CN210325297U

CN210325297U - Low-halogen crosslinking line with high flame retardance

Info

Publication number: CN210325297U
Application number: CN201921120541.2U
Authority: CN
Inventors: 贺云峰
Original assignee: Xinya Electronics Co ltd
Current assignee: Xinya Electronics Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-04-14
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a low halogen crosslinked wire that fire resistance is high, including three wire and surrounding layer, three wire is located the surrounding layer, and all the winding has two-sided synthetic mica tape on the three wire, the equal cladding has first shielding layer on the two-sided synthetic mica tape, the cladding has first crosslinked polyethylene layer on the first shielding layer, the winding has low smoke and zero halogen fire-retardant band on the first crosslinked polyethylene layer, the surrounding layer includes outer jacket, metallic braid, cooling fire barrier, waterproof layer, second shielding layer and the second crosslinked polyethylene layer that sets up in order from the extroversion in. The utility model discloses can effectively resist the corruption of environment to promote the wear resistance of body, can effectively carry out fire-retardant moreover, avoid leading to the condition that the cable appears excessive burning because of the high temperature or firing, can effectively resist external disturbance, guarantee signal transmission's quality.

Description

Low-halogen crosslinking line with high flame retardance

Technical Field

The utility model relates to a crosslinked line technical field especially relates to a low halogen crosslinked line that fire resistance is high.

Background

Crosslinked hypohalous wire is a power transmission cable used in locations with a large population concentration, such as: the theatre, the market, the school, places such as office building, it is insulating to play electric power with crosslinked polyethylene generally, the sheath adopts no halogen-free low smoke material, thereby make things convenient for the staff to use, avoid appearing the electric shock condition, general cable is plastic material more, when burning, delay easily or produce the poison cigarette and cause secondary damage, if adopt this kind of no halogen-free low smoke cable, the difficult delay of cable is fired when starting a fire, and do not have harmful gas such as chlorine, and even it is close to the burning things which may cause a fire, also release a small amount of flue gas, guarantee the security of using, and help the protection personnel.

The low-halogen cross-linked wire in the prior art is generally formed by simply winding a circle of cross-linked polyethylene outside a wire and then coating the cross-linked polyethylene in a sheath made of a halogen-free low-smoke material, so that the wire cannot be well protected, the wire is easy to damage, the durability of a product is reduced, the flame retardant effect cannot be well realized, and the wire is not beneficial to use.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a low-halogen crosslinking line with high flame retardance.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a low halogen crosslinked wire that fire resistance is high, includes three wire and surrounding layer, three wire is located the surrounding layer, and it has two-sided synthetic mica tape all to twine on the three wire, it has first shielding layer all to wrap on the two-sided synthetic mica tape, the cladding has first crosslinked polyethylene layer on the first shielding layer, the winding has low smoke and zero halogen fire-retardant band on the first crosslinked polyethylene layer, the surrounding layer includes outer jacket, woven metal layer, cooling fire barrier layer, waterproof layer, second shielding layer and the second crosslinked polyethylene layer that sets up in order from the extroversion, second crosslinked polyethylene in situ packs has the mineral filling rope, evenly be equipped with three asbestos filling pipe in the mineral filling rope etc. adopt the gluing mode to connect between the adjacent two-layer of surrounding layer.

Preferably, three hollow hoses penetrate through the mineral filling rope.

Preferably, the outer side of the outer protective layer is further coated with an anti-corrosion coating layer.

Preferably, the lead is made of galvanized copper wire with the diameter of 1.5mm-2.5 mm.

Preferably, the overlapping rate of the double-sided synthetic mica tape is not less than 30%.

Preferably, the outer sheath is made of a halogen-free crosslinkable resin composition.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the matching of the low-smoke halogen-free flame-retardant wrapping tape, the cooling fire-insulating layer, the metal braid layer and other components, the anti-skid and anti-friction effects can be effectively realized, the service life can be prolonged, the flame retardance can be effectively realized, the excessive damage of cables caused by combustion can be avoided, and the signal transmission can be better ensured;

2. through the matching of the first shielding layer, the second shielding layer, the anti-corrosion coating layer, the hollow hose and other components, the shielding can be effectively carried out, the external interference is avoided, the safety of signal transmission is ensured, the quality of signal transmission is improved, the cable can be effectively protected, and the cable damage caused by corrosion is avoided;

to sum up, the utility model discloses can effectively resist the corruption of environment to promote the wear resistance of body, can effectively carry out fire-retardant moreover, avoid leading to the condition that the cable appears excessive burning because of the high temperature or firing, can effectively resist external disturbance, guarantee signal transmission's quality.

Drawings

FIG. 1 is a schematic view of a wire structure of a low-halogen cross-linked wire with high flame retardancy according to the present invention;

FIG. 2 is a schematic view of a second crosslinked polyethylene layer structure of a low-halogen crosslinked yarn with high flame retardancy provided by the present invention;

FIG. 3 is a cross-sectional view of a low-halogen cross-linked line with high flame retardancy according to the present invention;

fig. 4 is a schematic structural view of a first crosslinked polyethylene layer of a low-halogen crosslinked yarn with high flame retardancy.

In the figure: 1 wire, 2 two-sided synthetic mica tape, 3 first shielding layers, 4 first crosslinked polyethylene layers, 5 low smoke and zero halogen flame retardant wrapping tapes, 6 second crosslinked polyethylene layers, 7 second shielding layers, 8 waterproof layers, 9 cooling fire-proof layers, 10 metal braiding layers, 11 outer protective layers, 12 anticorrosive coating layers, 13 mineral filling ropes, 14 asbestos filling pipes and 15 hollow hoses.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a low-halogen crosslinking line with high flame retardancy comprises three wires 1 and an outer layer, wherein the wires 1 are made of galvanized copper wires with the diameter of 1.5mm-2.5mm, which can ensure efficient and stable signal transmission, effectively reduce loss during signal transmission and improve transmission efficiency, the three wires 1 are positioned in the outer covering layer, double-sided synthetic mica tapes 2 are wound on the three wires 1, the double-sided synthetic mica tapes 2 are wound outside the wires 1 in a unidirectional spiral manner, and the high-temperature resistance of the cable is enhanced by using the insulation and heat insulation performance of mica.

The utility model discloses in, the rate of taking of two-sided synthetic mica tape 2 is not less than 30%, improve its insulating and thermal-insulated ability, further guarantee the high temperature resistance ability of cable, the equal cladding has first shielding layer 3 on two-sided synthetic mica tape 2, adopt copper wire mesh grid or galvanized steel wire net of weaving density 80% -90%, its effect that has electromagnetic interference resistance has increased the tensile strength of cable again, the cladding has first crosslinked polyethylene layer 4 on first shielding layer 3, various chemical solvent of resistance has, relatively more stable in various corrosive media on every side, protection wire 1 that can be better, improve its adaptability.

The utility model discloses in, the winding has low smoke and zero halogen fire-retardant band 5 on the first crosslinked polyethylene layer 4, and the material of low smoke and zero halogen fire-retardant band 5 is compound low smoke and zero halogen fire-retardant material, has excellent mechanical physical properties, and environmental stress cracking resistance can be good, has good wearability, more can bear concentrated mechanical stress than PVC and PE, has protected the cable inner core more effectively.

In the utility model, the outer cladding comprises an outer protective layer 11, a metal braid layer 10, a cooling fire-proof layer 9, a waterproof layer 8, a second shielding layer 7 and a second crosslinked polyethylene layer 6 which are arranged from outside to inside, the outer protective layer 11 is made of a halogen-free crosslinked resin composition, the outer side of the outer protective layer 11 is coated with an anti-corrosion coating layer 12, which can play a role of high-efficiency corrosion resistance, improve the application range of the cable and the practicability, the second shielding layer 7 adopts a copper wire mesh grid with 80-90% of weaving density or a galvanized steel wire mesh, which has the function of electromagnetic interference resistance and increases the tensile strength of the cable, the cooling fire-proof layer 9 is a low-smoke halogen-free flame-retardant polyolefin oxygen-proof layer with an oxygen index larger than 38, when burning in fire, the material can separate out moisture to reduce the environmental temperature and form an alumina crust which can not melt and can not burn the cable core to isolate the contact with, the cable of burning will extinguish by oneself, when having improved the fire-retardant rank of cable, plays the cooling and separates the effect of fire, and metallic braid 10 both can play the effect of shielding and can make the heat of conducting out from high temperature resistant fire-retardant layer pass through the quick effluvium in the space in the metallic braid 10, has reduced the inside temperature of cable, still has excellent anti friction ability, helps resisting the friction, avoids damaging inside part.

The utility model discloses in, the intussuseption of second crosslinked polyethylene layer 6 is filled with mineral filling rope 13, has fine thermal-insulated, flame retardant efficiency, and equidistant three asbestos filling pipe 14 that is equipped with in the mineral filling rope 13 runs through on the mineral filling rope 13 and is equipped with three cavity hose 15 to can effectively reduce the weight of cable, more facilitate the use, adopt the gluing mode to connect between the adjacent two-layer of surrounding layer.

In the utility model, when in use, the anti-corrosion coating layer 12 can effectively resist the external corrosion, thereby being convenient for being applicable to various environments, and being helpful to prolong the service life, the outer protective layer 11 and the metal braid layer 10 can effectively resist wear, protect the internal structure, and can better protect through the cooling fire-insulating layer 9 and the waterproof layer 8, promote the fire resistance and the waterproof performance of the product, avoid the interference of external signals through the second shielding layer 7, ensure the quality of signal transmission, through the cooperation of the second cross-linked polyethylene layer 6, the mineral filling rope 13, the low-smoke halogen-free flame-retardant wrapping tape 5, the first cross-linked polyethylene layer 4 and the first shielding layer 3, can better promote the flame retardance of the cable, resist the interference of external signals, ensure the signal transmission capability of the cable, and reduce the weight of the cable through the asbestos filling pipe 14 and the hollow hose 15, the use is convenient, through two-sided synthetic mica tape 2 can effectively insulate and promote fire behaviour, wire 1 conveniently transmits the signal.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A low-halogen crosslinking wire with high flame retardance comprises three conducting wires (1) and an outer coating, and is characterized in that: the three wires (1) are positioned in the outer covering layer, double-sided synthetic mica tapes (2) are wound on the three wires (1), the double-sided synthetic mica tapes (2) are respectively coated with a first shielding layer (3), the first shielding layer (3) is coated with a first crosslinked polyethylene layer (4), a low-smoke halogen-free flame-retardant wrapping tape (5) is wound on the first cross-linked polyethylene layer (4), the outer cladding comprises an outer protective layer (11), a metal woven layer (10), a cooling fire-insulating layer (9), a waterproof layer (8), a second shielding layer (7) and a second crosslinked polyethylene layer (6) which are sequentially arranged from outside to inside, the second crosslinked polyethylene layer (6) is filled with mineral filling ropes (13), the mineral filling rope (13) is internally and uniformly provided with three asbestos filling pipes (14), and two adjacent layers of the outer cladding are connected in an adhesive mode.

2. The low-halogen crosslinking line with high flame retardancy as claimed in claim 1, wherein three hollow hoses (15) are penetrated on the mineral filling rope (13).

3. The low-halogen crosslinking wire with high flame retardancy according to claim 1, wherein the outer sheath (11) is further coated with an anticorrosive coating layer (12).

4. The low-halogen crosslinking wire with high flame retardancy according to claim 1, wherein the wire (1) is made of a galvanized copper wire with a diameter of 1.5mm to 2.5 mm.

5. The low-halogen crosslinking line with high flame retardancy as claimed in claim 1, wherein the double-sided synthetic mica tape (2) has a lap ratio of not less than 30%.

6. The low-halogen crosslinked yarn with high flame retardancy according to claim 1, wherein the outer sheath (11) is made of a halogen-free crosslinkable resin composition.