CN208753035U - 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant control cable - Google Patents

Abstract

The utility model relates to a kind of 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant to control cable, solve the deficiencies in the prior art, technical solution are as follows: including several cores, inhibiting tape and restrictive coating, the core includes conductor and insulating layer, the outside packet of the conductor is equipped with insulating layer, the conductor is solid core or multiply bundle strand copper conductor core, the insulating layer is 125 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin insulating layers, the outside packet of all cores is equipped at least 4 layers of inhibiting tape, the outside packet of the inhibiting tape is equipped with restrictive coating, the inhibiting tape is low-smoke non-halogen flame-retardant band, the restrictive coating is that 125 DEG C of irradiation crosslinking halogen-frees are low-smoke flame-retardant polyolefin sheathed.

Description

125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant control cable

Technical field

The utility model relates to a kind of cables, and in particular to a kind of 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant Control cable.

Background technique

The heatproof of common silanes cross-linked polyethylene insulated cable only has 90 DEG C, and does not have flame retardant property, uses routine The temperature resistant grade for controlling cable when silane crosslinked insulating only has 90 degree, and bunched burning test is very difficult passes through, and overloads energy Power is weak: for the prior art since running temperature height causes cable to recycle fever in use, service life is short.More with society Progress, the raising of the reach of science and people's environmental consciousness, release corrosive gas and toxic gas when the prior art is burnt, Secondary hazards can be generated, modern fire safety requirements is not met, it is therefore desirable to develop a kind of low cigarette of 125 DEG C of cross-linking radiations of high temperature resistant Halogen-free high flame-retardant controls cable.

Utility model content

Utility model aims to solve the heatproofs of the common silanes cross-linked polyethylene insulated cable of the above-mentioned prior art Only 90 DEG C, and do not have flame retardant property, there was only 90 degree using the temperature resistant grade for controlling cable when conventional silane cross linked insulation, And bunched burning test is very difficult passes through, and overload capacity is weak: the prior art causes cable using due to running temperature height Circulation fever, the short problem of service life in the process provide a kind of 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardance controls of high temperature resistant Cable.

The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of 125 DEG C of cross-linking radiations of high temperature resistant are low Cigarette halogen-free high flame-retardant controls cable, it is characterised in that: including several cores, inhibiting tape and restrictive coating, the core includes leading Body and insulating layer, the conductor outside packet be equipped with insulating layer, the conductor be solid core or multiply bundle strand copper conductor core, it is described absolutely Edge layer is 125 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin insulating layers, and the outside packet of all cores is equipped at least 4 layers fire-retardant The outside packet of band, the inhibiting tape is equipped with restrictive coating, and the inhibiting tape is low-smoke non-halogen flame-retardant band, and the restrictive coating is 125 DEG C of irradiation crosslinking halogen-frees are low-smoke flame-retardant polyolefin sheathed.125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant control cable Performance reaches following requirements:

1) conductor DC resistance meets GB/T 3956-2008 requirement；

2) pressure test: exchange 3000V/5min does not puncture；

3) there is high temperature resistant (under the conditions of 125 DEG C) performance；

4) low smoke, zero halogen performance: value >=4.3 PH, conductivity≤10 μ s/mm, light transmittance >=80%；5) single vertical burns Performance: meet the requirement of GB/T 19666-2005 standard；

6) heat extends index: under the conditions of (200 ± 3 DEG C of temperature, load-time 15min, mechanical pressure 0.20MPa), carrying Elongation≤175% under lotus, elongation≤25% after cooling；

7) fire-retardant A class performance: meet A class bunchy combustion requirements in GB/T 19666-2005 standard.

The key of the invention is: insulation uses 125 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin Insulation Materials, and extrusion molding is laggard Row cross-linking radiation；The wrapped 4 layers of low-smoke non-halogen flame-retardant band of stranding；Oversheath uses 125 DEG C of irradiation crosslinking halogen-free low-smoke and flame retardant polyenes Hydrocarbon protective cover material makes the cable that there is 125 DEG C of high temperature resistant, high fire-retardance grade to reach A class.It will be provided using the occasion in densely populated place High security performance.The product has low-smoke non-halogen flame-retardant environmental-protecting performance, and in high temperature or burning, Halogen is nontoxic, ensure that people Life security, will not cause burn into that will not pollute to atmospheric environment to precision equipment.

Preferably, the conductor is solid core or five class conductors.

Preferably, further including having temperature-measuring optical fiber, the temperature-measuring optical fiber is abutted with the core, the temperature-measuring optical fiber and institute Core is stated to be packaged in together in the inhibiting tape.In this way, the effect of temperature detection can be further functioned as.

Preferably, the thickness of the insulating layer is at least 1.5 times of the conductor diameter, the thickness of the restrictive coating is extremely It is 2 times of the conductor diameter less.

Preferably, axially spaced-apart is provided with axial raised stiffener, the protrusion stiffener edge on the restrictive coating 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardance control cable center of high temperature resistant are symmetrical.In this way, structural strength is stronger.

The substantial effect of the utility model is: will provide high security performance using the occasion in densely populated place.It should Product has low-smoke non-halogen flame-retardant environmental-protecting performance, and in high temperature or burning, Halogen is nontoxic, ensure that people's life security, will not be right Precision equipment causes burn into that will not pollute to atmospheric environment.

Detailed description of the invention

Fig. 1 is the overall structure diagram of embodiment one；

Fig. 2 is the schematic diagram of restrictive coating in embodiment two.

In figure: 1, conductor, 2, insulating layer, 3, inhibiting tape, 4, restrictive coating, 5, raised stiffener.

Specific embodiment

Below by specific embodiment, and in conjunction with attached drawing, the technical solution of the utility model is made further specifically It is bright.

Embodiment:

A kind of 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardance controls cable (referring to attached drawing 1) of high temperature resistant, if including main line Core, inhibiting tape 3 and restrictive coating 4, the core include conductor 1 and insulating layer 2, and the outside packet of the conductor is equipped with insulating layer, The conductor is solid core or multiply bundle strand copper conductor core, and the insulating layer is 125 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefins Insulating layer, the outside packet of all cores are equipped at least 4 layers of inhibiting tape, and the outside packet of the inhibiting tape is equipped with restrictive coating, described Inhibiting tape is low-smoke non-halogen flame-retardant band, and the restrictive coating is that 125 DEG C of irradiation crosslinking halogen-frees are low-smoke flame-retardant polyolefin sheathed.Institute Stating conductor is solid core or five class conductors.The thickness of the insulating layer is at least 1.5 times of the conductor diameter, the restrictive coating Thickness is at least 2 times of the conductor diameter.

Performance reaches following requirements:

1) conductor DC resistance meets GB/T 3956-2008 requirement；

2) pressure test: exchange 3000V/5min does not puncture；

3) there is high temperature resistant (under the conditions of 125 DEG C) performance；

4) low smoke, zero halogen performance: value >=4.3 PH, conductivity≤10 μ s/mm, light transmittance >=80%；5) single vertical burns Performance: meet the requirement of GB/T 19666-2005 standard；

6) heat extends index: under the conditions of (200 ± 3 DEG C of temperature, load-time 15min, mechanical pressure 0.20MPa), carrying Elongation≤175% under lotus, elongation≤25% after cooling；

7) fire-retardant A class performance: meet A class bunchy combustion requirements in GB/T 19666-2005 standard.

The present embodiment, which is used, will provide high security performance in the occasion of densely populated place.The product is hindered with low smoke and zero halogen Environmental-protecting performance is fired, Halogen is nontoxic in high temperature or burning, ensure that people's life security, will not cause burn into precision equipment Atmospheric environment will not be polluted.

Embodiment 2:

The present embodiment is (participating in attached drawing 2) substantially the same manner as Example 1, the difference is that, it further include having in the present embodiment Temperature-measuring optical fiber, the temperature-measuring optical fiber are abutted with the core, and the temperature-measuring optical fiber and the core are packaged in described together In inhibiting tape.Axially spaced-apart is provided with axial raised stiffener 5 on the restrictive coating, and the protrusion stiffener is along high temperature resistant 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardance control cable center are symmetrical.

Embodiment described above is a kind of preferable scheme of the utility model, is not made to the utility model any Formal limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.

Claims (5)

1. a kind of 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant control cables, it is characterised in that: including several cores, Inhibiting tape and restrictive coating, the core include conductor and insulating layer, and the outside packet of the conductor is equipped with insulating layer, the conductor For solid core or multiply bundle strand copper conductor core, the insulating layer is 125 DEG C of irradiated crosslinking low-smoke and halogen-free flame retardant polyolefin insulating layers, institute There is the outside packet of core to be equipped at least 4 layers of inhibiting tape, the outside packet of the inhibiting tape is equipped with restrictive coating, and the inhibiting tape is Low-smoke non-halogen flame-retardant band, the restrictive coating are that 125 DEG C of irradiation crosslinking halogen-frees are low-smoke flame-retardant polyolefin sheathed.

2. 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant according to claim 1 control cable, feature exists In: the conductor is solid core or five class conductors.

3. 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant according to claim 1 control cable, feature exists In: it further include having temperature-measuring optical fiber, the temperature-measuring optical fiber is abutted with the core, and the temperature-measuring optical fiber and the core are wrapped together It is located in the inhibiting tape.

4. 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant according to claim 1 control cable, feature exists In: the thickness of the insulating layer is at least 1.5 times of the conductor diameter, and it is straight that the thickness of the restrictive coating is at least the conductor 2 times of diameter.

5. 125 DEG C of irradiated crosslinking low-smoke and halogen-free high fire-retardances of high temperature resistant according to claim 1 control cable, feature exists In: axially spaced-apart is provided with axial raised stiffener on the restrictive coating, and the protrusion stiffener is irradiated along 125 DEG C of high temperature resistant It is symmetrical that cross-linking low-smoke halogen-free high fire-retardance controls cable center.