CN209929026U - High-fire-resistance underground cable - Google Patents
High-fire-resistance underground cable Download PDFInfo
- Publication number
- CN209929026U CN209929026U CN201921311283.6U CN201921311283U CN209929026U CN 209929026 U CN209929026 U CN 209929026U CN 201921311283 U CN201921311283 U CN 201921311283U CN 209929026 U CN209929026 U CN 209929026U
- Authority
- CN
- China
- Prior art keywords
- sheath
- cable
- silica gel
- electrically conductive
- conductive cable
- 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.)
- Expired - Fee Related
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000741 silica gel Substances 0.000 claims abstract description 41
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 5
- 239000008397 galvanized steel Substances 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims 3
- 230000009970 fire resistant effect Effects 0.000 claims 3
- 239000003063 flame retardant Substances 0.000 abstract description 9
- 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 abstract description 8
- 230000032683 aging Effects 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 description 11
- 238000009941 weaving Methods 0.000 description 7
- 239000004927 clay Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
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
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- Insulated Conductors (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
The utility model discloses a high fire resistance underground cable, including first sheath, second sheath and electrically conductive cable. The utility model discloses a set gradually first sheath from outside to inside, second sheath and electrically conductive cable, carry out fire protection to electrically conductive cable through the second sheath, improve electrically conductive cable fire prevention security, protect second sheath and electrically conductive cable through first sheath, improve the protectiveness of underground cable, slow down the ageing of the line body, improve the life of the line body, elastic ring through setting gradually from inside to outside on the first sheath, the rubber sleeve, strap and silica gel cover, support the rubber sleeve through elastic ring, strap and silica gel cover, to electrically conductive cable production when preventing that the cable from receiving great external pressure influence, prevent to ignite each other between the wire, the inside packing of electrically conductive cable has the flame retardant efficiency that silica gel mud further improves underground cable.
Description
Technical Field
The utility model relates to an underground cable technical field especially relates to a high refractivity underground cable.
Background
Along with current electric power infrastructure's rapid development, arranging of cable divide into suspension type and bury formula more, compare in suspension type ground formula have arrange the convenience, the advantage lower and easy and maintenance of cost, but bury formula cable need prevent other materials such as groundwater from leading to the fact the influence to the circular telegram cable, thereby it reduces line body life to accelerate the ageing of line body, current traditional bury formula cable usually with the outside multilayer protective film of winding of wire then bury the underground, this kind of mode can reduce the influence of groundwater or other reasons to the line body to a certain extent, but in case the cable damages or the protective film that can ignite of conflagration emergence, thereby it is unfavorable for the fire behavior of underground cable to lead to the protective nature decline of cable.
Therefore, a high-fire-resistance underground cable is needed, the cable can be isolated from an external protective film, the protective film cannot be ignited once the cable catches fire, meanwhile, the protective film can protect the surface of the underground cable, the protective performance is improved, underground substances are reduced, the line aging is accelerated, and the service life of the line is prolonged.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high refractiveness underground cable aims at improving the not good poor problem of flame retardant efficiency of current underground cable protectiveness.
The utility model discloses a realize like this: the utility model provides a high fire resistance underground cable, including first sheath, second sheath and electrically conductive cable, the inside of first sheath is provided with the second sheath, and the inside of second sheath is provided with electrically conductive cable, the second sheath is including weaving cover and fire prevention mud, evenly distributed has a plurality of electrically conductive cables in weaving the cover, and it has fire prevention mud to weave to fill in the cover, first sheath includes the silica gel cover, the strap, rubber sleeve and elastic ring, elastic ring cover establishes the outside at the second sheath, and elastic ring is provided with a plurality of along the axial of second sheath, the outside at elastic ring is established to the rubber sleeve cover, and the outside cover of rubber sleeve is equipped with the strap, the silica gel cover establishes on the outside periphery of strap.
Further, the inside evenly distributed of silica gel cover has a plurality of copper line, and the copper line evenly sets up along the axial direction of silica gel cover, and then moulds the silica gel cover that has the copper line through integrated into one piece in the silica gel cover, can show and improve the anti extrusion ability of silica gel cover, improves the mechanical properties of silica gel cover, improves the barrier propterty to electrically conductive cable.
Further, electrically conductive cable includes wire core and insulating overcoat, and the wire core setting has the silica gel mud in the inside of insulating overcoat, and has filled between wire core and the insulating overcoat, and then has filled the flame retardant efficiency that has silica gel mud further to improve underground cable through the inside packing at electrically conductive cable to the wire core separates through the silica gel mud, prevents that wire spare intertwine from causing the heat to pile up.
Further, evenly be provided with the draw-in groove on the outside periphery of elasticity ring, and equal joint has water-absorbing rubber in the draw-in groove of elasticity ring, and then sets up the draw-in groove on the outside periphery through elasticity ring to through equal joint has water-absorbing rubber and then utilizes the good hydroscopicity of water-absorbing rubber in the draw-in groove, further improves underground cable's water-blocking nature.
Furthermore, the metal belt is formed by weaving a plurality of strands of galvanized steel wires and is provided with a multilayer structure, so that the tensile strength of the metal belt can be improved through the metal belt formed by weaving the plurality of strands of galvanized steel wires, the strength of the underground cable is improved, and meanwhile, the oxidability of the steel wires can be improved through the surface galvanizing of the steel wires.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set gradually first sheath, second sheath and electrically conductive cable from outside to inside, carry out fire protection to electrically conductive cable through the second sheath, improve electrically conductive cable fire prevention security, protect second sheath and electrically conductive cable through the first sheath, improve the protectiveness of underground cable, slow down the ageing of line body, improve the life of line body, through elastic ring, rubber sleeve, strap and the silica gel cover that set gradually from inside to outside on the first sheath, support rubber sleeve, strap and silica gel cover through elastic ring, prevent that the cable from producing the influence to electrically conductive cable when receiving great external pressure, utilize the strap to improve the tensile strength of bottom line wire simultaneously, the soft temperature resistance of silica gel cover texture can protect underground cable with chemical stability simultaneously, the fire prevention mud that fills in the second sheath braided cover has fire-retardant function simultaneously, prevent to ignite each other between the wire, the inside packing of electrically conductive cable has the flame retardant efficiency that silica gel mud further improved underground cable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall exploded structure of the present invention;
fig. 3 is an exploded view of the first sheath according to the embodiment of the present invention;
fig. 4 is a schematic structural view of a second sheath according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a conductive cable according to an embodiment of the present invention;
in the figure: 1. a first sheath; 11. a silica gel sleeve; 111. a copper wire; 12. a metal strip; 13. a rubber sleeve; 14. an elastic ring; 141. water-absorbing rubber; 2. a second sheath; 21. weaving a sleeve; 22. fire-proof mud; 3. a conductive cable; 31. a wire core; 32. silica gel mud; 33. and (4) insulating the outer sleeve.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, 2, 3, 4 and 5, an underground cable with high fire resistance includes a first sheath 1, a second sheath 2 and a conductive cable 3, the first sheath 1 is provided with the second sheath 2, the second sheath 2 is provided with the conductive cable 3, the second sheath 2 includes a woven sleeve 21 and fire clay 22, the woven sleeve 21 is uniformly distributed with a plurality of conductive cables 3, the woven sleeve 21 is filled with the fire clay 22, the first sheath 1 includes a silica gel sleeve 11, a metal belt 12, a rubber sleeve 13 and an elastic ring 14, the elastic ring 14 is sleeved on the outer side of the second sheath 2, the elastic ring 14 is provided with a plurality of elastic rings along the axial direction of the second sheath 2, the rubber sleeve 13 is sleeved on the outer side of the elastic ring 14, the metal belt 12 is sleeved on the outer side of the rubber sleeve 13, the silica gel sleeve 11 is sleeved on the outer circumferential surface of the metal belt 12, and the first sheath 1, the second sheath 2, the rubber sleeve 13, the metal belt 12 and the rubber sleeve, The second sheath 2 and the conductive cable 3, the conductive cable 3 is protected by the second sheath 2, the fireproof safety of the conductive cable 3 is improved, the second sheath 2 and the conductive cable 3 are protected by the first sheath 1, the protection performance of the underground cable is improved, the aging of the cable is slowed down, the service life of the cable is prolonged, the elastic ring 14, the rubber sleeve 13, the metal belt 12 and the silica gel sleeve 11 are sequentially arranged on the first sheath 1 from inside to outside, the rubber sleeve 13, the metal belt 12 and the silica gel sleeve 11 are supported by the elastic ring 14, the cable is prevented from being influenced by large external pressure on the conductive cable 3, the tensile capacity of a bottom line lead is improved by the metal belt 12, meanwhile, the silica gel sleeve 11 is soft in texture, temperature resistance and stable in chemical property and can protect the underground cable, and meanwhile, the fireproof mud 22 filled in the braided sleeve 21 of the second sheath 2 has a flame retardant function, the wires are prevented from being ignited mutually, and the silica gel cement 32 is filled in the conductive cable 3 to further improve the flame retardant effect of the underground cable.
Inside evenly distributed of silica gel cover 11 has a plurality of copper line 111, and copper line 111 evenly sets up along the axial direction of silica gel cover 11, and then moulds the silica gel cover 11 that has copper line 111 through integrated into one piece in silica gel cover 11, can show and improve the anti extrusion ability of silica gel cover 11, improves the mechanical properties of silica gel cover 11, improves the barrier propterty to electrically conductive cable 3.
The electrically conductive cable 3 includes wire core 31 and insulating overcoat 33, and wire core 31 sets up in the inside of insulating overcoat 33, and it has silicon clay 32 to fill between wire core 31 and the insulating overcoat 33, and then has the flame retardant efficiency that further improves the underground cable through the inside packing at electrically conductive cable 3 has silicon clay 32 to wire core 31 separates through silicon clay 32, prevents that wire spare intertwine from causing the heat to pile up.
Evenly be provided with the draw-in groove on the outside periphery of elasticity ring 14, and all the joint has water-absorbing rubber 141 in the draw-in groove of elasticity ring 14, and then through setting up the draw-in groove on the outside periphery of elasticity ring 14 to through all the joint have water-absorbing rubber 141 and then utilize the good hydroscopicity of water-absorbing rubber in the draw-in groove, further improve underground cable's water-blocking nature.
The metal belt 12 is formed by weaving a plurality of strands of galvanized steel wires, and the metal belt 12 is provided with a multilayer structure, so that the metal belt 12 formed by weaving the plurality of strands of galvanized steel wires can improve the tensile strength of the metal belt 12 and the strength of an underground cable, and meanwhile, the surface of the steel wires are galvanized to improve the oxidizability of the steel wires. The working principle is as follows: the utility model discloses a through set gradually first sheath 1, second sheath 2 and electrically conductive cable 3 from outside to inside, carry out fire protection to electrically conductive cable 3 through second sheath 2, improve electrically conductive cable 3 fire safety nature, protect second sheath 2 and electrically conductive cable 3 through first sheath 1, improve the protectiveness of underground cable, slow down the ageing of line body, improve the life of line body, through elastic ring 14, rubber sleeve 13, strap 12 and silica gel cover 11 that set gradually from inside to outside on first sheath 1, support rubber sleeve 13, strap 12 and silica gel cover 11 through elastic ring 14, prevent to produce the influence to electrically conductive cable 3 when the cable receives great external pressure, utilize strap 12 to improve the tensile strength of bottom line wire simultaneously, silica gel cover 11 texture softness temperature toleration and chemical stability can protect underground cable simultaneously, the fire prevention mud 22 that fills in second sheath 2 braided cover 21 has fire-retardant function, the wires are prevented from being ignited mutually, and the silica gel cement 32 is filled in the conductive cable 3 to further improve the flame retardant effect of the underground cable.
The device obtained through the design can basically meet the requirement that the cable can be isolated from an external protective film, the protective film cannot ignite once the cable catches fire, meanwhile, the protective film can protect the surface of the underground cable, the protective performance is improved, underground substances are reduced, the aging of the cable body is accelerated, and the service life of the cable body is prolonged.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A high fire resistance underground cable comprising a first sheath (1), a second sheath (2) and an electrically conductive cable (3), characterized in that: a second sheath (2) is arranged in the first sheath (1), a conductive cable (3) is arranged in the second sheath (2), the second sheath (2) comprises a woven sleeve (21) and fireproof mud (22), a plurality of conductive cables (3) are uniformly distributed in the woven sleeve (21), and the woven sleeve (21) is filled with fireproof mud (22), the first sheath (1) comprises a silica gel sleeve (11), a metal belt (12), a rubber sleeve (13) and an elastic ring (14), the elastic ring (14) is sleeved on the outer side of the second sheath (2), and a plurality of elastic rings (14) are arranged along the axial direction of the second sheath (2), the rubber sleeve (13) is sleeved on the outer side of the elastic rings (14), and the outer side of the rubber sleeve (13) is sleeved with a metal belt (12), and the silica gel sleeve (11) is sleeved on the outer circumferential surface of the metal belt (12).
2. An underground cable with high fire resistance according to claim 1, wherein a plurality of copper wires (111) are uniformly distributed in the silica gel sleeve (11), and the copper wires (111) are uniformly arranged along the axial direction of the silica gel sleeve (11).
3. A highly fire-resistant underground cable according to claim 2, wherein the conductive cable (3) comprises a conductor core (31) and an insulating sheath (33), the conductor core (31) is disposed inside the insulating sheath (33), and silica gel cement (32) is filled between the conductor core (31) and the insulating sheath (33).
4. A highly fire-resistant underground cable according to claim 3, wherein the outer circumferential surface of the elastic ring (14) is uniformly provided with slots, and the slots of the elastic ring (14) are all clamped with water-absorbing rubber (141).
5. A highly fire-resistant underground cable according to any one of claims 1 to 4, characterized in that the metal tape (12) is woven from a plurality of strands of galvanized steel wires, and the metal tape (12) is provided with a multilayer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311283.6U CN209929026U (en) | 2019-08-14 | 2019-08-14 | High-fire-resistance underground cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311283.6U CN209929026U (en) | 2019-08-14 | 2019-08-14 | High-fire-resistance underground cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209929026U true CN209929026U (en) | 2020-01-10 |
Family
ID=69094305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921311283.6U Expired - Fee Related CN209929026U (en) | 2019-08-14 | 2019-08-14 | High-fire-resistance underground cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209929026U (en) |
-
2019
- 2019-08-14 CN CN201921311283.6U patent/CN209929026U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200110 |