CN118039237A - High flexible cable with flame retardant function - Google Patents
High flexible cable with flame retardant function Download PDFInfo
- Publication number
- CN118039237A CN118039237A CN202410336367.4A CN202410336367A CN118039237A CN 118039237 A CN118039237 A CN 118039237A CN 202410336367 A CN202410336367 A CN 202410336367A CN 118039237 A CN118039237 A CN 118039237A
- Authority
- CN
- China
- Prior art keywords
- flame
- retardant
- cable
- central sleeve
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 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 group 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 title claims abstract description 71
- 239000003063 flame retardant Substances 0.000 claims abstract description 60
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
- 239000000446 fuel Substances 0.000 claims abstract description 9
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 238000002955 isolation Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000037303 wrinkles Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 229910002804 graphite Inorganic materials 0.000 description 15
- 239000010439 graphite Substances 0.000 description 15
- 239000010410 layer Substances 0.000 description 14
- 239000003921 oil Substances 0.000 description 5
- 238000010304 firing Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- 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
- Insulated Conductors (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention belongs to the technical field of cables, and discloses a high-flexibility cable with a flame-retardant function. The high flexible cable with the flame-retardant function comprises an outer sheath, a steel belt layer and an inner sheath are sequentially sleeved in the outer sheath, a flame-retardant structure is further sleeved in the inner sheath, the outer of the flame-retardant structure is wrapped with a wrapping belt, a central sleeve is arranged in the flame-retardant structure, a plurality of cable cores are arranged between the flame-retardant structure and the central sleeve, and the cable cores are annularly arranged by taking the axis of the central sleeve as a reference. According to the high flexible cable with the flame-retardant function, through the design of the flame-retardant structure and the central sleeve, when the abnormal heating of the cable core is in a fire temperature range, the heating part can be rapidly filled by utilizing the thermal expansion of the flame-retardant layer, the cable core is pushed to move towards the center, and the internal resistance fuel is released by the cooperation of the external expansion of the rupture membrane wrinkles to rupture the central sleeve, so that the abnormal heating position of the cable is rapidly filled with flame retardant, precious time is provided for cable rush repair, and the problem in the background technology is solved.
Description
Technical Field
The invention relates to the technical field of cables, in particular to a high-flexibility cable with a flame-retardant function.
Background
The power cable is a cable for transmitting and distributing electric energy, and is commonly used for urban underground power grids, power station outgoing lines, power supply in industrial and mining enterprises and power transmission lines under sea water passing through the river.
The flame retardant performance of the common flame-retardant cable generally depends on the sheath material, and the conventional flame-retardant rubber is generally adopted, so that the flame retardant high temperature resistance is better, but the cable is always heated until the sheath is broken down in the process of firing, if the abnormal point can be interfered in the process of heating the cable, the risk of firing can be greatly reduced, and even avoided, so that the high-flexibility cable with the flame retardant function is provided.
Disclosure of Invention
The invention aims to provide a high-flexibility cable with a flame-retardant function, which solves the problems in the background technology.
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a high flexible cable with fire-retardant function, includes the oversheath, steel band layer and inner sheath have been cup jointed in proper order in the oversheath, still cup jointed fire-retardant structure in the inner sheath, fire-retardant structure is outward around having the band, be provided with central sleeve pipe in the fire-retardant structure, be provided with a plurality of cable core between fire-retardant structure and the central sleeve pipe, and the cable core uses central sheathed tube axle center as reference annular arrangement.
The flame-retardant structure comprises a flame-retardant sleeve and a flame-retardant layer filled in the flame-retardant sleeve, wherein an inward-protruding isolation part is arranged on the inner wall of the flame-retardant sleeve, and the isolation part is inserted between two adjacent cable cores.
The outer wall of the central sleeve is provided with a supporting part protruding outwards, the supporting part is inserted between two adjacent cable cores and is contacted with the isolation part, and the central sleeve is filled with fuel resistant oil.
Preferably, the flame-retardant layer is an expansion-resistant fuel and is used for expanding and flame-retarding in an abnormal high-temperature state of the cable.
Preferably, the number of the isolating parts, the supporting parts and the cable cores is the same, and the isolating parts and the supporting parts are all annularly arranged by taking the center of the central sleeve as a reference.
Preferably, the contact position of the isolation part and the supporting part is provided with an inward membrane rupture fold which is used for puncturing the central sleeve to release the fire-retardant oil after expansion, and the cross section of the membrane rupture fold is W-shaped.
Preferably, the cross section of the cable core is triangular, and one corner of the cable core points to the middle part of the central sleeve.
Preferably, the inside of the central sleeve is also provided with a supporting component, the supporting component comprises a central column, a plurality of groups of supporting bars are arranged on the central column, the number of the groups of the supporting bars is the same as that of the supporting parts, and the two supporting bars are in a group and extend into the inner sides of the corresponding supporting parts to provide support.
By adopting the technical scheme, the invention has the beneficial effects that:
According to the high flexible cable with the flame-retardant function, through the design of the flame-retardant structure and the central sleeve, when the abnormal heating of the cable core is in a fire temperature range, the flame-retardant layer is utilized to be heated and expanded to rapidly fill the heating part and push the cable core to move towards the center, and the outer expansion of the rupture folds is matched to rupture the central sleeve to release the internal resistance fuel oil of the central sleeve, so that the abnormal heating position of the cable is rapidly filled with flame retardant, valuable time is provided for cable rush repair, meanwhile, under the normal state, the design of the central sleeve also provides excellent flexibility for the cable, the position of the cable core is maintained, the elasticity of the cable is improved, and the problem in the background technology is solved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
Fig. 2 is a cross-sectional view of the present invention.
In the figure: 1 outer sheath, 2 steel band layer, 3 inner sheath, 4 fire-retardant structure, 41 fire-retardant cover, 42 fire-retardant layer, 43 isolation part, 5 band, 6 center sleeve, 61 supporting part, 7 cable core, 8 rupture of membranes fold, 9 supporting component, 91 center post, 92 support bar.
Detailed Description
Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a high flexible cable with fire-retardant function, includes oversheath 1, has cup jointed steel tape layer 2 and inner sheath 3 in proper order in oversheath 1, has still cup jointed fire-retardant structure 4 in the inner sheath 3, and fire-retardant structure 4 is around having band 5, is provided with central sleeve pipe 6 in the fire-retardant structure 4, is provided with a plurality of cable core 7 between fire-retardant structure 4 and the central sleeve pipe 6, and cable core 7 uses the axle center of central sleeve pipe 6 as the annular arrangement of reference.
The cable core 7 is formed by wrapping a conductor, an inner semiconductor shield, an insulating layer, an outer semiconductor shield and the like, belongs to the prior art in the field, and is not described in detail.
The cross section of the cable core 7 is triangular, one corner of the cable core is directed to the middle part of the central sleeve 6, the triangular prism is structurally designed so that the flame-retardant layer 42 expands and inwards extrudes each cable core 7 to enable the cable core to be approximately round, and the cable core is fully wrapped by the flame-retardant layer 42 in cooperation with flame-retardant oil to form an isolation space.
The flame-retardant structure 4 comprises a flame-retardant sleeve 41 and a flame-retardant layer 42 filled in the flame-retardant sleeve 41, wherein an isolation part 43 protruding inwards is arranged on the inner wall of the flame-retardant sleeve 41, and the isolation part 43 is inserted between two adjacent cable cores 7.
The outer wall of the central sleeve 6 is provided with a supporting part 61 protruding outwards, the supporting part 61 is inserted between two adjacent cable cores 7 and is contacted with the isolation part 43, and the central sleeve 6 is filled with fuel resistant oil.
The flame retardant layer 42 is an intumescent flame retardant fuel for intumescent flame retardance under the abnormal high temperature state of the cable, the intumescent flame retardant fuel is a common material in the flame retardant field of the cable, expandable graphite is usually added into the intumescent flame retardant fuel, the expandable graphite has the characteristics of high temperature resistance, low temperature resistance, pressure resistance, self-lubricating property, corrosion resistance, flexibility, plasticity, shock resistance and the like, the expandable graphite standard generally has a plurality of standards of 50 meshes, 80 meshes, 100 meshes and the like, the expandable graphite used as a novel intumescent flame retardant additive for the flame retardant has the advantages and the characteristics of the expandable graphite used as the flame retardant, the expandable graphite used as the flame retardant is different from other expandable agents, the expandable graphite used as the flame retardant is decomposed by compounds occluded in an interlayer lattice when the expandable graphite used as the flame retardant is subjected to high temperature of 200 ℃, the expanded graphite used as the expandable graphite used as the flame retardant begins to expand, the expanded graphite becomes vermiform with very low density to form a very good heat insulation layer, the expandable graphite used as the flame retardant has the characteristics of low heat release rate, low mass loss, less smoke generation, non-toxicity and the like in the fire disaster, the technical scheme combines the characteristics of the flame retardant and the expandable graphite, the expandable graphite used as the flame retardant is different from the expandable graphite, and the flame to form a full-resistant cable, and can form a full-round package.
The number of the isolating parts 43, the supporting parts 61 and the cable cores 7 is the same, and the isolating parts 43 and the supporting parts 61 are all annularly arranged with the center of the center sleeve 6 as a reference.
The contact position of the isolation part 43 and the supporting part 61 is provided with an invaginated rupture membrane fold 8 for piercing the central sleeve 6 to release the fire-retardant oil after expansion, and the section of the rupture membrane fold 8 is W-shaped.
The inside of the center sleeve 6 is also provided with a supporting component 9, the supporting component 9 comprises a center column 91, a plurality of groups of supporting bars 92 are arranged on the center column 91, the number of groups of the supporting bars 92 is the same as that of the supporting parts 61, and two groups of the supporting bars 92 are arranged in one group and extend into the inner sides of the corresponding supporting parts 61 to provide support.
In summary, through the design of the flame-retardant structure and the central sleeve, when the abnormal heating of the cable core 7 is in the fire temperature range, the flame-retardant layer 42 is utilized to be heated and expanded to rapidly fill the heating part and push the cable core 7 to move towards the center, and the outer expansion of the rupture membrane fold 8 is matched to rupture the central sleeve 6 to release the internal resistance fuel oil, so that the abnormal heating position of the cable is rapidly filled with flame retardant, thereby providing valuable time for cable rush repair, and meanwhile, under the normal state, the design of the central sleeve 6 also provides excellent flexibility for the cable, maintains the position of the cable core 7 and improves the elasticity of the cable, thereby solving the problems in the background art.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention, and therefore the invention is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The utility model provides a high flexible cable with fire-retardant function, includes the oversheath, cup jointed steel band layer and inner sheath in proper order in the oversheath, its characterized in that: the inner sheath is internally sleeved with a flame-retardant structure, the outer of the flame-retardant structure is wrapped with a wrapping belt, a central sleeve is arranged in the flame-retardant structure, a plurality of cable cores are arranged between the flame-retardant structure and the central sleeve, and the cable cores are annularly arranged by taking the axle center of the central sleeve as a reference;
the flame-retardant structure comprises a flame-retardant sleeve and a flame-retardant layer filled in the flame-retardant sleeve, wherein the inner wall of the flame-retardant sleeve is provided with an inward protruding isolation part, and the isolation part is inserted between two adjacent cable cores;
The outer wall of the central sleeve is provided with a supporting part protruding outwards, the supporting part is inserted between two adjacent cable cores and is contacted with the isolation part, and the central sleeve is filled with fuel resistant oil.
2. The high flexible cable with flame retardant function according to claim 1, wherein: the flame-retardant layer is an expansion flame-retardant fuel and is used for expanding and flame-retarding under the abnormal high-temperature state of the cable.
3. A high flexible cable with flame retardant function according to claim 2, wherein: the number of the isolating parts, the supporting parts and the cable cores is the same, and the isolating parts and the supporting parts are all annularly arranged by taking the center of the central sleeve as a reference.
4. A high flexible cable with flame retardant function according to claim 3, wherein: the contact position of the isolation part and the supporting part is provided with an inward membrane rupture fold which is used for puncturing the central sleeve to release the fire-retardant oil after expansion, and the cross section of the membrane rupture fold is W-shaped.
5. The high flexible cable with flame retardant function according to claim 4, wherein: the section of the cable core is triangular, and one corner of the cable core points to the middle part of the central sleeve.
6. The high flexible cable with flame retardant function according to claim 5, wherein: the inside of center sleeve still is equipped with supporting component, supporting component includes the center post, be provided with a plurality of groups of support bars on the center post, the group number of support bar is the same with the group number of supporting part, two support bars are a set of and extend into corresponding supporting part inboard in order to provide the support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410336367.4A CN118039237A (en) | 2024-03-22 | 2024-03-22 | High flexible cable with flame retardant function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410336367.4A CN118039237A (en) | 2024-03-22 | 2024-03-22 | High flexible cable with flame retardant function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118039237A true CN118039237A (en) | 2024-05-14 |
Family
ID=90995115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410336367.4A Pending CN118039237A (en) | 2024-03-22 | 2024-03-22 | High flexible cable with flame retardant function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118039237A (en) |
-
2024
- 2024-03-22 CN CN202410336367.4A patent/CN118039237A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |