UV Radiation Cross-linking machine

Cross-linking cable

Cross-linked cable is the abbreviation of cross-linked polyethylene insulated cable. Cross-linked cable is suitable for power transmission and distribution lines with power frequency AC voltage of 500KV and below. At present, most high-voltage cables use cross-linked polyethylene insulation.

Cross-linked polyethylene is a cross-linked polyethylene that uses chemical or physical methods to transform linear molecular structure polyethylene into a three-dimensional network structure, thereby greatly improving the thermo-mechanical properties of polyethylene and maintaining excellent Electrical performance.

UV cross-linking machine advantages

The new type of LED UV-irradiated polyolefin cross-linking equipment adopts new technology:

 1. The power consumption of LED lamps is 70% less than that of the old type.

 2. The cross-linking speed is more than twice the original.

 3. Solving the shortcomings of thick insulation.

 4. Less land occupation.

 5. Greatly improving production efficiency. Only small modification on present extrusion production line before take up to accomplish online cross-linking process. 

Process flow summery

The process flow of the UV light irradiated cable cross-linking equipment is to use ultraviolet light as the radiation source, extruding the mixed light-crosslinked polyolefin ingredients on the conductive wire core, and then immediately enter the special irradiation equipment to do light crosslinking in molten state. Then after cooling treatments at different temperatures and other subsequent processing to obtain photo-crosslinked polyolefin insulated wire and cable products.

The UV-irradiated cable cross-linking equipment only needs to be slightly modified on the original ordinary extrusion production line. By adding the upper traction, irradiation box, and electrical control cabinet in a small area to meet the use requirements to produce UV radiation cross-linked polyethylene wire and cable products.

 

Production line flow:

 

 

UV30-12

UV30-16

UV50-14

UV60-24

Light source

LED lamp

Light sources

2*6

2*8

2*7

2*12

Wave length

365nm

Max. diameter

30mm

30mm

50mm

60mm

Irradiation length

1160mm

1460mm

1000mm

1260mm

Production speed

(PE)

M/min. , Colorless

1.5-16mm², 0.7mm

320-300

450-420

140-120

190-160

25-50mm², 0.9mm

150-100

230-200

100-90

120-100

75-90mm², 1.1mm

70-65

120-110

120-150mm², 1.3mm

55-50

80-75

185-240mm², 1.7mm

40-35

60-50

≥300mm², ≥2mm

30

45

Production speed

% of (PE),  Colorless

HFFR

60% (big diameters) – 75% (small diameters)

Black

40%   (only for thickness of 0.7mm)

Blue

80%

Red, yellow, green

98%

Lamp power adjustment

10%-100%

Thermal elongation

50-110%

Permanent deformation

0-10

Cooling method

Water

Lamp life expectation

3 year or 30000 hour  (down to 70% illuminance)

Size (L*W*H, mm)

 

1500*924*1130

1860*1000*1155

1860*820*  1750

1570*940*1700

Total power installation

20kw

23kw

20kw

20kw

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