CN101750232B - Method for slicing cable glands - Google Patents

Abstract

The invention provides a method for slicing a cable joint. The method comprises the following steps: fixedly sleeving the cable joint on a rotating support shaft of a lathe; clamping a cutter on a cutter holder of the lathe; and adjusting the rotation speed of the cable joint and the feeding speed of the cutter to cut the cable joint. The method obtains a slice of the cable joint with even thickness and smooth surface.

Description

Method for slicing cable glands

technical field

The invention relates to a method for slicing cable splices.

Background technique

In the professional field of cables, fault analysis of cable accessories is a very complicated and technically demanding job, especially for cable faults above 110kV. Because there are many reasons for the failure of the running cable accessories, such as external force, overvoltage, internal defects of the accessories, etc., it is often necessary to dissect the faulty cable accessories to analyze the cause of the failure.

The internal structure of the 220kV cable joint (a type of cable accessory) is relatively complicated, and in order to analyze the cause of the failure (the structure of different layers inside the joint), it is necessary to longitudinally section such a huge cable accessory to make the required ring Audition.

Due to the large size of the cable joint and its soft rubber material, cutting with a wallpaper knife, cutting with a guillotine knife, or cutting by hand is prone to the phenomenon of "biased knife". After cutting, the thickness of the slice is uneven, and the surface is Obvious knife marks and unevenness make the slices unusable for experimental analysis.

Contents of the invention

The present invention is made in an effort to overcome the above-mentioned defects of the prior art. The technical problem to be solved by the present invention is to propose a method for slicing cable joints, which can obtain slices of cable joints with uniform thickness and smooth surface.

In order to solve the above technical problems, the present invention provides a method for slicing a cable joint, the method comprising the following steps: fixing the cable joint on a rotating support shaft of a lathe; Clamping a cutter on the frame; and adjusting the rotation speed of the cable connector and the feed speed of the cutter to cut the cable connector.

Preferably, the knife includes a blade and a knife handle clamped on the knife holder, a part of the blade is fixed on the knife handle, and the other part of the blade extends out of the knife handle to cut the cable joint.

Preferably, lubrication is carried out by soap solution during cutting of said cable joint.

Preferably, the cable joint is a cable intermediate joint above 110kV.

The beneficial effect of the present invention is that the present invention uses the cooperation of the blade and the lathe to cut the cable joint, and by adjusting the rotation speed of the cable joint and the feed speed of the blade while ensuring the sharpness and rigidity of the blade, the The obtained slices have a smooth surface and uniform thickness, which can be better applied to experimental analysis.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory in nature, and are intended to provide further explanation of the invention as claimed.

Description of drawings

The accompanying drawings constitute a part of this specification and are provided to help further understanding of the invention. The drawings illustrate some embodiments of the invention and together with the description serve to explain the principles of the invention. In the attached picture:

Fig. 1 is the schematic diagram that realizes device of the present invention;

Fig. 2 is a schematic diagram of a cable intermediate joint (a kind of cable joint);

Fig. 3 is the fan-shaped section schematic diagram that uses method of the present invention to make;

Fig. 4 is a schematic diagram of an annular slice made using the method of the present invention;

Fig. 5 is the breakdown channel and electrical tree found in the circular slice obtained by the present invention;

Fig. 6 is the impurity found in the annular slice obtained by the present invention;

Fig. 7 is the group of bubbles found in the fan-shaped section obtained by the present invention;

Fig. 8 shows the protrusions, impurities, and electrical trees found in the fan-shaped slices obtained by the present invention.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims. The same components are denoted by the same reference numerals in the drawings.

The invention provides a method for slicing a cable joint, the method comprising the following steps:

Fix the faulty cable joint on the rotating support shaft of the lathe;

Clamping a tool on the tool rest of the lathe, wherein the tool includes a blade and a handle of a knife clamped on the tool holder, a part of the blade is fixed on the handle of a knife, and another part of the blade extends out of the handle of a knife to cut the cable, and

Under the condition of ensuring the sharpness and rigidity of the blade, the rotation speed of the cable joint and the feed speed of the cutter are adjusted to cut the cable joint to obtain smooth slices with no knife marks and uniform thickness.

The rigidity of the blade in the present invention is increased by shortening the dimension of the blade protruding from the handle. In the process of implementing this cutting cable joint, it is lubricated by ordinary soap liquid. In addition, the rotation speed of the lathe should be slowed down. If the speed is too fast, the blade will deviate. By adjusting the rotation speed of the lathe and the feed speed, find the best combination of cutting speed point. The cut cable joint is made of soft rubber material. When the method of the present invention is used to cut the intermediate joint of a cable above 110KV, a uniform slice with a thickness of about 5mm can be obtained, and the surface is smooth without knife marks.

The section after the cable joint that the method of the present invention cuts can be circular or fan-shaped section, and wherein can obtain fan-shaped section to circular section cutting again, Fig. 1 has shown the schematic diagram of the device that implements the method of the present invention, and this device shows Cutter 1, and the soft rubber material 3 that is fixed on this device, and soft rubber material is the cable connector shown in Fig. 2.

Figures 3-4 show the ring slices and sector slices obtained. Figure 5 shows the breakdown channel and electrical tree found in the ring slice, Figure 6 shows the impurities found in the ring slice, Figure 7 shows the bubble group found in the fan slice, Figure 8 shows Protrusions, inclusions, and electrical trees found in fan sections.

Although the present invention has been described with reference to the accompanying drawings and preferred embodiments, it will be apparent to those skilled in the art that various modifications and changes can be made to the present invention without departing from the spirit and scope of the present invention. Various modifications and variations of the present invention are covered by the appended claims and their equivalents.

Claims (3)

1. the method for cable splice is cut into slices, is characterized in that, described method comprises the steps:

Described cable splice fixed cover is located in the rotating support shaft of lathe;

Clamping cutter on the knife rest of described lathe; And

Adjust the rotational speed of described cable splice and the feed velocity of cutter, to cut described cable splice;

Described cutter comprises blade and be clamped in the handle of a knife on described knife rest, and a part for described blade is fixed on described handle of a knife, and another part of described blade stretches out described handle of a knife to cut described cable splice;

Regulate described blade, described blade one end is shortened on handle of a knife, to shorten described blade, stretch out the size of described handle of a knife.

2. method according to claim 1, is characterized in that, in the process of the described cable splice of cutting, by liquid soap, is lubricated.

3. according to the method described in aforementioned any one claim, it is characterized in that, described cable splice is cable intermediate joint more than 110kV.

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