CN102545104A - Manufacturing process for improving 10 kV cold-shrinkage cable ends - Google Patents

Abstract

The invention relates to a manufacturing process for improving 10 kV cold-shrinkage cable ends. The technical scheme is as follows: comprising the following steps of (1), putting a waterproof cable well in a soft soil layer; filling sandy soil in the waterproof cable well; setting a concrete layer and a sidewalk layer at the top of the waterproof cable well; (2), in order to prevent from damaging cable main insulation to cause cable breakdown due to improper process operation of stripping an outer semiconductor layer, the following measures are adopted: A), in order to prevent the inner insulation layer from being damaged, using a cutting method to cut the semiconductor layer with thickness of 50-80 microns during the stripping of the outer semiconductor layer. The process has the advantages as follows: the abnormal failure of a distribution line is reduced, and great economic and social benefits in multiple aspects are created, power failure time of the distribution line is reduced, the power supplying reliability is improved and loss of the user, caused by power failure, is reduced.

Description

Improve 10kV shrinkage manufacturing cable head technology

Technical field:

The present invention relates to a kind of manufacturing cable head method, particularly a kind of raising 10kV shrinkage manufacturing cable head technology.

Background technology:

Fast development along with city's economic construction; And the continuous increase of project proposal for investment; Factory building and residenter house constantly enlarging make the wasteland of this city constantly obtain exploitation, and the increase in size of cable line was rapid in recent years, and present electric 10kV cable length has reached very long mileage.It is not high that but cable mid head is made into power, and accident is frequent; Stipulate according to operational administrative: after 10kV new cable line start puts into operation, should be arranged the trial run stage in 1 year time limit, the cable intermediate joint guarantee period is 5 years.The construction quality problem that between trial run period, occurs, unit in charge of construction must be responsible for processing.So the technology that improves 10kV shrinkage manufacturing cable head is necessary.Have and the existing cable medial head is made into the not high reason of power: 1, practical experience is few, and operative skill is low; 2, level of ground water is high, and soil alkaline content is high; 3, outer semiconducting layer peel off improper.

Summary of the invention:

The object of the invention is exactly the above-mentioned defective that exists to prior art, and a kind of raising 10kV shrinkage manufacturing cable head technology is provided.

Its technical scheme is: be made up of following making step:

(1) at the built-in water-proof cable well of weak soil layer, filling sandy soil in the water-proof cable well are provided with concrete layer, pavement layer at the top of water-proof cable well;

(2) inappropriate technology in order to prevent to peel off outer semiconductor layer, injury cable main insulation and cause cable breakdown, take following measure:

A) method: the thickness of semiconductor layer is between the 50-80 micron, and is in the semiconductive layer stripping process, injury-free for making inner insulating layer outside, adopts the method for imposing uniformity without examining individual cases to dissect;

B) position and size: the degree of depth of following cutter is between the 1/2-1/3 of semiconductor layer, and the centre do not stop, and takes the air line and once accomplishes;

C) use the cable knife size: adjustment cable blade expose size, sword is thick to be 1000 microns, adjusts to 60 microns through the knife edge of cable knife and just can satisfy above condition with interior.

The invention has the beneficial effects as follows: the unusual obstacle that has reduced distribution line; Great economic benefit and social benefit have also been created simultaneously in many aspects; Reduce the frequency of power cut of distribution line, improved power supply reliability, reduced the loss that brings because of power failure for users.

Description of drawings:

Accompanying drawing 1 is the sketch map of a kind of water-proof cable well of the present invention when implementing;

Accompanying drawing 2 is another kind of water-proof cable well of the present invention sketch mapes when implementing;

Among the last figure: concrete layer 1, cable 2, pavement 3, weak soil layer 4, water-proof cable well 5, cover plate 6, sandy soil 7.

Embodiment:

In conjunction with accompanying drawing 1-2, the present invention is done further description:

The present invention is made up of following making step:

(1) at weak soil layer 4 built-in water-proof cable well 5, filling sandy soil 7 in the water-proof cable well 5 are provided with concrete layer 1, pavement layer 3 at the top of water-proof cable well 5, and another kind of scheme is to be provided with cover plate 6 at the top of water-proof cable well 5, can conveniently open.

(2) inappropriate technology in order to prevent to peel off outer semiconductor layer, injury cable main insulation and cause cable breakdown, take following measure:

A) method: the thickness of semiconductor layer is between the 50-80 micron, and is in the semiconductive layer stripping process, injury-free for making inner insulating layer outside, adopts the method for imposing uniformity without examining individual cases to dissect;

B) position and size: the degree of depth of following cutter is between the 1/2-1/3 of semiconductor layer, and the centre do not stop, and takes the air line and once accomplishes;

C) use the cable knife size: adjustment cable blade expose size, sword is thick to be 1000 microns, adjusts to 60 microns through the knife edge of cable knife and just can satisfy above condition with interior.

Consolidate measure

1, formulate detailed line inspection plan, strengthen the tour work of circuit, divide the work the people, everyone has responsibility, and pressure improves the line inspection quality conscientiously to the people.Patrol on the basis in example, strengthen that the spy patrols, patrol dynamics night, in time finds circuit hidden danger, eliminate all unsafe factors that possibly cause that unusual obstacle takes place circuit in rudiment.

2, strengthen equipment control, the equipment acceptance of particularly carrying out the new user of going up send the electrician to do, and carries out an acceptance inspection in strict accordance with acceptance criteria, for the user that can not reach acceptance criteria, will not send without exception.Reduce to minimum to the unusual obstacle of the circuit that causes because of customer equipment.

3, cable direct-burried method for prefabricating is included in the checking and accepting, carried out as standard.

Claims (1)

1. one kind is improved 10kV shrinkage manufacturing cable head technology, it is characterized in that being made up of following making step:

(1) at the built-in water-proof cable well of weak soil layer, filling sandy soil in the water-proof cable well are provided with concrete layer, pavement layer at the top of water-proof cable well;

(2) inappropriate technology in order to prevent to peel off outer semiconductor layer, injury cable main insulation and cause cable breakdown, take following measure:

A) method: the thickness of semiconductor layer is between the 50-80 micron, and is in the semiconductive layer stripping process, injury-free for making inner insulating layer outside, adopts the method for imposing uniformity without examining individual cases to dissect;

B) position and size: the degree of depth of following cutter is between the 1/2-1/3 of semiconductor layer, and the centre do not stop, and takes the air line and once accomplishes;

C) use the cable knife size: adjustment cable blade expose size, sword is thick to be 1000 microns, adjusts to 60 microns through the knife edge of cable knife and just can satisfy above condition with interior.

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