CN211195161U - Fireproof heat insulation blanket, cable joint and cable laying structure - Google Patents
Fireproof heat insulation blanket, cable joint and cable laying structure Download PDFInfo
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- CN211195161U CN211195161U CN201921283342.3U CN201921283342U CN211195161U CN 211195161 U CN211195161 U CN 211195161U CN 201921283342 U CN201921283342 U CN 201921283342U CN 211195161 U CN211195161 U CN 211195161U
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Abstract
The utility model relates to a safety protection articles for use technical field especially relates to a thermal-insulated blanket of fire prevention, cable joint and cable laying structure. The fireproof heat insulation blanket comprises a first fireproof layer, a heat insulation layer and a second fireproof layer which are sequentially stacked; a plurality of first cavities are arranged between the first fireproof layer and the heat insulation layer, and/or a plurality of second cavities are arranged between the second fireproof layer and the heat insulation layer; the opening of each first cavity faces the first fire-resistant layer, and/or the opening of each second cavity faces the second fire-resistant layer; fire extinguishing powder is arranged in at least part of the first cavity and/or the second cavity. The thermal-insulated fire blanket is thermal-insulated for the fire prevention, and the cladding can effectively reduce the probability that the conflagration took place in the cable or cable joint outside, can prevent that the conflagration from stretching to peripheral cable from a cable when the conflagration takes place, and thermal-insulated effect is excellent, can effectively protect circuit inner structure when the conflagration takes place.
Description
Technical Field
The utility model relates to a safety protection articles for use technical field especially relates to a thermal-insulated blanket of fire prevention, cable joint and cable laying structure.
Background
Nowadays, electricity plays an important role in the development of national economy and daily life of people, and the normal operation of a power system is a precondition and guarantee for realizing the stable development of society. In the process of cable laying, a plurality of cables often share a cable trench, or a cable middle connector is mounted with other running cable lines, in the actual power transmission process, because the inside of the cable generates heat in the high-voltage power transmission process, the poor contact of the cable connector generates breakdown or electric sparks, or is influenced by external naked fire or high temperature, the normal work of the cable is threatened, if yes, short circuit and open circuit occur, and if no, serious fire occurs. The fireproof function of the insulated cable in the current market is weaker, most of cable intermediate joints are subjected to waterproof treatment, the fire easily occurs when external fire or breakdown inside the cable occurs, and the normal work of the cable in the same ditch and the safety of the peripheral area are hardly guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a fireproof heat insulation blanket and a cable laying structure, which are used for solving the problems of fire resistance and poor heat insulation performance of the cable in the prior art.
In order to achieve the above and other related objects, an aspect of the present invention provides a fire-proof and heat-insulating blanket, which includes a first fire-proof layer, a heat-insulating layer, and a second fire-proof layer, which are sequentially stacked; a plurality of first cavities are arranged between the first fireproof layer and the heat insulation layer, and/or a plurality of second cavities are arranged between the second fireproof layer and the heat insulation layer; the opening of each first cavity faces the first fire-resistant layer, and/or the opening of each second cavity faces the second fire-resistant layer; fire extinguishing powder is arranged in at least part of the first cavity and/or the second cavity.
In some embodiments of the present invention, the layer body edge formed by the first fire-resistant layer, the thermal insulation layer and the second fire-resistant layer is closed by a fire-resistant material.
In some embodiments of the present invention, the first fire-retardant layer has a thickness of 0.2 to 2 mm;
in some embodiments of the present invention, the second fire-resistant layer has a thickness of 0.2 to 2 mm;
in some embodiments of the present invention, the thickness of the thermal insulation layer is 0.5-3 cm;
in some embodiments of the invention, the volume of the first cavity is 100cm3～1000cm3；
In some embodiments of the invention, the volume of the second cavity is 100cm3～1000cm3；
In some embodiments of the present invention, the number of the first cavities per unit area is 10 to 25;
in some embodiments of the present invention, the number of the second cavities per unit area is 10 to 25;
in some embodiments of the present invention, the number of first cavities filled with fire extinguishing powder between the first fire-proof layer and the thermal insulation layer is less than the number of second cavities filled with fire extinguishing powder between the second fire-proof layer and the thermal insulation layer;
in some embodiments of the present invention, the first cavity is a groove structure distributed on the thermal insulation layer; the second cavity is a groove structure distributed on the heat insulation layer.
In some embodiments of the present invention, the total number of the first cavities between the first fireproof layer and the heat insulating layer, which are filled with fire extinguishing powder, is less than or equal to 30%; the second cavity filled with fire extinguishing powder between the second fireproof layer and the heat insulating layer accounts for 70-100% of the total number of the second cavities between the second fireproof layer and the heat insulating layer.
In some embodiments of the present invention, the material of the first and/or second fire-resistant layer is selected from one or more of a ceramic rubber-glass fiber composite cloth, a high silica glass fiber cloth, and a ceramic polyolefin;
in some embodiments of the present invention, the material of the thermal insulation layer is selected from one or more of aerogel felt, aluminum silicate fiber, ceramic fiber, magnesium silicate fiber, alumina fiber, fiber blanket, and thermal insulation powder.
In some embodiments of the present invention, the fire extinguishing powder is selected from one or more of ammonium phosphate salt, sodium bicarbonate, sodium chloride, and potassium chloride dry powder fire extinguishing agent.
In some embodiments of the present invention, the thermal insulating powder is selected from one or more of aerogel powder, friction velvet, alumina, silica, silicate powder, and sulfate powder.
In some embodiments of the present invention, the material of the first and/or second fire-resistant layer is selected from a ceramic silicon rubber and glass fiber composite cloth; the material of the heat insulation layer is selected from aerogel felt or aerogel powder; the porosity of the aerogel is 95-98%, the pore diameter is 20-70nm, and the pore volume is 3.5 ml/g.
The utility model discloses another aspect provides a cable, the cable includes that cable body and at least one deck are as the fire prevention thermal blanket, the cladding of fire prevention thermal blanket is in cable body periphery, the cable body includes a plurality of conductors of cable and cable sheathing, the outer cladding of a plurality of conductors all has the insulating layer, it has the filling layer to fill between insulating layer and the cable sheathing.
Another aspect of the present invention provides a cable joint, the cable includes cable joint body and at least one deck as the utility model discloses a fireproof heat insulation blanket, cable joint is used for connecting two adjacent cable bodies, just cable joint is located between cable body and the fireproof heat insulation blanket.
The utility model discloses another aspect provides a cable laying structure, cable laying structure includes the cable pit, the cable pit is including having the open-ended ditch body, be equipped with a plurality of cable support on the lateral wall of the ditch body, each the cable support is in symmetry setting on the lateral wall of the ditch body, and with the lateral wall of the ditch body is perpendicular, be equipped with on the cable support the cable or the cable joint.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of the fire-proof and heat-insulating blanket of the present invention.
Fig. 2 is a schematic structural view of a second embodiment of the fire-proof and heat-insulating blanket of the present invention.
Fig. 3 is a schematic structural diagram of the cable of the present invention.
Fig. 4 is a schematic structural diagram of the cable connector of the present invention.
Fig. 5 is the schematic diagram of the cable laying structure of the present invention.
In the figure:
1. cable with a protective layer
11. Fireproof heat insulation blanket
111. First fireproof layer
112. Thermal insulation layer
113. Second fireproof layer
114. A first cavity
115. Second cavity
12. Cable body
121. Conductor
122. Filler material
123. Insulating layer
124. Cable sheath
2. Cable joint
21. Cable connector body
3. Cable trench
4. Cable support
Detailed Description
In the description of the present invention, it should be noted that the structure, ratio, size, etc. shown in the attached drawings of the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by the people familiar with the technology, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention does not have the substantial technical significance, and the modification of any structure, the change of the ratio relationship or the adjustment of the size should still fall within the range that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that can be achieved. While the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1-2, a first aspect of the present invention provides a fireproof heat insulation blanket, which includes a first fireproof layer 111, a heat insulation layer 112, and a second fireproof layer 113 stacked in sequence; a plurality of first cavities 114 are arranged between the first fireproof layer 111 and the heat insulation layer 112, and/or a plurality of second cavities 115 are arranged between the second fireproof layer 113 and the heat insulation layer 112; each of the first cavities 114 opens toward the first flame resistant layer 111, and/or each of the second cavities 115 opens toward the second flame resistant layer 113; the opening direction of each first cavity 114 is gradually increased from the heat insulation layer 112 to the first fireproof layer 111 or the second fireproof layer 113, and at least part of the first cavity 114 and/or the second cavity 115 is filled with fire extinguishing powder. The fire prevention thermal-insulated blanket can wrap up outside cable or cable joint the utility model provides an among the fire prevention thermal-insulated blanket, the flame retardant coating can play the fire prevention effect to inside thermal insulation material, can guarantee the integrality of structure, insulating layer 112 is thermal-insulated effectual, and density is low, guarantees the lightweight of overall structure when guaranteeing thermal-insulated effect. Simultaneously through first flame retardant coating 111, the fire prevention thermal-insulated blanket that obtains of range upon range of setting of insulating layer 112 and second flame retardant coating 113, can be used to cable or cable joint 2, the outer cable that covers the fire prevention thermal-insulated blanket or cable joint 2 can effectively reduce the probability that the conflagration took place, can prevent that the conflagration from stretching to peripheral cable from a cable when the conflagration breaing out, thermal-insulated effect is excellent, can effectively protect circuit inner structure when the conflagration takes place, guarantee that the circuit normally supplies power in the certain period, prolong the rescue time greatly, and economic loss is reduced. In addition, the first cavity 114 and/or the second cavity 115 are filled with fire extinguishing powder, and in case of fire, the first flame resistant layer 111 and/or the second flame resistant layer 113 may be surface cracked when subjected to a fire attack, because the opening direction of each first cavity 114 is gradually increased from the heat insulation layer 112 to the first fire prevention layer 111, and the opening direction of each second cavity 115 is gradually increased from the heat insulation layer 112 to the second fire prevention layer 113, the fire extinguishing powder wrapped in the first cavity 114 between the first fire prevention layer 111 and the heat insulation layer 112 or the fire extinguishing powder in the second cavity 115 between the second fire prevention layer 113 and the heat insulation layer 112 can be released more easily, and the fire extinguishing powder falls on a fire source to achieve the effect of extinguishing fire or slowing down the spread of fire, meanwhile, the first cavity 114 or the second cavity 115 which is not filled with fire extinguishing powder can be used as a heat dissipation channel so as to facilitate the heat dissipation of the cable.
As shown in fig. 1, in a preferred embodiment of the present invention, the fire-proof and heat-insulating blanket includes a first fire-proof layer 111, a heat-insulating layer 112 and a second fire-proof layer 113, which are sequentially stacked; a plurality of first cavities 114 are arranged between the first fireproof layer 111 and the heat insulation layer 112, and a plurality of second cavities 115 are arranged between the second fireproof layer 113 and the heat insulation layer 112; the opening of each first cavity 114 faces the first fireproof layer 111, the opening of each second cavity 115 faces the second fireproof layer 113, and fire extinguishing powder is arranged in at least part of the first cavity 114 and the second cavity 115; the layer body edge formed by the first fireproof layer 111, the heat insulation layer 112 and the second fireproof layer 113 is sealed by fireproof materials. And the first fire-proof layer 111, the second fire-proof layer 113 and the thermal insulation layer 112 are fixed by sewing or bonding.
Further, in use, the first fire-blocking layer 111 may be brought into contact with a cable or cable joint. The number of the first cavities 114 filled with fire extinguishing powder between the first fireproof layer 111 and the heat insulating layer 112 is less than that of the second cavities 115 filled with fire extinguishing powder between the second fireproof layer 113 and the heat insulating layer 112, since the first fire-retardant layer 111 is in direct contact with the cable or cable joint 2, the smaller the number of first cavities 114 filled with fire-extinguishing powder, because the first cavity 114 can serve as a heat dissipation channel, the more advantageous the heat dissipation of the cable itself, that is, in this embodiment, the first cavity 114 is mainly used as a heat dissipation channel, and the second fireproof layer 113 directly contacts a heat source, therefore, the larger the number of the second cavities 115 filled with fire extinguishing powder, the more the fire extinguishing powder wrapped in the gap between the first fire-proof layer 111 and the thermal insulation layer 112 is released, the better the fire extinguishing effect is, that is, the second cavities 115 in this embodiment are mainly used for extinguishing fire. In general, the total number of the first cavities 114 between the first fireproof layer 111 and the heat insulating layer 112, which are filled with fire extinguishing powder, is less than or equal to 30% of the total number of the first cavities 114 between the first fireproof layer 111 and the heat insulating layer 112; the second cavity 115 filled with fire extinguishing powder between the second fireproof layer 113 and the heat insulating layer 112 accounts for 70-100% of the total number of the second cavity 115 between the second fireproof layer 113 and the heat insulating layer 112.
As shown in fig. 2, according to another embodiment of the present invention, the fire-proof and heat-insulating blanket includes a first fire-proof layer 111, a heat-insulating layer 112 and a second fire-proof layer 113, which are sequentially stacked; a plurality of second cavities 115 are arranged between the second fireproof layer 113 and the heat insulation layer 112; each of the second cavities 115 opens toward the second fireproof layer 113; at least part of the second cavity 115 is filled with fire extinguishing powder. And the first fire-proof layer 111, the second fire-proof layer 113 and the thermal insulation layer 112 are fixed by sewing or bonding. In this embodiment, only the second cavity 115 is disposed between the second fireproof layer 113 and the heat insulating layer 112, and the number of the second cavities 115 filled with fire extinguishing powder between the second fireproof layer 113 and the heat insulating layer 112 can be reasonably distributed, so that fire extinguishing during fire can be guaranteed, and heat dissipation of the cable can be realized. In general, the second cavity 115 filled with fire extinguishing powder between the second fireproof layer 113 and the heat insulating layer 112 accounts for 70% to 100% of the total number of the second cavity 115 between the second fireproof layer 113 and the heat insulating layer 112.
In the fire-proof and heat-insulating blanket provided by the present invention, including the above embodiments, in general, the thickness of the first fire-proof layer 111 is 0.2-2 mm; the thickness of the second fireproof layer 113 is 0.2-2 mm; the thickness of the heat insulation layer 112 is 0.5-3 cm; the volume of the first cavity 114 is 100cm3～1000cm3(ii) a The volume of the second cavity 115 is 100cm3～1000cm3(ii) a The number of the first cavities 114 in a unit area is 10-25; the number of the second cavities 115 in a unit area is 10-25. Under the above parameters, good fireproof, heat insulation and heat dissipation effects of the cable or cable joint 2 can be ensured.
Further, the first cavity 114 is a groove structure distributed on the thermal insulation layer 112, and/or the second cavity 115 is a groove structure distributed on the thermal insulation layer 112.
In the present invention, the first fireproof layer 111 and/or the second fireproof layer 113 are made of a material selected from one or more of a ceramic rubber glass fiber composite cloth, a high silica glass fiber cloth, and a ceramic polyolefin.
Preferably, the first fireproof layer 111 and/or the second fireproof layer 113 is made of a ceramic silicon rubber and glass fiber composite cloth, the ceramic silicon rubber and glass fiber composite cloth is formed by rolling glass fiber cloth and ceramic silicon rubber, the glass fiber cloth is alkali-free glass fiber cloth, the alkali-free glass fiber cloth is excellent in insulating property, the glass fiber cloth provides structural strength for the ceramic silicon rubber and glass fiber composite cloth, the ceramic silicon rubber takes silicon rubber as a main material, a ceramic filler is added, the ceramic can be rapidly sintered into ceramic at the temperature of over 600 ℃, a compact and firm ceramic body structure is formed on the surface of the material, the ceramic body is firmer as the temperature is higher, the ceramic body has the advantages of high melting point, high hardness, high wear resistance, oxidation resistance and the like, and the structural stability can be still ensured at 1500 ℃. Thereby playing the role of resisting the spread of flame to the inner layer material. In a fire environment, the second fire-resistant layer 113 is rapidly fired into a ceramic-like hard shell, and the armor of the hard shell provides a fire-resistant effect to the internal insulation material, thereby ensuring structural integrity.
The utility model provides an among the fire prevention heat insulating blanket, the material that the material coefficient of heat conductivity of insulating layer 112 is low, the coefficient of heat conductivity of insulating layer is less than or equal to 0.05 w/m.k. The material of the thermal insulation layer 112 is selected from one or more of aerogel felt, aluminum silicate fiber, ceramic fiber, magnesium silicate fiber, alumina fiber, fiber blanket and thermal insulation powder. The heat insulation powder is selected from one or more of aerogel powder, friction velvet, alumina, silica, silicate powder and sulfate powder. The alumina and silica may be spherical. When the material of the heat insulation layer is selected from heat insulation powder, the heat insulation layer is integrally a heat insulation cavity filled with the heat insulation powder.
Preferably, the thermal insulation layer 112 is selected from aerogel felt, the aerogel felt is made of silica aerogel as a main body material and compounded in the reinforcing fibers, the density of the aerogel felt is less than 220kg/m3, the thermal conductivity coefficient is 0.017-0.023 w/m.k, and the pore size is lower than the average free path of air molecules under normal pressure, so that the air molecules are approximately static in the pores of the aerogel, thereby avoiding the convective heat transfer of air, the extremely low volume density of the aerogel and the curved path of the nano-network structure also prevent the gaseous and solid heat conduction, and the pore walls which tend to be infinite can reduce the heat radiation to the minimum. The three aspects act together, almost all ways of heat transfer are blocked, and the aerogel achieves the heat insulation effect which is incomparable with other materials, even the heat conductivity coefficient is far lower than that of static air at normal temperature, namely 0.025 w/m.k. The porosity of the aerogel layer is 95-98%, the pore diameter is 20-70nm, and the specific surface area is 500-650m2Per g, density of 12.5-18kg/m3The pore volume was 3.5 ml/g. The aerogel layer is good in heat insulation effect and low in density, and the lightweight of the whole structure can be guaranteed while the heat insulation effect is guaranteed.
In the fireproof and heat-insulating blanket provided by the utility model, the fire extinguishing powder is selected from one or more of ammonium phosphate salt, sodium bicarbonate, sodium chloride and potassium chloride dry powder fire extinguishing agents. The fire extinguishing components in the dry powder fire extinguishing agent are inactive substances of combustion reaction, and when the fire extinguishing components enter flames of a combustion area, free radicals generated by decomposition react with free radicals such as H and OH generated in the flame combustion reaction, the free radicals generated by the combustion reaction are captured and stopped, and the rate of the combustion reaction is reduced. When the concentration of the dry powder in the flame is high enough, the contact area with the flame is large enough, and the termination rate of the free radicals is greater than the generation rate of the combustion reaction, the chain combustion reaction is terminated, and the flame is extinguished. The dry powder extinguishing agent is decomposed in combustion flame by heat absorption, and the decomposition reaction in each step is an endothermic reaction, so that the dry powder extinguishing agent has a better cooling effect. In addition, ammonium dihydrogen phosphate decomposes at high temperature to form a layer of glassy film residue covering on the surface of the solid matter, which has the functions of isolating oxygen, preventing combustion and preventing re-combustion. When a fire disaster occurs, the fire-proof layer is attacked by flames to generate cracks on the surface, so that the fire extinguishing powder wrapped in the first cavity 114 and/or the second cavity 115 between the first fire-proof layer 111 and/or the second fire-proof layer 113 and the heat-insulating layer 112 can be released more easily, and the fire extinguishing powder falls on a fire source to achieve the effect of extinguishing the fire or slowing down the fire spreading.
The utility model discloses a second aspect provides a cable, as shown in fig. 3, the cable include cable body 12 and at least one deck fire prevention thermal blanket, the cladding of fire prevention thermal blanket is in cable body 12 periphery, cable body 12 includes a plurality of conductors 121 and cable sheath 124, a plurality of conductors 121 all have the cladding to have insulating layer 123 outward, it has filling layer 122 to fill between insulating layer 123 and the cable sheath 124. The filling layer 122 is one or a combination of more of ceramic silicone rubber, ceramic polyolefin, glass fiber rope, inorganic paper rope, non-woven fabric and the like. The cable sheath is made of polyvinyl chloride (PVC), Polyethylene (PE), fluorinated ethylene propylene (F46), nylon, polyolefin and the like. The fireproof heat insulation blanket can protect the cable from fire and heat insulation, so that the situation that in the actual power transmission process, the normal work of the cable is threatened due to the fact that the inside of the cable generates heat or is influenced by external open fire or high temperature, short circuit and open circuit happen slightly, and serious fire happens seriously can be avoided.
A third aspect of the present invention provides a cable joint, as shown in fig. 4, the cable includes a cable joint body 21 and the fireproof heat insulation blanket, the cable joint body 21 is used for connecting two adjacent cable bodies 12, and the cable joint body 21 is located between the cable body 12 and the fireproof heat insulation blanket. The fireproof heat insulation blanket can protect the cable joint 2 from fire and heat, so that the situation that in the actual power transmission process, due to the fact that the inside of the cable generates heat in the high-voltage power transmission process, the cable joint 2 is in poor contact to generate breakdown or electric sparks, or the cable joint is influenced by external naked fire or high temperature to threaten the normal work of the cable, short circuit and open circuit happen in a light case, and a major fire hazard happens in a heavy case can be avoided.
The utility model discloses the fourth aspect provides a cable laying structure, as shown in fig. 5, cable laying structure includes cable pit 3, cable pit 3 is including having the open-ended ditch body, be equipped with a plurality of cable support 4 on the lateral wall of the ditch body, each cable support 4 is in symmetry setting on the lateral wall of the ditch body, and with the lateral wall of the ditch body is perpendicular, be equipped with on cable support 4 cable 1 or cable joint 2.
To sum up, the utility model discloses in, first flame retardant coating 111, second flame retardant coating 113 can play the fire prevention effect to inside thermal insulation material, can guarantee the integrality of structure, insulating layer 112 is thermal-insulated effectual, guarantees the lightweight of whole structure when guaranteeing thermal-insulated effect. The fireproof heat insulation blanket obtained by the stacking arrangement of the first fireproof layer 111, the heat insulation layer 112 and the second fireproof layer 113 is coated on the outer side of the cable 1 or the cable joint 2. The probability that can effectively reduce the conflagration and take place can prevent that the conflagration from stretching to peripheral cable from a cable when taking place the conflagration, and thermal-insulated effect is excellent, can effectively protect circuit inner structure when the conflagration takes place, guarantees that the circuit normally supplies power in the certain time, prolongs the rescue time greatly, reduces economic loss. The cable fireproof heat insulation blanket is light in weight, good in flexibility and convenient to construct, and the load of the cable support 4 cannot be increased too much after installation. In addition, once a fire breaks out, the fire-proof layer is attacked by flames to generate cracks on the surface, so that fire extinguishing powder wrapped in the first cavity 114 and/or the second cavity 115 between the first fire-proof layer 111 and/or the second fire-proof layer 113 and the thermal insulation layer 112 can be released more easily, the fire extinguishing powder falls at a fire source to achieve the effect of extinguishing the fire or slowing down the fire from spreading, and a heat dissipation channel can be formed in the first cavity 114 and/or the second cavity 115 which is not filled with the fire extinguishing powder, so that the heat dissipation of the cable is facilitated.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A fireproof heat insulation blanket is characterized by comprising a first fireproof layer (111), a heat insulation layer (112) and a second fireproof layer (113) which are sequentially stacked;
a plurality of first cavities (114) are arranged between the first fireproof layer (111) and the heat insulation layer (112), and/or a plurality of second cavities (115) are arranged between the second fireproof layer (113) and the heat insulation layer (112);
the opening of each first cavity (114) faces the first fire-resistant layer (111) and/or the opening of each second cavity (115) faces the second fire-resistant layer (113);
fire extinguishing powder is arranged in at least part of the first cavity (114) and/or the second cavity (115).
2. A fire and heat protection blanket as claimed in claim 1, wherein the edges of the layer formed by the first fire-resistant layer (111), the heat-insulating layer (112) and the second fire-resistant layer (113) are closed by a fire-resistant material.
3. A fire and heat protection blanket as claimed in claim 1, wherein the first fire protection layer (111) has a thickness of 0.2-2 mm;
and/or the thickness of the second fireproof layer (113) is 0.2-2 mm;
and/or the thickness of the heat insulation layer (112) is 0.5-3 cm;
and/or the volume of the first cavity (114) is 100cm3～1000cm3；
And/or the volume of the second cavity (115) is 100cm3～1000cm3；
And/or the number of the first cavities (114) in a unit area is 10-25;
and/or the number of the second cavities (115) in a unit area is 10-25;
and/or the number of first cavities (114) filled with fire extinguishing powder between the first fireproof layer (111) and the heat insulation layer (112) is less than that of second cavities (115) filled with fire extinguishing powder between the second fireproof layer (113) and the heat insulation layer (112);
and/or the first cavity (114) is a groove structure distributed on the heat insulation layer (112);
and/or the second cavity (115) is a groove structure distributed on the heat insulation layer (112);
and/or the total number of the first cavities (114) between the first fireproof layer (111) and the heat insulation layer (112) is less than or equal to 30% by filling the first cavities (114) between the first fireproof layer (111) and the heat insulation layer (112) with fire extinguishing powder; the second cavity (115) filled with fire extinguishing powder between the second fireproof layer (113) and the heat insulation layer (112) accounts for 70-100% of the total number of the second cavity (115) between the second fireproof layer (113) and the heat insulation layer (112).
4. The fire-proof and heat-insulating blanket as claimed in claim 1, wherein the material of the first fire-proof layer (111) and/or the second fire-proof layer (113) is selected from one of ceramic rubber-glass fiber composite cloth, high silica glass fiber cloth and ceramic polyolefin;
and/or the material of the heat insulation layer (112) is selected from one of aerogel felt, aluminum silicate fiber, ceramic fiber, magnesium silicate fiber, alumina fiber, fiber blanket and heat insulation powder.
5. The fire-proof and heat-insulating blanket as claimed in claim 1, wherein the fire-extinguishing powder is selected from one of ammonium phosphate, sodium bicarbonate, sodium chloride and potassium chloride dry powder fire-extinguishing agent.
6. A fire and heat resistant blanket as in claim 4, wherein said heat resistant powder is selected from one of aerogel powder, friction fleece, alumina, silica, silicate powder, sulfate powder.
7. A fire and heat protection blanket as claimed in claim 4 or 6, wherein the material of the first fire protection layer (111) and/or the second fire protection layer (113) is selected from a ceramic silicon rubber and glass fiber composite cloth; the material of the heat insulation layer (112) is selected from aerogel felt or aerogel powder; the porosity of the aerogel is 95-98%, the pore diameter is 20-70nm, and the pore volume is 3.5 ml/g.
8. A cable, characterized in that the cable comprises a cable body (12) and at least one layer of fire-proof thermal insulation blanket according to any claim 1 to 7, the fire-proof thermal insulation blanket is coated on the periphery of the cable body (12), the cable body (12) comprises a plurality of conductors (121) of the cable and a cable sheath (124), the plurality of conductors (121) are coated with an insulating layer (123), and a filling layer (122) is filled between the insulating layer (123) and the cable sheath (124).
9. A cable joint, characterized in that the cable comprises a cable joint body (21) and at least one layer of fire protection and insulation blanket according to any of claims 1 to 7, the cable joint (2) is used for connecting two adjacent cable bodies (12), and the cable joint (2) is located between the cable bodies (12) and the fire protection and insulation blanket.
10. A cable laying structure, characterized in that the cable laying structure comprises a cable trench (3), the cable trench (3) comprises a trench body having an opening, a plurality of cable holders (4) are provided on a sidewall of the trench body, each cable holder (4) is symmetrically provided on the sidewall of the trench body and is perpendicular to the sidewall of the trench body, the cable holder (4) is provided with the cable according to claim 8 or the cable joint (2) according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921283342.3U CN211195161U (en) | 2019-08-08 | 2019-08-08 | Fireproof heat insulation blanket, cable joint and cable laying structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921283342.3U CN211195161U (en) | 2019-08-08 | 2019-08-08 | Fireproof heat insulation blanket, cable joint and cable laying structure |
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| Publication Number | Publication Date |
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| CN211195161U true CN211195161U (en) | 2020-08-07 |
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| CN201921283342.3U Active CN211195161U (en) | 2019-08-08 | 2019-08-08 | Fireproof heat insulation blanket, cable joint and cable laying structure |
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| CN (1) | CN211195161U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406190A (en) * | 2019-08-08 | 2019-11-05 | 常州市沃科科技有限公司 | A kind of fire-proof and thermal-insulation blanket, cable, cable connector and cable laying structure |
| CN111986430A (en) * | 2020-09-01 | 2020-11-24 | 宁波葆尔新材料有限公司 | Intelligent early-warning fireproof and explosion-proof blanket and preparation method and application thereof |
-
2019
- 2019-08-08 CN CN201921283342.3U patent/CN211195161U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406190A (en) * | 2019-08-08 | 2019-11-05 | 常州市沃科科技有限公司 | A kind of fire-proof and thermal-insulation blanket, cable, cable connector and cable laying structure |
| CN111986430A (en) * | 2020-09-01 | 2020-11-24 | 宁波葆尔新材料有限公司 | Intelligent early-warning fireproof and explosion-proof blanket and preparation method and application thereof |
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