CN114388178B - Flexible insulating fireproof cable with metal sheath - Google Patents
Flexible insulating fireproof cable with metal sheath Download PDFInfo
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- CN114388178B CN114388178B CN202210086487.4A CN202210086487A CN114388178B CN 114388178 B CN114388178 B CN 114388178B CN 202210086487 A CN202210086487 A CN 202210086487A CN 114388178 B CN114388178 B CN 114388178B
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- 239000002184 metal Substances 0.000 title claims abstract description 41
- 239000010410 layer Substances 0.000 claims abstract description 112
- 239000003063 flame retardant Substances 0.000 claims abstract description 72
- 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 67
- 239000000945 filler Substances 0.000 claims abstract description 26
- 239000011241 protective layer Substances 0.000 claims abstract description 20
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims description 32
- 238000009413 insulation Methods 0.000 claims description 15
- 230000003139 buffering effect Effects 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 5
- 239000004800 polyvinyl chloride Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
-
- 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
- H01B7/184—Sheaths comprising grooves, ribs or other projections
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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
- H01B7/1895—Internal space filling-up means
-
- 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
- H01B7/20—Metal tubes, e.g. lead sheaths
-
- 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
- H01B7/225—Longitudinally placed metal wires or tapes forming part of an outer 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
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a flexible insulating fireproof cable with a metal sheath, which relates to the technical field of cables and comprises three cable cores twisted with each other, wherein buffer fillers are arranged between gaps of the cable cores, an insulating layer is arranged on the outer wall of the buffer fillers, a shielding layer is arranged on the outer wall of the insulating layer, a protective layer is arranged on the outer wall of the shielding layer, a flame-retardant layer is arranged on the outer wall of the protective layer, and a plastic insulating layer is arranged on the outer wall of the flame-retardant layer. According to the invention, through the matching among the arranged flame-retardant layer, the flame-retardant outer layer, the flame-retardant inner layer, the flame-retardant connecting layer, the deformation-preventing filler and the metal sheath, the surface of the metal sheath can be protected through the deformation-preventing filler, and the force generated when the metal sheath collides with a hard object can be buffered, so that the cable is prevented from being damaged, and meanwhile, the cable can be prevented from burning through the matching between the flame-retardant outer layer and the flame-retardant inner layer.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a flexible insulating fireproof cable with a metal sheath.
Background
The wire and cable is one of the largest matching industries in national economy, is the basis of each industry, and the product is widely applied to the fields of electric power, construction, civil use, communication, ships, military industry, aviation, petrochemical industry and the like. The electric wires and cables are closely related to national economy development, are praised as blood vessels and nerves of national economy, are essential basic equipment for conveying electric energy, transmitting information and manufacturing various motors, instruments and meters and realizing electromagnetic energy conversion, and are necessary basic products in future electrified and informationized society. Calculating according to the scale of the production value, wherein the wire and cable industry is inferior to the whole automobile manufacturing and the manufacturing of parts and accessories in the subdivision industry of the mechanical industry in China, and is the second place; the method is a sub-industry with the largest standard in 20 subdivision industries in the electrical and electronic industry, occupies about one quarter of the output value scale, and is accompanied with the high-speed development of the Chinese wire and cable industry, the number of newly-increased enterprises is continuously increased, and the whole technical level of the industry is greatly improved.
The following problems exist in the prior art:
1. in the use process of the cable, when the cable is impacted or extruded from the outside, the cable is deformed and broken, so that the cable is easy to be in short circuit, the cable is exposed to flame high temperature to burn, and the cable is more damaged;
2. after the cable is erected, the compressive capacity of the cable is limited due to the overlong erection length of the cable, and the cable core of the erected cable is easily damaged in a compressed environment, so that potential safety hazards are caused in the use process of the cable.
Disclosure of Invention
The invention provides a flexible insulating fireproof cable with a metal sheath, which aims to prevent the cable from burning in the use process and solve the problems that the cable is easy to crack when the cable is impacted and extruded by the outside, so that the cable is damaged and burned; another purpose is that when the length of the cable is too long, the cable is easy to damage due to limited compression resistance of the cable, so that the cable core in the cable can be prevented from being damaged when the length of the cable is too long.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a flexible insulation fireproof cable with metal sheath, includes three cable cores of intertwisting each other, be provided with the buffering filler between the clearance of cable core, the outer wall of buffering filler is provided with the heat preservation, the outer wall of heat preservation is provided with the shielding layer, the outer wall of shielding layer is provided with the inoxidizing coating, the outer wall of inoxidizing coating is provided with fire-retardant layer, the outer wall of fire-retardant layer is provided with the plastic insulating layer.
The technical scheme of the invention is further improved as follows: the plastic insulation layer's inner wall has seted up and has placed the ring channel, the inner wall of placing the ring channel is provided with the metal sheath, place the inner wall of ring channel and be located and fill between the outer wall of metal sheath and have the filler of preapring for an unfavorable turn of events, the inner wall of metal sheath is laminated mutually with the outer wall of flame retardant coating.
By adopting the technical scheme, the metal sheath in the scheme can avoid excessive deformation of the cable, and simultaneously can avoid the surface of the metal sheath from sinking when the metal sheath contacts with a hard object through the deformation-preventing filler.
The technical scheme of the invention is further improved as follows: the flame retardant layer comprises a flame retardant outer layer, the inner wall of the flame retardant outer layer is fixedly connected with a flame retardant connecting layer, the inner wall of the flame retardant connecting layer is fixedly connected with a flame retardant inner layer, and the inner wall of the flame retardant inner layer is attached to the outer wall of the protective layer.
By adopting the technical scheme, the flame-retardant inner layer and the flame-retardant outer layer in the scheme are matched, so that the cable can be prevented from being burnt when the cable is in short circuit, and the cable can be prevented from being burnt continuously.
The technical scheme of the invention is further improved as follows: the inside of inoxidizing coating has seted up the pressure-bearing hole, the inner wall in pressure-bearing hole is provided with wire connection rope, wire connection rope's length equals with the length in pressure-bearing hole, the inner wall of inoxidizing coating is laminated with the outer wall of shielding layer.
By adopting the technical scheme, the pressure bearing hole in the scheme can enable the protective layer to bear larger pressure, so that the cable can be prevented from being damaged when being subjected to external pressure, and meanwhile, the steel wire connecting rope can enable the stretching capacity of the protective layer to be stronger, so that the bearing capacity of the cable is stronger.
The technical scheme of the invention is further improved as follows: the inner wall of shielding layer has seted up the buffering ring channel, the inner wall fixedly connected with connecting strip of buffering ring channel, the other end fixedly connected with solid fixed ring of connecting strip, gu fixed ring's inner wall is provided with the activity post, the one end of activity post runs through gu fixed ring's outer wall and fixedly connected with spacing separation blade, the other end fixedly connected with activity paster of activity post.
By adopting the technical scheme, the movable column in the scheme can enable the movable patch to move, and meanwhile, the limiting baffle can limit the moving distance of the movable column, so that the moving distance of the movable column is prevented from being too large.
The technical scheme of the invention is further improved as follows: the movable patch is in an arc-shaped arrangement, the inner wall of the movable patch is overlapped with the outer wall of the heat preservation, and the outer wall of the limiting baffle is movably connected with the inner wall of the buffering annular groove.
By adopting the technical scheme, the movable patch in the scheme can be conveniently attached to the heat insulation layer, so that the movement of the heat insulation layer is buffered.
The technical scheme of the invention is further improved as follows: the inside of heat preservation has seted up the heat preservation chamber, the inner wall fixedly connected with of heat preservation chamber six interior support bars, the inner wall fixedly connected with location strip of heat preservation, the inner wall and the outer wall joint of buffering filler of location strip.
By adopting the technical scheme, the temperature of the inside of the heat preservation cavity in the scheme can be kept stable, so that the cable is prevented from being influenced by the external temperature easily when the weather is cold, and meanwhile, the heat preservation cavity can be separated by the arranged inner support bars, so that the heat preservation cavity can be protected in a sectional mode.
The technical scheme of the invention is further improved as follows: the flame-retardant outer layer and the flame-retardant inner layer are made of polyvinyl chloride materials, and the thickness of the flame-retardant outer layer and the thickness of the flame-retardant inner layer are 1mm.
By adopting the technical scheme, the flame-retardant outer layer and the flame-retardant inner layer in the scheme are both arranged through the polyvinyl chloride material, so that the cable can be effectively prevented from being burnt more and more when encountering short circuit, and the loss of the cable in the ignition process is reduced.
By adopting the technical scheme, compared with the prior art, the invention has the following technical progress:
1. the invention provides a flexible insulating fireproof cable with a metal sheath, which is characterized in that a flame-retardant layer, a flame-retardant outer layer, a flame-retardant inner layer, a flame-retardant connecting layer, an anti-deformation filler and the metal sheath are arranged in the flexible insulating fireproof cable, the anti-deformation filler and the metal sheath are matched, the surface of the metal sheath can be protected through the anti-deformation filler, the force of the metal sheath when the metal sheath collides with a hard object can be buffered, so that the cable is prevented from being damaged, and meanwhile, the cable can be prevented from being burnt through the matching between the flame-retardant outer layer and the flame-retardant inner layer, so that the damage degree of the cable is prevented from being larger.
2. The invention provides a flexible insulating fireproof cable with a metal sheath, which is characterized in that through the cooperation among a protective layer, a pressure-bearing hole, a steel wire connecting rope, a shielding layer, a movable patch, a limiting baffle and a movable column, the pressure-bearing hole can enable the compression resistance of the cable to be stronger, so that the cable is prevented from being damaged, and meanwhile, the cable which can be reinforced through the steel wire connecting rope can bear larger stress change, so that the service life of the cable can be prolonged, and meanwhile, the cable is more durable.
3. The invention provides a flexible insulating fireproof cable with a metal sheath, which is characterized in that the inside of a heat-insulating cavity can be separated through the inner support bar by matching the heat-insulating layer, the heat-insulating cavity, the inner support bar and the positioning bar, so that the temperature of a cable core can be conveniently kept through the separated heat-insulating cavity, the cable core is prevented from being damaged by low temperature, and meanwhile, the positioning bar can be prevented from shaking between the heat-insulating layer and a buffer filler.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a cross-sectional view of the structure of the flexible insulated fireproof cable of the present invention;
FIG. 3 is a cross-sectional view of the structure of the flame retardant layer of the present invention;
FIG. 4 is a cross-sectional view of the structure of the protective layer of the present invention;
FIG. 5 is a cross-sectional view of a plastic insulating layer according to the present invention;
FIG. 6 is a cross-sectional view of a shield layer of the present invention;
fig. 7 is a cross-sectional view of the insulation layer of the present invention.
In the figure: 1. a plastic insulating layer; 2. a flame retardant layer; 3. a protective layer; 4. a shielding layer; 5. a heat preservation layer; 6. buffering the filler; 7. a cable core; 8. a flame retardant outer layer; 9. a flame retardant tie layer; 10. a flame retardant inner layer; 11. a pressure-bearing hole; 12. an anti-deformation filler; 13. a metal sheath; 14. placing an annular groove; 15. buffering annular groove; 16. a connecting strip; 17. a fixing ring; 18. a movable patch; 19. a limiting baffle; 20. a movable column; 21. an inner support bar; 22. a heat preservation cavity; 23. a positioning strip; 24. the steel wire is connected with the rope.
Detailed Description
The invention is further illustrated by the following examples:
example 1
As shown in fig. 1-7, the invention provides a flexible insulation fireproof cable with a metal sheath, which comprises three cable cores 7 twisted with each other, wherein buffer fillers 6 are arranged between gaps of the cable cores 7, an insulation layer 5 is arranged on the outer wall of each buffer filler 6, a shielding layer 4 is arranged on the outer wall of each insulation layer 5, a protective layer 3 is arranged on the outer wall of each shielding layer 4, a flame-retardant layer 2 is arranged on the outer wall of each protective layer 3, and a plastic insulation layer 1 is arranged on the outer wall of each flame-retardant layer 2.
As shown in fig. 1 to 7, preferably, the inner wall of the plastic insulating layer 1 is provided with a placement annular groove 14, the inner wall of the placement annular groove 14 is provided with a metal sheath 13, an anti-deformation filler 12 is filled between the inner wall of the placement annular groove 14 and the outer wall of the metal sheath 13, the inner wall of the metal sheath 13 is attached to the outer wall of the flame retardant layer 2, the metal sheath 13 can avoid excessive deformation of the cable, and meanwhile, the surface of the metal sheath 13 can avoid sinking when the metal sheath 13 contacts with a hard object through the anti-deformation filler 12.
As shown in fig. 1-7, preferably, the flame retardant layer 2 includes a flame retardant outer layer 8, the inner wall fixedly connected with flame retardant connecting layer 9 of flame retardant outer layer 8, the inner wall fixedly connected with flame retardant inner layer 10 of flame retardant connecting layer 9, the inner wall of flame retardant inner layer 10 is laminated with the outer wall of protective layer 3, cooperation between flame retardant inner layer 10 and flame retardant outer layer 8, thereby can avoid the cable to continue burning when appearing the short circuit and burning, flame retardant outer layer 8, flame retardant inner layer 10 are polyvinyl chloride material setting, flame retardant outer layer 8, thickness of flame retardant inner layer 10 are 1mm, flame retardant outer layer 8 and flame retardant inner layer 10 all set up through polyvinyl chloride material, can make effectual prevention cable when meetting the short circuit, avoid burning the fire situation to be greater and greater, thereby reduce the loss when the cable fires.
As shown in fig. 1 to 7, preferably, the pressure-bearing hole 11 is formed in the protective layer 3, the steel wire connecting rope 24 is arranged on the inner wall of the pressure-bearing hole 11, the length of the steel wire connecting rope 24 is equal to that of the pressure-bearing hole 11, the inner wall of the protective layer 3 is attached to the outer wall of the shielding layer 4, the pressure-bearing hole 11 can enable the protective layer 3 to bear larger pressure, so that the cable can be prevented from being damaged when being subjected to external pressure, meanwhile, the steel wire connecting rope 24 can enable the tensile capacity of the protective layer 3 to be stronger, so that the bearing capacity of the cable is stronger, the steel wire connecting rope 24 can strengthen the cable, enable the cable to bear larger stress change, the service life of the cable can be prolonged, and meanwhile, the cable is more durable.
As shown in fig. 1-7, preferably, the inner wall of the shielding layer 4 is provided with a buffering annular groove 15, the inner wall of the buffering annular groove 15 is fixedly connected with a connecting strip 16, the other end of the connecting strip 16 is fixedly connected with a fixing ring 17, the inner wall of the fixing ring 17 is provided with a movable column 20, one end of the movable column 20 penetrates through the outer wall of the fixing ring 17 and is fixedly connected with a limiting baffle 19, the other end of the movable column 20 is fixedly connected with a movable patch 18, the movable column 20 can enable the movable patch 18 to move, meanwhile, the limiting baffle 19 can limit the moving distance of the movable column 20, the moving distance of the movable column 20 is prevented from being too large, the movable patch 18 is in arc-shaped arrangement, the inner wall of the movable patch 18 is overlapped with the outer wall of the heat preservation layer 5, the outer wall of the limiting baffle 19 is movably connected with the inner wall of the buffering annular groove 15, and the movable patch 18 can be conveniently attached with the heat preservation layer 5, so that the movement of the heat preservation layer 5 is buffered.
As shown in fig. 1-7, preferably, the heat preservation chamber 22 has been seted up to the inside of heat preservation 5, six interior support bars 21 of inner wall fixedly connected with of heat preservation chamber 22, the inner wall fixedly connected with location strip 23 of heat preservation 5, the inner wall of location strip 23 and the outer wall joint of buffer filling 6, heat preservation chamber 22 can make its inside temperature keep stable, and then avoid when the weather is cold, the cable receives external temperature's influence easily, the interior support bar 21 of setting can separate heat preservation chamber 22 simultaneously, make heat preservation chamber 22 can carry out sectional type protection, thereby can be convenient for keep the temperature of cable core 7 through divided heat preservation chamber 22, avoid low temperature to cause the damage to cable core 7, simultaneously location strip 23 can avoid appearing rocking between heat preservation 5 and the buffer filling 6.
The working principle of the flexible insulating fireproof cable with the metal sheath is specifically described below.
As shown in fig. 1 to 7, when the flexible insulated fireproof cable is erected, the compression resistance of the flexible insulated fireproof cable is stronger through the pressure bearing hole 11, deformation of the flexible insulated fireproof cable caused by extrusion in the process of erection is avoided, so that the flexible insulated fireproof cable is prevented from being damaged, after the flexible insulated fireproof cable is erected, the cable can bear larger stress change through the steel wire connecting rope 24, the cable is more durable, the cooperation between the deformation preventing filler 12 and the metal sheath 13 can protect the surface of the metal sheath 13 through the deformation preventing filler 12, the force of the metal sheath 13 during impact with a hard object is buffered, simultaneously also avoid flexible insulating fireproof cable's surface to receive the damage, when flexible insulating fireproof cable runs into the conflagration, through the cooperation between fire-retardant outer 8 and the fire-retardant inlayer 10, can avoid flexible insulating fireproof cable to appear excessively burning, fire-retardant to flexible insulating fireproof cable, thereby protect cable core 7, separate the inside of heat preservation chamber 22 through interior support bar 21, thereby keep cable core 7's temperature through divided heat preservation chamber 22, avoid the low temperature to cause the damage to cable core 7, simultaneously divided heat preservation chamber 22 can avoid wherein damage appears in any, and influence appears in the protection to cable core 7, simultaneously location strip 23 can avoid appearing rocking between heat preservation 5 and the buffering filler 6.
The foregoing invention has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.
Claims (3)
1. The utility model provides a flexible insulation fireproof cable with metal sheath, includes three cable core (7) of intertwisting each other, its characterized in that: a buffer filler (6) is arranged between gaps of the cable cores (7), an insulation layer (5) is arranged on the outer wall of the buffer filler (6), a shielding layer (4) is arranged on the outer wall of the insulation layer (5), a protective layer (3) is arranged on the outer wall of the shielding layer (4), a flame-retardant layer (2) is arranged on the outer wall of the protective layer (3), and a plastic insulation layer (1) is arranged on the outer wall of the flame-retardant layer (2);
a heat preservation cavity (22) is formed in the heat preservation layer (5), six inner support bars (21) are fixedly connected to the inner wall of the heat preservation cavity (22), a positioning bar (23) is fixedly connected to the inner wall of the heat preservation layer (5), and the inner wall of the positioning bar (23) is clamped with the outer wall of the buffer filler (6);
the inner part of the protective layer (3) is provided with a pressure-bearing hole (11), the inner wall of the pressure-bearing hole (11) is provided with a steel wire connecting rope (24), the length of the steel wire connecting rope (24) is equal to that of the pressure-bearing hole (11), and the inner wall of the protective layer (3) is attached to the outer wall of the shielding layer (4);
the shielding layer is characterized in that a buffer annular groove (15) is formed in the inner wall of the shielding layer (4), a connecting strip (16) is fixedly connected to the inner wall of the buffer annular groove (15), a fixed ring (17) is fixedly connected to the other end of the connecting strip (16), a movable column (20) is arranged on the inner wall of the fixed ring (17), one end of the movable column (20) penetrates through the outer wall of the fixed ring (17) and is fixedly connected with a limiting baffle (19), and a movable patch (18) is fixedly connected to the other end of the movable column (20);
the plastic insulation layer (1) is characterized in that a placement annular groove (14) is formed in the inner wall of the placement annular groove (14), a metal sheath (13) is arranged on the inner wall of the placement annular groove (14), an anti-deformation filler (12) is filled between the outer walls of the metal sheath (13), and the inner wall of the metal sheath (13) is attached to the outer wall of the flame retardant layer (2);
the movable patch (18) is arranged in an arc shape, the inner wall of the movable patch (18) is overlapped with the outer wall of the heat insulation layer (5), and the outer wall of the limiting baffle (19) is movably connected with the inner wall of the buffering annular groove (15).
2. A flexible insulated fireproof cable provided with a metal sheath according to claim 1, wherein: the flame-retardant coating (2) comprises a flame-retardant outer layer (8), wherein the inner wall of the flame-retardant outer layer (8) is fixedly connected with a flame-retardant connecting layer (9), the inner wall of the flame-retardant connecting layer (9) is fixedly connected with a flame-retardant inner layer (10), and the inner wall of the flame-retardant inner layer (10) is attached to the outer wall of the protective layer (3).
3. A flexible insulated fireproof cable provided with a metal sheath according to claim 2, wherein: the flame-retardant outer layer (8) and the flame-retardant inner layer (10) are made of polyvinyl chloride materials, and the thickness of the flame-retardant outer layer (8) and the thickness of the flame-retardant inner layer (10) are 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086487.4A CN114388178B (en) | 2022-01-25 | 2022-01-25 | Flexible insulating fireproof cable with metal sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210086487.4A CN114388178B (en) | 2022-01-25 | 2022-01-25 | Flexible insulating fireproof cable with metal sheath |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114388178A CN114388178A (en) | 2022-04-22 |
| CN114388178B true CN114388178B (en) | 2024-03-29 |
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ID=81203557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210086487.4A Active CN114388178B (en) | 2022-01-25 | 2022-01-25 | Flexible insulating fireproof cable with metal sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114388178B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103456403A (en) * | 2013-08-22 | 2013-12-18 | 安徽晋源电缆有限公司 | Waterproof flame-retardant cable |
| CN104616812A (en) * | 2015-01-30 | 2015-05-13 | 安徽省高沟电缆有限公司 | Industrial fireproof and moistureproof power cable |
| CN205508495U (en) * | 2016-04-06 | 2016-08-24 | 中天日立射频电缆有限公司 | Flexible fireproof cable |
| CN208385072U (en) * | 2018-06-07 | 2019-01-15 | 扬州市金阳光电缆有限公司 | A kind of preferable power cable of hardy type shielding |
| CN209625901U (en) * | 2019-04-30 | 2019-11-12 | 湖北南远电缆科技有限公司 | A kind of mineral insulated cable |
| CN212161354U (en) * | 2020-05-19 | 2020-12-15 | 沈阳沈缆银环企业集团有限公司 | Insulated cable with prevent structure of breaking apart |
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2022
- 2022-01-25 CN CN202210086487.4A patent/CN114388178B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103456403A (en) * | 2013-08-22 | 2013-12-18 | 安徽晋源电缆有限公司 | Waterproof flame-retardant cable |
| CN104616812A (en) * | 2015-01-30 | 2015-05-13 | 安徽省高沟电缆有限公司 | Industrial fireproof and moistureproof power cable |
| CN205508495U (en) * | 2016-04-06 | 2016-08-24 | 中天日立射频电缆有限公司 | Flexible fireproof cable |
| CN208385072U (en) * | 2018-06-07 | 2019-01-15 | 扬州市金阳光电缆有限公司 | A kind of preferable power cable of hardy type shielding |
| CN209625901U (en) * | 2019-04-30 | 2019-11-12 | 湖北南远电缆科技有限公司 | A kind of mineral insulated cable |
| CN212161354U (en) * | 2020-05-19 | 2020-12-15 | 沈阳沈缆银环企业集团有限公司 | Insulated cable with prevent structure of breaking apart |
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| CN114388178A (en) | 2022-04-22 |
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