JP2006216514A - Insulator covering member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an insulator covering member capable of surely preventing both of the grounding fault due to salt damage and the grounding fault due to droppings of birds over a long time. <P>SOLUTION: This insulator covering member 10 is detachably provided on an insulator 1 constituting at least a part of an electric wire supporting body supporting an electric wire, formed by an insulating material, and attached to the insulator 1, and covers the whole of the insulator 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an insulator covering member that is detachably attached to an insulator and is used to cover the entire insulator.

  Conventionally, insulators have been used for holding electric wires such as high-voltage electric wires and attaching them to steel towers or utility poles. Also, in salt-affected areas such as coasts, conductive substances contained in seawater, here salt and salt water, adhere to the insulator, and rainwater containing the conductive substance flows through the insulator surface by rain and energizes. This causes a problem that a ground fault occurs. For this reason, salt-resistant insulators, that is, insulators having concentric folds (dents) at the lower end are generally used in such salt damage areas.

  However, for example, in the case of a large-scale typhoon or the like, even if the salt-resistant insulator described above is used, seawater (salt water) or the like is sprayed on the insulator by strong wind or wave splash, etc. As a result, a ground fault may occur.

  In order to prevent a ground fault caused by such salt damage, the distribution line composite insulator is targeted, and a part of the distribution line composite insulator, for example, the upper end portion is surrounded in a separated state. A salt-proof cover (see, for example, Patent Document 1) having a pair of semi-cylindrical covers for covering has been proposed.

  However, even if such a salt-proof cover is attached to the distribution insulator composite insulator, the surface of the distribution insulator composite insulator is partially covered by the salt-protection cover. When blown up from the lower side to the upper side of the distribution line composite insulator depending on the orientation or the like, it is not possible to prevent the conductive material contained in the seawater from adhering to the surface of the distribution line composite insulator. That is, it is not possible to reliably prevent a ground fault that occurs due to salt damage.

  In addition, since the distribution insulator composite insulator may be installed in a state of being inclined with respect to the horizontal direction, even if the above-described salt-proof cover is attached, in this case, the distribution wire composite is caused by the seawater blown up. It is more difficult to prevent the conductive material from adhering to the insulator surface.

  Therefore, in any case, the above-described saltproof cover cannot reliably prevent a ground fault caused by salt damage over a long period of time.

  In recent years, for example, when conductive materials such as bird droppings adhere to the insulator, the creeping surface of the insulator is energized through the droppings, which causes a ground fault. It became. As described above, when the distribution line composite insulator is installed at an inclination, it is also impossible to reliably prevent the attachment of bird droppings or the like to the surface of the distribution line composite insulator. Therefore, the salt-proof cover described above cannot reliably prevent both a ground fault caused by bird droppings and the like and a ground fault caused by salt damage simultaneously and over a long period of time.

Japanese Patent Laid-Open No. 10-312721 (FIG. 1)

  The present invention provides an insulator covering member capable of reliably preventing both a ground fault caused by salt damage and a ground fault caused by bird droppings simultaneously and over a long period of time. This is the issue.

  A first aspect of the present invention that solves the above problems is provided detachably with respect to an insulator that constitutes at least a part of an electric wire support that supports an electric wire, is formed of an insulating material, and is attached to the insulator. The insulator covering member is characterized by covering the entire insulator.

  In the first aspect, since it can be attached to and detached from the insulator, it can be easily replaced at a predetermined timing, and the insulator is not affected externally because it covers the entire insulator when mounted on the insulator. Accordingly, it is possible to reliably prevent both a ground fault accident caused by salt damage and a ground fault accident caused by bird droppings at the same time and over a long period of time.

  According to a second aspect of the present invention, in the first aspect, a portion covering the insulator is provided with a predetermined thickness, and the inner surface of the insulator is opposed to the insulator in a state of being attached to the insulator. The insulator covering member is characterized in that at least the gap with the outer peripheral surface is smaller than the thickness of the portion covering the insulator.

  According to the second aspect, the entire insulator can be covered compactly at the time of mounting on the insulator, and rattling of the insulator covering member with respect to the insulator can be prevented, and noise can be suppressed to a small level.

  According to a third aspect of the present invention, in the first or second aspect, the first covering member and the second covering member are divided into two as a whole, and the first covering member and the second covering member are The insulator covering member is characterized in that the insulator is sandwiched between the first covering member and the second covering member to cover the entire insulator.

  In the third aspect, since the first covering member and the second covering member are divided into two, for example, the insulator covering member can be smoothly and relatively easily attached to the insulator already installed. be able to.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, a clamp member that holds the electric wire is connected to the insulator to form the electric wire support, and the portion that covers the insulator; The insulator covering member is provided integrally and has a portion covering the entire clamp member.

  In the fourth aspect, the surface of the clamp member is covered while covering at least the entire insulator of the electric wire support that supports the electric wire via the insulator (for example, a tension-resistant insulator, a salt-resistant tension insulator, etc.) and the clamp member. As a result of the coating, both a ground fault caused by salt damage and a ground fault caused by bird droppings can be prevented more reliably at the same time and over a long period of time.

  In the present invention, by making it detachable from the insulator, it can be easily replaced at a predetermined timing, and the insulator is externally affected since it covers the entire insulator when mounted on the insulator. Therefore, it is possible to reliably prevent both a ground fault caused by salt damage and a ground fault caused by bird droppings at the same time and over a long period of time.

  The insulator covering member of the present invention can be easily exchanged at a predetermined timing by being detachably provided to the insulator constituting at least a part of the electric wire support that supports the electric wire. The entire cover is provided, and at least an effect of reliably preventing a ground fault occurring due to salt damage over a long period of time can be achieved. In addition, since the entire insulator is covered when attached to the insulator as described above, it is possible to reliably prevent a ground fault caused by bird droppings or the like over a long period of time.

  That is, since the insulator covering member of the present invention can be attached to and detached from the insulator already installed, for example, taking into account the amount of a conductive substance such as salt contained in seawater remaining on the insulator surface. It can be replaced at a predetermined timing or can be remounted after cleaning the surface of the insulator covering member removed from the insulator. On the other hand, when the insulator covering member is attached to the insulator, the entire insulator is covered, so that it is possible to reliably prevent the insulator from being affected externally.

  Further, in the present invention, in particular, by attaching to a salt-resistant insulator installed in a salt damage area as an insulator, it is possible to reliably prevent the conductive material contained in seawater or the like from adhering to the insulator surface. Moreover, since the insulator covering member can be attached to and detached from the insulator, it can be appropriately replaced at a predetermined timing according to the amount of the conductive material adhering to the surface of the insulator covering member. It is possible to reliably prevent a ground fault caused by the occurrence for a long time.

  In the present invention, the “whole insulator” that is covered by the insulator covering member is joined to the main part of the insulator, specifically, for example, a connection fitting connected to an electric wire or the like, or the upper end of the insulator. It shall mean the insulator body excluding components such as the cap member. “External influence” refers to the physical influence from the outside in the installation environment of the insulator. Specifically, the seawater or salt contained in the seawater, bird droppings, and other conductive substances are It means that it adheres to the surface.

  Here, the insulator covering member of the present invention is formed of an insulating material, and the insulating material is preferably an elastically deformable material, for example, rubber or resin exhibiting insulating properties. This is because handling of the insulator covering member is relatively easy.

  Further, in the present invention, the gap between the inner surface facing the insulator of the insulator covering member and at least the outer peripheral surface of the insulator in a state where the insulator is coated with a predetermined thickness and mounted on the insulator, It is preferable to make it smaller than the thickness of the portion coated with the insulator. Thereby, while being able to coat | cover the whole insulator compactly, the play with respect to the insulator of an insulator covering member can be prevented, and a noise can be restrained small.

  In the present invention, as an insulating material for forming the insulator covering member, a material that expands and contracts by pulling from the outside and opening the insulator is used, and the outer shape before the attachment to the insulator is made smaller than the insulator. Good. Thereby, in the mounting state to the insulator, the adhesion between the insulator covering member and the insulator is improved, and the play of the insulator covering member with respect to the insulator is more effectively prevented, and the noise is more effectively reduced. it can.

  In the present invention, the outer shape of the insulator covering member may be appropriately changed according to the type, shape, structure, etc. of the insulator to which the insulator covering member is to be attached. If it has the shape which coat | covers, it will not be limited.

  Hereinafter, the present invention will be described in more detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic view showing an insulator covering member according to Embodiment 1 of the present invention, in which (a) is a partial cross-sectional view, (b) is a side view, (c) is a bottom view, and (d) ) Is a top view. 2 is an enlarged cross-sectional view of the main part of the insulator covering member shown in FIG.

  The insulator covering member 10 of the present embodiment shown in FIG. 1 is formed entirely of an insulating material, is provided so as to be detachable from the insulator 1, and covers the entire insulator 1 when mounted on the insulator 1. Specifically, it is constituted by a first covering member 11 and a second covering member 12 having substantially the same outer shape divided into two on the left and right sides in the drawing.

  Here, the insulator 1 covered with the insulator covering member 10 of the present embodiment is a salt-resistant tension insulator, and specifically, made of an insulating material such as porcelain or plastic as shown in FIG. It has a cylindrical insulator body 2, a connection fitting 3 having one end fixed inside the insulator body 2, and a cap member 4 provided at the upper end of the insulator body 2. A concentric pleat 5 is provided at the lower end of the insulator body 2, that is, the lower end on the side from which the connection fitting 3 protrudes so as to surround the outer periphery of the connection fitting 3. Furthermore, although not shown in figure, the other end part of the connection metal fitting 3 of the insulator 1 is the attaching part 3a to which electric wires, such as a high voltage electric wire, are attached directly or indirectly. In the insulator 1 having such a structure, the upper portion 2 a of the insulator body 2 is covered with a cap member 4.

  Moreover, the whole of such an insulator 1, specifically, the insulator main body 2 which is the main part of the insulator 1, the 1st covering member 11 and the 2nd covering member 12 which comprise the insulator covering member 10 in this embodiment. It is covered by.

  Here, as shown in FIGS. 1A and 1D, the upper portion of the insulator covering member 10, that is, the portion corresponding to the cap member 4 side of the insulator 1 is engaged with the peripheral portion of the cap member 4. A first engagement hole 13 is provided. On the other hand, as shown in FIGS. 1A and 1C, the lower part of the insulator covering member 10, that is, the part corresponding to the connecting metal 3 side of the insulator 1 is engaged with the outer peripheral surface of the connecting metal 3. A second engagement hole 14 is provided.

  Further, as shown in FIG. 2, the joint surface between the first covering member 11 and the second covering member 12 of the insulator covering member 10, specifically, one end surface of the first covering member 11 and the second covering member 12. (The end surface of the first covering member 11 in FIG. 2) is provided with a protruding portion 15 whose tip portion gradually decreases toward the tip, and the other end surface (the end surface of the second covering member 12 in FIG. 2) A fitting hole 16 into which the protruding portion 15 is fitted is provided. In addition, although not shown in figure, these projection part 15 and the fitting hole 16 are provided with two or more by the predetermined location of the joining surface of the 1st coating member 11 of the insulator coating member 10 and the 2nd coating member 12. FIG.

  And in this embodiment, as shown to Fig.1 (a)-FIG.1 (d), between the 1st coating | coated member 11 and the 2nd coating | coated member 12 which comprise the insulator coating | coated member 10 mentioned above, the insulator 1 ( The insulator body 2) is sandwiched from both sides thereof, the projection 15 is fitted into the fitting hole 16, the first engagement hole 13 is brought into contact with the peripheral edge of the cap member 4, and the second engagement hole 14 is connected to the connecting metal fitting. 3, the entire insulator 1, specifically, the outer periphery of the insulator body 2 is covered.

  Thus, the insulator covering member 10 of the present embodiment is detachable from the insulator 1 by dividing the insulator covering member 10 into the first covering member 11 and the second covering member 12, and the insulator 1 is sandwiched from both sides thereof. Since it has a structure, it can be easily attached to and detached from the insulator 1. In particular, the insulator covering member 10 can be mounted relatively easily on an already installed insulator or the like, and the insulator covering member 10 can be replaced relatively easily at a predetermined timing.

  Further, when the insulator covering member 10 is mounted on the insulator 1, since the entire insulator 1 is covered with the insulator covering member 10, it is possible to reliably prevent the insulator 1 from being affected externally. That is, the insulator covering member 10 can reliably prevent, for example, salt contained in seawater or bird droppings from adhering to the surface of the insulator 1. Accordingly, it is possible to reliably prevent both a ground fault accident caused by salt damage and a ground fault accident caused by bird droppings at the same time and over a long period of time.

  Moreover, in this embodiment, the part which coat | covers the insulator 1 of the insulator covering member 10 is provided by predetermined thickness, and the inner surface and insulator which oppose the insulator 1 in the mounting state to the insulator 1 of the insulator covering member 10 are shown. The gap between at least the outer peripheral surface of 1 is made smaller than the thickness of the portion covering the insulator 1. As a result, when the insulator covering member 10 is mounted on the insulator 1, the entire insulator 1 can be covered in a compact manner, and rattling of the insulator covering member 10 with respect to the insulator 1 can be prevented to reduce noise. Can do.

  Here, for example, an electric wire such as a high-voltage electric wire may be directly attached to the attachment portion 3a of the coupling fitting 3 of the insulator 1, or, as shown in FIG. 3, a clamp member 6 that holds an electric wire (not shown). May be connected. In the former case, the electric wire support is constituted by the insulator, and in the latter case, the electric wire support is constituted by the insulator 1 and the clamp member 6. FIG. 3 is a schematic view showing an electric wire support.

  In the latter case, as shown in FIG. 3, it is preferable to cover the entire clamp member 6 from both sides with a clamp covering member 20 divided into two in the same manner as the above-described insulator covering member 10. Each end portion of the clamp covering member is provided with an insertion hole 21 through which an electric wire (not shown) gripped by the clamp member is inserted. In addition, the clamp covering member is attached to the clamp member 6 by sandwiching the clamp member 6 from both sides and then joining the members divided into two by the fixing portion 22 provided at a predetermined portion on the outer periphery. It has become so.

  In this way, the entire insulator 1 is covered with the insulator covering member 10, and the entire clamp member 6 is covered with the clamp covering member 20, thereby preventing the conductive material from adhering to the insulator 1 and the clamp member 6. It is possible to prevent a ground fault more reliably.

(Embodiment 2)
FIG. 4 is a schematic view showing a state in which the insulator covering member according to Embodiment 2 of the present invention is attached to the insulator. In Embodiment 1 described above, the entire insulator 1 is covered with the insulator covering member 10 and the clamp member 6 is covered with the clamp covering member 20, that is, the insulator 1 and the clamp member 6 are separately covered. In this embodiment, as shown in FIGS. 4A and 4B, the entire wire support 7 including the insulator 1 and the clamp member 6 is covered with the insulator covering member 10A.

  Specifically, the insulator covering member 10A of the present embodiment includes an insulator covering portion 10a that covers the insulator 1 and a clamp covering portion 10b that covers the entire clamp member 6, and the insulator covering portion 10a. The clamp covering portion 10b is integrally provided.

  Further, such an insulator covering member 10A is composed of a first covering member 11A and a second covering member 12A having the same shape divided into two as a whole. Such an insulator covering member 10A is provided with an insertion hole 21A through which an electric wire (not shown) gripped by a clamp member is inserted at each of both ends. In addition, the first covering member 11A and the second covering member 12A sandwich the electric wire support 7 from both sides thereof and are joined to each other by a fixing portion 22A provided at a predetermined portion on the outer periphery.

  By adopting such a structure, the existing electric wire support 7 installed in a state in which the insulator 1 and the clamp member 6 connected to the insulator 1 are exposed to the atmosphere, that is, in a state where it can be externally affected. On the other hand, by attaching the insulator covering member 10A of the present embodiment, the entire wire support can be completely covered. Accordingly, it is possible to more reliably prevent both a ground fault accident caused by salt damage and a ground fault accident caused by bird droppings at the same time and over a long period of time.

  An insulator equipped with the insulator covering member of the present invention can be provided as a salt-resistant insulator.

It is the schematic which shows the insulator coating | coated member which concerns on Embodiment 1 of this invention, Comprising: (a) is a partial cross section figure, (b) is a side view, (c) is a bottom view, (d) is a top view. It is. It is a principal part expanded sectional view of the insulator coating | coated member shown in FIG. It is the schematic which shows an electric wire support body. It is the schematic which shows the mounting state to the insulator of the insulator coating | coated member which concerns on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 insulator 2 insulator main body 3 connection metal fitting 4 cap member 5 pleat part 6 clamp member 10, 10A insulator covering member 10a insulator covering part 10b clamp covering part 11 first covering member 12 second covering member 13 first engagement hole 14 second Engagement hole 15 Protrusion 16 Fitting hole 20 Clamp covering member

Claims (4)

It is provided detachably with respect to an insulator that constitutes at least a part of an electric wire support that supports an electric wire, is formed of an insulating material, and is attached to the insulator to cover the entire insulator. An insulator covering member. 2. The insulator according to claim 1, wherein a portion covering the insulator is provided with a predetermined thickness, and a gap between the inner surface facing the insulator and at least the outer peripheral surface of the insulator is in the state of being attached to the insulator. An insulator covering member characterized by being smaller than the thickness of the portion covering the cover. 3. The structure according to claim 1, wherein the first covering member and the second covering member are divided into two as a whole, and the insulator is sandwiched between the first covering member and the second covering member. An insulator covering member characterized by covering the entire insulator with one covering member and the second covering member. 4. The clamp member according to claim 1, wherein a clamp member that holds the electric wire is connected to the insulator to form the electric wire support, and the clamp member is provided integrally with a portion that covers the insulator. An insulator covering member characterized by having a portion covering the whole.

Images