CN116884687B - High tensile strength's fire-retardant fire-resistant cable - Google Patents
High tensile strength's fire-retardant fire-resistant cable Download PDFInfo
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- CN116884687B CN116884687B CN202310967957.2A CN202310967957A CN116884687B CN 116884687 B CN116884687 B CN 116884687B CN 202310967957 A CN202310967957 A CN 202310967957A CN 116884687 B CN116884687 B CN 116884687B
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Classifications
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- 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
- H01B7/02—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
- H01B7/1805—Protections not provided for in groups H01B7/182 - H01B7/26
-
- 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
- H01B7/182—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments
- H01B7/183—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring comprising synthetic filaments forming part of an outer sheath
-
- 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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
- H01B7/223—Longitudinally placed metal wires or tapes forming part of a high tensile strength core
-
- 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
- H01B7/2806—Protection against damage caused by corrosion
-
- 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
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- 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
-
- 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
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- 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
- H01B7/42—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
- H01B7/421—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation
- H01B7/423—Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction for heat dissipation using a cooling fluid
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- 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
Abstract
The invention relates to the technical field of cables and discloses a high-tensile-strength flame-retardant fire-resistant cable which comprises a cable body, wherein a tensile steel wire, a fixing component, a cable core, a high-tensile filling layer, a cooling cavity, a fire-resistant layer and an outer sheath are sequentially arranged inside the cable body from inside to outside.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a flame-retardant fire-resistant cable with high tensile strength.
Background
With the step jump development of the social and economic activities from depth to breadth, the requirements of people on living standard and living quality are continuously improved, and the cable products are components which are continuously extended in a grading manner according to the size and the height of the system, so that the cable products are generally not maintained and can only be replaced, the long-term safe and reliable operation of the cable products is extremely important, but the protection capability of the cable in the using process at present has some defects.
The utility model provides a tensile strength's power transmission cable, includes sinle silk, tensile core, tensile layer, armor, protective layer, the tensile core is located cable central point put, the sinle silk is around tensile core evenly distributed, the sinle silk includes conductor, insulating layer, shielding layer, the conductor surface is equipped with the insulating layer, the insulating layer surface is equipped with the shielding layer, gap filling has glass fiber between sinle silk and the sinle silk, the tensile layer parcel is all the sinle silk, the tensile layer is inside to be equipped with a plurality of tensile nylons, the tensile layer surface is equipped with the armor, the armor surface is equipped with the protective layer, be equipped with the abrasionproof burr on the protective layer surface.
However, although the above technical scheme solves the problem of certain tensile strength outside the cable itself, the cable core may have low tensile strength due to unstable fixation, and since there is a gap between the tensile core and the cable core, there may be unstable connection between the tensile core and the cable core due to uneven internal filling material, thereby causing poor internal local tensile capacity, so that the overall tensile capacity of the cable body is reduced, and the performance of fire resistance and flame retardance is poor, and under the condition of high temperature or fire, the tensile performance of the cable body is rapidly reduced, so that the cable body cannot maintain stable operation at high temperature or fire, and the use of people is inconvenient.
Therefore, there is a need to solve the above problems by a flame retardant and fire resistant cable with high tensile strength.
Disclosure of Invention
The invention aims to provide a flame-retardant fire-resistant cable with high tensile strength so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a fire-retardant fire-resistant cable of high tensile strength, includes the cable body, the inside central point of cable body puts and is provided with tensile steel wire, the outside evenly is provided with a plurality of fixed subassemblies of tensile steel wire, fixed subassembly inside is fixed with the cable core, the cable core outside all is provided with the insulating layer, fixed subassembly outside is provided with the non-woven fabrics around the band, evenly be provided with aramid yarn rope along the circumferencial direction in the cable body, the cooling chamber has been seted up around the band in the non-woven fabrics, the cooling chamber sets up in the middle of two adjacent fixed subassemblies, the sliding fit has the damping seal dish in the cooling chamber, the lateral wall fixedly connected with second traction wire rope of damping seal dish, the other end of second traction wire rope is fixed on fixed subassembly.
The fixing assembly comprises two fixing center frames, an upper fixing frame and a pin shaft, wherein the center positions of the fixing center frames are fixedly connected with tensile steel wires, the upper side and the lower side of the left side of the upper fixing frame are respectively and movably connected with the left sides of the two fixing center frames through the pin shaft, hollow fixing studs are respectively arranged on the upper side and the lower side of the right side of the upper fixing frame, connecting lugs are arranged on the right sides of the two fixing center frames, fixing nuts are matched and assembled on the fixing studs in a penetrating mode, tension sensors are respectively and fixedly assembled on the tops of the two fixing studs, first traction steel wires are respectively and fixedly installed on the tension sensors, the other ends of the two first traction steel wires penetrate through the upper fixing frame and are symmetrically arranged on the right side of the aramid yarn ropes, the tensile traction steel wires are symmetrically connected to the upper side and the lower side of the left end of the upper fixing frame, and the other ends of the two first traction steel wires are fixedly arranged on the left side of the aramid yarn ropes.
Preferably, the cable core is made of copper-clad aluminum, a high-tensile filling layer is arranged in a central area surrounded by the fixing components and the non-woven fabric wrapping tape, the filling material inside the high-tensile filling layer is a mixture of polyethylene, talcum powder, polypropylene and defoamer, and the second traction steel wire rope penetrates through the high-tensile filling layer and the non-woven fabric wrapping tape to extend into the cooling cavity and the damping sealing disc to be fixedly connected.
Preferably, the non-woven fabrics has set gradually flame retardant coating and oversheath around the band outside, the inside cavity of cooling chamber, the inside coolant liquid that pours into of cooling chamber, evenly be provided with the inside circular recess of several on the cooling chamber surface, the oversheath internal surface is provided with a plurality of and the outside archs of cooling chamber surface concave assorted, every is sunken to correspond a arch, the circular cavity that forms between oversheath and the cooling chamber, aramid yarn rope is filled inside the circular cavity.
Preferably, the fire-resistant layer is wrapped on the outer surface of the cooling cavity, and is composed of a halogen-resistant anti-corrosion layer, a fire-resistant inorganic fiber layer and a water-resistant layer in sequence, wherein the fire-resistant inorganic fiber layer is made of inorganic mineral synthetic mica tapes.
Preferably, a plurality of evenly distributed cooling grooves are formed in the outer jacket, overflow holes are formed in the cooling grooves, one end of each overflow hole penetrates through the refractory layer and is communicated with the cooling cavity, the other end of each overflow hole penetrates through and extends to the outer side of the outer jacket, and sealing pistons are arranged in the overflow holes.
Preferably, one end of the sealing piston is assembled inside the overflow hole in a plugging manner through an elastic piece, the elastic piece adopts a memory alloy spring, one end of the elastic piece is provided with an auxiliary assembly, the other end of the elastic piece is fixedly connected with the end face of the sealing piston, and the auxiliary assembly is fixedly arranged on the outer side wall of the cable body.
Preferably, the auxiliary assembly comprises a positioning block, positioning columns and positioning holes, wherein the positioning block is fixedly connected with the positioning columns which are uniformly arranged, the positioning holes are matched with the positioning columns, the positioning holes are formed in the surface of the outer sheath, and sealing liquid is injected into the positioning holes and the positioning columns for sealing and fixing during installation.
Preferably, the fixing assembly is uniformly arranged along the length direction of the cable body, the cooling cavity is uniformly arranged along the length direction of the non-woven fabric wrapping tape, the cooling cavity is an annular cavity, and the damping sealing disc is sized and adapted to the cooling cavity.
Preferably, the aramid yarn ropes are uniformly arranged into twelve groups of tensile ropes with the same structure along the circumferential direction of the fireproof layer, and the number of the aramid yarn ropes is the same as the number of the bulges.
Preferably, the second traction steel wire ropes are arranged in two groups and symmetrically, guide holes matched with the first traction steel wire ropes are formed in the right side of the upper fixing frame, the guide holes are communicated with the fixing studs, the two groups of first traction steel wire ropes are symmetrically arranged and have an included angle of 120 degrees, the two groups of tensile traction steel wire ropes are symmetrically arranged and have an included angle of 120 degrees, and the first traction steel wire ropes and the tensile traction steel wire ropes are correspondingly arranged.
The invention has the technical effects and advantages that:
1. according to the high-tensile-strength flame-retardant fireproof cable provided by the invention, the stability between the cable core and the tensile steel wire is enhanced by arranging the fixing component between the cable core and the tensile steel wire, the plurality of uniformly distributed fixing components are arranged outside the tensile steel wire, each fixing component comprises the fixing center frame, the upper fixing frame and the pin shaft, carbon fibers are selected as the manufacturing materials of the fixing components, the specific gravity of the fixing components is less than 1/4 of that of steel, the tensile strength of a carbon fiber resin composite material is generally more than 3500mpa and 7-9 times that of steel, the tensile elastic modulus is 23000-43000mpa and higher than that of steel, the weight of the cable body is reduced, the tensile strength is also ensured, the fixing limit is carried out on the cable core by forming the clamping groove by the upper fixing frame and the fixing center frame through the fixing studs on the fixing nut and the fixing center frame, the cable core is completely fixed, the cable core is prevented from being moved due to insufficient filling outside, the cable core and the tensile steel wire are integrally fixed, and the tensile strength of the cable core is improved.
2. The cooling cavity is arranged, the hollow structure in the cooling cavity is formed, a plurality of inward circular depressions are uniformly formed in the outer surface of the cooling cavity, cooling liquid can be injected into the cooling cavity through the sealing end covers at the two ends of the cable body, the material treated by the cooling liquid has no obvious open flame combustion phenomenon, the cooling liquid in the cooling cavity has a certain cooling effect, and the outer sheath can have a certain cooling and flame retarding effect in case of fire.
3. The invention is provided with a fire-resistant layer, the fire-resistant layer is sequentially composed of a halogen-resistant anti-corrosion layer, a fire-resistant inorganic fiber layer and a water-resistant layer, the fire-resistant inorganic fiber layer is made of inorganic mineral synthetic mica tapes, the integral anti-corrosion effect of the fire-resistant layer is enhanced through the halogen-resistant anti-corrosion layer, and the anti-penetration film is arranged on the halogen-resistant anti-corrosion layer, so that the insulation performance and the water-gas-resistant performance of the fire-resistant layer are improved through the anti-penetration film.
4. According to the invention, the cooling groove is arranged, when a fire disaster occurs, the elastic piece inserted and assembled in the overflow hole is heated and contracted, the elastic piece contracts and pulls the sealing piston to be separated from the overflow hole, cooling liquid enters the cooling groove from the cooling cavity along the overflow hole, the outer sheath is cooled and flame-retardant, the outer sheath is not easy to ignite under the action of the cooling liquid, the overall tensile strength of the cable is improved, and the situation that the outer sheath of the cable body is broken and accidental injury is caused to rescue workers is avoided.
5. The inside surface of the outer sheath is provided with a plurality of outward bulges matched with the surface pits of the cooling cavity, each pit corresponds to one bulge, a round cavity is formed between the outer sheath and the cooling cavity, aramid yarn ropes are filled in the cavity, internal stress generated when a cable core is stranded can be effectively removed through 100% back twisting, the aramid yarn ropes are light in weight and have tensile strength which is 5-6 times that of steel wires with the same thickness, the tensile strength of the cable can be improved by taking the aramid yarn ropes as middle fillers, when the cable moves dynamically, the stress can be released internally, the aramid yarn ropes can play a role of buffering the internal stress, and therefore the dynamic torsion times of the cable are improved, and the tensile strength of the outside of the cable body is enhanced
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of a radial cross-sectional structure of the present invention.
FIG. 3 is a schematic view of a fixing assembly according to the present invention.
FIG. 4 is a schematic cross-sectional view of a fastening assembly according to the present invention.
FIG. 5 is a schematic diagram of a cooling tank according to the present invention.
Fig. 6 is an enlarged schematic view of the structure of the portion a in fig. 2 according to the present invention.
Fig. 7 is a schematic view of a radial cross-sectional structure of a refractory layer according to the present invention.
Fig. 8 is a schematic diagram of an end face structure of a cable body according to the present invention.
In the figure: 1. a cable body; 2. tensile steel wire; 3. a fixing assembly; 301. fixing a center frame; 302. an upper fixing frame; 303. a pin shaft; 304. a connecting lug; 305. fixing a stud; 306. a fixing nut; 307. a tension sensor; 308. a first traction wire rope; 309. damping sealing disc; 310. a second traction wire rope; 311. tensile traction wire rope; 4. a cable core; 5. a high tensile filler layer; 6. a cooling chamber; 7. a refractory layer; 701. a halogen-resistant anticorrosive layer; 702. a refractory inorganic fiber layer; 703. a water blocking layer; 8. an aramid yarn rope; 9. an outer sheath; 10. sealing the end cover; 11. a cooling tank; 1101. an overflow aperture; 1102. a sealing piston; 1103. an elastic member; 12. an auxiliary component; 1201. a positioning block; 1202. positioning columns; 1203. and positioning holes.
Description of the embodiments
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like 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 should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; may be directly or indirectly through an intermediate medium, and the specific meaning of the terms in the present invention will be understood by those skilled in the art in specific cases.
Examples
As shown in fig. 1 to 8, this embodiment provides a technical scheme, a fire-retardant fire-resistant cable of high tensile strength, including cable body 1, cable body 1 inside central point puts and is provided with tensile steel wire 2, and tensile steel wire 2 outside evenly is provided with a plurality of fixed subassemblies 3, and fixed subassembly 3 inside is fixed with cable core 4, and cable core 4 outside all is provided with the insulating layer, and fixed subassembly 3 outside is provided with the non-woven fabrics around the band, evenly is provided with aramid yarn rope 8 along the circumferencial direction in the cable body 1, and cooling chamber 6 has been seted up around the band to the non-woven fabrics.
Referring to fig. 3 and 4, the fixing assembly 3 includes two fixing center frames 301, an upper fixing frame 302 and a pin shaft 303, the center position of the fixing center frame 301 is fixedly connected with the tensile steel wires 2, the upper side and the lower side of the left side of the upper fixing frame 302 are respectively movably connected with the left side of the two fixing center frames 301 through the pin shaft 303, the upper side and the lower side of the right side of the upper fixing frame 302 are respectively provided with hollow fixing studs 305, the right side of the two fixing center frames 301 is provided with a connecting lug 304, the fixing studs 305 penetrate through the connecting lugs 304 to be matched with fixing nuts 306, during use, the upper fixing frame 302 and the fixing center frames 301 form clamping grooves, the two cable cores 4 are fixed and limited, the fixing nuts 306 are matched with the fixing studs 305 on the fixing center frames 301 to complete the fixing of the upper fixing frame 302, the situation that when the inner filling of the high tensile filling layer 5 is insufficient is caused, the cable cores 4 are moved and the cable cores 4 and the tensile steel wires 2 are damaged due to uneven local stress in the stretching process is prevented from being fixed into a whole through the fixing assembly 3, and the whole stability and the tensile strength of the cable cores 4 are improved.
The aramid yarn ropes 8 are uniformly arranged into twelve groups of tensile ropes with the same structure along the circumferential direction of the fireproof layer 7, the number of the aramid yarn ropes 8 is the same as the number of the bulges, the tensile strength of the cable body 1 can be synchronously improved through the plurality of groups of the aramid yarn ropes 8, the cable body 1 is prevented from being deformed and torn under larger tensile force, and the tensile protection can be provided for the cable core 4 inside, so that the tensile strength is improved.
It is worth noting that the fixing component 3 is made of carbon fiber, the carbon fiber is microcrystalline graphite material obtained by carbonizing and graphitizing organic fiber, the carbon fiber is a new material with excellent mechanical property, the specific gravity of the material is less than 1/4 of steel, the tensile strength of the carbon fiber resin composite material is generally more than 3500mpa and 7-9 times of that of steel, the tensile elastic modulus is 23000-43000mpa and is also higher than that of steel, so that the specific strength of cfrp, namely the ratio of the strength of the material to the density, can reach 2000 mpa/(g/cm) 3 ) Above, whereas the specific strength of a3 steel is only 59 mpa/(g/cm) 3 ) The higher the specific modulus is than that of steel, the lower the dead weight of the member is, the higher the specific modulus is, the higher the rigidity of the member is, and the overall weight is reduced while the tensile strength of the fixed assembly 3 is ensured.
The cable core 4 is made of copper-clad aluminum, a high-tensile filling layer 5 is arranged in a central area surrounded by each fixing component 3 and a non-woven fabric wrapping tape, the cable core 4 is made of copper-clad aluminum, an insulating layer is arranged outside each cable core 4, the insulating layer is made of thermoplastic elastomer (TPE) materials, the thermoplastic elastomer (TPE) materials of the insulating layer can be made of various materials such as styrene block copolymer, polyester elastomer, EPDM/PP blending elastomer and PVC elastomer, the PVC elastomer is preferred, the thermoplastic elastomer (TPE) materials are used for the insulating layer, the insulating layer has the excellent characteristics of high strength, flexibility, heat resistance, weather resistance, repeated-winding resistance, good rebound resilience and excellent electrical insulation performance, the stability of the overall performance of the cable core 4 is ensured, the tensile property of the cable core 4 is enhanced, the inner filling material of the high-tensile filling layer 5 is a mixture of polyethylene, talcum powder, polypropylene and defoaming agent, the high-tensile filling layer 5 is used for filling and fixing the anti-tensile steel wire 2, the fixing component 3 and the outer gap of the cable core 4, the polyethylene is corrosion-resistant, good in electrical insulation, capable of improving the flexibility and ductility of the cable, high in polypropylene strength, hardness and elastic coefficient, stable in chemical performance, capable of improving the tensile strength of the cable, good in diffusivity and permeability of the defoaming agent, fast in defoaming, good in foam inhibition performance, capable of avoiding the problem of poor local tensile property caused by uneven thickness of a product, and capable of guaranteeing the stability of the tensile environment where the inner cable core 4 is located.
The non-woven fabric wrapping tape is arranged between the high-tensile filling layer 5 and the cooling cavity 6, the cable core 4 is made of neutral materials through the non-woven fabric wrapping tape, the non-woven fabric is light in weight, thin in thickness, high in tensile strength and good in insulating property, and has the advantages that the non-woven fabric wrapping tape is difficult to break, is very suitable for being used in scenes needing tensile and bending resistance, and meanwhile has certain high temperature resistance and combustion resistance.
The non-woven fabrics has set gradually flame retardant coating 7 and oversheath 9 around the band outside, cooling chamber 6 inside cavity, cooling chamber 6 inside injection coolant liquid, because cable body 1 tip integrated into one piece is provided with sealing end cap 10, the liquid injection mouth has been seted up on the sealing end cap 10, annotate the liquid valve in the liquid mouth, can be to cooling chamber 6 inside injection coolant liquid through the sealing end cap 10 at cable body 1 both ends, evenly be provided with the inside circular recess of several on the cooling chamber 6 surface, the inside surface of oversheath 9 is provided with a plurality of and cooling chamber 6 surface concave assorted outside arch, every recess corresponds a arch, the circular cavity that forms between oversheath 9 and the cooling chamber 6, aramid yarn rope 8 fills in the circular cavity inside, can realize cable body 1 anti-torsion effect when using through the cooperation of arch and circular recess.
The aramid yarn rope 8 is light in weight and has 5-6 times of the tensile strength of steel wires with the same thickness, the tensile strength of the cable can be improved by taking the aramid yarn rope 8 as a middle filler, when the cable moves dynamically, the stress can be released internally, and the aramid yarn rope 8 can play a role in buffering the internal stress, so that the dynamic torsion resistance of the cable is improved, and the tensile strength of the outer part of the cable body 1 is enhanced.
The flame retardant coating 7 is wrapped on the outer surface of the cooling cavity 6, the flame retardant coating 7 sequentially comprises a halogen-resistant anti-corrosion layer 701, a flame-resistant inorganic fiber layer 702 and a water-resistant layer 703, the flame-resistant inorganic fiber layer 702 is made of inorganic mineral synthetic mica tapes, the overall anti-corrosion effect of the flame retardant coating 7 is enhanced through the halogen-resistant anti-corrosion layer 701, an anti-permeation film is arranged on the halogen-resistant anti-corrosion layer 701, and the insulation performance and the water-gas-resistant performance of the flame retardant coating 7 are improved through the anti-permeation film.
The outer sheath 9 is provided with an inorganic heat absorption layer, the inorganic heat absorption layer can release vapor when being heated, heat is absorbed in the process of releasing vapor by the inorganic heat absorption material, the heat absorption process can play a role in cooling, and the vapor volatilizes to continuously take away heat, so that the overall tensile strength of the cable body 1 is ensured under the condition of high-temperature fire.
Referring to fig. 5 and 6, a plurality of evenly distributed cooling grooves 11 are arranged in the outer jacket 9, overflow holes 1101 are formed in the cooling grooves 11, one end of each overflow hole 1101 penetrates through the refractory layer 7 and is communicated with the cooling cavity 6, the other end of each overflow hole 1101 penetrates through and extends to the outer side of the outer jacket 9, a sealing piston 1102 is arranged in each overflow hole 1101, one end of each sealing piston 1102 is assembled in the corresponding overflow hole 1101 in a plugging manner through an elastic piece 1103, the elastic piece 1103 adopts a memory alloy spring, one end of each elastic piece 1103 is provided with an auxiliary assembly 12, the other end of each elastic piece 1103 is fixedly connected with the end face of each sealing piston 1102, and the auxiliary assembly 12 is fixedly mounted on the outer side wall of the cable body 1.
When the cooling device is used, cooling liquid in the cooling cavity 6 is blocked under normal conditions, when the working environment output by the cable body 1 is raised, the elastic piece 1103 assembled in the overflow hole 1101 is heated to shrink, the sealing piston 1102 can be pulled to slowly separate from the overflow hole 1101 when the elastic piece 1103 shrinks, when the temperature rises to the shrinkage of the elastic piece 1103, the sealing piston 1102 just withdraws from the overflow hole 1101, at the moment, the cooling liquid enters the cooling groove 11 from the cooling cavity 6 along the overflow hole 1101, the outer jacket 9 is subjected to fluidity cooling, the high temperature resistant effect of the cable body 1 is improved, the outer jacket 9 is not easy to ignite under the action of the cooling liquid, and the cooling liquid amount flowing out of the overflow hole 1101 is larger along with the rise of the temperature, so that the cooling liquid can be promoted to fill the cooling groove 11, the heat exchange efficiency of the cooling liquid and the heat dissipation effect of the outer jacket 9 are improved.
Referring to fig. 6, the auxiliary assembly 12 includes a positioning block 1201, positioning columns 1202 and positioning holes 1203, wherein the positioning block 1201 is fixedly connected with the positioning columns 1202 which are uniformly arranged, the positioning holes 1203 are matched with the positioning columns 1202, the positioning holes 1203 are formed in the surface of the outer jacket 9, sealing liquid is injected into the positioning holes 1203 and the positioning columns 1202 for sealing and fixing when the positioning holes 1203 are installed, the positioning holes 1203 are matched with the positioning columns 1202 for fixing the positioning block 1201 and the outer jacket 9, and the sealing liquid is injected into the positioning holes 1203 and the positioning columns 1202 for sealing and fixing when the positioning holes 1203 and the positioning columns 1202 are installed, so that the limiting and fixing of the structure inside the cooling tank 11 are realized.
It is worth noting that, when the cable body 1 encounters a fire, the temperature outside the outer sheath 9 rises suddenly, and the sealing liquid can be melted under the condition of high temperature, so that the positioning column 1202 loses the effect of fixing in the positioning hole 1203, and the cooling liquid in the cooling tank 11 increases and simultaneously the positioning column 1202 can be pushed out by the pressure of the cooling liquid, so that the cooling liquid can be caused to be spread on the outer side wall of the cable body 1, the cable body 1 is protected, and fire extinguishing treatment at the fire can be realized by the cooling liquid.
Examples
When the first embodiment is used, although the cable body 1 can play a role in improving a certain tensile strength, when the cable is laid at a long distance, the cable body 1 is laid at a long distance, the internal high-tensile filling layer 5 is insufficient in torsion resistance due to the overlong distance, so that the stress degrees of the cable cores 4 at different positions are different, the service lives of the whole cable in the length direction are different, meanwhile, the tensile strength of the cable body 1 is improved by simply utilizing the plurality of groups of aramid yarn ropes 8, the situation of fatigue in use can occur due to long-time use of the aramid yarn ropes 8, the tensile strength of the cable body 1 is greatly reduced, meanwhile, the cable body 1 is laid at a long distance, the position in the cable body 1 in the cable core 4 is not fixed, the cable outer jacket 9 is not damaged due to insufficient torsion resistance in the laying process of the cable body 1, but the cable core 4 is broken, the difficulty in the laying process of the cable body 1 is increased, and meanwhile, the cable maintenance difficulty is increased, and the following improvement is carried out for solving the technical problems:
as shown in fig. 2-4, the fixing components 3 are uniformly arranged along the length direction of the cable body 1, the cooling cavities 6 are uniformly arranged along the length direction of the non-woven fabric wrapping tape, the tops of the two groups of fixing studs 305 are respectively and fixedly provided with a tension sensor 307, the tension sensors 307 are respectively and fixedly provided with first traction steel wire ropes 308, the other ends of the two groups of first traction steel wire ropes 308 penetrate through the upper fixing frame 302 and are fixedly connected to the aramid yarn ropes 8 on the right side, the two groups of first traction steel wire ropes 308 are symmetrically arranged, the upper and lower sides of the left end of the upper fixing frame 302 are symmetrically and fixedly connected with tensile traction steel wire ropes 311, the other ends of the two groups of tensile traction steel wire ropes 311 are symmetrically arranged on the left side aramid yarn ropes 8, the arrangement of the fixing components 3 can greatly increase the deformation resistance of the cable body 1 when being subjected to tensile force, can lengthen the cable body, the other ends of the two groups of tensile traction steel wire ropes 311 are symmetrically arranged on the left side of the aramid yarn rope 8, the cable body is uniformly distributed with the tensile strength of the cable body 1, and the tensile strength of the cable body 1 can be improved when the tensile strength of the cable body is uniformly distributed.
Meanwhile, the cooling cavity 6 is arranged between two adjacent groups of fixed assemblies 3, a damping sealing disc 309 is slidably assembled in the cooling cavity 6, a second traction steel wire rope 310 is fixedly connected to the side wall of the damping sealing disc 309, the other end of the second traction steel wire rope 310 is fixed to the fixed assemblies 3, the cooling cavity 6 is an annular cavity, the damping sealing disc 309 is sized and matched with the cooling cavity 6, the second traction steel wire ropes 310 are arranged in two groups and symmetrically arranged, guide holes matched with the first traction steel wire ropes 308 are formed in the right side of the upper fixing frame 302, the guide holes are communicated with the inside of the fixing studs 305, the two groups of first traction steel wire ropes 308 are symmetrically arranged and have an included angle of 120 degrees, the two groups of tensile traction steel wire ropes 311 are symmetrically arranged and have an included angle of 120 degrees, and the first traction steel wire ropes 308 and the tensile traction steel wire ropes 311 are correspondingly arranged.
When the cable is specifically used, the first traction steel wire rope 308 and the tensile traction steel wire rope 311 are in a tensioning state, and the second traction steel wire rope 310 is in a loosening state, so that the compactness of the structure can be guaranteed, and meanwhile, the cable body 1 can respond at the first time when being twisted or stretched, so that the detection accuracy and the rapidness of the pressed state of the cable body 1 in use are improved, and the cable body is specifically:
when the cable body 1 is simply twisted, the twisting of the cable body 1 inevitably causes the fixing component 3 at the twisting position to rotate along with the fixing component, so that tension is generated on the first traction steel wire rope 308 at the twisting position, and the other group of first traction steel wire ropes 308 are in a loose state slowly due to the rotation of the fixing component 3, so that tension signals cannot be detected by the tension sensor at the first traction steel wire rope 308 without stress, conversely, as external force increases, the rotation trend of the fixing component 3 increases, so that the tension on the first traction steel wire rope 308 at the side with the tension increases, so that the tension borne by the group of tension sensors 307 gradually increases, and when the pressure value detected by the tension sensors 307 does not reach the first threshold value of torsion resistance, the tension traction steel wire rope 311 on the fixing component 3 is also subjected to torsion tension, so that the fixing component 3 and the aramid yarn 8 are synchronously pulled by the tension traction steel wire rope 311, and the primary balance of the torsion force can be realized; with the increase of the torsion force, torsion displacement can occur between the fixing component 3 and the cable body 1, when the torsion force reaches a certain stage, the pressure value detected by the tension sensor 307 reaches a first threshold value, and the second traction steel wire rope 310 is just in a tensioning state, so that the fixing component 3 can pull the damping sealing disc 309 through the second traction steel wire rope 310, however, the damping sealing disc 309 is positioned in the cooling cavity 6 filled with cooling liquid, and therefore when the damping sealing disc 309 extrudes the cooling liquid, secondary balance of the torsion force is realized by utilizing the extrusion force of the damping sealing disc 309 and the cooling liquid, and the torsion resistance between the fixing component 3 and the cable body 1 is greatly improved; when the detected pressure value on the tension sensor 307 reaches the second threshold value, an alarm signal can be sent to the remote terminal, so that a worker can conveniently confirm the position of the cable body 1 where strong torsion occurs and overhaul the cable body 1 in time, and the use protectiveness of the cable body 1 is improved.
Similarly, when the cable body 1 receives a reverse torsion force, the first traction wire rope 308 and the tensile traction wire rope 311 are symmetrically arranged, so that the detection and countermeasures of the torsion force are the same regardless of whether the cable body 1 receives the forward or reverse torsion moment, and reference is made to the above description.
When the cable body 1 is simply stretched, the cable core 4 between two adjacent fixed assemblies 3 is stretched due to the action of traction force of the cable body 1, and the first traction steel wire ropes 308 on the fixed assemblies 3 are synchronously stretched, so that two groups of tension sensors 307 on the fixed assemblies 3 synchronously generate tension signals, and the tension values are the same, which indicates that the cable body 1 is simply stretched, so that the tensile traction steel wire ropes 311 also pull the aramid yarn ropes 8 and the fixed assemblies 3, the tensile effect on the cable body 1 can be achieved, when the pressure value detected on the tension sensors 307 reaches a first threshold value of the tensile property, the second traction steel wire ropes 310 are just in a tensioning state, and the fixed assemblies 3 can pull the damping sealing disc 309 through the second traction steel wire ropes 310, however, the damping sealing disc 309 is in the cooling cavity 6 filled with cooling liquid, and therefore when the damping sealing disc 309 extrudes the cooling liquid, the extrusion force of the damping sealing disc 309 and the cooling liquid is utilized to realize secondary balance of the tensile force, and the tensile property between the fixed assemblies 3 and the cable body 1 is greatly improved; when the detected pressure values on the two groups of tension sensors 307 reach the second threshold value of the tensile property, the tension sensors 307 can send alarm signals to the remote terminal, so that workers can conveniently confirm the position of the cable body 1 where the strong tensile force occurs and overhaul the cable body in time.
It should be noted that, since the pressure in the cooling liquid continuously increases after the extrusion force applied to the cooling liquid on the damping sealing disc 309 exceeds the second threshold value of the tensile property, when the extrusion force applied to the cooling liquid on the damping sealing disc 309 is enough for the elastic member 1103 to shrink and the sealing piston 1102 is drawn out from the overflow hole 1101, the cooling liquid is introduced into the cooling groove 11 through the overflow hole 1101, so that the flow of the cooling liquid can be utilized to cope with the situation that the internal heat is increased after the internal stress occurs when the cable body 1 is stretched, and the protection of the cable body 1 is improved.
It should be noted that the bearable torsion of the cable body 1 when twisting is smaller than the tensile force of the cable body 1 when being stretched, so that the first threshold value detected by the tension sensor 307 is different when the cable body 1 is twisted and stretched, and the second threshold value is different in the same way, so that the external force state of the cable body 1 can be judged according to the single work and the synchronous work of the tension sensor 307, corresponding countermeasures can be made according to actual conditions, and the operator can check and overhaul conveniently.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. A high tensile strength flame retardant fire resistant cable, characterized in that: the novel cable comprises a cable body (1), wherein a tensile steel wire (2) is arranged at the central position inside the cable body (1), a plurality of fixing components (3) are uniformly arranged outside the tensile steel wire (2), a cable core (4) is fixedly arranged inside the fixing components (3), an insulating layer is arranged outside the cable core (4), a non-woven fabric wrapping belt is arranged outside the fixing components (3), an aramid yarn rope (8) is uniformly arranged in the cable body (1) along the circumferential direction, a cooling cavity (6) is formed in the non-woven fabric wrapping belt, the cooling cavity (6) is arranged between two adjacent fixing components (3), a damping sealing disc (309) is arranged in the cooling cavity (6), and a second traction steel wire rope (310) is fixedly connected to the side wall of the damping sealing disc (309), and the other end of the second traction steel wire rope (310) is fixedly arranged on the fixing components (3).
The utility model provides a yarn tension device, including fixed subassembly (3), including two fixed center framves (301), mount (302) and round pin axle (303), fixed center framves (301) central point put and tensile steel wire (2) fixed connection, the upper and lower both sides of mount (302) left side all respectively with two fixed center framves (301) left side are through round pin axle (303) swing joint, the upper and lower both sides of mount (302) right side all are provided with hollow fixed double-screw bolt (305) respectively, two fixed center framves (301) right side are provided with engaging lug (304), fixed double-screw bolt (305) pass engaging lug (304) cooperation and are equipped with fixation nut (306), two sets of the top of fixed double-screw bolt (305) is fixed respectively and is equipped with tension sensor (307), just respectively fixed mounting has first traction steel wire rope (308) on tension sensor (307), two sets of the other end of first traction steel wire rope (308) pass on aramid yarn (8) on upper and lower side of mount (302) fixed connection on right side, and two sets of first traction wire rope (308) are provided with connecting lug (308) symmetry, the left side upper and lower end of tension wire rope (311) is fixed on tension wire (311) tension wire yarn (8).
2. A high tensile strength flame retardant fire resistant cable according to claim 1, wherein: the cable core (4) is made of copper-clad aluminum, a high-tensile filling layer (5) is arranged in a central area surrounded by the fixing components (3) and the non-woven fabric wrapping tape, the filling material inside the high-tensile filling layer (5) is a mixture of polyethylene, talcum powder, polypropylene and defoaming agent, and the second traction steel wire rope (310) penetrates through the high-tensile filling layer (5) and the non-woven fabric wrapping tape and extends into the cooling cavity (6) and the damping sealing disc (309) to be fixedly connected.
3. A high tensile strength flame retardant fire resistant cable according to claim 1, wherein: the non-woven fabric is around band outside has set gradually flame retardant coating (7) and oversheath (9), cooling chamber (6) inside cavity, cooling chamber (6) inside injection coolant liquid, evenly be provided with the inside circular recess of several on cooling chamber (6) surface, oversheath (9) internal surface is provided with a plurality of and cooling chamber (6) surface concave assorted outside arch, every recess corresponds a arch, round cavity that forms between oversheath (9) and cooling chamber (6), aramid yarn rope (8) are filled inside round cavity.
4. A high tensile strength flame retardant fire resistant cable according to claim 3, wherein: the fire-resistant layer (7) is wrapped on the outer surface of the cooling cavity (6), the fire-resistant layer (7) is sequentially composed of a halogen-resistant anti-corrosion layer (701), a fire-resistant inorganic fiber layer (702) and a water-resistant layer (703), and the fire-resistant inorganic fiber layer (702) is made of inorganic mineral synthetic mica tapes.
5. A high tensile strength flame retardant fire resistant cable according to claim 3, wherein: the inner part of the outer sheath (9) is provided with a plurality of evenly distributed cooling grooves (11), the cooling grooves (11) are provided with overflow holes (1101), one end of each overflow hole (1101) penetrates through the refractory layer (7) and is communicated with the cooling cavity (6), the other end of each overflow hole (1101) penetrates through and extends to the outer side of the outer sheath (9), and sealing pistons (1102) are arranged in the overflow holes (1101).
6. The high tensile strength flame retardant and fire resistant cable of claim 5 wherein: one end of the sealing piston (1102) is inserted and assembled in the overflow hole (1101) through an elastic piece (1103), the elastic piece (1103) adopts a memory alloy spring, an auxiliary assembly (12) is arranged at one end of the elastic piece (1103), the other end of the elastic piece (1103) is fixedly connected with the end face of the sealing piston (1102), and the auxiliary assembly (12) is fixedly arranged on the outer side wall of the cable body (1).
7. The high tensile strength flame retardant and fire resistant cable according to claim 6, wherein: the auxiliary assembly (12) comprises a positioning block (1201), positioning columns (1202) and positioning holes (1203), wherein the positioning block (1201) is fixedly connected with the positioning columns (1202) which are uniformly arranged, the positioning holes (1203) are matched with the positioning columns (1202), the positioning holes (1203) are formed in the surface of an outer sheath (9), and sealing liquid is injected into the positioning holes (1203) and the positioning columns (1202) for sealing and fixing during installation.
8. A high tensile strength flame retardant fire resistant cable according to claim 1, wherein: the fixed subassembly (3) is evenly set up along the length direction of cable body (1), just cooling chamber (6) are evenly set up along the length direction of non-woven fabrics around the band, just cooling chamber (6) are the annular chamber, damping sealing disk (309) size and cooling chamber (6) adaptation.
9. A high tensile strength flame retardant fire resistant cable according to claim 3, wherein: the aramid yarn ropes (8) are uniformly arranged into twelve groups of tensile ropes with the same structure along the circumferential direction of the fireproof layer (7), and the number of the aramid yarn ropes (8) is the same as the number of the bulges.
10. A high tensile strength flame retardant fire resistant cable according to claim 1, wherein: the second traction steel wire ropes (310) are arranged in two groups and symmetrically, guide holes matched with the first traction steel wire ropes (308) are formed in the right side of the upper fixing frame (302), the guide holes are communicated with the fixing studs (305), the two groups of the first traction steel wire ropes (308) are symmetrically arranged and have an included angle of 120 degrees, the two groups of the tensile traction steel wire ropes (311) are symmetrically arranged and have an included angle of 120 degrees, and the first traction steel wire ropes (308) and the tensile traction steel wire ropes (311) are correspondingly arranged.
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