the wall structure before forming the opening, the opening may be formed so that the linear material is included in the opening in the step of forming the opening.

According to an embodiment of the present invention, the linear material may be wrapped by the flame shielding tube. Here, the linear type material is at least one of a communication cable, an electric wire and a pipe.

According to an example of the present invention, the opening may further include sealing the wall surface or the bottom and the extended portion.

When the flame blocking tube and the flame blocking system using the flame blocking tube according to the present invention are applied, it is possible to effectively fix, support and connect cables, wires, and pipes passing through the opening between the partition walls of various buildings and ships.

In the present invention, by applying the flame shielding tube to the flame blocking system, the opening provided in the partition wall is more thoroughly shielded by utilizing the expansion of the volume of the flame shielding tube due to the temperature rise in the event of a fire, Can be completely blocked. As a result, when a fire occurs, the flame and smoke can be effectively shut off, thereby reducing the damage caused by the suffocation caused by the fire and delaying the flame propagation speed.

In addition, since the open loop type tube is used in the flame blocking system according to the present invention, the installation method is simple and the facility material cost is low, so that installation time and cost can be reduced.

Furthermore, in the flame blocking system according to the present invention, the tubes can be stacked more tightly when the blocks are stacked, and the tubes can be more securely fixed. As a result, the cable can be more securely fixed, the external impact can be less shaky, and the cable can not break easily.

1 is a cross-sectional view of an example of a conventional flame blocking system.
2 is a view showing an example of a conventional flame blocking tube.
3 is a cross-sectional view of the flame shielding tube according to FIG.
4 is a view showing a flame shielding tube according to an example of the present invention.
5 shows a cross section of the flame shielding tube according to an example of the present invention.
FIG. 6 is a view showing a state in which a linear substance is enclosed in a flame shielding tube according to an example of the present invention. FIG.
7 is an installation view of a flame blocking system according to an example of the present invention.
8 is a cross-sectional view of a flame shield system in accordance with an example of the present invention.
FIGS. 9A and 9B show a flame blocking test in which a flame is applied to a flame blocking system provided with the tube manufactured in Example 1. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a flame blocking tube according to the present invention, a flame blocking system using the flame blocking tube, and a construction method thereof will be described in detail with reference to the accompanying drawings.

However, these descriptions are provided only to illustrate the present invention, and the scope of the present invention is not limited by these exemplary explanations.

4 is a view showing an example of the flame shielding tube 100 according to the present invention.

The flame retardant flame shielding tube according to the present invention is formed of a flame retardant foam sheet as shown in FIG. 4, and has an open loop-shaped structure. The flame-retardant flame shielding tube serves as a filling means for the opening made of the flame-retardant thermally expansible material and is applied to the flame blocking system of the present invention.

5 shows a cross-section of a flame-shielding tube 100 according to an example of the present invention. As shown in FIG. 5, the tube 100 may have an open loop-type structure.

FIG. 6 shows a state in which the linear substance 200 is wrapped by the flame blocking tube 100.

The flame shielding tube 100 according to the present invention can be easily used when the opening 200 is formed through the opening after forming the opening in the wall to form the flame shielding system, It can be easily applied even in a state where it is disposed through the wall.

That is, when the linear structure 200 is already passed through the wall structure before forming the opening, the linear material 200 may be formed in the opening when the opening is formed. The linear material 200 may then be wrapped in a flame shielding tube 100. The remaining area of the opening can also be filled with the flame blocking tube 100 in the same manner.

FIG. 7 is an installation view of a flame shield system 10 according to an example of the present invention, and FIG. 8 is a cross-sectional view of a flame shield system 10 according to an example of the present invention. 7 and 8, the flame shielding system 10 includes the flame shielding tube 100 disposed in the opening 20 of the wall 30 to protect the linear substance 200 (e.g., electric wire, cable, pipe, etc.) Is disposed so as to pass through the opening 20 while being enclosed in the flame shielding tube 100. In the present invention, the tubes 100 are connected to each other so as to be meshed with each other so as to be filled in the openings 20. Each of these tubes has a hollow elongated shape and has elongated slots. Each tube may have an open-ring or open-polygonal cross-section (open triangle, open square, etc.). So that the tube 100 can be more closely packed in the opening 20. Also, since they are meshed with each other, they are not easily shaken by an external impact and are less likely to be broken or broken. According to one example of the present invention, the tube is flexible, allowing the user to adjust the size of the open portion, i.e., the slot. The thickness of the tube may be from 2 to 5 mm, preferably from 3 to 4 mm, and the width of the tube may be from 60 to 120 mm when the tube is flatly spread.

Hereinafter, the actual flame blocking mechanism according to the physical characteristics of the components used in the present invention will be described.

First, when a fire occurs and a flame is generated and the ambient temperature rapidly increases, the thermally expandable filler of the flame-retardant flame shielding tube 100 expands, and as a result, the flame-retardant flame shielding tube 100 expands At this time, the space of the opening 20 is filled with a certain pressure by the expanded volume, so that the flame and generated gas are prevented from moving between the partition walls due to the fire.

Particularly, when a high heat is generated due to the occurrence of a fire, even if a cover or the like constituting a cable, electric wire or other pipe is melted by high heat, the thermally expandable filler expands in volume, The displacement of the flame and the toxic smoke through the opening 20 is almost completely blocked because the volumetric portion of the missing coating or the like is filled with the compensation.

The flame retardant foam sheet forming the flame blocking tube according to the present invention comprises a thermally expansive filler and a binder resin. If necessary, it may further contain additional fillers such as flame retardant fillers, heat conduction inhibitors, refractory fillers, plasticizers, and the like.

First, the thermally expandable filler corresponds to a direct component for allowing the flame-retardant flame shielding tube according to the present invention to thermally expand. The thermally expandable filler has flame retardancy and has a property of expanding when the temperature rises above a certain temperature. Examples of such thermally expandable fillers include expandable graphite, mica, vermiculite, and the like.

The greater the volume expansion ratio of the thermally expandable filler, the more efficient it will be. However, when the thermal expansion filler is expanded, a carbonized layer is formed to maintain the flame retardant performance. If the volume expansion rate is too large, the carbonized layer is not fixed and the fire performance may be weakened. In addition, the thermo-expansive filler should be subjected to volume expansion under normal fire conditions. Therefore, a thermally expandable filler having a volume expansion of about 10 to 300 times at a temperature of 200 DEG C or higher can be advantageously applied to the present invention. More specifically, a thermally expandable filler that expands by about 50 to 300 times at a temperature of 200 to 1000 DEG C may be applied to the flame blocking system according to the present invention very efficiently in the present invention.

The content of the thermally expandable filler should be such that the resulting volume expansion rate of the flame blocking tube can achieve the desired purpose. According to an embodiment of the present invention, the content thereof may be 10 to 40% by weight based on the total weight of the flame blocking tube.

On the other hand, the binder resin serves as a base material of the flame retardant flame retardant tube according to the present invention, and serves as a binder for bonding the thermally expandable filler. The binder resin may be a component capable of binding the thermo-expansive filler and a flame retardant tube according to the present invention and a flame retardant foam sheet for forming the flame blocking tube, .

It is preferable that the binder resin does not have high pyrophoricity at high temperature and produces less smoke and soot in the case of combustion or pyrolysis, and it is preferable that it does not hinder thermal expansion of the thermo-expansive filler. Examples of such a binder resin include a polyethylene resin, ethylene vinyl acetate, a polyacrylic resin, a polyurethane resin, and a rubber, which may be used alone or in combination.

Meanwhile, the binder resin may be blended in different amounts depending on the characteristics of use, and in the present invention, it is contained in an amount of about 40% by weight to 65% by weight.

In order to manufacture the flame shielding tube, flame retardants, heat-resistant fillers, crosslinking agents, defoaming agents and the like may be additionally used as well as fillers such as flame retardant fillers, heat conduction inhibitors, fire retardant fillers and plasticizers.

The production of the flame-shielding tube according to the present invention will be described with reference to the following examples.

≪ Examples 1 to 4 >

A tube was prepared according to the composition shown in Table 1 below.

division Example 1
(wt%) Example 2
(wt%) Example 3
(wt%) Example 4
(wt%) Binder resin Poly Olefin 50 50 25 EVA - 25 Polyurethane - 48 - Thermally expandable filler Thermally expandable graphite 10 15 20 10 Flame retardant filler Ammonium phosphate 12 15 15 15 Heat conduction inhibitor Aluminum trihydrate 11 10 10 10 Heat-resistant filler Zinc Borate 5 5 5 5 Plasticizer DCP 0 One One One Refractory filler Melamine phosphate 12 4 One 9

Here, PE is a polyethylene resin and EVA is an ethylene vinyl acetate.

The container was filled with a binder resin, a thermally expandable filler, a flame-retardant filler, a heat-conduction inhibitor, a heat-resistant filler, a refractory filler and, if necessary, a plasticizer in a composition as shown in Table 1, A flame-retardant foam sheet is prepared. The tube was cut in the longitudinal direction and rolled at a processing temperature of about 60 to 70 DEG C to prepare a tube having the shape shown in FIG.

≪ Test Example 1 > Volume expansion rate test

Specimens (diameter: 44 mm, thickness: 4 mm) were prepared in order to measure the free volume expansion rate of the flame-proofing tubes prepared in Examples 1 to 4, put in a furnace, To 400 < [deg.] ≫ C, the expansion volume ratio was calculated.

As a result, it was confirmed that the volume expansion rates of the flame-shielding tubes prepared in Examples 1 to 4 were 1000%, 1200%, 1700% and 1000%, respectively.

It can be seen that the volume expanding capacity of the flame shielding tube according to the present invention can achieve a very large volume expansion in a short time as about 1000% for 3 minutes while the temperature rises from room temperature to 400 ° C.

≪ Examples 5 to 8 >

Flame shut-off systems were fabricated using the flame blocking tubes prepared in Examples 1 to 4 above.

As shown in FIGS. 7 and 8, an opening 20 through the wall 30 is formed in a wall 30 on which a flame blocking system 10 according to the present invention is to be installed. Next, the flame shielding tubes prepared in Examples 1 to 4 were cut to a length corresponding to the thickness of the wall.

For convenience of operation, a frame 21 is provided in the opening.

Then, through the opening of the wall, two wires of a linear type material 200, three strands of a communication cable, and two pipes are wrapped with a flame shielding tube.

Then, the opening of the wall can be closed by sealing the wall surface and the extended portion of the opening. Such a sealing can be easily performed by using a silicone sealant surface treatment agent. Sealing is aimed at fixing and waterproofing the system.

≪ Test Example 2 >

The actual flame shielding test was carried out using the tube prepared in Example 1 above. For the flame barrier test, the deck system of IMO 754.18 was applied. The system used for testing has a size of 30 X 65 cm.

FIG. 9A is a photograph of a flame blocking system in which a tube according to an example of the present invention is installed. FIG. 9A shows a state before a flame blocking test is performed by applying a flame. In Fig. 9A, the upper opening is filled with the tube manufactured in Example 2 as the plastic pipe penetration portion, and the lower opening is filled with the tube manufactured in Example 1 as the cable penetration portion.

9B is a photograph of the heating surface after the flame blocking test is performed by applying a flame to the flame blocking system. No penetrating items were visible at the top two openings because the plastic pipe completely melted away. Since the expanding agent expands and the plastic pipe melts to fill the void space, the refractory performance of the system can be maintained. In the lower opening, the part where the electric wire is melted is filled with filler, etc., so that the fire resistance performance of the system is maintained.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

DESCRIPTION OF THE REFERENCE SYMBOLS
10: flame blocking system 20: opening
21: frame 30: wall
40, 100: tube 50: transit system
51: pipe 52: rubber member
53: Outer surface 55: Pipe-free part
200: linear material 300: sealing

Claims (17)

A flame blocking tube formed from a flame retardant foam sheet comprising a thermally expandable filler and a binder resin, having a elongate slot and being in the form of a hollow, hollow flame. The flame-shielding tube according to claim 1, wherein the flame-blocking tube is in the form of an opened-ring or an open polygon. The flame shielding tube according to claim 1, wherein the flame-retardant foam sheet further comprises at least one selected from the group consisting of a flame-retardant filler, a heat conduction inhibitor, a heat-resistant filler, and a plasticizer. The flame shielding tube according to claim 1, wherein the thermally expandable filler is selected from the group consisting of expandable graphite, mica, and vermiculite. The flame shielding tube according to claim 1, wherein the thermally expandable filler has a volume expansion rate of 10 to 350 times. The flame blocking tube according to claim 1, wherein the flame-retardant tube is capable of 300% to 2000% volume expansion within a time of 5 minutes while the temperature rises from room temperature to 400 ° C. The flame shielding tube according to claim 1, wherein the binder resin is at least one resin selected from the group consisting of polyethylene resin, ethylene vinyl acetate, polyacrylic resin, polyurethane resin and rubber. A flame blocking system formed by filling a flame-blocking tube according to any one of claims 1 to 7 in an opening formed through a wall structure that divides two zones. The flame blocking system of claim 8, wherein each of the tubes is connected to each other in an interlocking manner to fill the opening. The flame blocking system of claim 8, wherein a linear type material passes through the opening, and the linear type material is surrounded by the flame shielding tube. The flame blocking system of claim 10, wherein the linear type material is at least one of a communication cable, an electric wire, and a pipe. The flame blocking system of claim 8, wherein the opening is sealed with a wall surface and an extended portion. 8. A method of manufacturing a flame-shielding tube, comprising: preparing a flame-shielding tube according to any one of claims 1 to 7;
Forming an opening through the wall structure separating the two zones; And
Filling the opening with the flame shielding tube;
The method comprising the steps of: 14. The method of claim 13,
A linear type material is passed through the opening,
Wherein the linear material is wrapped by the flame shielding tube. 15. The method of claim 14,
Wherein a linear material is passed through the wall structure before the opening is formed and an opening is formed so that the linear material is included in the opening when the opening is formed. 15. The method of claim 14, wherein the linear type material is at least one of a communication cable, an electric wire, and a pipe. 14. The method of claim 13, wherein the opening further comprises sealing a wall or a portion extending from the bottom.

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