CN219609125U - Novel tool for testing bushings of various voltage classes - Google Patents

Abstract

The utility model relates to the technical field of transformer accessories, in particular to a novel tool for testing bushings of various voltage levels, which comprises an oil drum with an upward opening, wherein a top cover is covered on the oil drum, the top surface of the top cover is downwards sunken with a groove, the inner wall of the bottom surface of the groove is downwards provided with a through groove, the bushing is fixedly arranged in the groove, an oil immersing part of the bushing penetrates into the oil drum through the through groove and penetrates out of the oil drum to be sealed, and oil in the oil drum is contacted with the bottom surface of the groove. When the oil is heated, the oil can rise into the expansion space between the top cover 2 and the oil, so that the oil can be effectively prevented from overflowing caused by thermal expansion. Therefore, on the premise of meeting the same functions of installing the oil storage cabinet at the top of the oil tank, compared with the oil storage cabinet, the oil storage cabinet is simpler in structure, simple to install, wide in thermal expansion range and high in efficiency level.

Description

Novel tool for testing bushings of various voltage classes

Technical Field

The utility model belongs to the technical field of transformer accessories, and particularly relates to a novel tool for testing bushings of various voltage classes.

Background

At present, the electrical performance indexes of each voltage class sleeve for the oil immersed transformer are insulation level, partial discharge capacity and dielectric loss factor. How to test the performance and quality of the sleeve generally adopts the following two ideas: 1. the sleeve is arranged on the oil immersed power transformer body, a test is carried out with the oil immersed power transformer body, and the performance and quality of the sleeve are judged according to the test result of the oil immersed power transformer body; 2. the small-size oil tank that is used for sleeve pipe performance test alone is made, because the expend with heat and contract with cold of oil in the oil tank needs to be compensated, consequently need install the oil storage cabinet at the oil tank top for the oil that is heated the expansion fills in the oil storage cabinet and flows from the oil storage cabinet again when returning to room temperature.

The two sleeve inspection modes are adopted, the first sleeve is tested along with the transformer, the sleeve can be judged to be free of problems when the test is qualified, and once the problem occurs in the test, whether the problem of the sleeve or the problem of the transformer body is difficult to be clearly judged; the second kind uses sleeve pipe frock, but because oil tank top installation oil storage cabinet, installation work is loaded down with trivial details, and efficiency level is lower.

Disclosure of Invention

The utility model provides a novel tool for testing bushings of various voltage classes, which is used for solving the defects in the prior art.

The utility model is realized by the following technical scheme:

a novel frock for each voltage class sleeve pipe is experimental, includes ascending oil drum of opening, the oil drum upper cover has the top cap, the top surface of top cap undercut has the recess, and the bottom surface inner wall of recess has set up the groove that permeates downwards, and the sleeve pipe is fixed to be set up in the recess and the sleeve pipe immersion oil portion penetrates in the oil drum and wears out the department and seal through permeating the groove, oil in the oil drum and recess bottom surface contact.

In the use process, the oil in the oil drum is positioned at the bottom surface of the groove, and the groove is formed by downwards sinking the top cover, so that a certain expansion space exists between the bottom surface of the top cover and the oil, when the oil is overheated and expands, the oil can rise into the expansion space, and returns to the original liquid level when returning to normal, thereby further meeting the effect of the oil storage cabinet in the prior art, and meanwhile, compared with the installation of the oil storage cabinet, the oil storage cabinet has simpler structure.

Preferably, the sleeve is sealed with the through groove through the flange and is fixedly connected in the groove.

Preferably, the oil drum is of a cylindrical drum type structure. The oil drum is of a cylindrical drum type structure, so that the oil drum can be conveniently arranged in the pit on site, and the space utilization rate is greatly improved.

Preferably, the top cover is provided with an oil inlet hole, the oil inlet hole is buckled by the end cover, and the oil inlet hole can supplement oil into the oil drum when needed.

Preferably, the top cover is further provided with a heat dissipation hole, and the heat dissipation hole surrounds the outer side of the groove. The heat dissipation holes play a role in heat dissipation of the hot oil in the oil drum, so that the oil is quickly returned to the room temperature state.

Preferably, the annular plate is covered above the heat dissipation holes, the sleeve penetrates through an annular groove of the annular plate, and the annular plate is fixedly connected with the top cover through the support rods. The annular plate is located above the radiating holes, so that dust can be effectively prevented from entering the oil through the radiating holes.

The beneficial effects of the utility model are as follows: when the oil is heated, the oil can rise into the expansion space between the top cover and the oil, so that the oil can be effectively prevented from overflowing caused by thermal expansion. Therefore, on the premise of meeting the same functions of installing the oil storage cabinet at the top of the oil tank, compared with the oil storage cabinet, the oil storage cabinet is simpler in structure, simple to install, wide in thermal expansion range and high in efficiency level.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a partial enlarged view of fig. 1.

The figure shows:

1. the oil drum, 2, top cap, 3, recess, 4, flange, 5, louvre, 6, bracing piece, 7, annular plate, 8, sleeve pipe.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. 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.

A novel tool for testing the bushings of various voltage classes is shown in fig. 1 and 2. Including ascending oil drum 1 of opening, oil drum 1 upper cover has top cap 2, the top surface undercut of top cap 2 has recess 3, and the bottom surface inner wall of recess 3 has seted up the groove that permeates downwards, and sleeve pipe 8 is fixed to be set up in recess 3 through flange 4 and sleeve pipe 8 immersion oil portion penetrates in the oil drum 1 through the groove that permeates and is sealed through flange 4 at the place of wearing, oil in the oil drum 1 and the contact of recess 3 bottom surface.

In the use process, the oil in the oil drum 1 is positioned at the bottom surface of the groove 3, and the groove 3 is formed by downwards sinking the top cover 2, so that a certain expansion space exists between the bottom surface of the top cover 2 and the oil, when the oil is overheated and expands, the oil can rise into the expansion space, and returns to the original liquid level when returning to normal, thereby meeting the effect of the oil storage cabinet in the prior art, and meanwhile, compared with the oil storage cabinet, the structure is simpler.

The oil drum 1 is of a cylindrical drum type structure. The oil drum 1 is of a cylindrical drum type structure, can be conveniently arranged in a pit on site, and greatly improves the space utilization rate.

The top cover 2 is provided with an oil inlet hole which is buckled by the end cover, and the oil inlet hole can supplement oil into the oil drum 1 when needed.

The top cover 2 is also provided with a heat dissipation hole 5, the heat dissipation hole 5 surrounds the outer side of the groove 3, an annular plate 7 is covered above the heat dissipation hole 5, a sleeve penetrates through an annular groove of the annular plate 7, and the annular plate 7 is fixedly connected with the top cover 2 through a supporting rod 6. The heat dissipation effect on the hot oil in the oil drum 1 is achieved in the heat dissipation holes 5, so that the oil is quickly returned to a room temperature state, and the annular plate 7 is positioned above the heat dissipation holes 5, so that dust can be effectively prevented from entering the oil through the heat dissipation holes 5.

The beneficial effects of the utility model are as follows: when the oil is heated, the oil can rise into the expansion space between the top cover 2 and the oil, so that the oil can be effectively prevented from overflowing caused by thermal expansion. Therefore, on the premise of meeting the same functions of installing the oil storage cabinet at the top of the oil tank, compared with the oil storage cabinet, the oil storage cabinet is simpler in structure, simple to install, wide in thermal expansion range and high in efficiency level.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (6)

1. A novel frock for each voltage class sleeve pipe is experimental, its characterized in that: including the ascending oil drum of opening, the oil drum upper cover has the top cap, the top surface undercut of top cap has the recess, and the bottom surface inner wall of recess has offered down and has passed through the groove, and the sleeve pipe is fixed to be set up in the recess and the sleeve pipe soaking oil portion penetrates in the oil drum and wears to go out the department and seal through penetrating the groove, oil in the oil drum and recess bottom surface contact.

2. The novel tooling for each voltage class bushing test of claim 1, wherein: the sleeve is sealed with the through groove through the flange and is fixedly connected in the groove.

3. The novel tooling for each voltage class bushing test of claim 1, wherein: the oil drum is of a cylindrical drum type structure.

4. The novel tooling for each voltage class bushing test of claim 1, wherein: an oil inlet is formed in the top cover and buckled through the end cover.

5. The novel tooling for each voltage class bushing test of claim 1, wherein: and the top cover is also provided with a radiating hole, and the radiating hole surrounds the outer side of the groove.

6. The novel tooling for each voltage class bushing test of claim 5, wherein: the upper part of the heat dissipation hole is covered with an annular plate, the sleeve penetrates through an annular groove of the annular plate, and the annular plate is fixedly connected with the top cover through a supporting rod.