CN112467680A - Novel cable joint explosion-proof box - Google Patents
Novel cable joint explosion-proof box Download PDFInfo
- Publication number
- CN112467680A CN112467680A CN202011437902.3A CN202011437902A CN112467680A CN 112467680 A CN112467680 A CN 112467680A CN 202011437902 A CN202011437902 A CN 202011437902A CN 112467680 A CN112467680 A CN 112467680A
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- shell
- explosion
- proof box
- fire extinguishing
- 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
- 239000003292 glue Substances 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 15
- 229920000098 polyolefin Polymers 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000009970 fire resistant effect Effects 0.000 claims description 5
- 239000012528 membrane Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 230000009172 bursting Effects 0.000 claims 1
- 238000004880 explosion Methods 0.000 abstract description 16
- 230000002265 prevention Effects 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 101100279442 Caenorhabditis elegans egg-6 gene Proteins 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 206010000369 Accident Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 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 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/03—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Cable Accessories (AREA)
Abstract
The invention provides a novel cable joint explosion-proof box, which comprises: the fire extinguishing device comprises a shell, a ceramic polyolefin inner layer, a high-strength fiber layer, a pressure relief hole, a pressure relief cover plate, a fire extinguishing egg, a shell glue filling opening and a shell fastening device; the shell is of an upper and lower bivalve combined structure, two sides of the shell are in a contracted state, the upper and lower shells wrap and clamp the cable, shell fastening devices are arranged at clamping positions of the two sides, a pressure relief hole and a shell glue filling opening are formed in the shell, and a pressure relief cover plate is arranged below the pressure relief hole; the outer layer of the cable is sequentially wrapped with a high-strength ceramic polyolefin inner layer and a high-strength fiber layer. When the explosion-proof box is used, when the internal pressure of the explosion-proof box is too high, internal gas is discharged through the pressure relief hole, the explosion-proof box automatically relieves pressure, the fire extinguishing egg can instantly and automatically start to extinguish the fire, and the temperature of a large amount of heat released by explosion is reduced in the fire extinguishing process, so that the purposes of extinguishing the fire and reducing the temperature are achieved, the explosion-proof box has the functions of automatic pressure relief, explosion prevention, fire extinguishment and water prevention, and the loss and the damage of accidents are greatly reduced.
Description
Technical Field
The invention relates to the technical field of distribution protection, in particular to a novel cable joint explosion-proof box.
Background
High tension cable intermediate head is when producing the spark, the product if not wholly sealed good, there is the air flow in the shell, will be nature and then cause the explosion, make great cable fire accident, high tension cable connects all to adopt the copper at present, there is not tensile bending effect, electric arc of several thousand degrees when taking place to puncture the trouble in the copper shell leads to insulating material gasification in the copper shell atmospheric pressure in the twinkling of an eye huge high, lead to the copper shell to explode, cause serious threat to closing on cable run and operation maintainer, especially overhead and cable hybrid line generally all adorn reclosing, can take place the coincidence when cable connects the accident, very easily cause the fire accident. The glass fiber reinforced plastic cable joint protection device has low manufacturing cost and temperature resistance below 180 ℃ generally. Waterproof glue, if the stirring is not good, can't reach sealed waterproof effect. Often there is ponding, can not reach fire prevention explosion-proof effect, when the explosion takes place in the middle of the cable joint. The glass fiber reinforced plastic can be burnt and splashed, and the waterproof glue can be burnt under the condition that the cable joint is exploded. Therefore, adopt novel material and optimize structural design, avoid accidents such as cable joint box emergence explosion, become the problem that people await a urgent need to solve.
Disclosure of Invention
In order to solve the problems, the invention provides a novel cable joint explosion-proof box.
The technical scheme provided by the invention is as follows: a novel explosion-proof box of cable joint, includes: the fire extinguishing device comprises a shell, a ceramic polyolefin inner layer, a high-strength fiber layer, a pressure relief hole, a pressure relief cover plate, a fire extinguishing egg, a shell glue filling opening and a shell fastening device;
the shell is of an upper and lower bivalve combined structure, two sides of the shell are in a contracted state, the upper and lower shells wrap and clamp the cable, shell fastening devices are arranged at clamping positions of the two sides, a pressure relief hole and a shell glue filling opening are formed in the shell, and a pressure relief cover plate is arranged below the pressure relief hole;
the fire extinguishing egg is of a hollow spherical structure, and fire extinguishing materials are arranged in the fire extinguishing egg;
the outer layer of the cable is sequentially wrapped with a fire extinguishing egg, a high-strength ceramic polyolefin inner layer and a high-strength fiber layer.
Preferably, the upper and lower halves of the housing clamp the cable, and the clamping position of the housing is fastened through a bolt.
Further preferably, the housing fastening means is secured by a locking ring.
Preferably, the fire-resistant epoxy resin glue is injected into the glue filling port of the shell, so that the ceramic polyolefin inner layer and the high-strength fiber layer are fixed.
Preferably, the upper and lower petals of the shell are provided with three pressure relief holes, and a pressure relief cover plate is arranged below each pressure relief hole.
Preferably, an explosion-proof membrane is arranged below the pressure relief hole.
Further preferably, waterproof sealing rings are arranged in the contact positions of the clamping positions of the two sides of the shell and the cable.
Compared with the prior art, the invention has the following beneficial effects:
the invention has simple structure section, convenient operation and good reliability, and the ceramic polyolefin inner layer has the advantages of no magnetism, good elasticity, corrosion resistance, high strength and excellent shock resistance, the high-strength fiber layer can absorb the explosion impact force of the part, the shock absorption and the fire prevention are realized, when the internal pressure of the explosion-proof box is too high, the internal gas breaks through the explosion-proof film and is discharged through the pressure relief hole, so that the automatic pressure relief of the explosion-proof box is realized, the explosion of the explosion-proof box due to the too high internal pressure when a cable joint breaks down is avoided, the fire extinguishing egg can instantly and automatically start to extinguish the fire, and the flame is extinguished, and a large amount of heat released by explosion is diluted in the process of fire extinguishing, the temperature of the large amount of heat released by explosion is reduced, the purposes of fire extinguishing and temperature reduction are achieved, and can effectively prevent fire and toxic smoke from spreading all around, has the functions of automatic pressure relief, explosion prevention, fire extinguishment and water prevention, and greatly reduces the loss and harm of accidents.
Drawings
Fig. 1 is a schematic structural diagram of a novel cable joint explosion-proof box provided by the invention;
fig. 2 is a schematic view of an internal cross-sectional structure of the novel cable joint explosion-proof box provided by the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the present embodiment provides a novel cable joint explosion-proof box, including: the fire extinguishing device comprises a shell 1, a ceramic polyolefin inner layer 2, a high-strength fiber layer 3, a pressure relief hole 4, a pressure relief cover plate 5, a fire extinguishing egg 6, a shell glue filling opening 7 and a shell fastening device 8;
the cable comprises a shell 1, a cable body, a shell fastening device (8), a shell glue filling opening 7, a pressure relief hole 4 and a shell glue filling opening 7, wherein the shell 1 is of an upper and lower double-flap combined structure, two sides of the shell 1 are in a contraction state, the upper and lower shells 1 wrap and clamp the cable, the clamping positions of the two sides are provided with the shell fastening device (8), the shell 1 is provided with the pressure relief hole 4 and the shell glue filling opening 7;
the fire extinguishing egg 6 is of a hollow spherical structure, and fire extinguishing materials are arranged in the fire extinguishing egg 6;
the outer layer of the cable is sequentially wrapped with a fire extinguishing egg 6, a high-strength ceramic polyolefin inner layer 2 and a high-strength fiber layer 3.
Preferably, the upper and lower halves of the housing 1 clamp the cable, and the clamped part of the housing 1 is fastened by a bolt.
Further preferably, the housing fastening means 8 is fixed by a locking ring 9.
Preferably, the fire-resistant epoxy resin glue is injected into the glue filling opening 7 of the shell, so that the ceramic polyolefin inner layer 2 and the high-strength fiber layer 3 are fixed to play a role in sealing and fire resistance.
Preferably, the upper and lower petals of the shell 1 are provided with three pressure relief holes 4, and a pressure relief cover plate 5 is arranged below each pressure relief hole 4.
Preferably, an explosion-proof membrane is arranged below the pressure relief hole 4, and when the internal pressure is too high, the internal gas breaks through the explosion-proof membrane and is discharged through the pressure relief hole 4.
Further preferably, waterproof sealing rings 10 are arranged in the contact positions of the clamping positions of the two sides of the shell 1 and the cable.
The working principle of the invention is as follows:
the shell body is made of a horizontal continuous casting copper-aluminum composite material, and has no magnetism, good elasticity, corrosion resistance, high strength and excellent impact resistance, the ceramic polyolefin inner layer 2 inside the shell body is made of a ceramic polyolefin material, and is fire-resistant and flame-retardant, the high-strength fiber layer 3 woven outside the shell body is made of a high-strength carbon fiber wire material, the strength of the carbon fiber can reach 2600MPa, the inner-layer elastic material can absorb part of explosion impact force, and is shock-absorbing and fireproof, the shell body 1 is provided with a shell body glue filling opening 7, and fire-resistant epoxy resin glue is injected to solidify the carbon fiber wire and the ceramic polyolefin structure and play a role in sealing and; when the internal pressure is too high, the internal gas breaks through the explosion-proof membrane and is discharged through the pressure relief hole 4, so that the automatic pressure relief of the explosion-proof box is realized, and the explosion of the explosion-proof box due to the too high internal pressure when a cable fails is avoided; when the cable joint is exploded and ignited, the decompression cover plate 5 is flicked to decompress and rebound at the same time, the built-in fire extinguishing egg 6 starts to extinguish fire, the fire extinguishing egg 6 can automatically start to extinguish fire under the condition of a set temperature value or 170 ℃, so that flame is extinguished, a large amount of heat released by explosion is diluted in the fire extinguishing process, the temperature of a large amount of heat released by explosion is reduced, the purposes of extinguishing fire and reducing temperature are achieved, and the fire and toxic smoke can be effectively prevented from spreading to the periphery; meanwhile, the fire extinguishing gas can be remained in the cavity of the explosion-proof box, so that the cable joint area is isolated from the outside, and the reignition of explosion ignition points is prevented. The problem of the damage of splashing of the object that the explosion produced is solved, reduce the gas temperature of spun by a wide margin, blockked the injury of high temperature electric arc to the person and other equipment, thoroughly isolated electric arc, high temperature, the injury of high-speed article.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It is to be understood that the present invention is not limited to what has been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (7)
1. A novel cable joint explosion-proof box is characterized by comprising: the fire extinguishing device comprises a shell (1), a ceramic polyolefin inner layer (2), a high-strength fiber layer (3), a pressure relief hole (4), a pressure relief cover plate (5), a fire extinguishing egg (6), a shell glue filling opening (7) and a shell fastening device (8);
the cable is wrapped and clamped by the upper and lower shells (1), shell fastening devices (8) are arranged at clamping positions of the two sides, a pressure relief hole (4) and a shell glue filling opening (7) are formed in the shells (1), and a pressure relief cover plate (5) is arranged below the pressure relief hole (4);
the fire extinguishing egg (6) is of a hollow spherical structure, and fire extinguishing materials are arranged in the fire extinguishing egg (6);
the outer layer of the cable is sequentially wrapped with a fire extinguishing egg (6), a high-strength ceramic polyolefin inner layer (2) and a high-strength fiber layer (3).
2. A novel cable joint explosion-proof box according to claim 1, characterized in that the upper and lower halves of the housing (1) clamp the cable, and the clamping position of the housing (1) is fastened by bolts.
3. A novel cable joint bursting disc as claimed in claim 1 in which the casing fastening means (8) is secured by a locking ring (9).
4. The novel cable joint explosion-proof box as claimed in claim 1, wherein the fire-resistant epoxy resin glue is injected at the glue filling opening (7) of the outer shell to fix the ceramic polyolefin inner layer (2) and the high-strength fiber layer (3).
5. The novel cable joint explosion-proof box as claimed in claim 1, characterized in that the upper and lower halves of the housing (1) are provided with three pressure relief holes (4), and a pressure relief cover plate (5) is provided under each pressure relief hole (4).
6. The novel cable joint explosion-proof box as claimed in claim 1, characterized in that a layer of explosion-proof membrane is arranged under the pressure relief hole (4).
7. The novel cable joint explosion-proof box as claimed in claim 1, characterized in that waterproof sealing rings (10) are arranged in the contact positions of the clamping positions of the two sides of the shell (1) and the cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011437902.3A CN112467680A (en) | 2020-12-07 | 2020-12-07 | Novel cable joint explosion-proof box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011437902.3A CN112467680A (en) | 2020-12-07 | 2020-12-07 | Novel cable joint explosion-proof box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112467680A true CN112467680A (en) | 2021-03-09 |
Family
ID=74800507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011437902.3A Pending CN112467680A (en) | 2020-12-07 | 2020-12-07 | Novel cable joint explosion-proof box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112467680A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078607A (en) * | 2021-05-08 | 2021-07-06 | 国网湖南省电力有限公司 | Medium-voltage cable intermediate joint protection device for cable channel and application method thereof |
| CN113241720A (en) * | 2021-05-13 | 2021-08-10 | 特变电工昭和（山东）电缆附件有限公司 | Explosion-proof device for high-voltage cable intermediate joint and use method thereof |
-
2020
- 2020-12-07 CN CN202011437902.3A patent/CN112467680A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078607A (en) * | 2021-05-08 | 2021-07-06 | 国网湖南省电力有限公司 | Medium-voltage cable intermediate joint protection device for cable channel and application method thereof |
| CN113241720A (en) * | 2021-05-13 | 2021-08-10 | 特变电工昭和（山东）电缆附件有限公司 | Explosion-proof device for high-voltage cable intermediate joint and use method thereof |
| CN113241720B (en) * | 2021-05-13 | 2023-03-24 | 特变电工昭和（山东）电缆附件有限公司 | Explosion-proof device for high-voltage cable intermediate joint and use method thereof |
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