CN219738722U - Preinstalled transformer wire clamp insulating cover - Google Patents

Abstract

The utility model provides a pre-installed transformer wire clamp insulating cover which comprises a cover body, wherein the cover body is provided with a wire end hole for a wire to extend in and a pile head end hole for a transformer pile head to extend in, the cover body is provided with an inner cavity for accommodating a transformer wire clamp, and the inner cavity is communicated with the wire end hole and the pile head end hole; the cover body comprises a cover body with an opening at the bottom and a bottom cover for sealing the opening, the bottom cover is detachably connected with the cover body, a plurality of working holes which are communicated with the inner cavity and the outside of the cover body are formed in the cover body, and each working hole is sealed through a corresponding sealing cover. This pre-installation formula transformer fastener insulating boot, through structural optimization design, the whole seamless of cover body, the cover body can not exist the gap after the installation is accomplished to realized the reliable seal to fastener and wire connector, improved electric wire netting operational stability then.

Description

Preinstalled transformer wire clamp insulating cover

Technical Field

The utility model relates to the technical field of power equipment, in particular to a pre-installed transformer wire clamp insulating cover.

Background

The transformer clamp is used for connecting the transformer terminal and the lead.

The transformer wire clamp is required to be arranged in an insulating way, the transformer wire clamp is generally sealed by an insulating cover, most of the insulating cover is of a cover body structure made of silica gel insulating materials, and the insulating cover is sleeved on the transformer wire clamp, so that interphase or ground short circuit caused by small animal climbing or personnel misoperation is prevented, and the transformer wire clamp is an important means for reducing the power grid fault rate.

Fig. 1 shows the structure of a transformer clip insulating cover in the prior art. The insulating cover comprises a cover body 1, wherein the cover body 1 is provided with a wire end hole 2 for a wire to extend in and a pile head end hole 3 for a transformer pile head to extend in, and a joint 11 is arranged along the length direction of the cover body 1. The cover 1 is nested on the transformer clamp from the joint 11 of the cover by the soft elastic property of the silica gel material during installation. However, due to different specifications of the transformer pile heads and different angles of the wires after installation, the insulating cover is difficult to attach in place, a larger or smaller gap exists at the joint 11, and then the transformer wire clamp or the wire connector is directly exposed in the outside air, rainwater easily flows into the wire clamp through the wire connector in rainy days, and effective isolation between the wire clamp and the external environment is not really achieved, so that the running stability of a power grid is affected.

Therefore, how to solve the problem of poor sealing caused by gaps existing after the installation of the transformer wire clamp insulating cover is a technical problem to be solved by the technicians in the field.

Disclosure of Invention

In view of the above, the present utility model is to provide a pre-installed transformer clip insulation cover, so as to solve the problem that the transformer clip insulation cover is not tightly sealed due to the existence of a gap after installation.

In order to achieve the above object, the utility model provides a pre-installed transformer wire clamp insulating cover, which comprises a cover body, wherein the cover body is provided with a wire end hole for a wire to extend in and a pile head end hole for a transformer pile head to extend in, an inner cavity for accommodating a transformer wire clamp is formed in the cover body, and the inner cavity is communicated with the wire end hole and the pile head end hole; it is characterized in that the method comprises the steps of,

the wire end hole is internally fixedly provided with a wire sealing sleeve, the wire sealing sleeve is in airtight connection with the inner hole wall of the wire end hole, the wire sealing sleeve is provided with a wire passing hole for a wire to pass through, and the inner hole wall of the wire passing hole is provided with an annular sealing bulge.

Preferably, the number of the annular sealing bulges is at least one, and at least one annular sealing bulge is sequentially arranged at intervals along the length direction of the wire through hole.

Preferably, the wire sealing sleeve and the inner hole wall of the wire end hole are fixed by glue.

Preferably, the pile head end hole is arranged at the bottom of the cover body.

Preferably, the cover body comprises a cover body with an opening at the bottom and a bottom cover for sealing the opening, and the bottom cover is detachably connected with the cover body;

the pile head end hole is arranged on the bottom cover.

Preferably, the cover body is provided with a plurality of working holes communicated with the inner cavity and the outside of the cover body, and each working hole is sealed by a corresponding sealing cover.

Preferably, each of the working holes has a hole flange protruding from an outer surface of the cover body;

the sealing cover comprises a cover body and a sealing body arranged on the end face of the cover body, which faces the cover body, wherein the cover body is used for covering the corresponding working hole, and the sealing body is attached to the inner hole wall of the hole flange of the working hole;

the working surface of the sealing body, which is used for being matched with the inner hole wall of the hole flange, is provided with a sealing convex ring which surrounds the circle.

Preferably, the working surface of the sealing body for cooperation with the hole flange is a tapered conical surface tapering to a side close to the cover body towards a side away from the cover body.

Preferably, the pre-installed transformer wire clamp insulating cover further comprises a protecting group, and the protecting group is arranged at the pile head end hole of the bottom cover;

the protecting group is detachably connected with the bottom cover.

The utility model has the following beneficial effects:

when leaving the factory, the transformer wire clamp is put into the cover body, the bottom cover is closed, and each sealing cover is closed at the same time. When in field installation, each sealing cover is firstly opened, the whole insulating cover is installed on the conducting rod along with the transformer wire clamp, the conducting wire stretches into the cover body through the conducting wire end hole to be connected with the transformer wire clamp, and the transformer pile head stretches into the cover body from the pile head end hole to be connected with the transformer wire clamp; then tightening bolts at all parts through the working holes; finally, each sealing cover is combined to finish the installation.

It can be appreciated that the pre-installed transformer wire clamp insulating cover is formed by the cover body and the bottom cover in a detachable manner, so that the transformer wire clamp can be pre-installed in the cover body and then the bottom cover is closed when leaving the factory. And as the working holes are formed in the cover body and each working hole is sealed by the sealing cover, when in field installation, bolts at all parts can be screwed through the working holes and then all the sealing covers are combined, so that the installation is completed. Compared with the introduction of the background technology, the pre-installation type transformer wire clamp insulating cover is integrally seamless through the structural optimization design, and a gap cannot exist in the cover body after installation is completed, so that reliable sealing of a wire clamp and a wire connector is realized, and the running stability of a power grid is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic perspective view of a prior art transformer clip insulating cover;

FIG. 2 is a schematic perspective view of a pre-installed transformer clip insulating cover according to the present utility model;

FIG. 3 is an exploded view of the cover of the present utility model;

FIG. 4 is a front view of a pre-installed transformer clip insulating cover according to the present utility model;

FIG. 5 is a cross-sectional view of a pre-installed transformer clip insulating cover according to the present utility model;

FIG. 6 is a schematic view of the structure of the seal cap according to the present utility model;

figure 7 is a schematic perspective view of a wire gland according to the present utility model;

figure 8 is a schematic cross-sectional view of a wire gland according to the present utility model;

FIG. 9 is a schematic diagram of a group protection structure according to the present utility model;

reference numerals and signs

1-a cover body; 1 a-a cover body; a bottom cover-1 b;

2-wire end holes;

3-pile head end holes;

4-wire sealing sleeve;

5-wire passing holes;

6-annular sealing projections;

7-working holes;

8-sealing cover; 8 a-a cover; 8 b-a seal; 8 c-sealing a convex ring;

9-hole flange;

10-protecting groups;

11-slit.

Detailed Description

The utility model aims at providing a pre-installed transformer wire clamp insulating cover so as to solve the problem that the transformer wire clamp insulating cover is not tightly sealed due to gaps after installation.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 2-5, the embodiment of the utility model discloses a pre-installed transformer wire clamp insulating cover, which comprises a cover body 1, wherein the cover body 1 is provided with a wire end hole 2 for a wire to extend into and a pile head end hole 3 for a transformer pile head to extend into, the cover body 1 is provided with an inner cavity for accommodating a transformer wire clamp, and the inner cavity is communicated with the wire end hole 2 and the pile head end hole 3. When the transformer pile head is applied, a wire extends into the cover body 1 through the wire end hole 2 and is connected with a transformer wire clamp in the cover body 1, and a transformer pile head extends into the cover body 1 from the pile head end hole 3 and is connected with the transformer wire clamp.

As shown in fig. 3, the cover 1 includes a cover body 1a with an opening at the bottom and a bottom cover 1b for covering the opening, the bottom cover 1b is detachably connected with the cover body 1a, and the bottom cover 1b and the cover body 1a may be detachably connected by, but not limited to, screwing, clamping, and the like, and since such detachable connection is common in the prior art, the details are not repeated herein. And a plurality of working holes 7 which are communicated with the inner cavity and the outside of the cover body are formed in the cover body 1a, and each working hole 7 is sealed through a corresponding sealing cover 8.

When leaving the factory, the transformer wire clamp is put into the cover body 1a, the bottom cover 1b is closed, and each sealing cover 8 is closed at the same time. When in field installation, each sealing cover 8 is firstly opened, the whole insulating cover is installed on a conducting rod along with a transformer wire clamp, a conducting wire extends into the cover body 1 through the wire end hole 2 to be connected with the transformer wire clamp, and a transformer pile head extends into the cover body 1 from the pile head end hole 3 to be connected with a transformer; then the bolts at all parts are screwed up through the working holes 7; finally, each sealing cover 8 is combined to finish the installation.

It can be appreciated that, since the cover 1 is detachably formed by the cover body 1a and the bottom cover 1b, the transformer clip can be pre-installed in the cover body 1a and then the bottom cover 1b is assembled when leaving the factory. In addition, since the cover body 1a is provided with the working holes 7, and each working hole 7 is sealed by the sealing cover 8, when in field installation, bolts at all positions can be screwed through the working holes 7 and then all the sealing covers 8 are combined, so that the installation is completed. Compared with the introduction of the background technology, the pre-installation type transformer wire clamp insulating cover is structurally optimized, the cover body 1 is integrally seamless, and gaps cannot exist in the cover body 1 after installation is completed, so that reliable sealing of a wire clamp and a wire connector is realized, and the running stability of a power grid is improved.

It should be noted that, the number of the sealing covers 8 corresponds to the number of the working holes 7 one by one, and those skilled in the art can design the specific number and specific positions of the working holes 7 according to the actual situation, and the number and the opening positions of the working holes 7 are not limited in more detail herein. For example, when the cover body 1a is in a rectangular shape as a whole, a working hole 7 may be formed on the top surface and both side surfaces of the cover body 1a, respectively, for easy installation.

In addition, the cover body 1 of the pre-installed transformer wire clamp insulating cover can be made of reinforced flame-retardant plastic, and the sealing cover 8 can be made of flame-retardant silica gel. Compared with the prior art that the whole cover body 1 is made of silica gel, the material cost is also greatly saved on the premise of no seam.

As shown in fig. 3, 5, and 6, in some particular embodiments, each working aperture 7 on the mask body 1a has an aperture flange 9 protruding from the outer surface of the mask body 1 a. The sealing cover comprises a cover body 8a and a sealing body 8b arranged on the end face of the cover body 8a facing the cover body 1a, wherein the cover body 8a is used for covering the corresponding working hole 7, and the sealing body 8b is attached to the inner hole wall of the hole flange 9 of the corresponding working hole 7. After the sealing cover 8 is closed, the sealing of the working hole 7 can be better realized through the cover body 8a and the sealing body 8 b.

More preferably, the sealing surface of the sealing body 8b, which is used for matching with the inner hole wall of the hole flange 9, is provided with a sealing convex ring 8c surrounding the circle, and the inner hole wall of the corresponding hole flange 9 is provided with a sealing groove for accommodating the sealing convex ring 8 c. After the sealing cover 8 is closed, the sealing convex ring 8c on the sealing body 8b is matched with the sealing groove on the inner hole wall of the hole flange 9, so that the sealing effect on the working hole 7 is improved.

More preferably, the sealing surface of the sealing body 8b for cooperation with the hole flange 9 is a tapered conical surface tapering from the side closer to the lid body 8a to the side farther from the lid body 8 a. The tapered conical surface plays a guiding role, and when the sealing cover 8 is covered, the sealing flange 8c on the sealing body 8b can smoothly slide into the sealing groove on the inner hole wall of the hole flange 9 through the guiding of the tapered conical surface.

As shown in fig. 2, 5, 7 and 8, a wire sealing sleeve 4 is fixedly arranged in the wire end hole 2 of the cover body 1, the wire sealing sleeve 4 is in airtight connection with the inner hole wall of the wire end hole 2, a wire passing hole 5 for a wire to pass through is formed in the wire sealing sleeve 4, and an annular sealing bulge 6 is arranged on the inner hole wall of the wire passing hole 5.

When in practical application, a power transmission wire extends into the cover body 1 through the wire passing hole 5 of the wire sealing sleeve 4 and is connected with the transformer wire clamp, and the wire can be in interference fit with the annular sealing bulge 6 by virtue of the elasticity of the annular sealing bulge 6, so that the sealing effect on the wire end hole 2 is improved, and rainwater can not flow into the cover body along the wire.

It should be noted that, the wire sealing sleeve 4 may be made of flame retardant silicone rubber, and the sealing protrusion 6 and the wire may be tightly matched with better sealing performance by utilizing the soft elastic property of the silicone rubber. The person skilled in the art can design the number of via holes 5 of the wire sealing sleeve 4 according to the actual situation, for example the number of via holes 5 can be designed as one or two or three according to the actual situation.

In other specific embodiments, the number of the annular sealing protrusions 6 is at least one, and the at least one annular sealing protrusion 6 is sequentially spaced apart along the length direction of the via hole 5. Preferably, the number of the annular sealing protrusions 6 in the via hole 5 may be designed to be two or more, so that the sealing effect on the wire end hole 2 is further improved by multiple sealing.

In order to facilitate the installation of the wire sealing sleeve 4 in the present utility model, as shown in fig. 5, the wire sealing sleeve 4 and the inner hole wall of the wire end hole 2 may be fixed by glue adhesion.

As shown in fig. 2, 5 and 9, the pre-installed transformer wire clamp insulating cover further comprises a protecting group 10 for covering the transformer pile head, wherein the protecting group 10 is arranged in the pile head end hole 3 of the cover body 1, so that the protection of the transformer pile head is realized. When the pile head end hole 3 is provided on the bottom cover 1b of the cover body 1, the protector 10 can be mounted on the bottom cover 1b.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

It should be appreciated that the use of "systems," "devices," "units," and/or "modules" in this disclosure is but one way to distinguish between different components, elements, parts, portions, or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

As used in the specification and in the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

Wherein, in the description of the embodiments of the present utility model, unless otherwise indicated, "/" means or, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present utility model, "plurality" means two or more than two.

The terms "first" and "second" are used below 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

If a flowchart is used in the present utility model, the flowchart is used to describe the operations performed by a system according to an embodiment of the present utility model. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these processes.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The pre-installed insulating cover for the transformer wire clamp comprises a cover body, wherein the cover body is provided with a wire end hole for a wire to extend into and a pile head end hole for a transformer pile head to extend into, and is provided with an inner cavity for accommodating the transformer wire clamp, and the inner cavity is communicated with the wire end hole and the pile head end hole; it is characterized in that the method comprises the steps of,

the cover body comprises a cover body with an opening at the bottom and a bottom cover for sealing the opening, the bottom cover is detachably connected with the cover body, a plurality of working holes which are communicated with the inner cavity and the outside of the cover body are formed in the cover body, and each working hole is sealed through a corresponding sealing cover.

2. The pre-installed transformer clip insulating cover of claim 1, wherein each of the working holes has a hole flange protruding from an outer surface of the cover body;

the sealing cover comprises a cover body and a sealing body arranged on the end face of the cover body, which faces the cover body, wherein the cover body is used for covering the corresponding working hole, and the sealing body is attached to the inner hole wall of the hole flange of the corresponding working hole.

3. The pre-installed transformer clip insulating cover according to claim 2, wherein a sealing surface of the sealing body for being matched with an inner hole wall of the hole flange is provided with a sealing convex ring surrounding a circle, and a sealing groove for accommodating the sealing convex ring is arranged on the inner hole wall of the corresponding hole flange.

4. A pre-installed transformer clip insulating cover according to claim 3, wherein the sealing surface of the sealing body for engagement with the hole flange is a tapered conical surface tapering from a side adjacent the cover to a side remote from the cover.

5. The pre-installed transformer clip insulating cover of claim 1, wherein the cover body and the bottom cover are of flame retardant plastic material;

the sealing cover is made of flame-retardant silica gel.

6. The pre-installed transformer clip insulating cover according to any one of claims 1-5, wherein a wire sealing sleeve is fixedly arranged in the wire end hole of the cover body, the wire sealing sleeve is in airtight connection with an inner hole wall of the wire end hole, a wire passing hole through which a wire passes is formed in the wire sealing sleeve, and an annular sealing protrusion is arranged on the inner hole wall of the wire passing hole.

7. The pre-installed transformer clip insulating cover of claim 6, wherein the number of annular sealing protrusions is at least one, and at least one of the annular sealing protrusions is sequentially spaced apart along the length of the via hole.

8. The pre-installed transformer clip insulating cover of claim 7, wherein the wire gland is secured to the inner bore wall of the wire end bore by glue.

9. The pre-installed transformer clip insulating cover of claim 7, wherein the wire sealing sleeve is a silicone material.

10. The pre-installed transformer clip insulating cover of claim 1, further comprising a shroud for covering a transformer pile head, the shroud being disposed in the pile head end hole.