CN207068491U - A kind of low-pressure fireproof cable - Google Patents
A kind of low-pressure fireproof cable Download PDFInfo
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- CN207068491U CN207068491U CN201720551638.3U CN201720551638U CN207068491U CN 207068491 U CN207068491 U CN 207068491U CN 201720551638 U CN201720551638 U CN 201720551638U CN 207068491 U CN207068491 U CN 207068491U
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Abstract
The utility model discloses a kind of low-pressure fireproof cable, including four insulated wire cores, described four insulated wire cores are twisted into cable core；Described insulated wire cores are made up of conductor, the mica tape insulating barrier being extruded in outside conductor, wrapped dichroic layer outside mica tape insulating barrier and the first one-tenth porcelain type fire retardant polyolefin sheath being extruded in outside dichroic layer；The gap filling mineral fire prevention packed layer of described cable core, Ceramic silicon rubber twining package tape is externally provided with mineral fire prevention packed layer, oversheath is extruded outside Ceramic silicon rubber twining package tape, fire-proof mud is scribbled in the internal layer surface of oversheath, the second one-tenth porcelain type fire retardant polyolefin sheath is extruded outside outer layer；Described mineral fire prevention packed layer is that magnesium hydroxide inserts is mixed with glass glue.The utility model flameproof effect is good, water, shock, shock resistance, strong environmental adaptability, this product green, and security performance is superior.
Description
Technical field
It the utility model is related to field of cables, and in particular to a kind of low-pressure fireproof cable.
Background technology
At present, construction market is particularly the building of main public place, to fire protection requirement more and more higher, it is desirable to has fire prevention
The lv power cable of performance itself does not burn not only, does not propagate and expand the condition of a fire, and requires in flame, water leaching and vibrations feelings
Normal power transmission under condition, the quality time is won to putting out a fire and rescuing people's lives and properties.Traditional fireproof cable typically uses mineral
Insulation（Magnesia）With copper pipe sheath, although having certain fire protecting performance, many problems be present, these problems are mainly made
It is short to make length, transition joint and terminal fitting are needed when installing and using, particularly real core conductor causes cable hard, it is difficult to bend and
Straight, joint difficulty is big, and cable end easily makes moist, and reduces insulaion resistance, and amount of copper consuming is big, and cost is high, has had a strong impact on anti-
Thermoelectricity cable using and promoting.
The mostly of the common flame-proof environmental protection cable of in the market are that insulation uses glass fiber rope etc. using organosilane crosslinked polyethylene, filling
Similar material, sheath use halogen-free and low-smoke flame-retardant polyolefin cable, the cable mainly by using low smoke, zero halogen material and
Reach the requirement of environmental protection.But because insulation uses organosilane crosslinked polyethylene in actual production process, it is combustible material, though it is outside
Using fire proofing, but in use such as fire, after outside fire proofing burning, cable insulation can equally melt drop, combustion
Burn, it is impossible to ensure the safe and reliable of circuit.
Utility model content
Purpose of utility model：In order to overcome the deficiencies in the prior art, there is provided a kind of flameproof effect is good, impact resistance
Can, strong environmental adaptability, production is not by length limitation, and without transition joint, terminal fitting is identical with pressure common modeling power cable,
It is easy for installation, the low low-pressure fireproof cable of cost.
Technical scheme：To achieve the above object, the utility model provides a kind of low-pressure fireproof cable, including four insulated wires
Core, described four insulated wire cores are twisted into cable core；Described insulated wire cores are by conductor, the mica tape insulation being extruded in outside conductor
Layer, wrapped dichroic layer outside mica tape insulating barrier and the first one-tenth porcelain type fire retardant polyolefin sheath structure being extruded in outside dichroic layer
Into；The gap filling mineral fire prevention packed layer of described cable core, mineral fire prevention packed layer be externally provided with Ceramic silicon rubber around
Band, oversheath is extruded outside Ceramic silicon rubber twining package tape, scribble fire-proof mud in the internal layer surface of oversheath, extruded outside outer layer
Second into porcelain type fire retardant polyolefin sheath；Described mineral fire prevention packed layer is that magnesium hydroxide inserts mixes system with glass glue
Into.
Further, described conductor is circular compact conductor.
Further, described dichroic layer and oversheath are made of halogen-free and low-smoke flame-retardant polyolefin material.
Further, the thickness of described fire-proof mud is 1.5-2cm.
Further, the thickness of described the first one-tenth porcelain type fire retardant polyolefin sheath and the second one-tenth porcelain type fire retardant polyolefin sheath
The ratio between degree is 1:1.5, wherein, the thickness of the first one-tenth porcelain type fire retardant polyolefin sheath is 2.75-3.25mm.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model mineral fire prevention packed layer fast ceramic when meeting fire, forms stiff shell, plays gear fire
Cooling effect；Second fireproofing function, the first one-tenth porcelain type fire retardant polyolefin are played outside cable conductor after wrapped high temperature resistant mica tape
Sheath plays the 3rd fireproofing function, so the utility model flameproof effect is good, it is tens times of common cable.
2nd, mineral fire prevention packed layer is that magnesia inserts and glass glue are mixed, and is prevented fires when cable meets with fire
Packed layer fast ceramic at high temperature, cellular solid gear fire is formed, water, shock, cool duricrust, makes temperature inside cable
Degree is far below external temperature, and the duricrust positions with each insulated wire cores in cable, is allowed to keep at a distance each other；Meanwhile this practicality
It is new not to be afraid of external water leaching and vibrations, still sustainable power transmission；The quality time is won to putting out a fire and rescuing people's lives and properties.
3rd, the outer jacket of product cable of the present utility model is produced using halogen-free and low-smoke flame-retardant polyolefin material as outer jacket
Product will not produce visible flame in burning, will not produce a large amount of toxic smogs in combustion, therefore when fire occurs
The time has been fought in startup to every system, ensure that the person and property safety of the people, reduces national loss.
4th, it is inside and outside to be designed with into porcelain type fire retardant polyolefin sheath, can be in flame low temperature（400 DEG C or so）Crusted into porcelain, shape
Into stable entirety, oxygen is blocked to inside and outside realize；Ceramic silicon rubber twining package tape one can be realized fire-retardant, and two can delay
The speed that temperature is inwardly conducted；Fire-proof mud can prevent the insulating barrier burning of inside while fire resisting, and in high fire-retardance band
Overall rock-steady structure is formed under the parcel of layer, the position of cable core is kept and airtight anoxia environment is formed to cable core, effectively realize
Fire-retardant, this product can be by A class fire retardancy tests, and flame retardant effect is excellent, high yield rate, especially suitable for skyscraper, oil
Field, power station, power plant, mine, chemical industry, subway etc. require the higher occasion of fire-retardant condition, are provided simultaneously with stronger mechanical performance, such as
Shock resistance, strong environmental adaptability, this product green, security performance are superior.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, 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 the utility model has been read, art technology
Modification of the personnel to the various equivalent form of values of the present utility model falls within the application appended claims limited range.
As shown in figure 1, a kind of low-pressure fireproof cable of the utility model offer, including four insulated wire cores, described four
Insulated wire cores are twisted into cable core；Described insulated wire cores are by conductor 1, the mica tape insulating barrier 2 being extruded in outside conductor, wrapped in cloud
Dichroic layer outside master tape insulating barrier 3 and the first one-tenth porcelain type fire retardant polyolefin sheath 4 being extruded in outside dichroic layer are formed；Described
The gap filling mineral fire prevention packed layer 5 of cable core, Ceramic silicon rubber twining package tape 6 is externally provided with mineral fire prevention packed layer,
Oversheath 8 is extruded outside Ceramic silicon rubber twining package tape, fire-proof mud 7 is scribbled in the internal layer surface of oversheath, second is extruded outside outer layer
Into porcelain type fire retardant polyolefin sheath 9；Described mineral fire prevention packed layer is that magnesium hydroxide inserts is mixed with glass glue.
Further improve, described conductor is circular compact conductor.
Further improve, described dichroic layer and oversheath are made of halogen-free and low-smoke flame-retardant polyolefin material.
Further improve, the thickness of described fire-proof mud is 1.5-2cm.
Further improve, described the first one-tenth porcelain type fire retardant polyolefin sheath and the second one-tenth porcelain type fire retardant polyolefin sheath
The ratio between thickness is 1:1.5, wherein, the thickness of the first one-tenth porcelain type fire retardant polyolefin sheath is 2.75-3.25mm.
It is of the present utility model fire prevention principle be：Prevented fires when cable meets with fire packed layer fast ceramic at high temperature,
Form cellular solid gear fire, water, shock, cool duricrust, cable internal temperature be far below external temperature, the duricrust and
Each insulated wire cores positioning, is allowed to keep at a distance each other in cable；Meanwhile the utility model is not afraid of external water leaching and vibrations, still
Sustainable power transmission；The quality time is won to putting out a fire and rescuing people's lives and properties.
General principle, principal character and advantage of the present utility model has been shown and described above.The technical staff of the industry
It should be appreciated that the utility model is not restricted to the described embodiments, the simply explanation described in above-described embodiment and specification is originally
The principle of utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model also has various change
And improvement, these changes and improvements are both fallen within claimed the scope of the utility model.
Claims (5)
- A kind of 1. low-pressure fireproof cable, it is characterised in that：Including four insulated wire cores, described four insulated wire cores twisted synthesizing cables Core；Described insulated wire cores are by conductor, the mica tape insulating barrier being extruded in outside conductor, the wrapped color separation outside mica tape insulating barrier Layer and the first one-tenth porcelain type fire retardant polyolefin sheath being extruded in outside dichroic layer are formed；The gap filling mineral of described cable core Fire prevention packed layer, Ceramic silicon rubber twining package tape is externally provided with mineral fire prevention packed layer, is squeezed outside Ceramic silicon rubber twining package tape Bag oversheath, fire-proof mud is scribbled in the internal layer surface of oversheath, the second one-tenth porcelain type fire retardant polyolefin sheath is extruded outside outer layer；It is described Mineral fire prevention packed layer be magnesium hydroxide inserts be mixed with glass glue.
- 2. low-pressure fireproof cable according to claim 1, it is characterised in that：Described conductor is circular compact conductor.
- 3. low-pressure fireproof cable according to claim 1, it is characterised in that：Described dichroic layer and oversheath use Halogen Low-smoke flame-proof polyolefin material is made.
- 4. low-pressure fireproof cable according to claim 1, it is characterised in that：The thickness of described fire-proof mud is 1.5-2cm.
- 5. low-pressure fireproof cable according to claim 1, it is characterised in that：Described the first one-tenth porcelain type fire retardant polyolefin shield Layer is 1 with the ratio between the thickness of the second one-tenth porcelain type fire retardant polyolefin sheath:1.5, wherein, the first one-tenth porcelain type fire retardant polyolefin sheath Thickness is 2.75-3.25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551638.3U CN207068491U (en) | 2017-05-18 | 2017-05-18 | A kind of low-pressure fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720551638.3U CN207068491U (en) | 2017-05-18 | 2017-05-18 | A kind of low-pressure fireproof cable |
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| Publication Number | Publication Date |
|---|---|
| CN207068491U true CN207068491U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720551638.3U Active CN207068491U (en) | 2017-05-18 | 2017-05-18 | A kind of low-pressure fireproof cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545947A (en) * | 2017-05-18 | 2018-01-05 | 无锡市新阳光电缆有限公司 | A kind of low-pressure fireproof cable |
| CN109036685A (en) * | 2018-08-22 | 2018-12-18 | 安徽明星电缆有限公司 | A kind of low-pressure fireproof cable |
-
2017
- 2017-05-18 CN CN201720551638.3U patent/CN207068491U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107545947A (en) * | 2017-05-18 | 2018-01-05 | 无锡市新阳光电缆有限公司 | A kind of low-pressure fireproof cable |
| CN109036685A (en) * | 2018-08-22 | 2018-12-18 | 安徽明星电缆有限公司 | A kind of low-pressure fireproof cable |
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