CN113903509B - Cable, fireproof and explosion-proof blanket and application thereof - Google Patents
Cable, fireproof and explosion-proof blanket and application thereof Download PDFInfo
- Publication number
- CN113903509B CN113903509B CN202111007013.8A CN202111007013A CN113903509B CN 113903509 B CN113903509 B CN 113903509B CN 202111007013 A CN202111007013 A CN 202111007013A CN 113903509 B CN113903509 B CN 113903509B
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- explosion
- blanket
- cavity
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- layer
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Links
- 239000010410 layer Substances 0.000 claims abstract description 150
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 97
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 97
- 239000010439 graphite Substances 0.000 claims abstract description 97
- 229920002748 Basalt fiber Polymers 0.000 claims abstract description 32
- 239000011358 absorbing material Substances 0.000 claims abstract description 21
- 229920000271 Kevlar® Polymers 0.000 claims abstract description 20
- 239000004761 kevlar Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 239000011229 interlayer Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 51
- 238000004880 explosion Methods 0.000 claims description 40
- 239000000853 adhesive Substances 0.000 claims description 18
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 8
- 238000009958 sewing Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 238000009941 weaving Methods 0.000 claims 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 18
- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 description 9
- 239000002346 layers by function Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000009970 fire resistant effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000741 silica gel Substances 0.000 description 5
- 229910002027 silica gel Inorganic materials 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 230000001007 puffing effect Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- XLFWNJIXUFKUQT-UHFFFAOYSA-J calcium zinc dicarbonate Chemical compound [Ca++].[Zn++].[O-]C([O-])=O.[O-]C([O-])=O XLFWNJIXUFKUQT-UHFFFAOYSA-J 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010892 electric spark Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- BPKGOZPBGXJDEP-UHFFFAOYSA-N [C].[Zn] Chemical compound [C].[Zn] BPKGOZPBGXJDEP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- IPCXNCATNBAPKW-UHFFFAOYSA-N zinc;hydrate Chemical compound O.[Zn] IPCXNCATNBAPKW-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
- B32B2262/0269—Aromatic polyamide fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Electric Cable Installation (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The invention relates to a cable, a fireproof and explosion-proof blanket and application thereof. The fire-proof and explosion-proof blanket has a blanket body comprising: the energy absorbing material comprises an insulating layer, a basalt layer, an expandable graphite bag, an explosion-proof structure and an energy absorbing material layer. The basalt fiber layer is connected with the insulating layer and is surrounded into an interlayer cavity; the interlayer cavity comprises a fireproof cavity, an explosion-proof cavity and a buffer cavity which are sequentially arranged along the extending direction of the blanket main body. The expandable graphite bag is filled in the fireproof cavity. The explosion-proof structure is filled in the explosion-proof cavity and comprises an arc-resistant layer, a hand-tearing stainless steel layer and a Kevlar fiber layer which are sequentially stacked, wherein the arc-resistant layer is arranged on one side close to the insulating layer, and the Kevlar fiber layer is arranged on one side close to the basalt fiber layer. The energy absorbing material layer is filled in the buffer cavity. The fireproof and explosion-proof blanket has excellent fireproof and explosion-proof performance through reasonable arrangement of the functional structure, can be wound and wrapped at the joint of the high-voltage cable to be used as protection, and is simple and convenient to use and operate.
Description
Technical Field
The invention relates to the technical field of safety of power equipment, in particular to a cable, a fireproof and explosion-proof blanket and application thereof.
Background
The wire and cable is the carrier for the power transmission. Because the cable is laid in the tunnel, the manufacture of the cable intermediate joint is influenced by factors such as field manufacture conditions, materials, processes and the like, and the cable intermediate joint becomes a weak link in a cable line. Once the cable intermediate head breaks down, the generated destructive force can not only cause the power failure of the cable line to stop service, but also cause large-scale damage to the cable line, electric power facilities and personnel running on the periphery, and even secondary accidents can be caused. With the development of urban economy, high-voltage cable lines of 110kV and above laid in tunnels are continuously increased. In order to save channel resources, the application conditions of cabling of 2.4m small-diameter tunnels, calandria and cable wells are very common, and the condition that cable line construction is carried out under the condition that a cable line is running in the small-diameter tunnels or in the calandria often exists, so that great challenges are brought to the safety of constructors. However, small diameter cable tunnels and cable wells are limited in space, resulting in a conventional explosion proof housing not being installed therein. The cable tunnel is sealed in environment, personnel enter and exit the manhole and are long in distance, when explosion, fire smoke and the like are caused by sudden faults of cable joints and the like in the tunnel, the cable tunnel can cause larger damage to other nearby equipment, and the personnel safety of operators can be threatened.
Disclosure of Invention
Based on the above, it is necessary to provide a fireproof and explosion-proof blanket which can be used for a cable intermediate joint, is simple to use and operate and has good fireproof and explosion-proof performance, and an application thereof.
In addition, the cable wrapped by the fireproof and explosion-proof blanket is also provided.
In one aspect of the present invention, a fire and explosion blanket is provided having a blanket body; the blanket body includes:
an insulating layer;
the basalt fiber layer is connected with the insulating layer and is surrounded to form an interlayer cavity; the interlayer cavity comprises a fireproof cavity, an explosion-proof cavity and a buffer cavity which are sequentially arranged along the extending direction of the blanket main body;
an expandable graphite bag filled in the fireproof cavity;
the explosion-proof structure is filled in the explosion-proof cavity and comprises an arc-resistant layer, a hand-tearing stainless steel layer and a Kevlar fiber layer which are sequentially stacked, wherein the arc-resistant layer is arranged on one side close to the insulating layer, and the Kevlar fiber layer is arranged on one side close to the basalt fiber layer; and
And the energy absorption material layer is filled in the buffer cavity.
In some embodiments, the fire-proof cavity, the explosion-proof cavity, and the buffer cavity are spaced apart and independently disposed;
and/or, along the extension direction of the blanket body, the size of the fireproof cavity is smaller than the size of the explosion-proof cavity, and the size of the explosion-proof cavity is smaller than the size of the buffer cavity.
In some of these embodiments, the expandable graphite bag is filled with a mixture of expandable graphite particles and modified expandable graphite particles.
In some of these embodiments, the mass ratio of the expandable graphite particles to the modified expandable graphite particles in the mixture is 1: (1-10).
In some of these embodiments, the expandable graphite bag is separated by stitching into a plurality of mutually independent pockets.
In some embodiments, the energy absorbing material layer is made of rubber.
In some of these embodiments, the fire and explosion blanket further comprises:
and the fastening component is arranged on the outer surface of the blanket main body and is positioned at one side close to the buffer cavity.
In some of these embodiments, the fastening assembly comprises a plurality of securing units disposed side-by-side on the blanket body;
the fixing unit includes:
one end of the strapping tape is fixed on the blanket main body, and the other end of the strapping tape is exposed out of the blanket main body; and
The magic buckle comprises a hook surface and an adhesive surface, wherein the hook surface is arranged at one end of the strapping tape, which is fixed with the blanket main body, the adhesive surface is arranged at the other end of the strapping tape, which is exposed out of the fire explosion-proof blanket main body, and the hook surface and the adhesive surface are respectively positioned on two opposite surfaces of the magic buckle.
On the other hand, the invention also provides application of the fireproof and explosion-proof blanket in preparing high-voltage cable protection.
In another aspect of the invention, a cable is provided, which comprises a cable body and the fireproof and explosion-proof blanket, wherein the fireproof and explosion-proof blanket is wound and wrapped on the cable body; one side of the fireproof and explosion-proof blanket, which is close to the fireproof cavity, is wrapped in, and one side of the fireproof and explosion-proof blanket, which is close to the buffer cavity, is wrapped out.
The main body of the fireproof and explosion-proof blanket comprises an insulating layer and a basalt fiber layer, wherein the insulating layer has the electrical insulation characteristic, can block electric sparks, has the characteristics of high strength, electrical insulation, corrosion resistance, high temperature resistance and the like, and can serve as an outer surface to play a protective role. And a fireproof cavity, an explosion-proof cavity and a buffer cavity are formed between the insulating layer and the basalt fiber layer. The fireproof cavity is filled with the expandable graphite bag, and the expandable graphite can absorb a large amount of heat in the expansion process, and can physically block oxygen to avoid combustion spreading. The explosion-proof structure with the arc-resistant layer, the hand-torn stainless steel layer and the Kevlar fiber layer which are sequentially laminated is arranged in the explosion-proof cavity, has higher mechanical strength and better high-temperature resistance, can bear impact force when explosion occurs, and plays a role in excellent explosion prevention. The energy-absorbing material layer can effectively absorb stress, plays a role in buffering, and reduces threat of explosion to high-voltage cables and operators. The fireproof and explosion-proof blanket has excellent fireproof and explosion-proof performance through reasonable arrangement of the functional structure, can be wrapped at the joint of the high-voltage cable to be used as protection, and is simple and convenient to use and operate.
Drawings
Fig. 1 is a schematic structural view of a cross section of a main body of a fire-proof and explosion-proof blanket according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another cross section of a main body of a fire-resistant and explosion-proof blanket according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of an expandable graphite bag in a fire-resistant and explosion-proof blanket according to an embodiment of the present invention;
FIG. 4 is a schematic top view of a fire and explosion blanket according to an embodiment of the present invention;
fig. 5 is a bottom view of a schematic structural view of a fire and explosion blanket according to an embodiment of the present invention;
fig. 6 is a side view of a schematic structural diagram of a fire and explosion blanket according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a fixing unit of a fire-proof and explosion-proof blanket according to an embodiment of the present invention;
reference numerals: 100. a blanket body; 101. an insulating layer; 102. a basalt fiber layer; 103. an expandable graphite bag; 104. an arc-resistant layer; 105. a hand-torn stainless steel layer; 106. a Kevlar fiber layer; 107. an energy absorbing material layer; 200. a fixing unit; 201. strapping tape; 202. sticking; 203. and (5) hooking surfaces.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1-3, one embodiment of the present invention provides a fire-resistant and explosion-proof blanket having a blanket body 100; blanket body 100 includes: insulation layer 101, basalt fiber layer 102, expandable graphite bag 103, explosion-proof structure (not labeled) and energy absorbing material layer 107.
The insulating layer 101 has electrical insulation property, can block electric spark, and the basalt fiber layer 102 has the characteristics of high strength, electrical insulation, corrosion resistance, high temperature resistance and the like, and can serve as an outer surface for protection. The basalt fiber layer 102 is connected with the insulating layer 101 and is surrounded into an interlayer cavity; the interlayer cavity includes a fireproof cavity, an explosion-proof cavity, and a buffer cavity sequentially provided along the extension direction of the blanket body 100.
The expandable graphite bag 103 fills the fire-resistant cavity. The expandable graphite can absorb a large amount of heat in the expansion process, and can physically block oxygen to avoid combustion spreading.
The explosion-proof structure (not shown) is filled in the explosion-proof cavity and comprises an arc-resistant layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106 which are sequentially stacked, wherein the arc-resistant layer 104 is arranged on one side close to the insulating layer 101, and the Kevlar fiber layer 106 is arranged on one side close to the basalt fiber layer 102. The anti-explosion structure sequentially stacks the anti-arc layer 104, the hand-tearing stainless steel layer 105 and the Kevlar fiber layer 106, has higher mechanical strength and better high-temperature resistance, can bear impact force when explosion occurs, and plays a role in excellent explosion prevention.
The energy absorbing material layer 107 fills the buffer cavity. The energy absorbing material layer 107 is capable of effectively absorbing stresses and reducing the threat of an explosion to the high voltage cable and the operator.
The fireproof and explosion-proof blanket has excellent fireproof and explosion-proof performance through reasonable arrangement of the functional structure, can be wrapped at the joint of the high-voltage cable to be used as protection, and is simple and convenient to use and operate.
In some of these embodiments, the fire-resistant chamber, the explosion-resistant chamber, and the buffer chamber are spaced apart and independently disposed. Specifically, the fire-proof cavity, the explosion-proof cavity, and the buffer cavity may be separated by a suture.
In some of these embodiments, the fire-protection cavity has a smaller dimension than the explosion-protection cavity and the explosion-protection cavity has a smaller dimension than the buffer cavity along the extension of blanket body 100.
In some of these embodiments, the expandable graphite bag 103 is filled with a mixture of expandable graphite particles and basic zinc carbonate-calcium carbonate modified expandable graphite particles. The mixture of expandable graphite particles and modified expandable graphite particles can absorb a large amount of heat to suppress combustion, and can absorb surrounding organic matters to reduce fire.
In some of these embodiments, the mass ratio of expandable graphite particles to zinc carbonate-calcium carbonate modified expandable graphite particles in the mixture is 1: (1-10).
In some of these embodiments, the method of preparing the modified expandable graphite particles comprises the following steps (1) - (3).
(1) Crushing expandable graphite, and then carrying out microwave puffing on the crushed expandable graphite for 20-40 s under the power of 100W to obtain a primary product.
(2) And ultrasonically mixing the initial product, basic zinc carbonate and water, and then adding calcium carbonate powder for continuous mixing to obtain a mixture.
(3) And (3) centrifugally separating the mixture to obtain a precipitate, and drying to obtain the modified expandable graphite particles.
Basic zinc carbonate in the modified expandable graphite particles is decomposed at high temperature to generate carbon dioxide and water, and calcium carbonate is decomposed at high temperature to generate carbon dioxide, so that combustion can be further restrained, and the flame retardant property is good.
In some of these embodiments, the mass ratio of basic zinc carbonate to initial product is 1: (10-20), the mass ratio of the basic carbon zinc to the calcium carbonate powder is 1: (0.2-0.5).
In some of these embodiments, the expandable graphite bag 103 is separated by stitching into a plurality of mutually independent pockets. Each of the pockets is filled with a mixture of expandable graphite particles and basic zinc carbonate-calcium carbonate modified expandable graphite particles. The separation of the expandable graphite bag 103 into a plurality of mutually independent pockets ensures that the filled expandable graphite particles and the modified expandable graphite particles do not undergo significant displacement.
In some of these embodiments, the blanket body also includes a fiberglass silicone layer (not shown). The expandable graphite bag 103 is sewn on the surface of the glass fiber silica gel layer, and then the expandable graphite bag 103 and the glass fiber silica gel layer are filled in the fireproof cavity together.
In some of these embodiments, the energy absorbing material is rubber. Further, the energy absorbing material is rubber with an anti-corrosion coating on the surface.
In some of these embodiments, the insulating layer 101 is woven from an arc resistant material, hand-torn stainless steel, and kevlar.
Referring to fig. 4-7, in some embodiments, the fire and explosion blanket further comprises: and a fastening assembly. The fastening assembly is provided on the outer surface of blanket body 100 on the side adjacent to the cushioning cavity. The fastening assembly is capable of securing the wrapped fire and explosion blanket body 100 to the surface of the high voltage cable.
In some of these embodiments, the fastening assembly includes a plurality of fixing units 200 disposed side by side on the blanket body 100.
The fixing unit 200 includes strapping 201 and velcro fasteners (202, 203).
One end of strapping 201 is fixed to blanket body 100 and the other end is exposed to blanket body 100.
The velcro fastener (202, 203) includes a hook surface 203 and an adhesive surface 202. The hook surface 203 is disposed at one end of the strapping 201 fixed to the blanket body 100, the adhesive surface 202 is disposed at the other end of the strapping 201 exposed to the fire-fighting blanket body 100, and the hook surface 203 and the adhesive surface 202 are respectively disposed on two opposite surfaces of the magic buckle. The fixing unit 200 of this structural design can twine a circle on the blanket main body 100 surface of the fire-proof and explosion-proof blanket of the wraparound, connect through the hook face 203 and the sticky face 202 of the magic buckle, fix the blanket main body 100 of the fire-proof and explosion-proof blanket.
The invention further provides an application of the fireproof and explosion-proof blanket in high-voltage cable protection.
The invention further provides a cable, which comprises a cable body and the fireproof and explosion-proof blanket. The fireproof and explosion-proof blanket is wound and wrapped on the cable body. One side of the fireproof and explosion-proof blanket, which is close to the fireproof cavity, is wrapped inside, and one side of the fireproof and explosion-proof blanket, which is close to the buffer cavity, is wrapped outside. Further, the expandable graphite bag 103 filled in the fireproof cavity is wound and wrapped around the cable joint at least one circle to form an innermost fireproof functional layer, and when the winding is continued, the explosion-proof structure in the explosion-proof cavity winds and wraps around the cable joint at least one circle again to form an intermediate explosion-proof functional layer, and when the winding is continued again, the energy-absorbing material layer 107 in the buffering cavity continues to wind and wraps around at least one circle to form an outermost buffering functional layer. Good fireproof and explosion-proof functions are achieved through the wrapping of the fireproof functional layer, the explosion-proof functional layer and the buffer functional layer.
In other words, the finally formed cable comprises, in order from the cable body to the outer layer, at least one fire protection unit, at least one explosion protection unit and at least one buffer unit, which are arranged in a stack. The fireproof unit comprises an insulating layer, an expandable graphite bag and a basalt fiber layer which are sequentially stacked; the explosion-proof unit comprises an insulating layer, an explosion-proof structure and a basalt fiber layer which are sequentially stacked; the buffer unit comprises an insulating layer, an energy absorbing material layer and a basalt fiber layer which are sequentially stacked.
The following are specific examples.
Example 1:
the fire and explosion protection blanket of this embodiment includes a blanket body 100 and a fastening assembly for wrapping the fire and explosion protection blanket at a high voltage cable joint. The blanket body comprises an insulating layer 101 and a basalt fiber layer 102, the insulating layer 101 and the basalt fiber layer 102 are respectively the upper surface and the lower surface of the blanket body 100, the side edges of the basalt fiber layer 102 wrap and connect the side edges of the insulating layer 101, an interlayer cavity is formed between the insulating layer 101 and the basalt fiber layer 102, and the interlayer cavity is divided into a fireproof cavity, an explosion-proof cavity and a buffer cavity by sewing lines. The fireproof cavity, the explosion-proof cavity and the buffer cavity are sequentially wrapped at the joint of the high-voltage cable, and the widths of the fireproof cavity, the explosion-proof cavity and the buffer cavity show increasing trend.
The fireproof cavity is filled with a plurality of expandable graphite bags 103, expandable graphite particles are filled in the bag body of each expandable graphite bag 103, and the expandable graphite bags 103 are sewn on the glass fiber silica gel layer; an anti-arc layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106 are sequentially arranged in the explosion-proof cavity from top to bottom; the buffer cavity is filled with a layer of energy absorbing material. The energy absorbing material is rubber.
The insulating layer 101 is a composite layer woven by an arc-resistant layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106.
The expandable graphite bag 103 is filled with mixed particles of expandable graphite particles and modified expandable graphite particles, and the weight ratio of the expandable graphite particles to the modified expandable graphite particles is 1:1.
The preparation method of the modified expandable graphite particles comprises the following steps: placing expandable graphite into a ball mill for crushing, then placing the crushed expandable graphite into a microwave oven, and puffing for 20s under the condition of 100W to obtain a primary product; and adding the initial product and basic zinc carbonate into an ultrasonic stirrer, adding water, stirring, adding calcium carbonate powder, continuously stirring, performing centrifugal separation after stirring, and drying the separated precipitate to obtain the modified expandable graphite particles. Wherein, the weight ratio of basic zinc carbonate to the initial product is 1:10, the addition amount of the calcium carbonate powder is 1/5 of the weight of the basic zinc carbonate.
The bag body of the expandable graphite bag 103 is divided into a plurality of mutually independent bag chambers by sewing lines.
The fastening assembly comprises a plurality of fixing units 200 which are arranged on the fireproof and explosion-proof blanket body side by side, each fixing unit 200 comprises a strapping 201 and a magic buckle, one end of the strapping 201 is fixed on one side, close to the buffer cavity, of the surface of the basalt fiber layer 102, and the other end of the strapping 201 extends out of the main body of the fireproof and explosion-proof blanket. The magic buckle comprises a hook surface 203 and an adhesive surface 202, wherein the hook surface 203 is arranged at one end of the strapping 201 fixed on the surface of the basalt fiber layer 102, the adhesive surface 202 is arranged at one end of the strapping 201 extending out of the main body of the fire explosion-proof blanket, and the hook surface 203 is opposite to the adhesive surface 202.
Example 2:
the fire and explosion protection blanket of this embodiment is basically the same as embodiment 1, except that: the mass ratio of expandable graphite particles to modified expandable graphite particles in expandable graphite bag 103 is different, and the preparation method of modified expandable graphite particles is different.
The fire and explosion protection blanket of this embodiment includes a blanket body 100 and a fastening assembly for wrapping the fire and explosion protection blanket at a high voltage cable joint. The fireproof and explosion-proof blanket body comprises an insulating layer 101 and a basalt fiber layer 102, wherein the insulating layer 101 and the insulating layer 101 are respectively the upper surface and the lower surface of the blanket body 100, the side edges of the basalt fiber layer 102 wrap and connect the side edges of the insulating layer 101, an interlayer cavity is formed between the insulating layer 101 and the basalt fiber layer 102, and the interlayer cavity is divided into a fireproof cavity, an explosion-proof cavity and a buffer cavity by sewing lines. The fireproof cavity, the explosion-proof cavity and the buffer cavity are sequentially wrapped at the joint of the high-voltage cable, and the widths of the fireproof cavity, the explosion-proof cavity and the buffer cavity show increasing trend.
The fireproof cavity is filled with a plurality of expandable graphite bags 103, expandable graphite particles are filled in the bag body of each expandable graphite bag 103, and the expandable graphite bags 103 are sewn on the glass fiber silica gel layer; an anti-arc layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106 are sequentially arranged in the explosion-proof cavity from top to bottom; the buffer cavity is filled with a layer of energy absorbing material. The energy absorbing material is rubber.
The insulating layer 101 is a composite layer woven by an arc-resistant layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106.
The expandable graphite bag 103 is filled with mixed particles of expandable graphite particles and modified expandable graphite particles, and the weight ratio of the expandable graphite particles to the modified expandable graphite particles is 1:10.
The preparation method of the modified expandable graphite particles comprises the following steps: placing expandable graphite into a ball mill for crushing, then placing the crushed expandable graphite into a microwave oven, and puffing for 40s under the condition of 100W to obtain a primary product; and adding the initial product and basic zinc carbonate into an ultrasonic stirrer, adding water, stirring, adding calcium carbonate powder, continuously stirring, performing centrifugal separation after stirring, and drying the separated precipitate to obtain the modified expandable graphite particles. Wherein, the weight ratio of basic zinc carbonate to the initial product is 1:20, the addition amount of the calcium carbonate powder is 1/2 of the weight of the basic zinc carbonate.
The bag body of the expandable graphite bag 103 is divided into a plurality of mutually independent bag chambers by sewing lines.
The fastening assembly comprises a plurality of fixing units 200 arranged on the blanket body side by side, each fixing unit 200 comprises a strapping 201 and a magic buckle, one end of the strapping 201 is fixed on one side, close to the buffer cavity, of the surface of the basalt fiber layer 102, and the other end of the strapping 201 extends out of the main body of the fireproof and explosion-proof blanket. The magic buckle comprises a hook surface 203 and an adhesive surface 202, wherein the hook surface 203 is arranged at one end of the strapping 201 fixed on the surface of the basalt fiber layer 102, the adhesive surface 202 is arranged at one end of the strapping 201 extending out of the main body of the fire explosion-proof blanket, and the hook surface 203 is opposite to the adhesive surface 202.
Example 3:
the fire and explosion protection blanket of this embodiment is basically the same as embodiment 1, except that: the mass ratio of expandable graphite particles to modified expandable graphite particles in expandable graphite bag 103 is different, and the preparation method of modified expandable graphite particles is different.
The fire and explosion protection blanket of this embodiment includes a blanket body 100 and a fastening assembly for wrapping the fire and explosion protection blanket at a high voltage cable joint. The fireproof and explosion-proof blanket body comprises an insulating layer 101 and a basalt fiber layer 102, wherein the insulating layer 101 and the insulating layer 101 are respectively the upper surface and the lower surface of the blanket body 100, the side edges of the basalt fiber layer 102 wrap and connect the side edges of the insulating layer 101, an interlayer cavity is formed between the insulating layer 101 and the basalt fiber layer 102, and the interlayer cavity is divided into a fireproof cavity, an explosion-proof cavity and a buffer cavity by sewing lines. The fireproof cavity, the explosion-proof cavity and the buffer cavity are sequentially wrapped at the joint of the high-voltage cable, and the widths of the fireproof cavity, the explosion-proof cavity and the buffer cavity show increasing trend.
The fireproof cavity is filled with a plurality of expandable graphite bags 103, expandable graphite particles are filled in the bag body of each expandable graphite bag 103, and the expandable graphite bags 103 are sewn on the glass fiber silica gel layer; an anti-arc layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106 are sequentially arranged in the explosion-proof cavity from top to bottom; the buffer cavity is filled with a layer of energy absorbing material. The energy absorbing material is rubber.
The insulating layer 101 is a composite layer woven by an arc-resistant layer 104, a hand-tearing stainless steel layer 105 and a Kevlar fiber layer 106.
The expandable graphite bag 103 is filled with mixed particles of expandable graphite particles and modified expandable graphite particles, and the weight ratio of the expandable graphite particles to the modified expandable graphite particles is 1:5.
The preparation method of the modified expandable graphite particles comprises the following steps: placing expandable graphite into a ball mill for crushing, then placing the crushed expandable graphite into a microwave oven, and puffing for 30s under the condition of 100W to obtain a primary product; and adding the initial product and basic zinc carbonate into an ultrasonic stirrer, adding water, stirring, adding calcium carbonate powder, continuously stirring, performing centrifugal separation after stirring, and drying the separated precipitate to obtain the modified expandable graphite particles. Wherein, the weight ratio of basic zinc carbonate to the initial product is 1:15, the addition amount of the calcium carbonate powder is 1/3 of the weight of the basic zinc carbonate.
The bag body of the expandable graphite bag 103 is divided into a plurality of mutually independent bag chambers by sewing lines.
The fastening assembly comprises a plurality of fixing units 200 which are arranged on the fireproof and explosion-proof blanket body side by side, each fixing unit 200 comprises a strapping 201 and a magic buckle, one end of the strapping 201 is fixed on one side, close to the buffer cavity, of the surface of the basalt fiber layer 102, and the other end of the strapping 201 extends out of the main body of the fireproof and explosion-proof blanket. The magic buckle comprises a hook surface 203 and an adhesive surface 202, wherein the hook surface 203 is arranged at one end of the strapping 201 fixed on the surface of the basalt fiber layer 102, the adhesive surface 202 is arranged at one end of the strapping 201 extending out of the main body of the fire explosion-proof blanket, and the hook surface 203 is opposite to the adhesive surface 202.
The fireproof and explosion-proof blankets of embodiments 1-3 are wrapped on the surface of the high-voltage cable connector, and can sequentially form a fireproof functional layer, an explosion-proof functional layer and a buffer functional layer on the periphery of the high-voltage cable connector for protection. The blanket body 100 is wound by the fastening assembly and is fixed by the magic buckle, so that the operation is simple, and the fireproof and explosion-proof blanket can be fixed at the high-voltage cable joint. The expandable graphite can absorb a large amount of heat in the expansion process, and can physically block oxygen to avoid combustion spreading. The anti-explosion cavity is internally provided with the anti-arc layer 104, the hand-tearing stainless steel layer 105 and the Kevlar fiber layer 106 which are sequentially laminated, has higher mechanical strength and better high-temperature resistance, can bear impact force when explosion occurs, and plays a role in excellent explosion prevention. The energy absorbing material filled in the buffer cavity can effectively absorb stress, reduce threat of explosion to the high-voltage cable and operators, and avoid damage to power equipment in the surrounding environment caused by combustion explosion of the high-voltage cable. The fireproof and explosion-proof blanket has excellent fireproof and explosion-proof performance through reasonable arrangement of the functional structure, can be wrapped at the joint of the high-voltage cable to be used as protection, and is simple and convenient to use and operate.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present invention, which facilitate a specific and detailed understanding of the technical solutions of the present invention, but are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. It should be understood that, based on the technical solutions provided by the present invention, those skilled in the art obtain technical solutions through logical analysis, reasoning or limited experiments, all of which are within the scope of protection of the appended claims. The scope of the patent is therefore intended to be covered by the appended claims, and the description and drawings may be interpreted as illustrative of the contents of the claims.
Claims (10)
1. A fireproof and explosion-proof blanket, which is characterized by comprising a blanket main body; the blanket body includes:
the insulating layer is formed by weaving an arc-resistant material, hand-tearing stainless steel and Kevlar fibers;
the basalt fiber layer is connected with the insulating layer and is surrounded to form an interlayer cavity; the interlayer cavity comprises a fireproof cavity, an explosion-proof cavity and a buffer cavity which are sequentially arranged along the extending direction of the blanket main body;
the expandable graphite bag is filled in the fireproof cavity and is divided into a plurality of mutually independent bag chambers by sewing lines;
the explosion-proof structure is filled in the explosion-proof cavity and comprises an arc-resistant layer, a hand-tearing stainless steel layer and a Kevlar fiber layer which are sequentially stacked, wherein the arc-resistant layer is arranged on one side close to the insulating layer, and the Kevlar fiber layer is arranged on one side close to the basalt fiber layer; and
And the energy absorption material layer is filled in the buffer cavity.
2. The fire and explosion blanket of claim 1, wherein the fire chamber, the explosion chamber, and the buffer chamber are spaced apart and independently disposed;
and/or, along the extension direction of the blanket body, the size of the fireproof cavity is smaller than the size of the explosion-proof cavity, and the size of the explosion-proof cavity is smaller than the size of the buffer cavity.
3. The fire and explosion blanket of claim 1, wherein the expandable graphite bag is filled with a mixture of expandable graphite particles and modified expandable graphite particles.
4. A fire and explosion blanket according to claim 3, wherein in the mixture the mass ratio of the expandable graphite particles to the modified expandable graphite particles is 1: (1-10).
5. The fire and explosion blanket of claim 1, wherein the energy absorbing material layer is rubber.
6. Fire and explosion protection blanket according to any one of claims 1 to 5, wherein the blanket body further comprises a glass fiber silicone layer, wherein the expandable graphite bag is sewn to the surface of the glass fiber silicone layer, and wherein the expandable graphite bag is filled in the fire-protection cavity together with the glass fiber silicone layer.
7. A fire and explosion blanket according to any one of claims 1 to 5, further comprising:
and the fastening component is arranged on the outer surface of the blanket main body and is positioned at one side close to the buffer cavity.
8. A fire and explosion protection blanket according to claim 7, wherein the fastening assembly comprises a plurality of securing units disposed side-by-side on the blanket body;
the fixing unit includes:
one end of the strapping tape is fixed on the blanket main body, and the other end of the strapping tape is exposed out of the blanket main body; and
The magic buckle comprises a hook surface and an adhesive surface, wherein the hook surface is arranged at one end of the strapping tape, which is fixed with the blanket main body, the adhesive surface is arranged at the other end of the strapping tape, which is exposed out of the fire explosion-proof blanket main body, and the hook surface and the adhesive surface are respectively positioned on two opposite surfaces of the magic buckle.
9. Use of a fire and explosion protection blanket according to any one of claims 1 to 8 for the preparation of a high voltage cable protection.
10. A cable, characterized by comprising a cable body and the fireproof and explosion-proof blanket according to any one of claims 1 to 8, wherein the fireproof and explosion-proof blanket is wound and wrapped on the cable body; one side of the fireproof and explosion-proof blanket, which is close to the fireproof cavity, is wrapped in, and one side of the fireproof and explosion-proof blanket, which is close to the buffer cavity, is wrapped out.
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| CN202111007013.8A CN113903509B (en) | 2021-08-30 | 2021-08-30 | Cable, fireproof and explosion-proof blanket and application thereof |
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| US7678717B2 (en) * | 2006-05-10 | 2010-03-16 | Precision Fabrics Group, Inc. | Composite upholstery fabric panels with enlarged graphite intumescent particles |
| CN209920689U (en) * | 2019-04-09 | 2020-01-10 | 南京远能电力工程有限公司栖霞分公司 | Fireproof explosion-proof electric arc-resistant protective blanket for cable |
| CN113161975B (en) * | 2021-05-08 | 2022-09-02 | 河南四达电力设备股份有限公司 | Flexible fireproof and explosion-proof blanket for cable intermediate joint |
| CN113072065B (en) * | 2021-05-08 | 2022-11-29 | 河南四达电力设备股份有限公司 | Modified expandable graphite, cable fire-proof and explosion-proof coating film and production method thereof |
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