CN217035320U

CN217035320U - A case lid for oil-immersed power transformer

Info

Publication number: CN217035320U
Application number: CN202220887893.6U
Authority: CN
Inventors: 周静; 张孝金
Original assignee: Jiangsu Huachen Transformer Co ltd
Current assignee: Jiangsu Huachen Transformer Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-07-22
Anticipated expiration: 2032-04-18

Abstract

The utility model discloses a box cover for an oil-immersed power transformer, which comprises a transformer main body, a box cover, a plurality of screws and a plurality of screw protection mechanisms, wherein the box cover is arranged on the transformer main body; the side wall of the upper end face of the transformer main body is connected with a box edge; the box cover is connected to the upper end face of the transformer main body, is used for sealing the transformer main body and is used for installing other equipment; the screw thread is connected on the box edge and the box cover and is used for fixing the box cover; the number of the screw protection mechanisms is equal to that of the screws, the screw protection mechanisms are arranged in one-to-one correspondence with the screws, and the screw protection mechanisms are arranged on the outer sides of the screws. According to the utility model, the transformer box cover is cut according to the processing size and then is not bent, namely, the box cover and the box edge are directly connected and fixed together by using the nut and the screw, so that the performance of the transformer in the aspect of strength can be ensured, the manufacturing and using convenience of the transformer can also be ensured, the process difficulty is reduced, and the production cost is reduced.

Description

A case lid for oil-immersed power transformer

Technical Field

The utility model belongs to the technical field of transformer manufacturing, and particularly relates to a box cover for an oil-immersed power transformer.

Background

The transformer is a device for changing alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core (magnetic core), and the transformer has the following main functions: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer), and the like.

When an existing transformer is produced, a transformer box cover of the existing transformer is cut according to the size and then bent, and then the transformer box cover and a box edge are connected and fixed together through nuts and screws, so that the transformer is tidy and standard, but the whole transformer is troublesome to manufacture, the process difficulty is increased, and the whole production cost of the transformer is easily increased.

Therefore, in view of the above technical problems, it is necessary to provide a tank cover for an oil-filled power transformer.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a box cover for an oil-immersed power transformer, and aims to solve the problems of high difficulty in manufacturing the box cover of the transformer and high production cost.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

a box cover for an oil-immersed power transformer comprises a transformer main body, a box cover, a plurality of screws and a plurality of screw protection mechanisms;

the side wall of the upper end face of the transformer main body is connected with a box edge;

the box cover is connected to the upper end face of the transformer main body, is used for sealing the transformer main body and is used for installing other equipment;

the screw is in threaded connection with the box edge and the box cover and is used for fixing the box cover;

the number of the screw protection mechanisms is equal to that of the screws, the screw protection mechanisms are arranged in a one-to-one correspondence with the screws, and the screw protection mechanisms are arranged on the outer sides of the screws.

Further, the screw protection mechanism comprises a protection cover for protecting the screw so that the screw is not easily corroded by external moisture or rainwater so as to be convenient for a user to subsequently disassemble the screw, and the protection cover is arranged on the outer side of the screw;

and the protective cover is provided with a sliding rod in a sliding manner and used for connecting the extrusion column and the pressing plate.

Further, the slide bar is located one end in the safety cover is connected with the extrusion post, the extrusion post is located in the screw groove of screw, through inserting the extrusion post into the screw groove of screw for the protection screw groove for the screw groove is difficult by external moisture or rainwater erosion, so that the user utilizes the instrument to dismantle the screw, makes the screw difficult the smooth silk phenomenon that appears when dismantling.

Furthermore, one end of the sliding rod, which is far away from the extrusion column, is connected with a pressing plate, so that a user can conveniently pull the sliding rod to slide;

the diameter of pressing the clamp plate is greater than the diameter of slide bar for shelter from the slide bar, make in the difficult gap from the slide bar of external rainwater infiltrates the safety cover.

Furthermore, safety cover and extrusion post are the rubber material, increase the life of safety cover and extrusion post, also can reduce the safety cover and extrude the post and cause the influence to the use of transformer main part and screw simultaneously.

Further, be connected with the spacing ring on the lateral wall of slide bar, it has the spacing groove to open in the safety cover, the spacing ring slides and locates the spacing inslot, slides in the spacing groove through the spacing ring for spacing slide bar makes the difficult roll-off safety cover of slide bar, in addition, through the slip of spacing ring in the spacing inslot, can make screw protection mechanism can be applicable to the screw of different models, has enlarged holistic application scope.

Compared with the prior art, the utility model has the following advantages:

according to the utility model, the transformer box cover is cut according to the processing size and then is not bent, namely, the box cover and the box edge are directly connected and fixed together by using the nut and the screw, so that the performance of the transformer in the aspect of strength can be ensured, the manufacturing and using convenience of the transformer can also be ensured, the process difficulty is reduced, and the production cost is reduced.

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, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a front view of a tank cover for an oil-filled power transformer according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a top view of a tank cover for an oil-filled power transformer according to an embodiment of the present invention;

FIG. 4 is a partial sectional view showing a screw mounting state according to an embodiment of the present invention;

FIG. 5 is a schematic view of the structure at B in FIG. 4;

fig. 6 is a perspective view of a screw protection mechanism according to an embodiment of the utility model.

In the figure: 1. the transformer comprises a transformer main body, 101, a box edge, 2, a box cover, 3, screws, 4, a screw protection mechanism, 401, a protection cover, 402, a sliding rod, 403, an extrusion column, 404, a pressing plate, 405, a limiting ring and 406, a limiting groove.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The present invention is not limited to the embodiments, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.

The utility model discloses a tank cover for an oil-immersed power transformer, which is shown in figures 1-6 and comprises a transformer main body 1, a tank cover 2, a plurality of screws 3 and a plurality of screw protection mechanisms 4.

The upper end face side wall of the transformer main body 1 is connected with a tank edge 101 for installing the tank cover 2.

In addition, the tank cover 2 is attached to an upper end surface of the transformer main body 1, and is used for sealing the transformer main body 1 and for mounting other devices.

Specifically, screws 3 are screwed to the case rim 101 and the case cover 2 for fixing the case cover 2, and the mounting positions of the screws 3 are shown in fig. 3.

Referring to fig. 1-6, the number of the screw protection mechanisms 4 is equal to the number of the screws 3, the screw protection mechanisms 4 are arranged in a one-to-one correspondence with the screws 3, the screw protection mechanisms 4 are arranged outside the screws 3, and the screw protection mechanisms 4 are used for protecting the screws 3, so that the screws 3 are not easily corroded by rainwater or moisture in a long-time use process, the screws 3 are convenient for a user to disassemble in a later stage, and the screws 3 are not easy to slip.

Wherein, screw protection mechanism 4 includes safety cover 401 for protecting screw 3, makes screw 3 be difficult for being corroded by external moisture or rainwater, so that the user follow-up screw 3 of dismantling, and safety cover 401 locates the outside of screw 3.

Preferably, the shape of the protective cap 401 is as shown in fig. 4, that is, the protective cap 401 can completely protect the screw 3, so that the screw 3 is not easily corroded by rain or moisture.

In addition, a sliding rod 402 is slidably disposed on the protection cap 401 to connect the pressing column 403 and the pressing plate 404.

Specifically, the one end of the slide bar 402 located in the protective cover 401 is connected with the extrusion column 403, and the extrusion column 403 is arranged in the screw groove of the screw 3, and is used for protecting the screw groove by inserting the extrusion column 403 into the screw groove of the screw 3, so that the screw groove is not easily corroded by external moisture or rainwater, and the screw 3 is detached by a user by using a tool, and the screw 3 is not easily slippery when detached.

Preferably, the shape of the pressing post 403 may be set according to a screw groove of the screw 3 so that the pressing post 403 can be inserted into the screw groove of the screw 3.

Referring to fig. 1-6, a pressing plate 404 is connected to an end of the sliding rod 402 away from the pressing column 403, so that a user can conveniently pull the sliding rod 402 to slide.

The diameter of the pressing plate 404 is greater than that of the sliding rod 402, and the pressing plate is used for shielding the sliding rod 402, so that external rainwater is not easy to permeate into the protective cover 401 from gaps of the sliding rod 402.

In addition, the protective cover 401 and the extrusion column 403 are made of rubber materials, so that the service lives of the protective cover 401 and the extrusion column 403 are prolonged, and the influence of the protective cover 401 and the extrusion column 403 on the use of the transformer body 1 and the screws 3 can be reduced.

Specifically, be connected with spacing ring 405 on the lateral wall of slide bar 402, the division has spacing groove 406 in the safety cover 401, spacing ring 405 slides and locates in spacing groove 406, slide in spacing groove 406 through spacing ring 405 for spacing slide bar 402 makes slide bar 402 be difficult for roll-off safety cover 401, in addition, through the slip of spacing ring 405 in spacing groove 406, can be so that screw protection mechanism 4 can be applicable to the screw 3 of different models, has enlarged holistic application scope.

When the transformer case is used specifically, the case cover 2 is in threaded connection with the transformer main body 1 and the case edge 101 through the plurality of screws 3, after the case cover 2 is installed, the screw protection mechanism 4 is sleeved on the outer side of the screws 3, specifically, the extrusion columns 403 on the sliding rods 402 are inserted into the screw grooves on the screws 3 and used for protecting the screw grooves of the screws 3, in addition, the screws 3 can be integrally protected through the arrangement of the protection cover 401, so that the screws 3 are not easily corroded by moisture or rainwater, the probability of rusting of the screws 3 is reduced, a user can conveniently detach the screws 3 subsequently, and the screw grooves of the screws 3 are not easily subjected to wire slipping;

through the arrangement of the limiting groove 406 in the protective cover 401, the sliding of the sliding rod 402 can be freely adjusted, namely, the extrusion column 403 can protect screws 3 of different types, and the whole use is enlarged.

According to the technical scheme, the utility model has the following beneficial effects:

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A case lid for oil-filled power transformer, characterized by, includes:

the transformer comprises a transformer body (1), wherein a box edge (101) is connected to the side wall of the upper end face of the transformer body (1);

the box cover (2) is connected to the upper end face of the transformer main body (1), is used for sealing the transformer main body (1) and is used for installing other equipment;

the screws (3) are in threaded connection with the box edge (101) and the box cover (2) and are used for fixing the box cover (2);

a plurality of screw protection mechanisms (4), the quantity of screw protection mechanism (4) with the quantity of screw (3) equals, screw protection mechanism (4) and screw (3) one-to-one set up, and the outside of screw (3) is located in screw protection mechanism (4).

2. The tank cover for the oil-filled power transformer according to claim 1, characterized in that the screw protection mechanism (4) comprises a protection cover (401), the protection cover (401) is arranged outside the screw (3), and a sliding rod (402) is slidably arranged on the protection cover (401).

3. The tank cover for the oil-immersed power transformer according to claim 2, wherein one end of the sliding rod (402) in the protective cover (401) is connected with a squeezing column (403), and the squeezing column (403) is arranged in a screw groove of the screw (3).

4. A tank cover for an oil-filled power transformer according to claim 3, characterized in that a pressing plate (404) is connected to one end of the sliding rod (402) far away from the pressing column (403), and the diameter of the pressing plate (404) is larger than that of the sliding rod (402).

5. A tank cover for an oil-filled power transformer according to claim 4, characterized in that the protecting cover (401) and the pressing column (403) are both made of rubber.

6. The tank cover for the oil-filled power transformer according to claim 4, wherein a limiting ring (405) is connected to a side wall of the sliding rod (402), a limiting groove (406) is bored in the protective cover (401), and the limiting ring (405) is slidably disposed in the limiting groove (406).