CN215770718U - Epoxy sleeve insulating cap used for 24kV and below - Google Patents

Abstract

The utility model discloses an epoxy sleeve insulating cap used for 24kV and below, which comprises an outer cap body and an inner cap body, wherein the inner cap body is arranged in an inner cavity of the outer cap body, an installation cavity is arranged at the bottom of the inner cavity of the inner cap body, a connecting assembly is embedded in the installation cavity without a gap and comprises an inner semi-conductive body and a conductive insert, a casting cavity is arranged at one side of the inner semi-conductive body, the conductive insert comprises a casting part and a threaded connecting column which are integrally formed, the casting part is cast into the casting cavity, a grounding insert is arranged at the end part of the outer cap body, a threaded hole is formed in the grounding insert, and the grounding insert is fixedly connected with a grounding wire through a matched threaded hole and a nut. The electric conductivity of the grounding wire is improved, even if an operator contacts the outer layer of a product under the conditions of normal work and good grounding, the operator cannot hurt personnel and equipment, and the use safety and the power supply reliability are greatly improved.

Description

Epoxy sleeve insulating cap used for 24kV and below

Technical Field

The utility model relates to the technical field of electrical parts, in particular to an epoxy sleeve insulating cap used for 24kV or below.

Background

In the box-type transformer equipment, a live bushing with a lead-out wire is reserved and is often exposed outside, if effective insulation sealing is not carried out, potential safety hazards exist, and in order to avoid the potential safety hazards, the live bushing is protected in a sealing mode through an insulating cap. The existing outer cone insulating cap is generally directly sleeved on an outer cone sleeve, and due to the fact that the surface finish of the outer cone sleeve is high and certain taper exists, after the outer cone sleeve is installed in place and external force is removed, the outer cone insulating cap can slide outwards from the outer cone sleeve, so that the outer cone insulating cap is not tightly contacted with the outer cone sleeve, a gap is formed, and the insulating fit between the outer cone sleeve and the outer cone sleeve is influenced. In addition, the similar products are grounded through the outer semi-conducting layer in the prior art, and the grounding resistance is large, so that the conductivity is influenced.

SUMMERY OF THE UTILITY MODEL

According to the defects of the prior art, the utility model provides the epoxy sleeve insulating cap used for 24kV or below, the use is convenient, the installation tightness of the epoxy sleeve can be ensured, the electric conduction performance of a grounding wire is improved, and the safety performance is higher.

In order to solve the technical problems, the technical scheme of the utility model is as follows:

the utility model provides an epoxy sleeve pipe insulated cap for 24kV and below, includes the outer cap body and the interior cap body, the interior cap body is installed in the inner chamber of the outer cap body, the inner chamber bottom of the inner cap body is provided with the installation cavity, zero clearance gomphosis has coupling assembling in the installation cavity, coupling assembling includes interior semi-conductive body and electrically conductive inserts, interior semi-conductive body one side is equipped with the casting chamber, electrically conductive inserts includes integrated into one piece's casting portion and threaded connection post, casting portion casting to the casting intracavity, the ground connection inserts is installed to the tip of the outer cap body, be provided with the screw hole on the ground connection inserts, the ground connection inserts is through matched with screw hole and nut fixedly connected with earth connection.

Preferably, a clamping convex ring extends outwards from one side edge of the inner semi-conductor, and an annular clamping groove is formed in the inner cavity wall of the inner cap body corresponding to the clamping convex ring.

Preferably, the diameter of the middle position of the inner cavity wall of the outer cap body is contracted inwards, the diameter of the middle position of the outer wall of the inner cap body is contracted inwards, and the inner cavity wall of the outer cap body is embedded with the outer wall of the inner cap body.

Preferably, the limiting column extends outwards from the center of the end part of the inner cap body, and the limiting hole is formed in the center of the bottom of the inner cavity of the outer cap body and corresponds to the guiding column.

Preferably, the outer wall of the outer cap body is provided with convex teeth in a ring-shaped arrangement at positions close to the end parts.

Preferably, the conductive insert and the grounding insert are made of any one of aluminum and copper.

Preferably, the inner semi-conductive body and the outer cap body are both made of conductive silicone rubber.

Preferably, the inner cap body is made of insulating silicon rubber.

The utility model has the following characteristics and beneficial effects:

by adopting the technical scheme, the structure is simple, the production difficulty is low, the cost is low, the use is convenient, the tightness of the installation of the epoxy sleeve can be guaranteed, the electric conduction of the grounding wire is improved, the personnel injury and the equipment damage can not be caused even if an operator contacts the outer layer of a product under the conditions of normal work and good grounding, and the use safety and the power supply reliability are greatly improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an exploded view of an embodiment of the present invention.

Fig. 2 is a schematic view of the usage state of fig. 1.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The utility model provides an epoxy bushing insulating cap for 24kV or below, which comprises an outer cap body 210 and an inner cap body 206, wherein the inner cap body 206 is installed in an inner cavity of the outer cap body 210, an installation cavity 207 is arranged at the bottom of the inner cavity of the inner cap body 206, a connecting assembly is embedded in the installation cavity 207 in a gapless mode, the connecting assembly comprises an inner semi-conducting body 204 and a conducting insert, a casting cavity 202 is arranged on one side of the inner semi-conducting body 204, the conducting insert comprises an integrally formed casting portion 203 and a threaded connecting column 201, the casting portion 203 is cast into the casting cavity 202, a grounding insert 213 is installed at the end portion of the outer cap body 210, a threaded hole 214 is formed in the grounding insert 213, and a grounding wire 215 is fixedly connected to the grounding insert 213 through the threaded hole 214 and a nut 216 which are matched with each other, as shown in fig. 1 and fig. 2. Wherein, the conductive insert and the grounding insert are both made of any one of aluminum and copper. The inner semi-conductor and the outer cap body are both made of conductive silicon rubber. The inner cap body is made of insulating silicon rubber.

Specifically, the conductive insert is placed in a mold, conductive silicon rubber is injected into the mold through a rubber injection machine to form an inner semi-conductive body, and the inner semi-conductive body is vulcanized and molded in the mold to form a connecting assembly; placing the grounding insert into a mold, injecting conductive silicon rubber through a rubber injection machine, and vulcanizing and molding in the mold to form an outer cap body; putting the connecting assembly and the outer cap body into a die at the same time, injecting insulating silicon rubber into the die through a threaded hole by a rubber injection machine to prepare an inner cap body, and vulcanizing and molding the inner cap body in the die to form an insulating cap; and configuring the insulating cap into a final product.

In the technical scheme, the insulating cap is formed by adopting an advanced post-injection insulating layer technology (firstly, the inner semi-conductor of the inner layer and the outer cap of the outer layer are arranged, and then the inner cap of the middle layer is arranged), so that the finally extruded insulating inner cap is clean, the electrical performance of the product is higher, and the use is safer and more reliable.

Traditionally, the similar products are grounded through the outer semi-conducting layer, and the grounding resistance of the mode is large. According to the technical scheme, the resistance is extremely low in a grounding mode of the grounding insert, and the conducting capacity is higher. Under the condition of normal work and good grounding, even if an operator contacts the outer layer of a product, the operator cannot hurt personnel and equipment, and the use safety and the power supply reliability are greatly improved.

Further, a clamping convex ring 205 extends outwards from one side edge of the inner semi-conductor 204, and an annular clamping groove 209 is formed in the inner cavity wall of the inner cap body 206 corresponding to the clamping convex ring 205.

Among the above-mentioned technical scheme, through matched with bulge loop 205 and joint groove 209 behind the injection moulding to make being connected of coupling assembling and the interior cap body more stable, more firm.

Furthermore, the diameter of the middle position of the inner cavity wall of the outer cap body is inwards contracted, the diameter of the middle position of the outer wall of the inner cap body is inwards contracted, and the inner cavity wall of the outer cap body is embedded with the outer wall of the inner cap body.

Among the above-mentioned technical scheme, make the gomphosis that outer cap body and interior cap body can be fine enough to the shrink of diameter makes and exists the hindrance each other between the interior cap body and the outer cap body, consequently, the outer cap body is difficult for droing from the interior cap body, can carry out effectual fastening after the installation, plays effective insulating purpose, and overall structure has simple structure, safe practical's characteristic.

Furthermore, a limiting column 208 extends outwards from the center of the end part of the inner cap body, and a limiting hole 207 is formed in the center of the bottom of the inner cavity of the outer cap body and corresponds to the guiding column.

In the technical scheme, the limiting column 208 is formed after injection molding through the limiting hole 207 and the limiting column and the limiting hole are matched. From further making outer cap body be difficult for coming off from the interior cap body, can carry out effectual fastening after the installation, play effective insulating purpose, whole structure has simple structure, safe practical's characteristic.

Further, the outer wall of the outer cap body 210 is provided with a plurality of teeth 212 arranged in a ring shape near the end portion.

Through the setting of dogtooth, as shown in fig. 2, when installing insulator cap 2 on epoxy sleeve pipe 1, through the dogtooth between staff's hand and the outer cap body, greatly increased frictional force, the antiskid problem of solution that can be fine.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments, including the components, without departing from the principles and spirit of the utility model, and still fall within the scope of the utility model.

Claims (8)

1. The utility model provides an epoxy sleeve pipe insulated cap for 24kV and below, a serial communication port, including the outer cap body and the interior cap body, the interior cap body is installed in the inner chamber of the outer cap body, the inner chamber bottom of the inner cap body is provided with the installation cavity, zero clearance gomphosis has coupling assembling in the installation cavity, coupling assembling includes interior semi-conductive body and conductive insert, interior semi-conductive body one side is equipped with the casting chamber, conductive insert includes integrated into one piece's casting portion and threaded connection post, casting portion casting to the casting intracavity, the ground connection inserts is installed to the tip of the outer cap body, be provided with the screw hole on the ground connection inserts, the ground connection inserts is through matched with screw hole and nut fixedly connected with earth connection.

2. The epoxy bushing insulating cap used for 24kV and below as claimed in claim 1, wherein a clamping convex ring extends outwards from one side edge of the inner semi-conductor body, and an annular clamping groove is formed in the inner cavity wall of the inner cap body corresponding to the clamping convex ring.

3. The epoxy bushing insulating cap of claim 2, wherein a diameter of the outer cap body at a middle position of the inner cavity wall is inwardly contracted, a diameter of the inner cap body at a middle position of the outer wall is inwardly contracted, and the inner cavity wall of the outer cap body is engaged with the outer wall of the inner cap body.

4. The epoxy bushing insulating cap for 24kV and below as claimed in claim 1, wherein a limiting post is extended outwards from the center of the end of the inner cap body, and a limiting hole is formed at the center of the bottom of the inner cavity of the outer cap body corresponding to the guiding post.

5. The epoxy bushing insulator cap of claim 1, wherein the outer cap body has a ring-shaped array of teeth near the ends of the outer cap body.

6. The epoxy bushing insulator cap of claim 1, wherein said conductive insert and said ground insert are made of any one of aluminum and copper.

7. The epoxy bushing insulating cap for 24kV and below of claim 1, wherein the inner semi-conductive body and the outer cap body are each made of conductive silicone rubber.

8. The epoxy bushing insulator cap of claim 1, wherein the inner cap body is made of insulating silicone rubber.

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