CN103904591A - Method for manufacturing 35 kV thermal contraction intermediate cable head - Google Patents

Abstract

The invention relates to the field of high-voltage cables in the metallurgical industry, in particular to a method for manufacturing a 35 kV thermal contraction intermediate cable head. The method comprises the steps of stripping the sheath off a cable, striping the insulation off the cable, wrapping stress relief paster, pressure-welding a conductor, cleaning an insulation surface, fixing a ground lead to steel armor, and wrapping a waterproof layer. According to the 35 kV thermal contraction intermediate cable head, the abnormal obstacle of a distributing line is reduced, tremendous economic benefits are created in multiple aspects, the power failure frequency of the distributing line is reduced, power supply reliability is improved, and long-term reliable operation can be kept.

Description

A kind of 35kV shrinkage intermediate cable head manufacture method

Technical field

The present invention relates to metallurgy industry high-tension cable field, relate in particular to a kind of 35kV shrinkage intermediate cable head manufacture method.

Background technology

The increase in size of cable line was rapid in recent years, it is not high that but cable mid head is made into power, accident is frequent, according to operational administrative regulation, after the investment of new cable line start, should there is the trial run stage in 1 year time limit, the cable intermediate joint guarantee period is 5 years, the construction quality problem occurring between trial run period, and unit in charge of construction must be responsible for processing, so the technique that improves the making of 35kV shrinkage intermediate cable head is necessary.

Summary of the invention

The object of the present invention is to provide a kind of 35kV shrinkage intermediate cable head manufacture method, solve the defect that prior art exists.

In order to realize above-mentioned object, adopt following technical scheme: a kind of 35kV shrinkage intermediate cable head manufacture method, it is characterized in that, concrete grammar comprises the steps:

S1. by two cables to directly, overlapping 300mm, determine the center of lap, measure respectively long end 900mm and short end 700mm from center, divest oversheath, retain the firm armour of 30mm, colligation ground wire, retains 30mm sheath, respectively measures 215mm from termination to both sides, divest copper shield, fracture is fixing with PVC band;

S2. retain 50mm semiconductive layer, all the other divest, measure 1/2 pipe range in core end and add 5mm, divest insulation, clean insulating surface, at semi-conductive layer and the wrapped stress evacuating glue of insulating barrier exchange place, both sides respectively overlap 10mm, are respectively inserted in mutually insulated tube in long end, are respectively inserted in mutually 1, copper shield net in short end, be inserted in tube connector, carry out crimping;

S3. clean insulating surface, after the solvent seasoning of main insulation surface cleaning, spreads upon semiconductive shielding layer and main insulation intersection by P55/1 mixer, and remaining is evenly coated on main insulation surface and tube connector;

S4. measure size between isolation port, the distance of confirming two ends semi-conductor electricity layer is less than 413mm, then by size 1/2, on taking over, determine virtual center point, in copper shield on one side, find out size checkpoint by 240mm, carry out mark with PVC phase colour band, insulated tube, to good mark place, is taken out counterclockwise to core rope and made shrinkage insulation shrinkage;

S5. with PVC tape, copper mesh is overlapped to colligation in adapter body, two ends are fixed on copper shield band with constant force spring, two ends are fixed on copper shield band with constant force spring, with Scotch23 adhesive tape half is overlapping, spring is covered, with PVC tape cable three core colligations together, wrapped one deck Scotch2228 adhesive tape;

S6. earth connection two ends are fixed on firm armour with constant force spring, the part reflexed being overlapped on oversheath returns to be fixed on firm armour, with Scotch23 adhesive tape half is overlapping, spring is lived together with just armour one overlay, make the moisture seal of joint of Scotch2228 adhesive waterproof tape, overlapping wrapped to other end sheath 60mm place from 60mm half on the sheath of one end;

S7. from first overlapping wrapped Armorcast belt armour of one end 60mm adhesive waterproof tape to other end 60mm adhesive waterproof tape.

Compared with prior art, 35kV shrinkage intermediate cable head of the present invention has reduced the abnormal obstacle of distribution line, has also created in many aspects great economic benefit simultaneously, has reduced the frequency of power cut of distribution line, improve power supply reliability, can keep moving reliably and with long-term.

Embodiment

Provide a most preferred embodiment below:

A kind of 35kV shrinkage intermediate cable head manufacture method, is characterized in that, concrete grammar comprises the steps:

S1. by two cables to directly, overlapping 300mm, determine the center of lap, measure respectively long end 900mm and short end 700mm from center, divest oversheath, retain the firm armour of 30mm, colligation ground wire, retains 30mm sheath, respectively measures 215mm from termination to both sides, divest copper shield, fracture is fixing with PVC band;

S2. retain 50mm semiconductive layer, all the other divest, measure 1/2 pipe range in core end and add 5mm, divest insulation, clean insulating surface, at semi-conductive layer and the wrapped stress evacuating glue of insulating barrier exchange place, both sides respectively overlap 10mm, are respectively inserted in mutually insulated tube in long end, are respectively inserted in mutually 1, copper shield net in short end, be inserted in tube connector, carry out crimping;

S3. clean insulating surface, after the solvent seasoning of main insulation surface cleaning, spreads upon semiconductive shielding layer and main insulation intersection by P55/1 mixer, and remaining is evenly coated on main insulation surface and tube connector;

S4. measure size between isolation port, the distance of confirming two ends semi-conductor electricity layer is less than 413mm, then by size 1/2, on taking over, determine virtual center point, in copper shield on one side, find out size checkpoint by 240mm, carry out mark with PVC phase colour band, insulated tube, to good mark place, is taken out counterclockwise to core rope and made shrinkage insulation shrinkage;

S5. with PVC tape, copper mesh is overlapped to colligation in adapter body, two ends are fixed on copper shield band with constant force spring, two ends are fixed on copper shield band with constant force spring, with Scotch23 adhesive tape half is overlapping, spring is covered, with PVC tape cable three core colligations together, wrapped one deck Scotch2228 adhesive tape;

S6. earth connection two ends are fixed on firm armour with constant force spring, the part reflexed being overlapped on oversheath returns to be fixed on firm armour, with Scotch23 adhesive tape half is overlapping, spring is lived together with just armour one overlay, make the moisture seal of joint of Scotch2228 adhesive waterproof tape, overlapping wrapped to other end sheath 60mm place from 60mm half on the sheath of one end;

S7. from first overlapping wrapped Armorcast belt armour of one end 60mm adhesive waterproof tape to other end 60mm adhesive waterproof tape.

The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (1)

1. a 35kV shrinkage intermediate cable head manufacture method, is characterized in that, comprises the steps:

S1. by two cables to directly, overlapping 300mm, determine the center of lap, measure respectively long end 900mm and short end 700mm from center, divest oversheath, retain the firm armour of 30mm, colligation ground wire, retains 30mm sheath, respectively measures 215mm from termination to both sides, divest copper shield, fracture is fixing with PVC band;

S2. retain 50mm semiconductive layer, all the other divest, measure 1/2 pipe range in core end and add 5mm, divest insulation, clean insulating surface, at semi-conductive layer and the wrapped stress evacuating glue of insulating barrier exchange place, both sides respectively overlap 10mm, are respectively inserted in mutually insulated tube in long end, are respectively inserted in mutually 1, copper shield net in short end, be inserted in tube connector, carry out crimping;

S3. clean insulating surface, after the solvent seasoning of main insulation surface cleaning, spreads upon semiconductive shielding layer and main insulation intersection by P55/1 mixer, and remaining is evenly coated on main insulation surface and tube connector;

S4. measure size between isolation port, the distance of confirming two ends semi-conductor electricity layer is less than 413mm, then by size 1/2, on taking over, determine virtual center point, in copper shield on one side, find out size checkpoint by 240mm, carry out mark with PVC phase colour band, insulated tube, to good mark place, is taken out counterclockwise to core rope and made shrinkage insulation shrinkage;

S5. with PVC tape, copper mesh is overlapped to colligation in adapter body, two ends are fixed on copper shield band with constant force spring, two ends are fixed on copper shield band with constant force spring, with Scotch23 adhesive tape half is overlapping, spring is covered, with PVC tape cable three core colligations together, wrapped one deck Scotch2228 adhesive tape;

S6. earth connection two ends are fixed on firm armour with constant force spring, the part reflexed being overlapped on oversheath returns to be fixed on firm armour, with Scotch23 adhesive tape half is overlapping, spring is lived together with just armour one overlay, make the moisture seal of joint of Scotch2228 adhesive waterproof tape, overlapping wrapped to other end sheath 60mm place from 60mm half on the sheath of one end;

S7. from first overlapping wrapped Armorcast belt armour of one end 60mm adhesive waterproof tape to other end 60mm adhesive waterproof tape.