CN109087738B - Fire-resistant cable - Google Patents
Fire-resistant cable Download PDFInfo
- Publication number
- CN109087738B CN109087738B CN201810965762.3A CN201810965762A CN109087738B CN 109087738 B CN109087738 B CN 109087738B CN 201810965762 A CN201810965762 A CN 201810965762A CN 109087738 B CN109087738 B CN 109087738B
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- CN
- China
- Prior art keywords
- cable
- shell
- fire
- concave hole
- air bag
- 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.)
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- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 13
- 238000009434 installation Methods 0.000 claims abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 12
- 239000003292 glue Substances 0.000 claims description 8
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 6
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 235000019359 magnesium stearate Nutrition 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
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
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a fire-resistant cable which comprises a cable outer tegument, wherein the cable outer tegument comprises a first shell and a second shell, the first shell and the second shell form a circular cable outer tegument structure, an installation cavity is arranged inside the cable outer tegument, a cable core is installed in the installation cavity, two sides of the outer wall of the cable core are respectively wrapped with an air bag cushion with an arch structure, an air storage cavity is arranged in the middle of each air bag cushion, air is stored in the air storage cavity, and one end of an arc convex surface of each air bag cushion is in contact with the inner wall of the cable outer tegument. The fire-resistant cable is simple in structure, the first shell and the second shell can be jacked open by the expansion of the air bag cushion after the heat reaches a certain degree, so that the cable core is exposed and communicated with outside air flow, the aim of quickly dissipating heat is further fulfilled, and meanwhile, once the fire-resistant cable is jacked open, a fire extinguishing agent can enter the inner part of the outer tegument of the cable, so that the fire can be extinguished at the first time if a fire source exists, and the fire-resistant cable is safer to use.
Description
Technical Field
The invention relates to the field of cables, in particular to a fire-resistant cable.
Background
The cables are visible everywhere in daily production and life, and a large number of cables are usually intensively paved in cable ducts in power plants, factories and laboratories so as to facilitate wiring, maintenance and attractiveness. With the increase of the dependence of people on electricity, more and more cables are arranged in the cable trench, and the cable trench is longer and longer. The occurrence probability of fire accidents is correspondingly increased, once a cable is in a fire, large-area cable burning is caused, production cannot be recovered in a short time, and economic loss is serious, so that the safety protection of the cable becomes a considerable problem. Consequently, when the cable temperature reached certain critical value, must cool down it, otherwise continuously heat up and can lead to generating heat to catch fire, and then lead to the cable to burn out, present cable structure that has the temperature detection function, it all has the function of monitoring to do not possess the function of putting out a fire the very first time, the subassembly structure of monitoring is complicated moreover, greatly increased the use cost of cable.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fire-resistant cable, which is used for observing whether the cable has an over-high temperature condition or not in the simplest and most intuitive mode, can be observed by naked eyes in a naked part in a direct view mode, can be opened automatically to dissipate heat if the temperature exceeds a critical temperature value, has an emergency fireproof function and can effectively solve the defects in the prior art.
The invention is realized by the following technical scheme: the utility model provides a fire-resistant cable, includes the outer tegillum of cable, and the outer tegillum of cable includes first casing and second casing, a circular shape outer tegillum structure of cable is constituteed to first casing and second casing, the inside installation cavity that has of outer tegillum of cable, an installation cavity installation cable core in, an domes of an arch structure is respectively wrapped up in the outer wall both sides of cable core's gasbag pad, the centre of gasbag pad has a gas storage chamber, and gas storage in the gas storage chamber, the arc convex surface one end of gasbag pad and the contact of the outer tegillum inner wall of cable, and the medial extremity of gasbag pad is an arc concave surface, and it is fixed with cable core outer wall beat to glue, the open end of first casing and second casing assembles each other, and its open end is.
As preferred technical scheme, the subassembly of putting out a fire is including seting up the more than one shrinkage pool on the second casing terminal surface, all packs fire extinguishing agent in every shrinkage pool, the shrinkage pool is relative first casing one end opening, and the open end is sealed through first casing.
As preferred technical scheme, a sealed piston is packed into in the shrinkage pool, and sealed piston sets up in the bottommost of shrinkage pool, and the outside end of sealed piston inserts and sets up a pull pole, and the other end of pull pole inserts inside first opening terminal surface, and the pull pole is the metal or the plastics pole of a stereoplasm.
According to the preferable technical scheme, an elastic piece is arranged on one side, opposite to the bottom surface of the concave hole, of the inner side end of the sealing piston, the elastic piece is an elastic belt, one end of the elastic belt is embedded into the sealing piston and sealed by glue, and the other end of the elastic belt is embedded into the bottom surface of the concave hole and fixed by glue.
According to a preferable technical scheme, the fire extinguishing agent is fire extinguishing dry powder, and the main components of the dry powder fire extinguishing agent are sodium bicarbonate and a small amount of moisture-proof agents, namely magnesium stearate and talcum powder.
Preferably, the end surface of the second housing is provided with a positioning convex portion, the end surface of the first housing is provided with a positioning concave portion, and the positioning convex portion is positioned and fitted in the positioning concave portion.
The invention has the beneficial effects that: firstly, the invention adopts a very simple structure, when the temperature of the cable rises too fast, the air bag cushion expands, so that the outer tegument layer of the whole cable is pushed open, and the user can visually observe whether the temperature of the cable is too high or not;
secondly, because the outer tegument layer of the cable is jacked open, the inner cable core can be directly contacted with the air, and thus the heat dissipation performance of the cable core can be improved;
and thirdly, because the outer tegument layer of the cable is formed by splicing the first shell and the second shell, after the cable is heated and jacked open, the extinguishing dry powder in the second shell can be pulled out by the sealing piston, and then the dry powder is covered outside the cable core, so that the cable core is prevented from being ignited.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the fire suppression assembly of the present invention.
Detailed Description
As shown in fig. 1, the fire-resistant cable comprises a cable outer layer, wherein the cable outer layer comprises a first shell 3 and a second shell 6, and the first shell 3 and the second shell 6 form a circular cable outer layer structure;
the cable exterior tegument is inside to have a mounting cavity, a cable core 7 of installation intracavity, an domes structure's gasbag pad 2 is respectively wrapped up to the outer wall both sides of cable core 7, gasbag pad 2's centre has a gas storage chamber 1, gas storage in the gas storage chamber 1, gasbag pad 2's arc convex surface one end and the contact of cable exterior tegument inner wall, gasbag pad 2's medial extremity is an arc concave surface, it is fixed with cable core outer wall is beaten to glue, first casing 3 assembles mutually with the open end of second casing 6, its open end is provided with a subassembly of putting out a fire.
As shown in fig. 2, the subassembly of putting out a fire is including seting up more than one shrinkage pool 4 on the 6 terminal surfaces of second casing, all pack the fire extinguishing agent in every shrinkage pool 4, 3 one end openings of shrinkage pool 4 first casing relatively, the open end is sealed through first casing 3, a sealed piston 5 of packing into in the shrinkage pool 4, sealed piston 5 sets up in the bottommost of shrinkage pool 4, the outside end of sealed piston 5 inserts and sets up a pull pole 8, the other end of pull pole 8 inserts inside first opening terminal surface, pull pole 8 is the metal or the plastics pole of a stereoplasm. Because when under natural state, the shrinkage pool outside end is through sealed with first casing, and consequently inside fire extinguishing agent is sealed, when the cable core heat is very high, makes the gasbag pad inflation, and then backs down first, second casing for sealed piston removes in the shrinkage pool, and then utilizes sealed piston to pull out the fire extinguishing agent of shrinkage pool inside, and the fire extinguishing agent of pulling out can drop on the cable core, effectively plays fire-retardant effect. Because the outer tegument of the cable is pushed open, the cable core is directly contacted with the air, and then the heat dissipation speed can be increased, and the rapid cooling can be achieved.
In this embodiment, an elastic member 9 is disposed on one side of the inner side end of the sealing piston, which is opposite to the bottom surface of the concave hole, the elastic member 9 is an elastic band, one end of the elastic band is embedded into the sealing piston and sealed by glue, the other end of the elastic band is embedded into the bottom surface of the concave hole and fixed by glue, and the elastic band can utilize elastic force after being ejected, so that the first and second shells are integrated into a circular sealing structure again.
In the embodiment, the fire extinguishing agent adopts fire extinguishing dry powder, and the main components of the dry powder fire extinguishing agent are sodium bicarbonate and a small amount of moisture-proof agents, namely magnesium stearate and talcum powder. The invention adopts a commonly used dry powder for fire extinguishing, when the cable core has an ignition point, the temperature of the cable core is necessarily high, and the pulled dry powder can effectively realize fire extinguishing or prevent the fire source from spreading.
Wherein, the end surface of the second shell 6 is provided with a positioning convex part 11, the end surface of the first shell 3 is provided with a positioning concave part, and the positioning convex part 11 is positioned and arranged in the positioning concave part. First casing 3 and second casing 6 are the positioning of assembling each other, and even can separate when the temperature is very high, consequently split type structure can make both separation and switch on with the outside air, realizes rapid cooling.
The invention has the beneficial effects that: firstly, the invention adopts a very simple structure, when the temperature of the cable rises too fast, the air bag cushion expands, so that the outer tegument layer of the whole cable is pushed open, and the user can visually observe whether the temperature of the cable is too high or not;
secondly, because the outer tegument layer of the cable is jacked open, the inner cable core can be directly contacted with the air, and thus the heat dissipation performance of the cable core can be improved;
and thirdly, because the outer tegument layer of the cable is formed by splicing the first shell and the second shell, after the cable is heated and jacked open, the extinguishing dry powder in the second shell can be pulled out by the sealing piston, and then the dry powder is covered outside the cable core, so that the cable core is prevented from being ignited.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (3)
1. A fire resistant cable, characterized by: the cable outer tegument comprises a cable outer tegument, wherein the cable outer tegument comprises a first shell and a second shell, the first shell and the second shell form a circular cable outer tegument structure, an installation cavity is formed inside the cable outer tegument, a cable core is installed in the installation cavity, two sides of the outer wall of the cable core are respectively wrapped with an air bag cushion in an arch structure, the middle of each air bag cushion is provided with an air storage cavity, air is stored in the air storage cavity, one end of an arc convex surface of each air bag cushion is in contact with the inner wall of the cable outer tegument, the inner side end of each air bag cushion is an arc concave surface and is glued and fixed with the outer wall of the cable core, the open ends of the first shell and the second;
the fire extinguishing assembly comprises more than one concave hole formed in the end face of the second shell, fire extinguishing agent is filled in each concave hole, the concave hole is opened relative to one end of the first shell, and the opened end of the concave hole is sealed through the first shell;
a sealing piston is arranged in the concave hole, the sealing piston is arranged at the bottommost end of the concave hole, a pull rod is inserted into the outer side end of the sealing piston, the other end of the pull rod is inserted into the inner part of the end face of the first opening, and the pull rod is a hard metal or plastic rod;
the elastic piece is arranged on one side, opposite to the bottom surface of the concave hole, of the inner side end of the sealing piston and is an elastic belt, one end of the elastic belt is embedded into the sealing piston and is sealed by glue, and the other end of the elastic belt is embedded into the bottom surface of the concave hole and is fixed by glue.
2. The fire resistant cable of claim 1, wherein: the fire extinguishing agent adopts fire extinguishing dry powder, and the main components of the dry powder fire extinguishing agent are sodium bicarbonate and a small amount of moisture-proof agents, namely magnesium stearate and talcum powder.
3. The fire resistant cable of claim 1, wherein: the end face of the second shell is provided with a positioning convex part, the end face of the first shell is provided with a positioning concave part, and the positioning convex part is positioned and installed in the positioning concave part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965762.3A CN109087738B (en) | 2018-08-23 | 2018-08-23 | Fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810965762.3A CN109087738B (en) | 2018-08-23 | 2018-08-23 | Fire-resistant cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109087738A CN109087738A (en) | 2018-12-25 |
| CN109087738B true CN109087738B (en) | 2020-01-24 |
Family
ID=64794203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810965762.3A Active CN109087738B (en) | 2018-08-23 | 2018-08-23 | Fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109087738B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109817377B (en) * | 2019-03-20 | 2020-06-19 | 济南马世基智能环保科技有限公司 | Composite cable |
| CN109994276B (en) * | 2019-04-18 | 2020-03-13 | 重庆渝丰电线电缆有限公司 | Automobile non-shielded high-voltage ignition cable with temperature sensing and alarming functions |
| CN110444331B (en) * | 2019-08-19 | 2020-10-16 | 浙江华普电缆有限公司 | Composite fireproof cable |
| CN111477390A (en) * | 2020-04-21 | 2020-07-31 | 卢文杰 | Fireproof cable |
| CN113130128B (en) * | 2021-04-16 | 2022-08-23 | 上海永进电缆(集团)有限公司 | Flame-retardant fire-resistant anti-radiation cable for nuclear power station |
| CN113488259B (en) * | 2021-07-19 | 2022-09-20 | 钟丽玲 | Underground cable |
| CN116386948B (en) * | 2023-04-10 | 2024-02-06 | 河南庆州电缆有限公司 | Composite cable with high heat dissipation efficiency |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19729395A1 (en) * | 1997-07-09 | 1999-01-14 | Siemens Ag | Cable with inner cable core of electrical and/or optical conductors |
| CN204834138U (en) * | 2015-06-05 | 2015-12-02 | 奉化市依龙电子有限公司 | Cable conductor of sinusoidal dc -to -ac converter |
| CN206489903U (en) * | 2016-11-25 | 2017-09-12 | 昆明昆缆龙源电线电缆有限公司 | A kind of high fire-retardance oxygen barrier layer fireproof power cable |
| CN107578851B (en) * | 2017-08-29 | 2019-04-30 | 嘉兴市天信电线有限公司 | A kind of flame retardant cable |
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2018
- 2018-08-23 CN CN201810965762.3A patent/CN109087738B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109087738A (en) | 2018-12-25 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
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Effective date of registration: 20191227 Address after: 201822 zone a, floor 1, building 3, No. 1328, Lixue Road, Malu Town, Jiading District, Shanghai Applicant after: SHANGHAI HUDA HI-TEMP WIRE CO., LTD. Address before: 322300 No. 358, Shang Ge Village, an Wen Town, Panan County, Jinhua, Zhejiang Applicant before: Chen Xiaojun |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |