CN209674951U - A kind of fire prevention low-voltage cable with temp sensing function - Google Patents
A kind of fire prevention low-voltage cable with temp sensing function Download PDFInfo
- Publication number
- CN209674951U CN209674951U CN201920757479.1U CN201920757479U CN209674951U CN 209674951 U CN209674951 U CN 209674951U CN 201920757479 U CN201920757479 U CN 201920757479U CN 209674951 U CN209674951 U CN 209674951U
- Authority
- CN
- China
- Prior art keywords
- layer
- cable
- fire prevention
- voltage cable
- sensing function
- 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.)
- Active
Links
Landscapes
- Insulated Conductors (AREA)
- Communication Cables (AREA)
Abstract
The utility model discloses a kind of fire prevention low-voltage cable with temp sensing function, including cable core, filled layer, fireprotection layer and the external sheath layer set gradually from the inside to the outside；The cable core successively includes temperature-measuring optical fiber, fiber optic protection layer of optical cable, conductor wire sandwich layer and insulating layer from the inside to the outside, and the fiber optic protection layer of optical cable is corrugated copper tube；The fireprotection layer successively includes wrapped fireprotection layer, squeezes out fireprotection layer and metal sheath layer from the inside to the outside, and the wrapped fireprotection layer is ceramic silicone band on filled layer.The utility model can real-time and accurately monitor the temperature of low-voltage cable, while cable covering has the ability of very strong fire protection flame retarding, can prevent high temperature or short-circuit conditions from issuing calamity of lighting a fire.
Description
Technical field
The utility model relates to the technical fields of low-voltage cable, and in particular to be a kind of fire prevention low pressure with temp sensing function
Cable.
Background technique
With the development of China's economic strength, the continuous growth of electricity needs, the carrier that cable is transmitted as electric energy is not only
The power demand that only meet people, with greater need for safe and reliable, environmentally friendly.
Due to cable operating temperature by environment and load real-time change, devise intelligent temperature measurement cable, can supervise
The temperature of electric control cable is with the operating condition of feedback cable, but most of cable for measuring temperature is placed in cable using temperature-measuring optical fiber at present
In the packing material or insulating layer in portion, there is delay in measurement process, cannot real-time and accurately feedback cable operating condition.
Conventional low cable almost all using organic plastics as insulator, insulation performance it is influenced by ambient temperature compared with
Greatly, as being in the biggish environment of the temperature difference for a long time, insulating layer easily season cracking, there are larger security risks；And plastics have
Machine object is combustibles, and in high temperature or short-circuit conditions fire, and the gas discharged is larger, influences people's life security.
Utility model content
In order to overcome above-mentioned low-voltage cable to be difficult to monitor in real time the insulating layer of cable temperature and cable Yi Fasheng due to aging
The technological deficiency of fire, the utility model provide a kind of fire prevention low-voltage cable with temp sensing function, can real-time and accurately supervise
The temperature of low-voltage cable is controlled, while cable covering has the ability of very strong fire protection flame retarding, can prevent high temperature or short-circuit conditions
Issue calamity of lighting a fire.
To solve the above-mentioned problems, the utility model is achieved by following technical scheme:
A kind of fire prevention low-voltage cable with temp sensing function described in the utility model, including the cable set gradually from the inside to the outside
Core, filled layer, fireprotection layer and external sheath layer；
The cable core successively includes temperature-measuring optical fiber, fiber optic protection layer of optical cable, conductor wire sandwich layer and insulating layer, the light from the inside to the outside
Fine protective layer is corrugated copper tube；
The fireprotection layer successively includes wrapped fireprotection layer, squeezes out fireprotection layer and metal sheath layer from the inside to the outside, described wrapped
Fireprotection layer is ceramic silicone band on filled layer.
Further, the extrusion fireprotection layer is that ceramic polyolefin or Ceramic silicon rubber pass through extruding machine or rubber extruding machine
It squeezes out on wrapped fireprotection layer.
Further, the metal sheath layer is wrinkle stainless steel tube.
Further, the conductor wire sandwich layer is that oxygen-free copper bar is stranded in fiber optic protection layer of optical cable.
Further, the cross section of the oxygen-free copper bar is trapezoidal or Z-shaped.
Further, the insulating layer is made of crosslinked polyethylene.
Further, the filled layer is flame retardant type gasket for packing.
Further, the external sheath layer is made of high flame resistance, low smoke halogen-free polyolefin protective cover material.
Compared with prior art, the utility model has the beneficial effects that
1. be provided with temperature-measuring optical fiber in the cable core conductor inside of low-voltage cable, using corrugated copper tube by conductor wire core and survey
Warm Fiber isolation can avoid temperature-measuring optical fiber and destroy because conductor wire core is twisted, while the thermal coefficient of copper pipe is higher, can will be conductive
The heat that core generates quickly is transferred to temperature-measuring optical fiber, the actual temperature that can be accurately detected in low-voltage cable electricity transmission process,
So as to adjust the load of low-voltage cable, power consumption caused by temperature is excessively high due to load is excessive is avoided, it is defeated to improve low-voltage cable
Electrical efficiency.
2. the insulating jacket layer in low-voltage cable is internally provided with fireprotection layer, which is formed using a variety of fire proofing materials
Multi-layer fireproofing structure can avoid cable because of high temperature or short so that the extexine of low-voltage cable has stronger fire protection flame retarding ability
Road and burn cable surface layer.Fireprotection layer includes using ceramic silicone band wrapped, and crust is at heavily fortified point at a high temperature of 350 DEG C or more
Hard protective layer can prevent flame from burning internal conductor wire core, guarantee that the normal electric power of low-voltage cable inner conductive core passes
It is defeated.
Detailed description of the invention
Specific embodiment of the present utility model is described in further detail with reference to the accompanying drawing, in which:
Fig. 1 is a kind of structural schematic diagram of fire prevention low-voltage cable with temp sensing function of the utility model；
In figure: 11- temperature-measuring optical fiber；12- fiber optic protection layer of optical cable；13- conductor wire sandwich layer；14- insulating layer；2- filled layer；3- is anti-
Fire bed；The wrapped fireprotection layer of 31-；32- squeezes out fireprotection layer；33- metal sheath layer；4 external sheath layers.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
As shown in Figure 1, a kind of preferred structure of fire prevention low-voltage cable with temp sensing function described in the utility model.
The fire prevention low-voltage cable with temp sensing function includes the cable core set gradually from the inside to the outside, filled layer 2, fire prevention
Layer 3 and external sheath layer 4.
Wherein, the cable core quantity of the low-voltage cable is set as 1~5 according to existing low-voltage cable technology, the present embodiment
Preferably 5.The cable core successively includes temperature-measuring optical fiber 11, fiber optic protection layer of optical cable 12, conductor wire sandwich layer 13 and insulation from the inside to the outside
Layer 14 is stranded in formation conductor wire sandwich layer 13, the anaerobic in fiber optic protection layer of optical cable 12 using more oxygen-free copper bars with repeating multilayer
The cross section of copper bar is trapezoidal or Z-shaped, preferably trapezoidal oxygen-free copper bar, and the tightening factor of trapezoidal oxygen-free copper bar is high, it is possible to reduce
Gap in twisted between oxygen-free copper bar, makes 13 surface of the conductor wire sandwich layer more rounding to be formed, can reduce cable to insulating layer
Electric discharge, improve the service life of cable.
The fiber optic protection layer of optical cable 12 is corrugated copper tube, and conductor wire core and temperature-measuring optical fiber 11 are isolated, and can avoid setting and is leading
Temperature-measuring optical fiber 11 inside electric wire sandwich layer 13 is destroyed because conductor wire core is twisted, while the thermal coefficient of copper pipe is higher, can will lead
Temperature change caused by wire core is quickly transferred to temperature-measuring optical fiber 11, and the temperature-measuring optical fiber 11 is preferably that optical fiber distributed temperature passes
Sense technology can continuously detect the temperature information of tens km of cable, and wrong report is low with rate of failing to report, and electromagnetism interference, can be real
When the actual temperature that is accurately detected in low-voltage cable electricity transmission process avoid so as to adjust the load of low-voltage cable because of load
Excessive and power consumption caused by temperature is excessively high, improves low-voltage cable power transmission efficiency.
The insulating layer 14 is made of crosslinked polyethylene insulation material, by crosslinked polyethylene made of cross-linking modified PE
Layer has stronger environmental stress cracking resistance, corrosion resistance and high temperature resistance, and the cable core surface layer of low-voltage cable is protected to exempt from
By the destruction of high temperature or corrosive gas, guarantee cable core inner conductive core normal transmission electric power and temperature-measuring optical fiber 11 to conductor wire
The temp sensing function of core.
Wherein, the filled layer 2 is filled between cable core and cable core, cable core and fireprotection layer 3 using anti-flammability gasket for packing, is made
5 cable cores are stabilized in low-voltage cable inside, avoid the position moved or squeeze and change cable core in low-voltage cable use,
Anti-flammability filled layer 2 can prevent flame from spreading from the radial direction of cable simultaneously, and cable core is avoided to burn in a fire.
The fireprotection layer 3 successively includes wrapped fireprotection layer 31, squeezes out fireprotection layer 32 and metal sheath layer 33, institute from the inside to the outside
Stating wrapped fireprotection layer 31 is ceramic silicone band on filled layer 2, when using ceramic silicone band wrapped process, is made
Ceramic polyolefin or Ceramic silicon rubber are squeezed out on wrapped fireprotection layer 31 with extruding machine, is formed and squeezes out fireprotection layer 32, institute
It states wrapped fireprotection layer 31 and squeezes out fireprotection layer 32 and crust at a high temperature of 350 DEG C or more into hard ceramic protective layer, avoid fire
Flame is spread from the external sheath layer 4 of low-voltage cable to the longitudinal direction of cable core, realizes longitudinal flameproof protection of the cable core of low-voltage cable.It is described
Metal sheath layer 33 is wrinkle stainless steel tube, is preferably 304 stainless steel tubes, and fusing point is much higher than 1000 DEG C, wrinkle stainless steel
Pipe is socketed in the surface for squeezing out fireprotection layer 32, further prevents flame from longitudinally spreading from Exterior cable to cable core, guarantees that cable core exists
It is worked normally in high temperature or fire.
The external sheath layer 4 is made of high flame resistance, low smoke halogen-free polyolefin protective cover material, and external sheath layer 4 is difficult under high temperature environment
With spontaneous combustion, while 4 material of external sheath layer will not discharge halogen gas in aging or fire, it is ensured that staff normally goes out
Enter.
A kind of fire prevention low-voltage cable working principle with temp sensing function described in the utility model is: temperature-measuring optical fiber is pacified
It can be incited somebody to action mounted in the inside of conductor wire sandwich layer using the thermal coefficient of the copper pipe advantage high more than external packing material and insulating layer
Temperature change caused by conductor wire core is quickly transferred to temperature-measuring optical fiber by copper pipe, can real-time and accurately detect the reality of conductor wire core
Border temperature.The outside of conductor wire core is provided with fireprotection layer, which is wrapped fireprotection layer, squeezes out fireprotection layer and protective metal shell
Layer collectively constitutes, and so that low-voltage cable is had very strong longitudinal flameproof protection, it is ensured that electric current of the conductor wire core in high temperature or fire
The temperature monitoring of transmission and temperature-measuring optical fiber.
Described in the present embodiment it is a kind of with temp sensing function fire prevention low-voltage cable other structures referring to the prior art.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, therefore it is all without departing from the content of the technical scheme of the utility model, implement according to the technical essence of the utility model to above
Any modification, equivalent variations and modification, are still within the scope of the technical solutions of the present invention made by example.
Claims (8)
1. a kind of fire prevention low-voltage cable with temp sensing function, which is characterized in that including set gradually from the inside to the outside cable core, fill out
Fill layer, fireprotection layer and external sheath layer；
The cable core successively includes temperature-measuring optical fiber, fiber optic protection layer of optical cable, conductor wire sandwich layer and insulating layer from the inside to the outside, and the optical fiber is protected
Sheath is corrugated copper tube；
The fireprotection layer successively includes wrapped fireprotection layer, squeezes out fireprotection layer and metal sheath layer, the wrapped fire prevention from the inside to the outside
Layer is ceramic silicone band on filled layer.
2. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the extrusion fireprotection layer
It is squeezed out on wrapped fireprotection layer for ceramic polyolefin or Ceramic silicon rubber by extruding machine or rubber extruding machine.
3. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the metal sheath layer
For wrinkle stainless steel tube.
4. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the conductor wire sandwich layer
It is stranded in fiber optic protection layer of optical cable for oxygen-free copper bar.
5. the fire prevention low-voltage cable according to claim 4 with temp sensing function, which is characterized in that the oxygen-free copper bar
Cross section is trapezoidal or Z-shaped.
6. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the insulating layer is to hand over
Connection polyethylene is made.
7. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the filled layer is resistance
Combustion type gasket for packing.
8. the fire prevention low-voltage cable according to claim 1 with temp sensing function, which is characterized in that the external sheath layer is
High flame resistance, low smoke halogen-free polyolefin protective cover material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757479.1U CN209674951U (en) | 2019-05-23 | 2019-05-23 | A kind of fire prevention low-voltage cable with temp sensing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920757479.1U CN209674951U (en) | 2019-05-23 | 2019-05-23 | A kind of fire prevention low-voltage cable with temp sensing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209674951U true CN209674951U (en) | 2019-11-22 |
Family
ID=68575357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920757479.1U Active CN209674951U (en) | 2019-05-23 | 2019-05-23 | A kind of fire prevention low-voltage cable with temp sensing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209674951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484881A (en) * | 2020-10-28 | 2021-03-12 | 国网浙江省电力有限公司绍兴供电公司 | Intelligent interconnected flexible fireproof and explosion-proof monitoring system |
-
2019
- 2019-05-23 CN CN201920757479.1U patent/CN209674951U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112484881A (en) * | 2020-10-28 | 2021-03-12 | 国网浙江省电力有限公司绍兴供电公司 | Intelligent interconnected flexible fireproof and explosion-proof monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206639628U (en) | A kind of mineral insulation aluminium sheath flexible optical fibre composite fireproof cable | |
| CN209674951U (en) | A kind of fire prevention low-voltage cable with temp sensing function | |
| CN205050619U (en) | Add fever type aluminum alloy aerial [insulated] cable | |
| CN209674974U (en) | A kind of fire prevention MV shielded cable with temp sensing function | |
| CN201804582U (en) | High-temperature resistant cable | |
| CN204760074U (en) | Super flexible fireproof cable of chain armor metal covering of mica insulation protection | |
| CN109686483A (en) | The high-intensitive resistance to corrosion-resistant special cable of torsion of coastal Wind turbines | |
| CN202976895U (en) | Fire-proof single-core branch cable | |
| CN209183310U (en) | A kind of fireproof power cable of all fronts channel Temperature Measuring alarm | |
| CN209071042U (en) | A kind of high heat dispersion power cable | |
| CN205751680U (en) | A kind of crosslinked polyetylene insulated multicore flame retardant cable | |
| CN211828205U (en) | Tensile anti-breaking water conservancy cable | |
| CN204332535U (en) | A kind of flexible mineral fireproofing photoelectric composite rope | |
| CN210577698U (en) | Novel MPP power cable protection pipe sleeve | |
| CN210073397U (en) | High temperature resistant type compensating conductor | |
| CN201758464U (en) | Tape-shaped carbon fiber heating cable | |
| CN208752998U (en) | A kind of heat insulation type flexible mineral insulation fireproof cable | |
| CN105913959A (en) | Crosslinked polyethylene insulated multi-core flame retardant cable | |
| CN206282644U (en) | A kind of fireproof power cable | |
| CN205827978U (en) | Aluminium alloy conductor is pressed fire-resisting cable | |
| CN208400552U (en) | A kind of ultraviolet ray-resistance type high life cable | |
| CN210295999U (en) | Electric wire with fire resistance | |
| CN209708702U (en) | A kind of direct current high voltage cable | |
| CN213123862U (en) | Environment-friendly cable structure | |
| CN216697908U (en) | Flexible fireproof cable |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |