CN107545947A - A kind of low-pressure fireproof cable - Google Patents

A kind of low-pressure fireproof cable Download PDF

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Publication number
CN107545947A
CN107545947A CN201710350522.8A CN201710350522A CN107545947A CN 107545947 A CN107545947 A CN 107545947A CN 201710350522 A CN201710350522 A CN 201710350522A CN 107545947 A CN107545947 A CN 107545947A
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CN
China
Prior art keywords
layer
outside
low
extruded
retardant polyolefin
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.)
Withdrawn
Application number
CN201710350522.8A
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Chinese (zh)
Inventor
董建深
吴健
马建平
刘珏
贺云芳
刘永伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUXI NEW SUNSHINE CABLE CO Ltd
Original Assignee
WUXI NEW SUNSHINE CABLE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUXI NEW SUNSHINE CABLE CO Ltd filed Critical WUXI NEW SUNSHINE CABLE CO Ltd
Priority to CN201710350522.8A priority Critical patent/CN107545947A/en
Publication of CN107545947A publication Critical patent/CN107545947A/en
Withdrawn legal-status Critical Current

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Abstract

The invention 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.Flameproof effect of the present invention is good, water, shock, shock resistance, strong environmental adaptability, this product green, and security performance is superior.

Description

A kind of low-pressure fireproof cable
Technical field
The present invention relates 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.
The content of the invention
Goal of the invention:In order to overcome the deficiencies in the prior art, there is provided a kind of flameproof effect is good, shock resistance, Strong environmental adaptability, production is not by length limitation, and without transition joint, terminal fitting is identical with pressure common modeling power cable, peace Dress is convenient, the low low-pressure fireproof cable of cost.
Technical scheme:To achieve the above object, the present invention provides a kind of low-pressure fireproof cable, including four insulated wire cores, Four described insulated wire cores are twisted into cable core;Described insulated wire cores by 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 are formed; The gap filling mineral fire prevention packed layer of described cable core, it is wrapped to be externally provided with Ceramic silicon rubber in mineral fire prevention packed layer Band, oversheath is extruded outside Ceramic silicon rubber twining package tape, fire-proof mud is scribbled in the internal layer surface of oversheath, the is extruded outside outer layer Two 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 present invention are:
1st, present invention mineral fire prevention packed layer fast ceramic when meeting fire, forms stiff shell, plays the fiery cooling effect of gear; Second fireproofing function is played outside cable conductor after wrapped high temperature resistant mica tape, the first one-tenth porcelain type fire retardant polyolefin sheath plays Three fireproofing functions, so flameproof effect of the present invention 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 the present invention It 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.
3rd, the outer jacket of product cable of the invention is existed using halogen-free and low-smoke flame-retardant polyolefin material as outer jacket, product Visible flame will not be produced during burning, a large amount of toxic smogs will not be produced in combustion, therefore when fire occurs to each The time has been fought in the startup of item 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 the structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate The present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are each to the present invention's The modification of the kind equivalent form of value falls within the application appended claims limited range.
As shown in figure 1, the present invention provides a kind of low-pressure fireproof cable, including four insulated wire cores, described four thoroughly do away with edge Core is 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 mica tape Dichroic layer outside insulating barrier 3 and the first one-tenth porcelain type fire retardant polyolefin sheath 4 being extruded in outside dichroic layer are formed;Described cable core Gap filling mineral fire prevention packed layer 5, Ceramic silicon rubber twining package tape 6 is externally provided with mineral fire prevention packed layer, in ceramics Oversheath 8 is extruded outside SiClx rubber twining package tape, fire-proof mud 7 is scribbled in the internal layer surface of oversheath, the second one-tenth porcelain is extruded outside outer layer 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.
The present invention fire prevention principle be:Prevent fires packed layer fast ceramic at high temperature, formed when cable meets with fire Cellular solid gear fire, water, shock, cool duricrust, cable internal temperature is far below external temperature, the duricrust and cable In the positioning of each insulated wire cores, be allowed to keep at a distance each other;It is still sustainable to send meanwhile the present invention is not afraid of external water leaching and vibrations Electricity;The quality time is won to putting out a fire and rescuing people's lives and properties.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements It all fall within the protetion scope of the claimed invention.

Claims (5)

  1. 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. 2. low-pressure fireproof cable according to claim 1, it is characterised in that:Described conductor is circular compact conductor.
  3. 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. 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. 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.
CN201710350522.8A 2017-05-18 2017-05-18 A kind of low-pressure fireproof cable Withdrawn CN107545947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710350522.8A CN107545947A (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
CN201710350522.8A CN107545947A (en) 2017-05-18 2017-05-18 A kind of low-pressure fireproof cable

Publications (1)

Publication Number Publication Date
CN107545947A true CN107545947A (en) 2018-01-05

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110111926A (en) * 2019-04-03 2019-08-09 深圳市奔达康电缆股份有限公司 A kind of fireproof cable with automatic cooling mineral refuge floor
CN113035431A (en) * 2021-03-02 2021-06-25 郑缆科技股份有限公司 High-stability environment-friendly fireproof cable

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202422824U (en) * 2012-02-16 2012-09-05 沈阳鹏程电缆有限公司 Fireproof low-voltage cable
CN103000278A (en) * 2012-12-17 2013-03-27 无锡江南电缆有限公司 Flexible fireproof multiple-core cable
CN205282159U (en) * 2016-01-18 2016-06-01 明达线缆集团有限公司 Flexible fireproof cable of isolated form mineral insulation
CN205959656U (en) * 2016-08-25 2017-02-15 无锡市华美电缆有限公司 Fire -retardant environmental protection cable of low pressure
CN207068491U (en) * 2017-05-18 2018-03-02 无锡市新阳光电缆有限公司 A kind of low-pressure fireproof cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202422824U (en) * 2012-02-16 2012-09-05 沈阳鹏程电缆有限公司 Fireproof low-voltage cable
CN103000278A (en) * 2012-12-17 2013-03-27 无锡江南电缆有限公司 Flexible fireproof multiple-core cable
CN205282159U (en) * 2016-01-18 2016-06-01 明达线缆集团有限公司 Flexible fireproof cable of isolated form mineral insulation
CN205959656U (en) * 2016-08-25 2017-02-15 无锡市华美电缆有限公司 Fire -retardant environmental protection cable of low pressure
CN207068491U (en) * 2017-05-18 2018-03-02 无锡市新阳光电缆有限公司 A kind of low-pressure fireproof cable

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110111926A (en) * 2019-04-03 2019-08-09 深圳市奔达康电缆股份有限公司 A kind of fireproof cable with automatic cooling mineral refuge floor
CN113035431A (en) * 2021-03-02 2021-06-25 郑缆科技股份有限公司 High-stability environment-friendly fireproof cable

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