KR102663670B1 - Hose for the prevention and extinction of fires - Google Patents

Abstract

The present invention provides a fire hose that has excellent durability and prevents bursting, and has excellent flame retardancy and heat resistance, so that it can be used for various purposes such as fire fighting and gas torches.

Description

Fire hose {HOSE FOR THE PREVENTION AND EXTINCTION OF FIRES}

The present invention relates to a fire hose used to transport high-pressure gas or fluid to a predetermined location. More specifically, it has excellent durability to prevent the hose from bursting, and provides excellent flame retardancy and heat resistance to be used for fire fighting, gas torches, etc. This relates to a fire hose that can be used for purposes.

In general, a hose is a pipe used to transport fluids such as water, gas, or flowable soil, and can be made of a material with excellent flexibility so that it can be freely bent.

Among these hoses, in the case of high-pressure hoses, there was a problem that the outer skin of the hose was peeled off due to vibration transmitted from the pump, and there was a problem that the lifespan of the hose was shortened due to elongation of the hose when used.

In order to solve this problem, some structures have been disclosed in which the outer peripheral surface of the hose is knitted with cloth tape or wire. However, the above structure is not only inefficient but also difficult to apply to high-pressure hoses rather than low-pressure hoses due to cost and structural problems, and even this was only applied to tubes rather than hoses.

Additionally, fields requiring flame retardancy include gas torches used for cutting and welding or hoses used for firefighting.

However, existing hoses lack flame retardancy, so when used for this purpose, some parts of the hose may be easily damaged by flame or heat. If the hose is damaged in this way, not only does it pose a risk of safety accidents, but also the fire hose is damaged. In this case, problems such as fire or water leakage due to damage may occur, making it impossible to use it properly.

In addition, high-pressure hoses for oxygen gas include rubber hoses and PVC hoses. The rubber hoses have excellent heat resistance and insulation, but are made very thick to have strong pressure resistance, so they are heavy. Not only is it inconvenient to do, but it has the disadvantage of being expensive and slow in production, greatly reducing competitiveness.

On the other hand, the PVC hose has the advantage of being cheaper and easier to manufacture than the rubber hose, but has the disadvantage of being weak against heat due to the nature of the PVC material. Accordingly, most PVC hoses are manufactured by mixing PVC with rubber ingredients and antioxidants to compensate for the weakness of heat resistance.

Domestic Patent Publication No. 10-1462336 (announced on December 4, 2014)

The main purpose of the present invention is to provide a fire hose that can have excellent flame retardancy, heat resistance, and safety while increasing durability to prevent the hose from bursting.

According to one aspect of the present invention, the endothelium in the form of a tube; It includes a first yarn wound continuously in a spiral shape at an angle of 105 to 110° on the outer peripheral surface of the inner skin, and a second yarn wound continuously overlapping with the first yarn in a direction crossing the first yarn. And, a fabric interwoven layer formed in a mesh shape on the outer peripheral surface of the inner skin; And a tube-shaped shell formed on the outer peripheral surface of the inner shell to cover the fabric layer. It includes a resin, and, based on 100 parts by weight of the resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, and 0.653 to 0.799 parts by weight of a liposaccharide. , 0.348 to 0.426 parts by weight of an antioxidant, 0.348 to 0.426 parts by weight of a UV stabilizer, and 0.061 to 0.075 parts by weight of a pigment, the shell comprising a resin, 44.995 to 54.993 parts by weight of a first plasticizer, based on 100 parts by weight of the resin, 13.307 to 16.265 parts by weight of secondary plasticizer, 5.397 to 6.597 parts by weight of stabilizer, 0.349 to 0.427 parts by weight of antioxidant, 0.349 to 0.427 parts by weight of UV stabilizer, 17.984 to 21.98 filler, 50.415 to 61.619 parts by weight of aluminum hydroxide, 7.189 to 8.787 parts by weight of flame retardant , 1.791 to 2.189 parts by weight of calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O) and 0.698 to 0.854 parts by weight of pigment.

According to another feature of the present invention, the first and second yarns of the fabric interwoven layer may be polyester reinforcing yarns.

According to another feature of the present invention, the fabric interwoven layer may be formed by weaving or braiding the first and second yarns in an over and under pattern.

According to the above embodiment of the present invention, it is possible to prevent the hose from bursting and improve its lifespan by reducing the vibration transmitted from the pump and having excellent durability, and has excellent flame retardancy and heat resistance, making it a fire hose necessary for fire scenes. It has the effect of being suitable for use in gas torches for cutting and welding work.

Figure 1 is a perspective view showing a hose according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of Figure 1.
Figure 3 is an actual photograph of a hose according to an embodiment of the present invention.
Figure 4 is a physical property table showing the pressure length change rate and pressure outer diameter change rate for the hose of one embodiment.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings. However, the embodiments of the present invention may be modified into various other forms, and the scope of the present invention is not limited to the embodiments described below.

Examples of the present invention are provided to more completely explain the present invention to those with average knowledge in the relevant technical field. Accordingly, the shapes and sizes of elements in the drawings may be exaggerated for clearer explanation, and elements indicated by the same symbol in the drawings are the same elements. In addition, the same symbols are used throughout the drawings for parts that perform similar functions and actions.

In addition, 'including' a certain element throughout the specification means that other elements may be further included rather than excluding other elements, unless specifically stated to the contrary.

Figure 1 is a perspective view showing a hose according to an embodiment of the present invention, Figure 2 is a cross-sectional view of Figure 1, and Figure 3 is a physical photograph of a hose according to an embodiment of the present invention.

Referring to Figures 1 to 3, the hose 100 according to an embodiment of the present invention includes an inner skin 10, a fabric interwoven layer 20, and an outer skin 30. This hose 100 can have a working pressure of 50Kgf/cm2 and a bursting pressure of 180Kgf/cm2.

The inner skin 10 is formed in a tube shape and may be made of a material containing rubber or resin to ensure flexibility.

Preferably, the inner skin 10 of one embodiment includes a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, and 0.653 to 0.799 parts by weight, based on 100 parts by weight of the resin. It may include lipids, 0.348 to 0.426 parts by weight of antioxidants, 0.348 to 0.426 parts by weight of UV stabilizer, and 0.061 to 0.075 parts by weight of pigments.

More preferably, the inner skin 10 of one embodiment contains 59.23 parts by weight of resin, 29.61 parts by weight of first plasticizer, 8.76 parts by weight of second plasticizer, 1.42 parts by weight of stabilizer, 0.43 part by weight of liposaccharide, 0.23 part by weight of antioxidant, UV It contains 0.23 parts by weight of stabilizer and 0.04 parts by weight of pigment. The remaining content is residual.

The resin is a homopolymer manufactured by suspension polymerization, and has an apparent specific gravity of 0.49 g/cm3, a degree of polymerization of 1250, a volatile content of 0.1%, an average particle diameter of 135㎛, and a particle size distribution (# 45) is 0%, the particle size distribution (#200) is 1.8%, the plasticizer absorption is 29%, the thermal stability is 72 minutes (min), and the resin whiteness is 96WI. In particular, the plasticizer absorption amount is high and the absorption rate is fast, allowing for improved soft mixability.

In addition, the resin has uniform and spherical PVC particles, and the size of the PVC particles is adjusted to suit soft processing using a plasticizer. In addition, the resin has vivid colors, excellent transparency, and has excellent color expression performance during color processing.

The plasticizer enters between the polymers and plays a role in preventing the polymers from strongly adhering to each other. At this time, an empty space is created, so it is easy to make a fairly soft plastic, thereby improving processability and providing flexibility to the hose. As a plasticizer, dioctyl adipate or trioctyl trimellitate plasticizer can be selectively used, and the second plasticizer is dioctyl adipate (Dioctyl adipate), which has excellent cold resistance, light resistance, and heat resistance. Adipate, C ₂₂ H ₄₂ O ₄ ) can be used.

The stabilizer may be a Ca-Zn-based powder stabilizer, the lipid saccharide may be a general-purpose rutile-type titanium dioxide pigment manufactured by a chlorine method, and the antioxidant may be tetrakis (methylene (3,5 -di-tertbutyl-4-hydroxyhydrocinamic acid)) methane, and the UV stabilizer is 2-hydroxy-4-(octyloxy)benzophenone). You can.

This inner skin 10 can be formed by applying heat of 160 to 180° C. to a material prepared in a mold prepared according to the standard, and then discharging the material in the form of a tube under the pressure of an extruder.

The inner skin 10 according to one embodiment may include the various types of additives described above and have excellent durability, flame retardancy, and heat resistance.

The fabric interwoven layer 20 is intended to provide durability that can withstand the internal pressure required for the inner skin 10, and prevents the inner skin 10 from stretching in the longitudinal direction to prevent the hose 100 from swelling or bursting in one direction. It can be prevented effectively.

In addition, the fabric interwoven layer 20 includes first yarns 21 and second yarns 22 wound in directions crossing each other on the outer peripheral surface of the inner skin 10, and a mesh network on the outer peripheral surface of the inner skin 10. is formed in the form

The first yarn 21 is wound continuously in a spiral shape on the outer peripheral surface of the inner skin 10 at an angle of 105 to 110°.

The second yarn 22 is continuously wound spirally on the outer peripheral surface of the inner skin 10 in a direction crossing the first yarn 21, overlapping with the first yarn 21.

Additionally, the fabric interwoven layer 20 may be formed by weaving or braiding the first and second yarns 21 and 22 in an over and under pattern. At this time, the first and second yarns 21 and 22 can be arranged in the same over and under pattern or, if necessary, in different over and under patterns.

In addition, the first and second yarns 21 and 22 may be, for example, thin filament yarns, preferably polyester reinforcing yarns, and the present invention is not limited to specific yarns.

Additionally, the first and second yarns 21 and 22 may be composed of a ply yarn made by plying two or more strands of basic yarn.

In addition, the first and second yarns 21 and 22 can be changed in various ways, such as being made of the same thickness or having different thicknesses if necessary, and the present invention is not limited thereto.

The outer shell 30 is formed to cover the fabric interwoven layer 20 on the outer peripheral surface of the inner shell 10 and is formed in a tube shape. Additionally, the outer shell 30 may be made of a material containing rubber or resin to ensure flexibility.

Preferably, the outer shell 30 of one embodiment includes a resin, 44.995 to 54.993 parts by weight of a first plasticizer, 13.307 to 16.265 parts by weight of a second plasticizer, 5.397 to 6.597 parts by weight of a stabilizer, and 0.349 to 0.427 parts by weight, based on 100 parts by weight of the resin. Antioxidant, 0.349 to 0.427 parts by weight UV stabilizer, 17.984 to 21.98 parts by weight, 50.415 to 61.619 parts by weight aluminum hydroxide, 7.189 to 8.787 parts by weight flame retardant, 1.791 to 2.189 parts by weight calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O)) and 0.698 to 0.854 parts by weight of pigment.

More preferably, the outer shell 30 of one embodiment contains 19.34 parts by weight of the first plasticizer, 5.72 parts by weight of the second plasticizer, 2.32 parts by weight of the stabilizer, 0.15 parts by weight of the antioxidant, 0.15 parts by weight of the UV stabilizer, and filler, based on 38.69 parts by weight of the resin. It may include 7.73 parts by weight, 21.67 parts by weight of the first flame retardant, 3.09 parts by weight of the second flame retardant, 0.77 parts by weight of calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O), and 0.3 parts by weight of pigment.

The resin can be a homopolymer manufactured by suspension polymerization, and the first plasticizer is dioctyl adipate or trioctyl trimellitate plasticizer. may be optionally used, and the second plasticizer may be dioctyl adipate (C ₂₂ H ₄₂ O ₄ ).

The stabilizer may be a material containing zinc stearic acid, magnesium aluminum hydroxycarbonate, and stearic acid. The filler may be CaCO ₃ .

The first flame retardant may be aluminum hydroxide, and when a fire occurs, water is generated through endothermic decomposition to achieve a flame retardant effect and prevent combustion through a cooling effect by the generated water.

The second flame retardant may be antimony trioxide (Sb ₂ O ₃ ), and when combusted due to a fire, it becomes a vapor phase and can realize a flame retardant effect by stopping the free radical reaction.

The calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O) is a flame retardant and suppressing component and may further include calcium magnesium silicates.

The antioxidant may be tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinnamic acid))methane.

The UV stabilizer may be 2-Hydroxy-4-(Octyloxy)Benzophenone, and selectively absorbs ultraviolet rays from solar rays and converts them into heat energy or decomposes from ultraviolet rays. It can play a role in preventing plastic decomposition by annihilating free radicals generated.

The fire-fighting hose of the present invention has improved flame retardancy and can be used for applications requiring flame retardancy. For example, it can be used as a gas torch for cutting and welding or a fire-fighting hose.

The outer shell 30 according to one embodiment may include various types of additives described above and have VO32 level flame retardancy and excellent heat resistance.

Figure 4 is a physical property table for a fire hose according to an embodiment. At this time, the endothelium contains 15 parts by weight of dioctyl adipate. Additionally, the inner diameter of the hose is 12.5 mm, the outer diameter is 19.2 mm, and the hood is 3 mm.

As can be seen in Figure 4, the hose of one embodiment has a pressure length change rate of 0.95% at 80 bar and 2.88% when the temperature is raised to 100°C at the same 80 bar, and a pressure outer diameter change rate of 9.38% at 80 bar and the same 80 bar. When the temperature was raised to 100℃, it was found to be 10.52%. This shows that the hose has excellent durability and that the pressure length change rate and pressure outer diameter change rate do not change significantly even when heated.

Therefore, the fire hose 100 constructed in this way has good cold resistance and heat resistance and is lightweight compared to a conventional PVC hose, and has excellent flame retardancy, heat resistance, and durability, so it can be appropriately used in various fields that require flame retardancy. For example, it can be used as a fire hose or as an oxygen gas hose because it can prevent the surface of the hose from melting due to iron sparks that fall on the surface of the hose.

The present invention is not limited by the above-described embodiments and attached drawings, but is intended to be limited by the appended claims. Accordingly, various forms of substitution, modification, and change may be made by those skilled in the art without departing from the technical spirit of the present invention as set forth in the claims, and this also falls within the scope of the present invention. something to do.

10: Endothelium
20: Fabric interwoven layer
30: outer shell
21, 22: first and second yarns
100: hose

Claims (7)

tubular endothelium;
It includes a first yarn wound continuously in a spiral shape at an angle of 105 to 110° on the outer peripheral surface of the inner skin, and a second yarn wound continuously overlapping with the first yarn in a direction crossing the first yarn. And, a fabric interwoven layer formed in a mesh shape on the outer peripheral surface of the inner skin; and
A tube-shaped shell formed on the outer circumferential surface of the inner shell to cover the fabric interwoven layer; Including,
The inner skin includes a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.653 to 0.799 parts by weight of a liposaccharide, 0.348 to 0.426 parts by weight, based on 100 parts by weight of the resin. Parts by weight of antioxidant, 0.348 to 0.426 parts by weight of UV stabilizer and 0.061 to 0.075 parts by weight of pigment,
The outer shell, the resin and 100 parts by weight of the resin, the first plasticizer of 44.995 to 54.993 parts by weight, the second plasticizer of 13.307 to 16.265 parts by weight, the stabilizer of 5.397 to 6.597 parts by weight, 0.349 to 0.427 weight portions, antioxidants of 0.349 to 0.349 to 0.427 Parts by weight of UV stabilizer, 17.984 to 21.98 parts by weight of filler, 50.415 to 61.619 parts by weight of aluminum hydroxide, 7.189 to 8.787 parts by weight of flame retardant, 1.791 to 2.189 parts by weight of calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O) and 0.698 to 0.854 parts by weight of pigment,
The outer shell is,
The resin uses a homopolymer manufactured by suspension polymerization,
As the first plasticizer, dioctyl adipate or trioctyl trimellitate plasticizer is selectively used,
The stabilizers include zinc stearic acid, magnesium aluminum hydroxycarbonate and stearic acid,
The filler uses CaCO ₃ ,
The first flame retardant uses aluminum hydroxide,
The second flame retardant uses antimony trioxide (Sb ₂ O ₃ ),
The calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O) is a flame retardant and suppressing component and further includes calcium magnesium silicates,
The antioxidant is tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinnamic acid))methane,
A fire hose, characterized in that the UV stabilizer is 2-Hydroxy-4-(Octyloxy)Benzophenone. According to paragraph 1,
The inner skin contains 29.61 parts by weight of the first plasticizer, 8.76 parts by weight of the second plasticizer, 1.42 parts by weight of the stabilizer, 0.43 parts by weight of lipids, 0.23 parts by weight of antioxidant, 0.23 parts by weight of UV stabilizer, and 0.04 parts by weight of pigment. A fire hose, characterized in that it includes a weight portion. According to paragraph 1,
The outer shell contains 19.34 parts by weight of the first plasticizer, 5.72 parts by weight of the second plasticizer, 2.32 parts by weight of the stabilizer, 0.15 parts by weight of the antioxidant, 0.15 parts by weight of the UV stabilizer, 7.73 parts by weight of the filler, and the first flame retardant, based on 38.69 parts by weight of the resin. A fire hose comprising 21.67 parts by weight, 3.09 parts by weight of a second flame retardant, 0.77 parts by weight of calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O), and 0.3 parts by weight of a pigment. tubular endothelium;
It includes a first yarn wound continuously in a spiral shape at an angle of 105 to 110° on the outer peripheral surface of the inner skin, and a second yarn wound continuously overlapping with the first yarn in a direction crossing the first yarn. And, a fabric interwoven layer formed in a mesh shape on the outer peripheral surface of the inner skin; and
A tube-shaped sheath formed on the outer peripheral surface of the inner sheath to cover the fabric interwoven layer; Including,
The inner skin includes a resin, 45 to 53 parts by weight of a first plasticizer, 13.315 to 16.273 parts by weight of a second plasticizer, 2.151 to 2.629 parts by weight of a stabilizer, 0.653 to 0.799 parts by weight of a liposaccharide, 0.348 to 0.426 parts by weight, based on 100 parts by weight of the resin. Parts by weight of antioxidant, 0.348 to 0.426 parts by weight of UV stabilizer and 0.061 to 0.075 parts by weight of pigment,
The outer shell, the resin and 100 parts by weight of the resin, the first plasticizer of 44.995 to 54.993 parts by weight, the second plasticizer of 13.307 to 16.265 parts by weight, the stabilizer of 5.397 to 6.597 parts by weight, 0.349 to 0.427 weight portions, antioxidants of 0.349 to 0.349 to 0.427 Parts by weight of UV stabilizer, 17.984 to 21.98 parts by weight of filler, 50.415 to 61.619 parts by weight of aluminum hydroxide, 7.189 to 8.787 parts by weight of flame retardant, 1.791 to 2.189 parts by weight of calcium borate (Ca ₂ B ₂ O ₅ ·H ₂ O) and 0.698 to 0.854 parts by weight of pigment,
The inner skin is,
The resin uses a homopolymer manufactured by suspension polymerization,
As the first plasticizer, dioctyl adipate or trioctyl trimellitate plasticizer is selectively used,
The second plasticizer uses Dioctyl Adipate (C ₂₂ H ₄₂ O ₄ ), which has excellent cold resistance, light resistance, and heat resistance,
The stabilizer is a Ca-Zn-based powder stabilizer,
The lipid saccharide uses a general-purpose rutile-type titanium dioxide pigment manufactured by the chlorine method,
The antioxidant is tetrakis(methylene(3,5-di-tertbutyl-4-hydroxyhydrocinnamic acid))methane,
A fire hose, characterized in that the UV stabilizer is 2-Hydroxy-4-(Octyloxy)Benzophenone. delete According to claim 1 or 4,
A fire hose, characterized in that the first and second yarns of the fabric interwoven layer are polyester reinforcing yarns. According to claim 1 or 4,
The woven fabric layer is a fire hose, characterized in that the first and second yarns are formed by weaving or braiding in an over and under pattern.