CN117116543A - High-flexibility ceramic polyolefin high-flame-retardance fireproof cable - Google Patents
High-flexibility ceramic polyolefin high-flame-retardance fireproof cable Download PDFInfo
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- CN117116543A CN117116543A CN202311159561.1A CN202311159561A CN117116543A CN 117116543 A CN117116543 A CN 117116543A CN 202311159561 A CN202311159561 A CN 202311159561A CN 117116543 A CN117116543 A CN 117116543A
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- 229920000098 polyolefin Polymers 0.000 title claims abstract description 23
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000003063 flame retardant Substances 0.000 claims abstract description 26
- 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 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims description 29
- 238000005192 partition Methods 0.000 claims description 15
- 210000001503 joint Anatomy 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 7
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000004020 conductor Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 14
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 230000000712 assembly Effects 0.000 abstract description 5
- 238000000429 assembly Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 25
- 239000000779 smoke Substances 0.000 description 16
- 238000001179 sorption measurement Methods 0.000 description 15
- 231100000331 toxic Toxicity 0.000 description 15
- 230000002588 toxic effect Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 238000009954 braiding Methods 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 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
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- 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
-
- 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
- H01B7/28—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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Installation Of Indoor Wiring (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a high-flexibility ceramic polyolefin high-flame-retardance fireproof cable, which particularly relates to the technical field of cables, and comprises a cable main body, wherein the cable main body consists of an outer sheath, an inner sheath and a core wire arranged in the inner sheath, the cable main body is provided with a plurality of sections, a sleeve ring which is arranged in a hollow mode is arranged between the inner sheath and the outer sheath of each section of the cable main body, a cutting mechanism is arranged between two adjacent sections of the cable main body, the two adjacent sections of the cable main body are detachably connected through the cutting mechanism, elastic end head assemblies are arranged at the opposite ends of the core wires of the two adjacent sections of the cable main body, a plurality of groups of heat conduction gas generating mechanisms are arranged on the outer side of the inner sheath, and a pneumatic pressure regulating valve which is communicated with a hollow cavity of the sleeve ring is arranged on the inner side of the sleeve ring of each section of the cable main body. The invention realizes double flame-retardant protection on the cable main body of the abnormal section by utilizing the matching use of the cutting mechanism and the heat conduction gas generating mechanism, has good flame-retardant effect and can not cause associated combustion.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-flexibility ceramic polyolefin high-flame-retardance fireproof cable.
Background
The flame-retardant power cable is used for transmitting and distributing electric energy and is commonly used for urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises and underwater power transmission lines crossing rivers and seas. In the electric power line, the proportion of the cable is gradually increasing, the electric power cable is a cable product used for transmitting and distributing high-power electric energy in a main line of the electric power system, and the flame-retardant cable refers to a cable which is burnt under the specified test condition, and after the test fire source is removed, flame spread is only in a limited range, and after flame or after flame can be automatically extinguished within a limited time. Flame-retardant power cables can be classified into oil-impregnated paper-insulated power cables, plastic-insulated power cables, and rubber-insulated power cables according to insulating materials. The voltage class can be divided into medium-voltage and low-voltage power cables (35 kv and below), high-voltage power cables (110 kv and above), ultra-high-voltage power cables (275-800 kv) and ultra-high-voltage power cables (1000 kv and above). In addition, it is also possible to divide the current system into ac and dc cables.
The Chinese patent No. 202210942196.0 discloses a high-efficiency energy-saving medium-voltage fireproof cable, which comprises a cable core and an outer cladding, wherein the cable core comprises a wire core and a cooling oil pipe with a braiding layer, the wire core and the cooling oil pipe with the braiding layer are stranded together in a cable mode, and the side gaps of the wire core are filled and rounded by alkali-free glass fiber ropes to form the cable core; the cooling oil pipe with the braiding layer comprises a hollow oil pipe, and the outside of the hollow oil pipe is braided by bare copper wires to form a braiding shielding layer. When the cable is used, the hollow oil pipe circulates cooling oil to take away heat, so that the heat dissipation effect is achieved. The outside of the hollow oil pipe is braided and shielded by bare copper wires, so that the flexibility of the cooling oil pipe with the braided layer can be kept, and the cable processing and bending are facilitated. Because the braided shielding layer is in contact with the copper strip shielding layer, the heat generated by heating of the cable is fully transferred to the cooling pipe by utilizing the good heat conduction effect of the copper strip and the copper wire, so that the heat dissipation effect of the cooling oil pipe is greatly improved. However, when the cable has the phenomenon of larger voltage and current load in the use process, the internal temperature of the cable can be quickly increased to cause fire, the associated combustion is easy to cause, the flame retardant effect is poor, the combustion flame is easy to spread outwards, the combustion range is difficult to control, toxic smoke can be generated in the combustion process, the toxic smoke cannot be effectively treated, and the damage to the environment and human body is caused.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides the high-flexibility ceramic polyolefin high-flame-retardance fireproof cable, wherein the cable main body of an abnormal section is formed into double flame retardance protection by utilizing the matched use of the cutting mechanism and the heat conduction gas generating mechanism, the associated combustion is avoided, toxic smoke is treated by utilizing the matched use of the absorbing piece and the drainage piece, the damage of the burning smoke to the environment and the human body is reduced, the burning flame is isolated from the outside by utilizing the outer sheath, and the burning range is controlled.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high fire-retardant fireproof cable of high flexible pottery polyolefin, includes the cable main part, the cable main part comprises oversheath, inner sheath and the heart yearn that sets up in the inner sheath is inside, and the cable main part is provided with the multistage, every section all be provided with the lantern ring between the inner sheath of cable main part and the oversheath, the lantern ring is the cavity setting, adjacent two sections be provided with between the cable main part and intercept the mechanism, the cable main part can dismantle and connect through the mechanism that intercepts, the heart yearn both ends all are provided with elasticity end subassembly, the inner sheath outside is provided with multiunit heat conduction gas production mechanism, pneumatic pressure control valve is installed to the lantern ring inboard, pneumatic pressure control valve switches on with the cavity of lantern ring mutually, the oversheath is equipped with the drainage piece near the link of intercepting the mechanism, the outer wall of oversheath is run through in a slip of drainage piece one end, and get into the inside of oversheath.
In a preferred embodiment, the heat conduction gas generating mechanism comprises a heat conduction ring, the heat conduction ring is fixedly embedded on the inner sheath, a plurality of heat conduction rods are fixedly connected to the outer wall of the heat conduction ring, the heat conduction rods are distributed evenly in a ring shape on the outer wall of the heat conduction ring, one ends of the heat conduction rods, far away from the heat conduction ring, penetrate through the inner side of the lantern ring and extend to the inner side of the hollow cavity of the lantern ring, heat conduction balls are fixedly arranged at one ends of the heat conduction rods, extending to the inner side of the hollow cavity of the lantern ring, the heat conduction balls are arranged in a hollow mode, carbamate is filled in the hollow cavity of the heat conduction balls, the heat conduction balls consist of an upper hemisphere and a lower hemisphere, a sphere is formed between the upper hemisphere and the lower hemisphere in a threaded mode, a plurality of air outlets are formed in the outer wall of the upper hemisphere, the air outlets are distributed in a net shape on the outer wall of the upper hemisphere, the air outlets are communicated with the inner side of the hollow cavity of the heat conduction balls, inert protective gas is filled in the hollow cavity of the lantern ring, and the heat conduction rings and the heat conduction rods are made of insulating heat conduction materials.
In a preferred embodiment, the cutting mechanism comprises an annular protective cylinder, the annular protective cylinder is arranged between two adjacent sections of cable main bodies, annular grooves are formed in the outer walls of the outer jackets of the cable main bodies, positioning rings are sleeved outside the annular grooves, mounting rings are fixedly arranged on two sides of the annular protective cylinder, the mounting rings are sleeved on the outer walls of the positioning rings, the mounting rings and the positioning rings are fixed outside the outer jackets of the two adjacent sections of cable main bodies through locking bolts, an adsorption piece is arranged inside the outer walls of the annular protective cylinder, activated carbon is filled inside the adsorption piece, a plurality of adsorption holes are formed in the outer walls of the annular protective cylinder, a plurality of adsorption holes are formed in the inner walls of the annular protective cylinder, and the adsorption holes and the adsorption piece are communicated.
In a preferred embodiment, the central position inside the annular casing is provided with a partition plate, the middle parts of the opposite ends of the two partition plates are respectively provided with a column groove, the opposite ends of the two partition plates are respectively fixedly provided with a mounting plate at the position corresponding to the column groove, and a first spring is fixedly connected between the mounting plates and the inner wall of the annular casing at the corresponding position.
In a preferred embodiment, the annular protective cylinder is inside to be provided with the air duct in the position department of two post grooves, the air duct is m shape design, the standpipe activity is pegged graft in the post groove inside of corresponding position in the middle of the air duct, air duct both sides standpipe is the movable oversheath in proper order and the lantern ring outside to be linked together with the inside cavity of lantern ring, air duct both sides standpipe is the check valve structure setting, the junction of air duct both sides standpipe and lantern ring is provided with the sealing washer, be equipped with the baffle ring on the outer wall of air duct 55 both sides standpipe insertion end, the baffle ring can restrict air duct 55 both sides standpipe male degree of depth, the fixed cover in middle standpipe outer wall tip of air duct is equipped with the piston ring, the fixed cover in open end border position of post groove inner wall is equipped with the restriction ring.
In a preferred embodiment, two sides of opposite ends of the two partition boards are fixedly provided with limiting arc blocks, two ends of the two partition boards are provided with caulking grooves, two adjacent opposite ends of the outer sheath are provided with two protruding blocks, the sum of the lengths of the two protruding blocks in opposite states extending horizontally is equal to the thickness of the partition boards, and the sum of the widths of the two caulking grooves in opposite states is equal to the width of the protruding blocks.
In a preferred embodiment, the elastic end head assembly comprises a cylindrical sinking groove, the cylindrical sinking groove is formed in the end portion of the core wire, a butt joint end head is movably sleeved in the cylindrical sinking groove, a second spring is fixedly connected between one end of the butt joint end head and the end face of the inner cavity of the cylindrical sinking groove, and the edge of the outer wall of the other end of the butt joint end head is in a rounded corner arrangement.
In a preferred embodiment, the surface of the ring groove is provided with a plurality of positioning guide grooves, the position of the inner wall of the positioning ring corresponding to the positioning guide grooves is fixedly provided with a guide block, and the guide block is in sliding connection with the inside of the positioning guide groove at the corresponding position.
In a preferred embodiment, the outer sheath material adopts high flexible ceramic polyolefin, the drainage piece is including the exhaust post, exhaust post one end fixedly connected with first stopper, first stopper is equipped with the exhaust hole, the exhaust post other end slip runs through the outer sheath outer wall, and fixedly connected with second stopper, the exhaust post outer wall is equipped with the inlet port, inlet port and exhaust hole intercommunication, be connected with the third spring between first stopper and the outer sheath.
The invention has the technical effects and advantages that:
1. according to the invention, the cutoff mechanism and the heat-conducting gas generating mechanism are arranged, so that the condition of larger voltage and current load can occur in the use process of the cable main body, the high temperature rising on the surface of the core wire can be conducted to the inside of the sleeve ring through the heat-conducting gas generating mechanism, the carbamate in the inside of the sleeve ring is heated and decomposed to generate gas, the generated gas and the originally-filled inert protective gas conducted to the inside of the sleeve ring are utilized to increase the pressure in the inside of the sleeve ring, when the first pressure is reached, the gas in the inside of the sleeve ring is pressed into the gas guide pipe, the cutoff mechanism is driven to completely separate the cable main body of the abnormal section from the cable main body of the adjacent normal section, a heavy flame-retardant protection is formed, and when the second pressure value is reached, the gas pressure in the inside of the sleeve ring pushes up the pneumatic pressure regulating valve, so that the inert protective gas in the inside of the sleeve ring is filled into the cavity between the sleeve ring and the inner sheath, and a double flame-retardant protection is formed, and thus the flame retardant effect of the cable is greatly improved.
2. According to the invention, the two sections of adjacent cable bodies are butted by utilizing the cutting mechanism, and the two sections of cable bodies are formed into a passage by utilizing the opposite elastic end head assemblies, so that the cable bodies in the local section can be replaced conveniently, quickly and conveniently in the later period.
3. According to the invention, the adsorption piece and the drainage piece are arranged, the mounting plate is pressed down in the cable combustion process, the first limiting block can be pressed down, toxic smoke generated by combustion in the outer sheath enters the annular protective cylinder through the air inlet hole and the air outlet hole, the toxic smoke entering the annular protective cylinder sequentially passes through the adsorption hole, the adsorption piece and the adsorption hole are discharged outwards, and toxic molecules in the toxic smoke are adsorbed under the action of activated carbon after the toxic smoke enters the adsorption piece, so that the toxic smoke is treated, and the damage of the smoke to the environment and human body is effectively reduced.
4. The high-flexibility ceramic polyolefin is adopted as the outer sheath material, so that the hardness, the wear resistance and the corrosion resistance of the cable are enhanced under normal conditions, the service life of the cable is prolonged, the applicability of the cable to the environment is improved, and under the condition of cable combustion, the outer sheath forms a compact and hard ceramic shell under the high-temperature effect, so that the flame and the heat in the outer sheath can be isolated, the influence of the flame in the outer sheath on the outside is prevented, and the further loss is avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the technical aspects of the invention, and are incorporated in and constitute a part of this specification, and are included to illustrate and explain the invention.
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is an enlarged view of portion a of fig. 1 in accordance with the present invention.
Fig. 3 is an enlarged view of portion B of fig. 1 in accordance with the present invention.
Fig. 4 is a cross-sectional view of a divider plate of the present invention.
FIG. 5 is a schematic view of the structure of the elastic head assembly of the present invention.
Fig. 6 is a schematic diagram of a partial structure of a heat-conducting gas generating mechanism according to the present invention.
Fig. 7 is a schematic view of the butt end structure of the outer sheath according to the present invention.
Fig. 8 is an enlarged view of portion C of fig. 1 in accordance with the present invention.
Fig. 9 is a schematic structural view of the drainage member of the present invention.
Fig. 10 is a structural cross-sectional view of the drainage member of the present invention.
The reference numerals are: the novel air conditioner comprises a 1 outer sheath, a 2 inner sheath, a 3 core wire, a 4-collar, a 5 cutting mechanism, a 51 annular protective cylinder, a 52 partition plate, a 53 mounting plate, a 54 first spring, a 55 air duct, a 56 column groove, a 57 piston ring, a 58 limiting ring, a 59 limiting arc block, a 510 caulking groove, a 511 bump, a 512 positioning ring, a 513 mounting ring, a 514 ring groove, a 515 absorbing part, a 6 elastic end head assembly, a 61 cylindrical sinking groove, a 62 butt joint end, a 63 second spring, a 7 heat conduction and air generating mechanism, a 71 heat conduction ring, a 72 heat conduction rod, a 73 heat conduction ball, an 8 pneumatic pressure regulating valve, a 9 positioning guide groove, a 10 guide block, an 11 drainage part, a 111 air exhaust column, a 112 first limiting block, a 113 second limiting block, 114 air inlets, 115 air exhaust holes and 116 third springs.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more example embodiments. In the following description, numerous specific details are provided to give a thorough understanding of example embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the aspects of the disclosure may be practiced without one or more of the specific details, or with other methods, components, steps, etc., and in other instances, well-known structures, methods, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
First embodiment
Referring to fig. 1-4 and fig. 7 of the specification, in an embodiment of the invention, a cable main body consists of an outer sheath 1, an inner sheath 2 and a core wire 3 arranged in the inner sheath 2, the cable main body is provided with a plurality of sections, a sleeve ring 4 is arranged between the inner sheath 2 and the outer sheath 1 of each section of cable main body, the sleeve ring 4 is arranged in a hollow manner, a cutting mechanism 5 is arranged between two adjacent sections of cable main bodies, the cable main bodies can be detached and connected through the cutting mechanism 5, two ends of the core wire 3 are provided with elastic end head assemblies 6, a plurality of groups of heat conduction gas generating mechanisms 7 are arranged outside the inner sheath 2, a pneumatic pressure regulating valve 8 is arranged inside the sleeve ring 4, and the pneumatic pressure regulating valve 8 is communicated with a hollow cavity of the sleeve ring 4;
the cutting mechanism 5 comprises an annular protective cylinder 51, the annular protective cylinder 51 is arranged between two adjacent sections of cable main bodies, an annular groove 514 is formed in the outer wall of the outer sheath 1 of the two adjacent sections of cable main bodies, a positioning ring 512 is sleeved outside the annular groove 514, mounting rings 513 are fixedly arranged on two sides of the annular protective cylinder 51, the mounting rings 513 are sleeved on the outer wall of the positioning ring 512, and the mounting rings 513 and the positioning rings 512 are fixed outside the outer sheath 1 of the two adjacent sections of cable through locking bolts.
The inside central point of annular protective tube 51 puts and is provided with division board 52, the column groove 56 has all been seted up at the middle part of two division board 52 opposite ends, two division board 52 opposite ends are all fixed in the position department that corresponds column groove 56 and are equipped with mounting panel (53), fixedly connected with first spring 54 between mounting panel 53 and the annular protective tube 51 inner wall of corresponding position, annular protective tube 51 inside all is provided with air duct 55 in the position department of two column grooves 56, air duct 55 is the design of m shape, the middle standpipe activity grafting of air duct 55 is in the column groove 56 inside of corresponding position, air duct 55 both sides standpipe is movable in proper order runs through outer sheath 1 and the lantern ring 4 outside, and be linked together with the inside cavity of lantern ring 4, air duct 55 both sides standpipe is the check valve structure setting, the junction of air duct 55 both sides standpipe and lantern ring 4 is provided with the sealing washer, be equipped with the baffle ring on the outer wall of air duct 55 both sides standpipe insertion end, baffle ring can restrict the degree of depth of air duct 55 both sides intubate, the middle standpipe outer wall end fixed cover of air duct 55 is equipped with piston ring 57, the open end edge position fixed cover of column groove 56 inner wall is equipped with restriction ring 58.
It should be noted that, in the process of using this fire-retardant cable, firstly, butt joint installation is carried out two sections adjacent cable main bodies through cutting mechanism 5, make two sections cable main bodies pass through the elastic end head subassembly 6 butt joint of heart yearn 3 tip and switch on, in case the cable main body is when the great circumstances of voltage and electric current load appear in the in-process of using, heart yearn 3 surface intensifies, make heat conduction produce gas mechanism 7 together intensify, heat conduction produce gas mechanism 7 release a large amount of gas under the high temperature, make the inside atmospheric pressure of lantern ring 4 increase, when the inside atmospheric pressure of lantern ring 4 reaches first pressure value, lantern ring 4 inside gaseous entering air duct 55, make the inside atmospheric pressure of post groove 56 strengthen, thereby drive cutting mechanism 5 removes, accomplish the cutting to the cable main body of unusual section, avoid causing the conjoint burning, realize one again fire-retardant.
Second embodiment
Referring to fig. 1-3 and fig. 6 of the accompanying drawings in the specification, a high-flexibility ceramic polyolefin high-flame-retardant fireproof cable according to an embodiment of the invention, the heat conduction gas generating mechanism 7 comprises a heat conduction ring 71, the heat conduction ring 71 is fixedly embedded on an inner sheath 2, a plurality of heat conduction rods 72 are fixedly connected to the outer wall of the heat conduction ring 71, the heat conduction rods 72 are uniformly distributed in a ring shape on the outer wall of the heat conduction ring 7), one end of each heat conduction rod 72 far away from the heat conduction ring 71 penetrates through the inner side of a lantern ring 4 and extends into a hollow cavity of the lantern ring 4, one end of each heat conduction rod 72 extending into the hollow cavity of the lantern ring 4 is fixedly provided with a heat conduction ball 73, the heat conduction ball 73 is arranged in a hollow mode, the hollow cavity of the heat conduction ball 73 is filled with carbamate, the heat conduction ball 73 consists of an upper hemisphere and a lower hemisphere, a sphere is formed by threaded connection between the upper hemisphere and the lower hemisphere, a plurality of air outlets are distributed in a net shape on the outer wall of the upper hemisphere, the air outlets are communicated with the hollow cavity of the lantern ring 73, inert protective gas is filled in the hollow cavity of the lantern ring 4, and the heat conduction rods 72 are made of insulating heat conduction materials;
when the surface temperature of the core wire 3 is rapidly increased due to the larger voltage and current load during the use of the flame-retardant cable, the heat conducting ring 71 will conduct heat to the heat conducting rod 72, and the heat conducting rod 72 will conduct heat to the heat conducting ball 73 inside the sleeve ring 4, then the carbamate inside the heat conducting ball 73 is heated by this heat to decompose and generate gas, then the generated gas and the inert protective gas originally filled inside the sleeve ring 4 are used to increase the pressure inside the sleeve ring 4, when the air pressure inside the sleeve ring 4 reaches the second pressure value, the air pressure pushes the pneumatic pressure regulating valve 8, so that the protective gas inside the sleeve ring 4 fills into the cavity between the sleeve ring 4 and the inner sheath 2 to form dual flame-retardant protection, and the pneumatic pressure regulating valve 8 is started to be opened after the two partition plates 52 are completely separated, and the second pressure value is larger than the first pressure value.
Specifically, during the decomposition of the carbamate by heat, the reaction formula is as follows:
in this reaction scheme, the carbamate decomposes into three gases, CO2, N2 and H2O, thereby allowing the pressure inside the collar 4 to build up.
Third embodiment
Referring to fig. 4 and 7 of the present disclosure, in an embodiment of the present disclosure, limiting arc blocks 59 are fixedly disposed on two sides of opposite ends of two partition boards 52, caulking grooves 510 are formed on two ends of two partition boards 52, two protruding blocks 511 are disposed on opposite ends of two adjacent outer jackets 1, a sum of lengths of two protruding blocks 511 extending horizontally in opposite states is equal to a thickness of the partition board 52, and a sum of widths of two caulking grooves 510 in opposite states is equal to a width of the protruding blocks 511.
The surface of the ring groove 514 is provided with a plurality of positioning guide grooves 9, the position of the inner wall of the positioning ring 512 corresponding to the positioning guide grooves 9 is fixedly provided with a guide block 10, and the guide block 10 is in sliding connection with the inside of the positioning guide groove 9 at the corresponding position.
It should be noted that, in the process of butting two adjacent cable bodies by using the cutoff mechanism 5, the positioning ring 512 is pre-installed to the inner side of the installation ring 513, and meanwhile, the positions of the piston rings 57 in the column grooves 56 on the position separation plate 52 are adjusted, so that the tail ends of the vertical pipes at two ends of the air duct 55 are separated from the outer wall of the outer sheath 1, then the opposite ends of the two adjacent cable bodies to be butted are gradually close to each other, the guide blocks 10 on the inner wall of the positioning ring 512 are aligned with the positioning guide grooves 9 corresponding to the surfaces of the annular grooves 514 on the outer sheath 1, after the two adjacent cable bodies move to the maximum, the elastic end head assemblies 6 at the butt ends of the two cable bodies form a passage in a close fit state, then the pre-fixed positioning ring 512 and the installation ring 513 are installed on the outer sheath 1 through locking bolts, so that the butt joint between the two adjacent cable bodies is completed, and the cable bodies are replaced quickly and conveniently.
Fourth embodiment
Referring to fig. 1 and 5 of the accompanying drawings, in an embodiment of the present invention, the elastic end assembly 6 includes a cylindrical sinking groove 61 formed at the end of the core wire 3, a butt joint end 62 is movably sleeved in the cylindrical sinking groove 61, a second spring 63 is fixedly connected between one end of the butt joint end 62 extending into the cylindrical sinking groove 61 and the end face of the inner cavity of the cylindrical sinking groove 61, and the edge of the outer wall of one end of the butt joint end 62 located outside the cylindrical sinking groove 61 is rounded, so that the two butt joint ends 62 in a bonding state are conveniently propped open in the process of approaching the partition plate 52 to form an open circuit.
When the second spring 68 is in a natural state, the butt-joint ends 62 are always inserted into the cylindrical sinking groove 61, and after the elastic end assemblies 6 at opposite ends of the two cable bodies are in butt-joint, the two butt-joint ends 62 are in a fitting state, at this time, the second spring 6 at the corresponding position is in a compressed state, and the end faces of the opposite ends of the two butt-joint ends 62 are in tight fitting arrangement, so that a passage is formed.
Fifth embodiment
Referring to fig. 1, 8, 9 and 10 of the specification, in an embodiment of the present invention, an absorbing member 515 is disposed inside an outer wall of an annular protective cylinder 51, activated carbon is filled inside the absorbing member 515, a plurality of absorbing holes are disposed on an outer wall of the annular protective cylinder 51, a plurality of absorbing holes are disposed on an inner wall of the annular protective cylinder 51, the absorbing holes and the absorbing holes are all communicated with the inside of the absorbing member 515, a drainage member 11 is disposed at a connection end close to a cutting mechanism 5 of an outer sheath 1, one end of the drainage member 11 slides through an outer wall of the drainage member 11 and enters the inside of the outer sheath 1, the drainage member 11 includes an exhaust column 111, one end of the exhaust column 111 is fixedly connected with a first limiting block 112, the first limiting block 112 is provided with an exhaust hole 115, the other end of the exhaust column 111 slides through the outer wall of the outer sheath 1, and is fixedly connected with a second limiting block 113, an air inlet hole 114 is disposed on the outer wall of the exhaust column 111, the air inlet hole 114 is communicated with the exhaust hole 115, and a third spring 116 is connected between the first limiting block 112 and the outer sheath 1.
It should be noted that, under normal conditions, the air inlet 114 is located inside the outer wall of the outer sheath 1, in the cable combustion process, the mounting plate 53 is pressed down, so that the air inlet 114 enters inside the outer sheath 1, at this time, toxic smoke generated by combustion inside the outer sheath 1 enters the annular protective cylinder 51 through the air inlet 114 and the air outlet 115, the toxic smoke entering the annular protective cylinder sequentially passes through the adsorption holes, the adsorption piece 515 and the adsorption holes are externally removed, and toxic molecules in the toxic smoke are adsorbed under the action of activated carbon after the toxic smoke enters the adsorption piece 515, so that the toxic smoke is treated, and the damage of the smoke to the environment and the human body is effectively reduced.
Sixth embodiment
Referring to fig. 1 of the specification, the high-flexibility ceramic polyolefin high-flame-retardant fireproof cable provided by the embodiment of the invention has the advantages that the high-flexibility ceramic polyolefin is adopted as the material of the outer sheath 1, and under normal conditions, the outer sheath 1 of the high-flexibility ceramic polyolefin is adopted to ensure that the cable is more durable and wear-resistant, so that the cable is not easy to scratch or damage in the using process, the service life of the cable is prolonged, the wear resistance of the cable is increased, the external friction and wear resistance can be better resisted, the maintenance and replacement frequency of the cable can be reduced, the corrosion resistance of the cable can be enhanced, the cable can be more stable in corrosive media such as acid, alkali and the like, the application value of the cable to the environment is improved in some special environments such as chemical industry or ocean engineering, under the high-temperature effect of the cable, a compact and hard ceramic shell can be formed by the outer sheath 1, the flame and heat inside the outer sheath 1 can be isolated, the combustion range can be controlled, the flame resistance of the cable can be further enhanced, and the loss can be reduced.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The utility model provides a high fire-retardant fireproof cable of high flexible ceramic polyolefin, includes cable main part, its characterized in that: the cable main part comprises oversheath (1), inner sheath (2) and core wire (3) that set up in inner sheath (2) inside, and the cable main part is provided with the multistage, every section all be provided with lantern ring (4) between inner sheath (2) and oversheath (1) of cable main part, lantern ring (4) are the cavity setting, and adjacent two sections be provided with between the cable main part and intercept mechanism (5), the cable main part can dismantle and connect through intercepting mechanism (5), core wire (3) both ends all are provided with elastic end head assembly (6), inner sheath (2) outside is provided with multiunit heat conduction gas production mechanism (7), pneumatic pressure control valve (8) are installed to lantern ring (4) inboard, pneumatic pressure control valve (8) are switched on with the cavity of lantern ring (4), oversheath (1) are being close to the link of intercepting mechanism (5) is equipped with drainage piece (11), drainage piece (11) one end slip runs through oversheath (1) and extends to the inside of oversheath (1).
2. The high flexibility ceramic polyolefin high flame retardant fire resistant cable of claim 1, wherein: the heat conduction gas production mechanism (7) comprises a heat conduction ring (71), the heat conduction ring (71) is fixedly embedded on an inner sheath (2), a plurality of heat conduction rods (72) are fixedly connected to the outer wall of the heat conduction ring (71), the heat conduction rods (72) are uniformly distributed in a ring shape on the outer wall of the heat conduction ring (71), one ends of the heat conduction rods (72) far away from the heat conduction ring (71) penetrate through the inner side of the lantern ring (4) and extend to the inner side of a hollow cavity of the lantern ring (4), heat conduction balls (73) are fixedly arranged at one ends of the heat conduction rods (72) extending to the inner side of the hollow cavity of the lantern ring (4), the heat conduction balls (73) are arranged in a hollow mode, each heat conduction ball (73) consists of an upper hemisphere and a lower hemisphere, a ball body is formed between the upper hemisphere and the lower hemisphere in a threaded mode, and the outer wall of the upper hemisphere is provided with a plurality of gas outlets.
3. The high flexibility ceramic polyolefin high flame retardant fire resistant cable of claim 1, wherein: the utility model provides a cut-off mechanism (5) is including annular protection barrel (51), annular protection barrel (51) set up between two adjacent sections cable main part, two adjacent sections be equipped with annular (514) on the oversheath (1) outer wall of cable main part, annular (514) outside cover is equipped with holding ring (512), annular protection barrel (51) both sides are all fixed and are equipped with collar (513), holding ring (513) cover is located holding ring (512) outer wall, holding ring (513) and holding ring (512) are fixed respectively in the outside of two adjacent cable oversheaths (1), annular protection barrel (51) outer wall inside is equipped with adsorbing piece (515), adsorbing piece (515) inside is filled with the active carbon, annular protection barrel (51) are interior, the outer wall all is equipped with a plurality of absorption holes.
4. A highly flexible ceramified polyolefin high flame retardant fire resistant cable according to claim 3, wherein: the annular pile casing (51) is characterized in that a partition plate (52) is arranged at the inner center of the annular pile casing (51), column grooves (56) are formed in the middle of opposite ends of the partition plates (52), mounting plates (53) are fixedly arranged at positions corresponding to the column grooves (56) at opposite ends of the partition plates (52), and first springs (54) are fixedly connected between the mounting plates (53) and the inner walls of the annular pile casings (51) at corresponding positions.
5. The high flexibility ceramic polyolefin high flame retardant fireproof cable according to claim 4, wherein: the annular protective cylinder is characterized in that the air duct (55) is arranged at the positions of the two column grooves (56) in the annular protective cylinder (51), the air duct (55) is arranged in an m-shaped mode, the middle vertical pipes of the air duct (55) are movably inserted into the column grooves (56) at corresponding positions, the vertical pipes at the two sides of the air duct (55) sequentially penetrate through the outer sheath (1) and the lantern ring (4) in a movable mode and are communicated with the hollow cavity inside the lantern ring (4), the vertical pipes at the two sides of the air duct (55) are arranged in a one-way valve structure, sealing rings are arranged at the connecting positions of the vertical pipes at the two sides of the air duct (55) and the lantern ring (4), blocking rings are arranged on the outer walls of insertion ends of the vertical pipes at the two sides of the air duct (55), piston rings (57) are fixedly sleeved at the end parts of the outer walls of the middle vertical pipes of the air duct (55), and limiting rings (58) are fixedly sleeved at the edge positions of the opening ends of the inner walls of the column grooves (56).
6. The high flexibility ceramic polyolefin high flame retardant fireproof cable according to claim 4, wherein: limiting arc blocks (59) are fixedly arranged on two sides of opposite ends of the two separation plates (52), caulking grooves (510) are formed in two ends of the two separation plates (52), and two protruding blocks (511) are arranged at opposite ends of two adjacent outer jackets (1).
7. The high flexibility ceramic polyolefin high flame retardant fire resistant cable of claim 1, wherein: the elastic end head assembly (6) comprises a cylindrical sinking groove (61), the cylindrical sinking groove (61) is formed in the end portion of the core wire (3), a butt joint end head (62) is movably sleeved in the cylindrical sinking groove (61), and a second spring (63) is fixedly connected between one end of the butt joint end head (62) and the end face of the inner cavity of the cylindrical sinking groove (61).
8. A highly flexible ceramified polyolefin high flame retardant fire resistant cable according to claim 3, wherein: the surface of the ring groove (514) is provided with a plurality of positioning guide grooves (9), a guide block (10) is fixedly arranged at the position of the inner wall of the positioning ring (512) corresponding to the positioning guide grooves (9), and the guide block (10) is slidably connected inside the positioning guide grooves (9) at the corresponding positions.
9. The high flexibility ceramic polyolefin high flame retardant fire resistant cable of claim 1, wherein: the drainage piece (11) comprises an exhaust column (111), a first limiting block (112) is fixedly connected to one end of the exhaust column (111), an exhaust hole (115) is formed in the first limiting block (112), the other end of the exhaust column (111) penetrates through the outer wall of the outer jacket (1) in a sliding mode, a second limiting block (113) is fixedly connected to the other end of the exhaust column, an air inlet hole (114) is formed in the outer wall of the exhaust column (111), the air inlet hole (114) is communicated with the exhaust hole (115), and a third spring (116) is connected between the first limiting block (112) and the outer portion of the outer jacket (1).
10. The high flexibility ceramic polyolefin high flame retardant fire resistant cable of claim 2, wherein: the air outlets are distributed in a net shape on the outer wall of the upper hemisphere, the air outlets are communicated with the inside of the hollow cavity of the heat transfer ball (73), the outer sheath (1) is made of high-flexibility ceramic polyolefin material, inert shielding gas is filled in the hollow cavity of the lantern ring (4), carbamate is filled in the hollow cavity of the heat transfer ball (73), and the heat conducting rings (71) and the heat conducting rods (72) are made of insulating heat conducting materials.
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| CN202311159561.1A CN117116543B (en) | 2023-09-11 | 2023-09-11 | High-flexibility ceramic polyolefin high-flame-retardance fireproof cable |
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| CN202311159561.1A CN117116543B (en) | 2023-09-11 | 2023-09-11 | High-flexibility ceramic polyolefin high-flame-retardance fireproof cable |
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| CN117116543B CN117116543B (en) | 2024-01-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117711685A (en) * | 2024-01-25 | 2024-03-15 | 北京山联新材料科技有限公司 | Fireproof high-power charging cable |
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| US2798922A (en) * | 1951-07-19 | 1957-07-09 | Westinghouse Electric Corp | Circuit interrupters |
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