Distribution network line lightning arrester insulating cover

Abstract

The utility model discloses an insulating cover of a distribution network line lightning arrester. The insulating cover comprises a left half cover body and a right half cover body, one side of the left half cover body and one side of the right half cover body are connected with each other through a hinge structure, and the left half cover body and the right half cover body can rotate based on the hinge structure so that the left half cover body and the right half cover body can deviate from each other to be separated or can be folded and closed with each other; when the left half cover body and the right half cover body are mutually folded and closed, a first open hole is formed in the bottom, and the first open hole can fix the insulating cover between the umbrella skirts of the lightning arrester. Meanwhile, the left half cover body and the right half cover body can be mutually connected and locked through the lock catch structures arranged on the left half cover body and the right half cover body. According to the utility model, the left half cover body and the right half cover body can adopt an integrated modular design, the structure is simple, the left half cover body and the right half cover body can be connected and locked with each other through the lock catch structure during installation, and auxiliary fasteners such as pins are not needed, so that the installation is relatively convenient and rapid, and the live installation can be directly carried out when necessary.

Description

TECHNICAL FIELD

[0001] The utility model relates to distribution network power equipment technical field especially relates to a distribution network line lightning arrester insulating cover. BACKGROUND

[0002] Porcelain or composite material post lightning arrester (and post insulator) because of its reliable performance and good economy is widely used in various 10-35kV distribution network line, but in practical application, because lightning arrester connecting part is usually due to foreign object lap joint or the activity of birds and other animals and frequently appears relative ground or phase-to-phase short circuit accident.Lightning arrester insulating cover can be installed in sensitive line connecting point, provides insulation protection.

[0003] At present, the insulating cover in the market is used in this kind of scene to improve the insulation condition, but the current insulating cover needs to be fixed one by one around the insulating cover when installing by using a pin, the process is relatively complex, and the installation efficiency is low in overhead line, especially in the direct method distribution network live working scene, it is almost impossible to realize installation. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that a distribution network line lightning arrester insulating cover is provided, which is convenient and fast to install and does not require auxiliary fasteners such as pins.

[0005] To solve the above technical problems, the utility model provides a distribution network line lightning arrester insulating cover, which comprises a left half cover body and a right half cover body.

[0006] One side of the left half cover body and the right half cover body is connected to each other through a hinge structure, and the left half cover body and the right half cover body can rotate based on the hinge structure to make the left half cover body and the right half cover body diverge or close to each other.

[0007] When the left half cover body and the right half cover body close to each other, a first opening is formed at the bottom, and at the same time, the lock catch structure arranged on the left half cover body and the right half cover body connects and locks the left half cover body and the right half cover body.

[0008] Further, when the left half cover body and the right half cover body close to each other, a tapered structure is formed on both sides, and the end face of the tapered structure is provided with a second opening for the wire to pass through.

[0009] Further, the aperture of the second opening is between 15mm and 30mm.

[0010] Further, the lock catch structure is arranged on the side opposite to the hinge structure.

[0011] Further, the lock catch structure comprises a plug-in body arranged on the left half cover body and a limiting body arranged on the right half cover body.

[0012] When the left half cover body and the right half cover body are closed to each other, the plug-in body is inserted into the limiting body and is limited by the limiting body and cannot be separated; when the plug-in body is clamped in the limiting body, if the plug-in body is subjected to a force in a predetermined direction, the plug-in body can be separated from the limiting body.

[0013] Further, the plug-in body is integrally formed with the left half cover body, and the limiting body is integrally formed with the right half cover body.

[0014] Further, the hinge structure comprises a left hinge leaf and a right hinge leaf; wherein the left hinge leaf and the right hinge leaf are integrally formed and the top portions of the two are connected to each other, and the bottom portion of the left hinge leaf is integrally formed with the left half cover body, and the bottom portion of the right hinge leaf is integrally formed with the right half cover body.

[0015] Further, when the left half cover body and the right half cover body are closed to each other, a narrow gap is formed at the joint of the top portion and the bottom portion.

[0016] Further, the left half cover body, the right half cover body, the hinge structure and the lock structure are integrally formed by injection molding of high-performance polyolefin material.

[0017] The beneficial effects of the lightning arrester insulating cover are as follows:

[0018] (1) The left half cover body and the right half cover body adopt an integrated modular design, the structure is simple, when installing, the left half cover body and the right half cover body can be connected and locked to each other through the lock structure, without the need for auxiliary fasteners such as pins, so that the installation is more convenient and fast, and when necessary, the lock structure at the bottom of the insulating cover can be opened, so that the insulating cover is removed to maintain and repair the lightning arrester, and after maintenance and repair, the insulating cover is installed again and the lock structure is locked, the insulating cover can be repeatedly used, and the cost is reduced;

[0019] (2) Since the left half cover body and the right half cover body are closed to each other after being closed to each other, the two sides are conical structures, so if the diameter of the conductor is relatively large or there is a special-shaped structure conductor (such as the diameter increases after the original conductor is added with an insulating sleeve), a part of the end of the conical structure can be manually cut, the hole diameter of the second opening is increased, so that it is suitable for installation of larger specification conductors, even the incoming and outgoing lines connected with copper bars, and the adaptability of on-site use is greatly improved;

[0020] (3) Since the left half cover body and the right half cover body form narrow gaps at the top and bottom abutments when they are closed to each other, rainwater can enter the inside of the insulating cover from the narrow gap at the top abutment on a rainy day, clean the inner surface of the insulating cover and the contaminants and foreign matters accumulated inside, and then flow out from the narrow gap at the bottom abutment and the first opening, so that the connecting point of the lightning arrester can be kept in a good electrical connection state through cleaning;

[0021] (4) Since the left half cover body and the right half cover body form narrow gaps at the top and bottom abutments when they are closed to each other, such a non-fully closed structure also helps air convection from top to bottom, dissipates heat inside the insulating cover, improves the temperature rise of the line connecting point, improves the reliability of the lightning arrester, and is also beneficial to the timely dissipation of water vapor inside the insulating cover to reduce the situation of metal line electrochemical corrosion caused by condensation;

[0022] (5) The electrical insulation performance of the high-performance polyolefin material can provide good insulation protection for the lightning arrester, and also has the characteristics of high mechanical strength, resistance to electrical corrosion, resistance to ultraviolet rays, resistance to temperature aging, etc., and can be used on outdoor distribution network lines for a long time. The expected service life can exceed 15 years;

[0023] (6) The insulating cover of the utility model can also prevent short circuit phenomena (single-phase grounding or phase-to-phase short circuit) caused by birds; for example, when a large bird moves on the metal cross arm, it contacts the live equipment on the top of the insulator and stands on the top of the insulator, and the wings are opened to contact the conductor, and a phase-to-phase short circuit occurs. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the appearance structure diagram of the distribution network line lightning arrester insulating cover provided by the preferred embodiment of the utility model

[0025] Figure 2 is Figure 1 the view from the top view angle;

[0026] Figure 3 is Figure 1 the state diagram when the left half cover body and the right half cover body in the utility model are mutually separated away from each other;

[0027] Figure 4 embodies Figure 1 the state when the plug-in body in the utility model is clamped in the limiting body;

[0028] Figure 5 embodies Figure 4 the state when the left half cover body and the right half cover body in the utility model are mutually separated away from each other, and the plug-in body is away from the limiting body. DETAILED DESCRIPTION

[0029] The utility model is further described in detail below with specific embodiments, but the embodiments of the utility model are not limited to this.

[0030] Referring to Figures 1 to 3 The embodiment of the utility model provides a kind of distribution network line lightning arrester insulating cover, it includes left half cover body 110 and right half cover body 120, which are substantially identical in structure and mutually symmetrical.

[0031] One side of the left half cover body 110 and the right half cover body 120 is connected to each other by hinge structure 130, and the left half cover body 110 and the right half cover body 120 can rotate based on the hinge structure 130 to make the left half cover body 110 and the right half cover body 120 diverge apart or converge and close to each other.

[0032] Wherein, when the left half cover body 110 and the right half cover body 120 converge and close to each other, a first opening 1a will be formed at the bottom, which is used to fix the insulating cover of the utility model between the lightning arrester umbrella skirt, and at the same time, the lock catch structure 140 arranged on the left half cover body 110 and the right half cover body 120 will make the left half cover body 110 and the right half cover body 120 connected and locked.

[0033] More specifically, referring to Figure 1 And Figure 2 When the left half cover body 110 and the right half cover body 120 converge and close to each other, a horizontal columnar structure 1d will be formed in the middle of the insulating cover, both sides of the horizontal columnar structure 1d will form a conical structure 1b, and the end face of the conical structure 1b will form a second opening 1c for the wire to pass through; at the same time, the lower side of the middle of the horizontal columnar structure 1d will also be connected to a vertical columnar structure 1e, and a hemispherical structure 1f will also be formed at the top of the vertical columnar structure 1e and the position where the vertical columnar structure 1e intersects with the horizontal columnar structure 1d. Wherein, the first opening 1a is located at the bottom of the vertical columnar structure 1e.

[0034] When installing, first separate the left half cover body 110 and the right half cover body 120 of the insulating cover, then place the insulating cover beside the lightning arrester, and then converge and close the left and right two half cover bodies, so that the vertical columnar structure 1e wraps the outside of the lightning arrester, the insulating cover is fixed between the lightning arrester umbrella skirt, and the horizontal columnar structure 1d and the conical structure 1b wrap the wire in them, and the two second openings 1c are used for the wire to pass through. After installation is completed, the insulating cover can provide insulation protection for the connection part of the lightning arrester.

[0035] Preferably, the aperture of the second opening 1c is between 15mm and 30mm, which can be suitable for most wires.

[0036] Since the left half cover 110 and the right half cover 120 are tapered on both sides after being closed, if the diameter of the wire is relatively large or the conductor has a special structure (such as the diameter of the original conductor increases after being wrapped with an insulating sleeve), the end of the tapered structure 1b can be manually cut to increase the aperture of the second opening 1c, so that it is suitable for the installation of larger diameter wires, or even the connection of copper bar input and output lines, greatly improving the adaptability of on-site use.

[0037] In a preferred embodiment, referring to Figures 1 to 3 , the lock structure 140 is arranged on the side opposite to the hinge structure 130.

[0038] The lock structure 140 includes a plug body 141 arranged on the left half cover 110 and a limiting body 142 arranged on the right half cover 120. Preferably, the plug body 141 is integrally formed with the left half cover 110, and the limiting body 142 is integrally formed with the right half cover 120.

[0039] When the left half cover 110 and the right half cover 120 are closed, the plug body 141 is inserted into the limiting body 142 and cannot be separated from the limiting body 142. When the plug body 141 is clamped in the limiting body 142, if a predetermined direction force is applied to the plug body 141, the plug body 141 can be separated from the limiting body 142, so that the left and right half covers can be separated.

[0040] More specifically, referring to Figure 4 and Figure 5The middle part of the limiting body 142 is formed with a limiting groove 1421. The side of the insertion body 141 pointing to the limiting body 142 is formed with a triangular head 1411 with a triangular cross section, the end of the triangular head 1411 is a pointed body 1411a, the side away from the pointed body 1411a is formed with a vertical vertical surface 1411b, and the bottom surface between the pointed body 1411a and the vertical vertical surface 1411b is an inclined surface 1411c. When the insertion body 141 is clamped with the limiting body 142, the pointed body 1411a will be inserted into the limiting groove 1421, and during the insertion process, the inclined surface 1411c will be limited by the bottom surface of the limiting groove 1421 to gradually slightly raise the triangular head 1411, until the triangular head 1411 completely passes the limiting groove 1421, the triangular head 1411 will restore deformation and move downward, and then the vertical vertical surface 1411b will be blocked on the side surface of the limiting groove 1421, so that the triangular head 1411 is limited and cannot pass the limiting groove 1421 in reverse, thereby achieving the purpose of connecting and locking the left half cover body 110 and the right half cover body 120. When it is necessary to unlock, the triangular head 1411 is only lifted upward by hand, and then pushed outward with force, so that the triangular head 1411 is separated from the limiting groove 1421.

[0041] In a preferred embodiment, the hinge structure 130 adopts a common and relatively simple connection form, so as to facilitate the integral injection molding of the overall structure of the insulating cover.

[0042] Specifically, referring to Figure 3 and Figure 5 , the hinge structure 130 includes a left hinge leaf 131 and a right hinge leaf 132. Wherein, the left hinge leaf 131 and the right hinge leaf 132 are integrally formed and only the top parts of the two are connected with each other, and the bottom part of the left hinge leaf 131 is integrally formed with the left half cover body 110, and the bottom part of the right hinge leaf 132 is integrally formed with the right half cover body 120.

[0043] Therefore, when the lock catch structure 140 is not locked, the left and right two half cover bodies can be rotated based on the connection of the top parts of the two hinge leaves to realize the mutual divergence and separation of the left half cover body 110 and the right half cover body 120.

[0044] In a preferred embodiment, when the left half cover body 110 and the right half cover body 120 are closed to each other, a narrow gap (not shown in the figure) will be formed at the top and bottom abutting parts.

[0045] The narrow slits are beneficial for rainwater to enter the inside of the insulating cover from the top, to clean the inner surface of the insulating cover and the accumulated contaminants and foreign matters inside, and to flow out from the narrow slits at the bottom abutment and the first opening 1a after cleaning, so that the connection point of the lightning arrester can be kept in a good electrical connection state by cleaning. Meanwhile, the narrow slits on the upper and lower sides form a non-fully closed structure, which is also helpful for air convection from top to bottom, dissipates the heat inside the insulating cover, improves the temperature rise of the line connection point, improves the reliability of the lightning arrester, and is also beneficial for timely dissipation of water vapor inside the insulating cover to reduce the situation of electrochemical corrosion of the metal line caused by condensation.

[0046] In a preferred embodiment, the left half cover body 110, the right half cover body 120, the hinge structure 130 and the lock structure 140 are integrally formed by injection molding of high-performance polyolefin material. That is, the entire insulating cover is integrally formed by injection molding of high-performance polyolefin material. The high-performance polyolefin material has good electrical insulation performance to provide good insulation protection for the lightning arrester.

[0047] The above-mentioned integrally injection-molded symmetrical structure has the characteristics of convenient preparation during production, simple structure of finished product, no need for auxiliary accessories such as screws during installation, and convenient and fast installation. Moreover, the high-performance polyolefin material has the characteristics of high mechanical strength, resistance to electrical corrosion, resistance to ultraviolet rays, resistance to temperature aging, etc., and can be used reliably for a long time on outdoor distribution line, and the expected service life can be more than 15 years.

[0048] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A distribution line arrester insulator shield, characterized by, The left half cover body (110) and the right half cover body (120) are connected to each other by a hinge structure (130), and the left half cover body (110) and the right half cover body (120) can rotate based on the hinge structure (130) to separate from each other or close to each other. When the left half cover body (110) and the right half cover body (120) are closed to each other, a first opening (1a) is formed at the bottom, and at the same time, a locking structure (140) arranged on the left half cover body (110) and the right half cover body (120) can connect and lock the left half cover body (110) and the right half cover body (120) to each other. When the left half cover body (110) and the right half cover body (120) are closed to each other, a tapered structure (1b) is formed at both sides, and the end face of the tapered structure (1b) is provided with a second opening (1c) for passing a wire.

2. The insulator cover for a distribution line surge arrester of claim 1, wherein, The diameter of the second opening (1c) is between 15mm and 30mm.

3. The insulator cover for a distribution line surge arrester of claim 2, wherein, The locking structure (140) is arranged on the side opposite to the hinge structure (130).

4. The insulator housing for distribution line surge arresters according to claim 1, characterized in that The locking structure (140) includes a plug-in body (141) arranged on the left half cover body (110) and a limiting body (142) arranged on the right half cover body (120).

5. The insulator housing for a distribution line surge arrester according to claim 4, characterized in that When the left half cover body (110) and the right half cover body (120) are closed to each other, the plug-in body (141) is inserted into the limiting body (142) and cannot be separated from the limiting body (142); when the plug-in body (141) is clamped in the limiting body (142), if the plug-in body (141) is subjected to a predetermined direction force, the plug-in body (141) can be separated from the limiting body (142). The plug-in body (141) is integrally formed with the left half cover body (110), and the limiting body (142) is integrally formed with the right half cover body (120).

6. The insulator housing for a distribution line surge arrester according to claim 5, characterized in that The hinge structure (130) includes a left hinge leaf (131) and a right hinge leaf (132); wherein the left hinge leaf (131) and the right hinge leaf (132) are integrally formed and the top portions of the two are connected to each other, and the bottom portion of the left hinge leaf (131) is integrally formed with the left half cover body (110), and the bottom portion of the right hinge leaf (132) is integrally formed with the right half cover body (120).

7. The insulator housing for distribution line surge arrestor according to claim 1, wherein When the left half cover body (110) and the right half cover body (120) are closed to each other, a narrow gap is formed at the joint of the top and the bottom.

8. The insulator housing for distribution line surge arrestor according to claim 1, wherein The left half cover body (110), the right half cover body (120), the hinge structure (130), and the locking structure (140) are integrally formed by injection molding of high-performance polyolefin material.

9. The distribution line arrester insulator housing of claim 1, wherein, ​

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