JP2015186288A - Insulation cover and attachment method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation cover which enables a sufficient amount of insulation putty to adhere to an electric wire connection part with which conductors of a pair of electric wires are connected by a compressed sleeve and enables sufficient insulation process to be performed to the electric wire connection part.SOLUTION: An insulation cover includes: a cylindrical cover body 2; insulation putty 3 filling an inner peripheral surface of the cover body 2; and a sheet 4 covering the insulation putty 3. At least a part of the sheet 4 is removed or broken.

Description

  The present invention relates to an insulating cover for protecting an electric wire connecting portion to which a pair of conductors are connected by a compressed sleeve, and an insulating cover mounting method.

  For example, when replacing equipment such as pole transformers or cutouts (breakers) installed on utility poles, a pull-down line that branches from a high-voltage distribution line by an indirect hot wire method using a hot stick (insulation operating rod) Is disconnected. Then, in order to reconnect the cut underline to the pole transformer or the cutout, using a hot stick, the covering of the cut underline is peeled off, and a pair of conductors are opened at both ends of the compression sleeve. The compression sleeve is compressed with the pair of conductors butted from each other, and the pair of conductors are electrically connected (so-called terminal treatment).

  For example, as shown in FIG. 6, this type of insulating cover 100 includes a pair of half-cracked cover main bodies 101 and 101 that are combined with each other, and an insulating putty 102 that is filled on the inner surfaces of the pair of cover main bodies 101 and 101. (For example, refer to Patent Document 1).

  According to such an insulating cover, the pair of cover main bodies 101 and 101 are combined and attached to the wire connecting portion where the conductors of the pair of wires are connected by the compressed sleeve. At this time, the exposed insulating putty adheres to the wire connection portion, thereby protecting the wire connection portion.

Japanese Patent Laid-Open No. 11-136829

  By the way, the position of the insulating cover 100 is determined when the pair of cover main bodies 101 and 101 are combined and attached to an appropriate place with respect to the electric wire connecting portion in which the conductors of the pair of electric wires are connected by the compressed sleeve. It may shift.

  For this reason, the pair of cover main bodies 101, 101 is replaced from the position shifted to an appropriate position. At this time, since the insulating putty is exposed on the inner surfaces of the pair of cover main bodies 101, 101, the insulating putty 102 Adheres to locations other than the wire connection portion. Therefore, there is a problem that the amount of the insulating putty 102 is reduced and sufficient insulation treatment cannot be performed on the wire connecting portion.

  Therefore, in view of the above problems, the present invention provides an insulating cover and an insulating cover in which a necessary and sufficient insulating putty can be attached to the electric wire connecting portion and sufficient electric insulation treatment can be performed on the electric wire connecting portion. It aims at providing the attachment method of.

  An insulating cover according to the present invention includes a cylindrical cover main body, an insulating putty filled in the inner peripheral surface of the cover main body, and a sheet covering the insulating putty, and at least a part of the sheet is removed or broken It is characterized by being.

  According to such a configuration, since the cylindrical cover body is inserted through the electric wire, it is not necessary to combine a pair of cover bodies as in the conventional case.

  For this reason, there is no position shift at the time of attaching a cover body with respect to the electric wire connection part to which the conductor of a pair of electric wires was connected by the compressed sleeve, and an insulating cover is certainly arrange | positioned in the said electric wire connection part in an appropriate position. be able to.

  Further, since the insulating putty is covered with the sheet, the insulating putty does not adhere to other parts during insertion. Further, when the sheet is broken, a necessary and sufficient insulating putty can be attached to the wire connecting portion, and a sufficient insulation treatment can be performed on the wire connecting portion.

  In this case, it is preferable that the sheet is pulled out from the cover body.

  According to such a configuration, after the cover main body is arranged in the electric wire connecting portion, if the sheet is pulled out, the insulating putty is exposed, and the insulating putty is expanded in the electric wire connecting portion.

  The cover body preferably has a plurality of protrusions on the inner peripheral surface.

  According to such a configuration, the sheet is broken by the protrusion, and the insulating putty can be expanded at the wire connecting portion.

  Further, an insulating cover mounting method according to another invention uses an insulating cover including a cylindrical cover body, an insulating putty filled in the inner peripheral surface of the cover body, and a sheet covering the insulating putty. The cover body is inserted into the covered portion of the wire, and the inserted cover body is moved from the covered portion of one wire to the wire connecting portion where the conductors of the pair of wires are connected by the compressed sleeve, and then compressed. Then, at least a part of the sheet is removed or broken.

  According to such a configuration, it is possible to efficiently perform the insulation treatment work on the wire connection portion in which the conductors of the pair of wires are connected by the compressed sleeve.

  As described above, according to the present invention, the necessary and sufficient insulating putty can be attached to the wire connection portion to which the conductors of the pair of wires are connected by the compressed sleeve, and the wire connection portion can be attached to the wire connection portion. Sufficient insulation treatment can be performed.

1A and 1B are diagrams showing an insulating cover according to an embodiment of the present invention. FIG. 1A is a cut front view of the insulating cover, and FIG. 1B is a cut side view of FIG. It is. FIG. 2 is a diagram illustrating a method of attaching the insulating cover according to the embodiment, in which the cover main body is inserted into the covering portion of one electric wire, and the inserted cover main body is compressed from the covering portion of the one electric wire. It is a figure which shows the state moved to the electric wire connection part to which the conductor of a pair of electric wire was connected by the sleeve. FIG. 3A is a cut front view showing a state in which the insulating cover is disposed in the electric wire connecting portion, and FIG. 3B is a cross-sectional view showing a state in which the insulating cover is compressed. FIG. 4 is a cross-sectional view showing a modification of the sheet of the insulating cover according to the embodiment. FIG. 5 is a cross-sectional view showing a modification of the cover body of the insulating cover according to the embodiment. FIG. 6 is a view showing a conventional insulating cover.

An insulating cover according to an embodiment of the present invention will be described with reference to FIGS.
The insulating cover 1 according to the present embodiment has a cylindrical cover body 2 and an inner peripheral surface of the cover body 2 as shown in FIGS. 1 (a), 1 (b) to 3 (a), (b). A filled insulating putty 3 and a sheet 4 covering the insulating putty 3 are provided.

  The cover main body 2 includes a main body portion 2a made of an insulating synthetic resin material in a cylindrical shape, and both end portions 2b and 2b formed in a tapered shape. The size of the inner diameter of the main body 2a is such that the covering portion C1 of the electric wire C can be inserted. The length L of the main body 2a is a length that covers the conductors C2 and C2 and the covering portions C1 and C1 of the pair of electric wires C and C that are abutted, and has a length that can be gripped by an indirect hot wire tool (Yatco). ing.

  The insulating putty 3 is filled only in the inner peripheral surface of the main body 2a of the cover main body 2. The compressed sleeve S is an amount that can sufficiently insulate the wire connection portion 20 to which the conductors C2 and C2 of the pair of wires C and C are connected.

  The sheet 4 is provided in a cylindrical shape so as to cover the insulating putty 3. At least a part of the sheet 4 is broken when the cover body 2 is compressed. As a material of the sheet 4, for example, an oblate (a sheet that breaks with a little pressure) is used.

  Next, how the insulating cover 1 according to the present invention is used will be described. First, the cover body 2 of the insulating cover 1 is inserted in advance into the covering portion C1 of one electric wire C. In this state, since the sheet 4 covers the insulating putty 3, it does not adhere to the covered portion C1 of the electric wire C.

  Next, the conductors C2 and C2 of the pair of electric wires C and C are inserted from the openings at both ends of the sleeve S, and the conductors C2 and C2 of the pair of electric wires C and C are brought into contact with each other inside the sleeve S. S is compressed, the conductors C2 and C2 of the pair of electric wires C and C are connected, and the electric wire connecting portion 20 is formed.

  And after moving the inserted cover main body 2 from the covering part C1 of one electric wire C to the electric wire connection part 20 to which the conductors C2 and C2 of the pair of electric wires C and C are connected by the compressed sleeve S, The main body 2a of the cover main body 2 is compressed.

  Thereby, at least a part of the sheet 4 is broken, the insulating putty 3 of the cover main body 2 flows out, and the insulating putty 3 is sufficiently adhered to the electric wire connecting portion 20, so that the insulating process is performed.

  Thus, according to the present invention, the cylindrical cover body 2 is inserted into the covering portion C1 of the electric wire C, and the conductors of the pair of electric wires C and C are compressed from the covering portion C1 of the electric wire C by the compressed sleeve S. Since it moves to the electric wire connection part 20 to which C2 and C2 were connected, there is no position shift at the time of attaching the cover main body 2 with respect to this electric wire connection part 20, and arrange | position the cover main body 2 to the electric wire connection part 20 reliably. And replacement is not required as in the prior art.

  In addition, since the insulating putty 3 is covered with the sheet 4, the necessary and sufficient insulating putty 3 can be attached to the wire connecting portion 20, and sufficient insulation treatment is performed on the wire connecting portion 20. Can do. With the compressed sleeve S, it is possible to efficiently perform an insulation treatment operation on the wire connection portion 20 to which the conductors C2 and C2 of the pair of wires C and C are connected.

  In addition, this invention is not limited to the said embodiment, Of course, a various change can be added in the range which does not deviate from the summary of this invention.

  For example, in the above embodiment, the insulating putty 3 is covered with the sheet 4, but the sheet 4 may be pulled out from the cover body 2. For example, as shown in FIG. 4, both end portions 4 a and 4 a of the sheet 4 are extended from both end portions 2 b and 2 b of the cover body 2 to the end portion of the covering portion C <b> 1 of the electric wire C. And after arrange | positioning the cover main body 2 in the said electric wire connection part 20, the one end part 4a of the sheet | seat 4 which protruded from the both ends 2b and 2b of the cover main body 2 is pulled, and the sheet | seat 4 is pulled out from the cover main body 2. For example, the insulating putty 3 can be expanded in the electric wire connecting portion 20.

  Moreover, in the case of the said embodiment, although the cover main body 2 was made into the cylindrical shape, you may make it provide the some protrusion 21 in the internal peripheral surface of the cover main body 2. FIG. For example, as shown in FIG. 5, a plurality of protrusions 21 are provided along the circumferential direction of the wire connecting portion 20. By doing so, when the cover body 2 is compressed, the plurality of protrusions 21 provided in the circumferential direction pierce the sheet 4, and a part of the sheet 4 is broken, so that the insulating putty 3 is attached to the wire connection portion 20. Can be expanded.

  In the case of the above embodiment, the sheet 4 is broken when the cover body 2 is compressed. However, the sheet 4 is provided with general breaking means such as perforations and half cuts. You may make it easy to fracture.

  DESCRIPTION OF SYMBOLS 1 ... Insulation cover, 2 ... Cover main body, 20 ... Electric wire connection part, 21 ... Protrusion, 3 ... Insulation putty, 4 ... Sheet, 4a ... End of sheet, C ... Electric wire, C1 ... Electric wire covering part, C2 ... Electric wire Conductor, S ... sleeve

Claims (4)

A cylindrical cover body, an insulating putty filled in the inner peripheral surface of the cover body, and a sheet covering the insulating putty,
An insulating cover, wherein at least a part of the sheet is removed or broken.   The insulating cover according to claim 1, wherein the sheet is pulled out from the cover main body.   The insulating cover according to claim 1, wherein the cover body is provided with a plurality of protrusions on an inner peripheral surface. Using an insulating cover comprising a cylindrical cover body, an insulating putty filled on the inner peripheral surface of the cover body, and a sheet covering the insulating putty,
After the cover body is inserted into the covering portion of one electric wire, the inserted cover main body is moved from the covering portion of the one electric wire to the electric wire connecting portion where the conductors of the pair of electric wires are connected by the compressed sleeve, A method for attaching an insulating cover, wherein at least a part of the sheet is removed or broken by compression.

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