CN208368235U - A kind of fire-retardant compound shell-less power cable - Google Patents
A kind of fire-retardant compound shell-less power cable Download PDFInfo
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- CN208368235U CN208368235U CN201820477348.3U CN201820477348U CN208368235U CN 208368235 U CN208368235 U CN 208368235U CN 201820477348 U CN201820477348 U CN 201820477348U CN 208368235 U CN208368235 U CN 208368235U
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Abstract
The utility model discloses a kind of fire-retardant compound shell-less power cables, including cable core, the cable core to be composed of three insulated wire cores and a fiber unit；Rock wool is filled in the gap of cable core, Environmental-protective fire-proof nanometer mineral insulation is extruded outside cable core, strippable semi-conductive insulation shield layer is externally provided in Environmental-protective fire-proof nanometer mineral insulation, it is externally provided with the second flame retardant coating in strippable semi-conductive insulation shield layer, is externally provided with composite cable pipe in flame retardant coating.The good flame-retardant performance of the utility model, mechanical performance, anti-pressure ability, marked effect, can use in more rugged environment.
Description
Technical field
The utility model relates to wire and cable fields, and in particular to a kind of fire-retardant compound shell-less power cable.
Background technique
With advances in technology with society development, numerous Business groups, skyscraper, place of public amusement, subway
And underground street etc. continues to bring out, electricity consumption is growing day by day, and the kind and dosage of all kinds of cables are also increase accordingly.However it is common
Cable cannot bear mechanical external force simultaneously and carry out effective waterproof, in many important events, once cable be damaged or into
When water results in the systems such as power supply, communication to be unable to run or even accident occurs, make troubles to normal social life.
Mechanically damaged in order to prevent, power cable forms armored cable in outer layer armored protective layer.Cable adds armour
The purpose of layer is filled other than the mechanical protections such as enhancing tensile strength, compression strength prolong the service life, more important is pass through screen
It covers protection and improves cable interference free performance, also can lead to short circuit to prevent pounding, pressing, racking damage core after cable sheath.Armouring
Cable is mainly used for the temperature measurement, signal transmission and special heating of chemical industry, metallurgy, machine-building, power generation and scientific experimentation etc.,
The deficiency of existing armored cable is: armored protective layer tensile strength is lower, and the external force of receiving is not big enough；Armored protective layer screen
It is poor to cover effect, it is impossible to be used in the serious occasion of electromagnetic interference；In addition, cable core is twisted using a plurality of insulated core, and it is every
A insulated wire cores are all the outer extruded insulation layers of conductor, and such effect that extrudes is bad, cracking is easy when extruding, and waste material
Material.
In order to save more life, property and information from the merciless scene of a fire, being applied to of fireproof cable attach most importance in it
Weight, and fireproof cable currently on the market can be divided into two kinds of rigidity and flexibility by architectural characteristic.Due to rigid mineral insulation electricity
Cable rigidity mineral insulated cable (Mineral Insulated Cable) abbreviation MI cable is in terms of reliability, production and laying
Defect, gradually quit listing in European and American developed countries, flexible mineral insulation fireproof cable become fire protection field mainstream cable produce
Product.General cable metal set uses copper sheathing, and the process is more complicated, low efficiency, and higher cost, and separation layer is passed through frequently with heated temperature
Lower material is spent, isolation can not be formed, so that isolation material is heated by broken meeting, frequently results in phenomena such as cable is short-circuit.
With the substantial increase of China's super-pressure and high voltage power cable laying amount, the operational safety and quality of power cable
Monitoring is more and more important, needs to carry out temperature, transmission load real time monitoring using distribution type fiber-optic measuring system (DTS), to super
High pressure and high voltage power cable realize that internal or external extraordinary temperature measuring optical cable becomes optical fiber composite high-voltage cable, i.e., so-called " intelligence
Energy cable ".Meanwhile " triple play " has been included in the Pilot project construction of smart grid by Utilities Electric Co., national grid is pushed in the whole nation
Power optical fiber is registered one's residence, it is desirable that is realized power grid end electric power and is communicated the power optical fiber of " integration " to the photoelectric compound cable at family.
With the rapid development of communication cable and power cable, application of the cable in our daily life is wider
General, effect is also further important, and the protection of cable is required also higher and higher, must be requested that cable tube has certain intensity
And anti-pressure ability, cable tube in the prior art is mainly made by fibre-cement pipe, but this cable tube heavier-weight,
Flexible poor, very inconvenient use；Aging can occur in long-time use process for cable, easily cause fire, common electricity
Cable pipe does not have fire-proof function, seriously affects the safety of pipeline；And the company in long-time use process, between cable protection pipe
The place of connecing has some small gaps, and underground water can enter in pipe, causes some potential safety problems；And on the pipeline of electric system
Certain mark is not done, does not have warning function in later maintenance, and there are some potential safety problemss, therefore are improved.
Utility model content
In order to overcome the deficiencies in the prior art, a kind of fire-retardant compound shell-less power cable is provided.
To achieve the above object, the utility model provides a kind of fire-retardant compound shell-less power cable, including cable core, described
Cable core be composed of three insulated wire cores and a fiber unit；Rock wool is filled in the gap of cable core, is squeezed outside cable core
Packet Environmental-protective fire-proof nanometer mineral insulation is externally provided with strippable semi-conductive insulation shield in Environmental-protective fire-proof nanometer mineral insulation
Layer, is externally provided with the second flame retardant coating in strippable semi-conductive insulation shield layer, is externally provided with composite cable pipe in flame retardant coating.
Preferably, the insulated wire cores press copper conductor by center, and polyethylene insulation is successively extruded outside copper conductor
Layer and strippable semi-conductive insulation shield layer are constituted.
Preferably, first flame retardant coating is identical as the second fire-resistant layer structure, by weight by polymer and flame retardant
Than being mixed to get for 100: 30-160, inorganic compound and hydrocarbon that the flame retardant is 0.1-1: 1 by weight ratio
Object is mixed with to obtain.
Preferably, the fiber unit by optical fiber and covers the bellows outside optical fiber and constitutes.
Preferably, the composite cable pipe, including fibre-cement pipe；Moisture absorption is provided on the inside of the fibre-cement pipe
Layer；The inside of the fibre-cement pipe is equipped with several stiffeners being circumferentially evenly arranged；The tube wall of the fibre-cement pipe
Interior to be equipped with connecting hoop, the connecting hoop is structure as a whole with stiffener；The outer surface of the fibre-cement pipe is set from inside to outside
It is equipped with flame-retardant layer and coat.
Compared with prior art, the utility model has the beneficial effects that:
1, the utility model is equipped with fiber unit, and temperature, transmission load real time monitoring can be carried out to power cable, can
For " triple play "；Silk thread beam surrounds the optical fiber directly dragged, and optical fiber will not be pulled off, and silk thread beam has also carried out effective guarantor to optical fiber
Shield will not be extruded in processing, laying, especially when cable is run, be bound to generate heat and expand, it is ensured that have space
Optical fiber is accommodated, elastic material provides the space of buffering to the inside of expansion again, ensure that optical fiber will not be damaged, can be normal
Operation；
2, mineral insulation is constituted using Environmental-protective fire-proof nanometer mineral insulation material, under rated voltage can be 2.5 times of excess load
And insulating effect is played as usual；Long-term operating temperature range is: -40 degrees Celsius to 1200 degrees Celsius, insulating as usual；800-
It is not short-circuit in 1.5 hours under the ablation of 1200 degrees Celsius of open fires, do not cause electrical fire, it more will not be combustion-supporting；In open fire ablation process
In, not only fire retardant nonflame, but also no longer releasing asphyxia toxic gas has low cigarette, nontoxic, Halogen, fire-retardant characteristic；It is bearing
When mechanical external force, electromagnetism interference；At low cost, good performance indexes；Insulating layer suitable for various wire and cables；
3, using the first flame retardant coating and the second flame retardant coating, so that cable has a good flame-retardant performance, mechanical performance,
Processing performance, security performance and at low cost；
4, using cable tube structure, structure is simple, by the setting of stiffener, can effectively increase fibre-cement pipe
Mechanical strength, so that anti-pressure ability is improved；And be connected as one by connecting hoop and stiffener, by all reinforcements
Reinforcing bar is connected as one, and serves as a braced frame, make the mechanical strength of the composite cable pipe and anti-pressure ability obtained more into
The raising of one step；Moisture absorption layer can absorb moisture or infiltration in inner air tube, and stable working environment is provided for cable；Flame-retardant layer
Setting, enhance the flame retardant property of cable tube, be suitble to use in more rugged environment；By coat, to power train
The pipeline color identifier of system acts on, and certain warning function is played during pipeline maintainance.
5, the cable has good flame-retardant performance, mechanical performance, anti-pressure ability, marked effect, can be more
It is used in rugged environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of composite cable pipe.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate, it should be understood that these embodiments are only used for
Illustrate the utility model rather than limitation the scope of the utility model, after having read the utility model, art technology
Personnel fall within the application range as defined in the appended claims to the modification of the various equivalent forms of the utility model.
As shown in Figure 1, the utility model provides a kind of fire-retardant compound shell-less power cable, including cable core, the cable
Core is composed of three insulated wire cores and a fiber unit；The insulated wire cores press copper conductor 1 by center, in copper
Polyethylene layer 2 is successively extruded outside conductor and the first flame retardant coating 3 is constituted；The fiber unit is by optical fiber 4 and covers
Bellows 5 outside optical fiber is constituted；Rock wool 6 is filled in the gap of cable core, Environmental-protective fire-proof nanometer mineral insulation is extruded outside cable core
Layer 7, is externally provided with strippable semi-conductive insulation shield layer 8 in Environmental-protective fire-proof nanometer mineral insulation, in strippable semiconductive
Insulation screen is externally provided with the second flame retardant coating 9, is externally provided with composite cable pipe 10 in flame retardant coating.
As shown in Fig. 2, composite cable pipe, including fibre-cement pipe 11, the inside of fibre-cement pipe 11 are provided with moisture absorption layer
12, moisture absorption layer 12 with a thickness of 3-6mm, moisture absorption layer 12 can absorb moisture or infiltration in inner air tube, provide stabilization for cable
Working environment；The inside of fibre-cement pipe is equipped with several stiffeners 13 being circumferentially evenly arranged, and stiffener quantity is
Five, by the setting of stiffener, it can effectively increase the mechanical strength of fibre-cement pipe, so that anti-pressure ability obtains
It improves；Connecting hoop 14 is equipped in the tube wall of fibre-cement pipe, connecting hoop 14 is structure as a whole with stiffener 13, and all are added
Strong reinforcing bar 13 is connected as one, and is served as a braced frame, is obtained the mechanical strength of the composite cable pipe and anti-pressure ability
It is further to improve；The outer surface of fibre-cement pipe is provided with flame-retardant layer 15 and coat 16 from inside to outside；Flame-retardant layer is silicon
Sour aluminium heat-preservation cotton layer, enhances the flame retardant property of composite cable pipe, is suitble to use in more rugged environment；The thickness of coat
Degree is identified effect to the pipeline color of electric system, and in pipeline maintainance process by coat for 0.15-0.30mm
In play certain warning function.
First flame retardant coating is identical as the second fire-resistant layer structure, is by weight 100 by polymer and flame retardant:
30-160 is mixed to get, and the inorganic compound and hydrocarbon compound mixing that the flame retardant is 0.1-1: 1 by weight ratio are made
It is standby to obtain.
The above is only the preferred embodiment of the utility model, it is noted that for the ordinary skill people of this field
For member, without departing from the principle of this utility model, several variations and modifications can also be made, these also should be regarded as belonging to
In the protection scope of the utility model.
Claims (5)
1. a kind of fire-retardant compound shell-less power cable, including cable core, it is characterised in that: the cable core is by three insulated wire cores
It is composed with a fiber unit；Rock wool is filled in the gap of cable core, it is exhausted that Environmental-protective fire-proof nanometer mineral are extruded outside cable core
Edge layer is externally provided with strippable semi-conductive insulation shield layer in Environmental-protective fire-proof nanometer mineral insulation, in strippable semiconductive
Insulation screen is externally provided with the second flame retardant coating, is externally provided with composite cable pipe in flame retardant coating.
2. fire-retardant compound shell-less power cable according to claim 1, it is characterised in that: the insulated wire cores are in
The heart presses copper conductor, and polyethylene layer is successively extruded outside copper conductor and the first flame retardant coating is constituted.
3. fire-retardant compound shell-less power cable according to claim 2, it is characterised in that: first flame retardant coating with
Second fire-resistant layer structure is identical, is by weight 100: 30-160 to be mixed to get by polymer and flame retardant, described is fire-retardant
The inorganic compound and hydrocarbon compound that object is 0.1-1: 1 by weight ratio are mixed with to obtain.
4. fire-retardant compound shell-less power cable according to claim 1, it is characterised in that: the fiber unit is by light
Bellows that is fine and covering outside optical fiber is constituted.
5. fire-retardant compound shell-less power cable according to claim 1, it is characterised in that: the composite cable pipe,
Including fibre-cement pipe；Moisture absorption layer is provided on the inside of the fibre-cement pipe；The inside of the fibre-cement pipe is equipped with several
The stiffener being circumferentially evenly arranged；Connecting hoop, the connecting hoop and reinforcement steel are equipped in the tube wall of the fibre-cement pipe
Muscle is structure as a whole；The outer surface of the fibre-cement pipe is provided with flame-retardant layer and coat from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477348.3U CN208368235U (en) | 2018-04-04 | 2018-04-04 | A kind of fire-retardant compound shell-less power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477348.3U CN208368235U (en) | 2018-04-04 | 2018-04-04 | A kind of fire-retardant compound shell-less power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208368235U true CN208368235U (en) | 2019-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820477348.3U Active CN208368235U (en) | 2018-04-04 | 2018-04-04 | A kind of fire-retardant compound shell-less power cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346488A (en) * | 2018-04-04 | 2018-07-31 | 江苏荣宜电缆有限公司 | A kind of fire-retardant compound shell-less power cable |
| WO2022016496A1 (en) * | 2020-07-24 | 2022-01-27 | 江苏华能电缆股份有限公司 | Distributed sensing load bearable detective cable |
-
2018
- 2018-04-04 CN CN201820477348.3U patent/CN208368235U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346488A (en) * | 2018-04-04 | 2018-07-31 | 江苏荣宜电缆有限公司 | A kind of fire-retardant compound shell-less power cable |
| WO2022016496A1 (en) * | 2020-07-24 | 2022-01-27 | 江苏华能电缆股份有限公司 | Distributed sensing load bearable detective cable |
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