CN111276318A

CN111276318A - Intelligent distribution transformer terminal external hanging type CT protection box

Info

Publication number: CN111276318A
Application number: CN202010210649.1A
Authority: CN
Inventors: 张文明; 秦连永; 徐成; 刘纯; 强龙龙; 沈军; 刘帅; 李昊昊
Original assignee: State Grid Jiangsu Electric Power Co Ltd Suining County Power Supply Branch; State Grid Jiangsu Electric Power Co Ltd; Xuzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: State Grid Jiangsu Electric Power Co Ltd Suining County Power Supply Branch; State Grid Jiangsu Electric Power Co Ltd; Xuzhou Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-06-12

Abstract

The invention discloses an external hanging type CT (computed tomography) protection box of an intelligent distribution transformer terminal, which comprises a square box body, wherein the square box body is fixed on a transformer through a mounting bracket and used for covering CT equipment in the box body; the square box body comprises a top cover, a left side plate, a right side plate, a front door, a rear door and a bottom plate; the inner wall of the bottom plate is provided with CT equipment, and the outer wall of the bottom plate is connected with the mounting bracket; the left side plate and the right side plate are provided with ventilation openings for dissipating heat inside the box body; the front door and the rear door are provided with cable holes for cables to penetrate in and out; the top cover clamps the top of the left side plate, the right side plate, the front door and the rear door therein, and prevents rainwater from flowing into the box body. The intelligent distribution transformer terminal externally-hung CT protection box is a protection device covered outside a CT, and can protect the CT and a connecting wire from direct invasion of rainwater. In the daily use process, the device can also play a role in preventing external force damage and bird damage.

Description

Intelligent distribution transformer terminal external hanging type CT protection box

Technical Field

The invention relates to the field of intelligent distribution transformer terminals, in particular to an external hanging type CT (computed tomography) protection box of an intelligent distribution transformer terminal.

Background

A distribution Transformer substation (TTU) is an intelligent Terminal that is deployed by national grid companies according to a strong grid strategy and uses rural power grid intellectualization as a test point. The terminal integrates functions of remote measurement, remote signaling, meter reading, statistics and wireless communication, and has the characteristics of strong stability, high reliability, good real-time performance, strong functions and the like. Particularly, the terminal can actively report the power utilization parameters of the user and some important information and alarm information in the operation of the terminal or call for measurement and report, so that the system is favorable for checking and preventing electricity theft, and the system has direct effects on reducing line loss and improving the economic benefit of power supply enterprises and the real-time property of cell meter reading.

In the process of construction and installation of the intelligent distribution transformer terminal, a through-winding type CT (current transformer) is required to be installed on the low-voltage outgoing line side of the transformer, so that current data can be monitored. Currently, outdoor through-winding CT (current transformer) is used in the local area. Outdoor punching winding formula CT (current transformer) body measurement accuracy is high, and application range is wide, but the equipment body exposes in the open air, and the plug of connecting wire department has into the rainwater and leads to the possibility of short circuit, has the potential safety hazard. From the technical point of view at present, the waterproof grade of a connecting line plug of a CT (current transformer) is improved to a certain degree, and the connecting line plug cannot fly over qualitatively in a short period.

Disclosure of Invention

The invention provides an external hanging type CT (computed tomography) protection box for an intelligent distribution transformer terminal, which is used for solving the defects in the prior art.

The invention is realized according to the following technical scheme:

an external hanging type CT protection box of an intelligent distribution transformer terminal comprises a square box body, wherein the square box body is fixed on a transformer through a mounting bracket and used for covering CT equipment inside the box body;

the square box body comprises a top cover, a left side plate, a right side plate, a front door, a rear door and a bottom plate;

the inner wall of the bottom plate is provided with CT equipment, and the outer wall of the bottom plate is connected with the mounting bracket;

the left side plate and the right side plate are provided with ventilation openings for dissipating heat inside the box body;

the front door and the rear door are provided with cable holes for cables to penetrate in and out;

the top cover clamps the top of the left side plate, the right side plate, the front door and the rear door therein, and prevents rainwater from flowing into the box body.

The front door and the rear door are arranged on the inner walls of the front door and the rear door, and the front door and the rear door are provided with cable holes concentric with the front door and the rear door.

Furthermore, two symmetrical convex plates are respectively arranged on two sides of the inner wall of the left side plate and the right side plate, and nuts are arranged on the convex plates; the two sides of the front door and the rear door are respectively provided with a symmetrical screw hole, the front door and the rear door are provided with screw holes concentric with the front door and the rear door, and a bolt penetrates through the screw holes and is screwed in a nut for fastening, so that the front door and the rear door, and the left side plate and the right side plate are connected.

Further, a distance is reserved between the convex plate and the edges of the two sides of the front door and the rear door, so that the front door, the rear door and the front door insulating plate are embedded into the left side plate and the right side plate.

Further, the device also comprises an upper panel; the upper panel is a bent plate bent at right angles for many times, the top of the upper panel is connected with the inner wall of the top cover, and the bottom of the upper panel is connected with the convex plate; gaps between the top cover and the front and rear doors and between the top cover and the insulating plates of the front and rear doors are filled through the upper panel.

Further, the device also comprises a lower panel; the lower panel is a bent plate bent at right angles for many times, the bottom of the lower panel is connected with the inner wall of the bottom plate, and the top of the lower panel is connected with the convex plate; gaps between the bottom plate and the insulating plates of the front door, the rear door and the front door are filled through the lower panel.

Furthermore, the top surfaces of the left side plate and the right side plate are provided with a convex block, and the convex block is provided with a screw hole; two symmetrical screws are respectively arranged on two sides of the inner wall of the top cover and penetrate through the screw holes to be fastened through nuts, so that the top cover is connected with the left side plate and the right side plate.

Furthermore, a plurality of CT equipment mounting holes are formed in the bottom plate; the CT equipment mounting hole is composed of a through hole in the middle and strip holes which are symmetrically arranged and located on two sides of the through hole.

Furthermore, the cross section of the mounting bracket is Z-shaped, screw holes are respectively formed in the periphery of the bottom plate, the mounting bracket is provided with screw holes concentric with the bottom plate, and a bolt penetrates through the screw holes and then is screwed into a nut for fastening, so that the mounting bracket is connected with the bottom plate.

Furthermore, the ventilation opening is composed of a plurality of rows of fish scale punching meshes.

The invention has the beneficial effects that:

the intelligent distribution transformer terminal externally-hung CT protection box is a protection device covered outside a CT, and can protect the CT and a connecting wire from direct invasion of rainwater. In the daily use process, the device can also play a role in preventing external force damage and bird damage.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a structural diagram of an external CT protection box of an intelligent distribution transformer terminal;

FIG. 2 is a view showing the structure of the plane A-A of FIG. 1;

FIG. 3 is a view from side B-B of FIG. 1;

FIG. 4 is a top cover structure of the present invention (a is a front view, b is a side view);

FIG. 5 is a structural view of the left and right side plates of the present invention (a is a front view, b is a side view, and c is a top view);

FIG. 6 is a top panel structure of the present invention (a is a front view, b is a side view);

FIG. 7 is a front and rear door structure view (a is a front view, b is a side view) of the present invention;

FIG. 8 is a structural view of the front and rear door insulating panels of the present invention (a is a front view, and b is a side view);

FIG. 9 is a view showing the structure of a lower panel of the present invention (a is a front view, and b is a side view);

FIG. 10 is a bottom plate block diagram of the present invention;

FIG. 11 is a view showing the construction of a mounting bracket according to the present invention (a is a front view, and b is a side view);

FIG. 12 is a view showing the construction of an application of the present invention (a is a front view, and b is a side view);

fig. 13 is an enlarged view of a portion a of fig. 12.

Reference numbers in the figures: 1-top cover, 2-left and right side plates, 3-upper panel, 4-front and rear doors, 5-front and rear door insulating plates, 6-lower panel, 7-bottom plate, 8-mounting bracket, 9-CT equipment, 11-screw, 21-ventilation opening, 22-convex plate, 23-convex block, 41-cable hole, 71-strip hole and 72-through hole.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention.

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 12 and 13, the external hanging CT protection box of the intelligent distribution transformer terminal comprises a square box body, wherein the square box body is fixed on a transformer through a mounting bracket so as to cover CT equipment inside the box body. The protective box can protect the CT and the connecting wires from being directly attacked by rainwater. In the daily use process, the device can also play a role in preventing external force damage and bird damage.

The following gives a preferred embodiment of the above embodiment with respect to a CT shield:

as shown in fig. 1, 2 and 3, the CT protection box is a square box body, and the square box body comprises a top cover 1, a left side plate 2, a right side plate 2, a front door 4, a rear door 4 and a bottom plate 7; the inner wall of the bottom plate 7 is provided with a CT device 9, and the outer wall of the bottom plate 7 is connected with a mounting bracket 8; the left side plate 2 and the right side plate 2 are provided with ventilation openings 21 for radiating heat inside the box body; the front door 4 and the rear door 4 are provided with cable holes 41 for cables to pass in and out; the top cover 1 clamps the top of the left and right side plates 2 and the front and rear doors 4 therein, so that rainwater is prevented from flowing into the box body.

The top cover 1, the left and right side plates 2, the upper panel 3, the front and rear doors 4, the lower panel 6, and the bottom plate 7 are all made of 304 stainless steel.

Further scheme: the door structure further comprises front and rear door insulation plates 5, the front and rear door insulation plates 5 are mounted on the inner walls of the front and rear doors 4, and cable holes concentric with the front and rear doors 4 are formed in the front and rear door insulation plates 5. Of course, other materials may be used and are not limited to the above materials.

The front and rear door insulating plates 5 are epoxy resin plates. Of course, other insulating materials may be used, and are not limited to the above-described insulating materials.

As shown in fig. 5, 7 and 8, two symmetrical convex plates 22 are respectively arranged on two sides of the inner wall of the left and right side plates 2, and nuts are arranged on the convex plates 22; two symmetrical screw holes are respectively formed in the two sides of the front door 4 and the rear door 4, screw holes concentric with the front door 4 and the rear door 4 are formed in the front door insulating plate 5 and the rear door insulating plate 5, and bolts penetrate through the screw holes and are screwed into nuts for fastening, so that the front door 4 and the rear door insulating plate 5 are connected with the left side plate and the right side plate 2.

Further scheme: the distance is reserved between the convex plate 22 and the two side edges of the front and rear doors 4, so that the front and rear doors 4 and the front and rear door insulating plates 5 are embedded in the left and right side plates 2.

As shown in fig. 2 and 6, the utility model also comprises an upper panel 3; the upper panel 3 is a bent plate bent at right angles for many times, the top of the upper panel 3 is connected with the inner wall of the top cover 1, and the bottom of the upper panel 3 is connected with the convex plate 22; gaps between the top cover 1 and the front and rear doors 4 and the front and rear door insulating plates 5 are filled with the upper panel 3.

As shown in fig. 2 and 9, the utility model also comprises a lower panel 6; the lower panel 6 is a bent plate bent at right angles for many times, the bottom of the lower panel 6 is connected with the inner wall of the bottom plate 7, and the top of the lower panel 6 is connected with the convex plate 22; gaps between the bottom plate 7 and the front and rear doors 4 and the front and rear door insulating plates 5 are filled with the lower panel 6.

As shown in fig. 4, the top surfaces of the left and right side plates 2 are provided with a projection 23, and the projection 23 is provided with a screw hole; two symmetrical screws 11 are respectively arranged on two sides of the inner wall of the top cover 1, and the screws 11 penetrate through the screw holes and then are fastened through nuts, so that the top cover 1 is connected with the left side plate 2 and the right side plate 2.

As shown in fig. 10, a plurality of CT device mounting holes are formed on the bottom plate 7; the mounting hole of the CT device consists of a through hole 72 in the middle and symmetrically arranged long holes 71 which are positioned at two sides of the through hole 72.

As shown in fig. 11, the cross section of the mounting bracket 8 is in a Z shape, screw holes are respectively formed around the bottom plate 7, screw holes concentric with the bottom plate 7 are formed in the mounting bracket 8, and a bolt is screwed into a nut to fasten the bolt after penetrating through the screw holes, so that the mounting bracket 8 is connected with the bottom plate 7.

With continued reference to fig. 2, the vent 21 is comprised of a plurality of rows of louvered mesh. Of course, other vent configurations may be used and are not limited to the configurations described above.

It should be noted that the above is a detailed description of the specific implementation of the present invention, but the present invention is not limited to the specific implementation described above, which is only an example, and it is within the scope of the present invention for those skilled in the art to make any equivalent modifications and substitutions regarding the structure of the top cover, the left and right side plates, the upper panel, the front and rear doors, the front and rear door insulating plates, the lower panel, and the bottom plate.

The intelligent distribution transformer terminal covers the outside protection device of the CT and can cover the whole CT in the box body, thereby effectively protecting the CT and the connecting wire from direct invasion and attack of rainwater and playing a role in preventing external damage and bird damage. In addition, the external hanging type CT protective box can be perfectly attached to the shell of the transformer, and is attractive and elegant; for example, in a certain area, after an externally-hung CT protection box is put into use, the current situation that the CT together leaks rain or is burnt or damaged does not exist.

Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.

Claims

1. The utility model provides an intelligence is joined in marriage outer hanging CT guard box in transformer terminal which characterized in that:

the CT equipment box comprises a square box body, wherein the square box body is fixed on a transformer through a mounting bracket and used for covering CT equipment in the box body;

2. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 1, characterized in that:

the front door and the rear door insulation boards are arranged on the inner walls of the front door and the rear door, and cable holes concentric with the front door and the rear door are formed in the front door and the rear door insulation boards.

3. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 2, characterized in that:

two symmetrical convex plates are respectively arranged on two sides of the inner wall of the left side plate and the right side plate, and nuts are arranged on the convex plates;

the two sides of the front door and the rear door are respectively provided with a symmetrical screw hole, the front door and the rear door are provided with screw holes concentric with the front door and the rear door, and a bolt penetrates through the screw holes and is screwed in a nut for fastening, so that the front door and the rear door, and the left side plate and the right side plate are connected.

4. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 3, characterized in that:

and a distance is reserved between the convex plate and the edges of the two sides of the front door and the rear door, so that the front door, the rear door and the front door insulating plate are embedded into the left side plate and the right side plate.

5. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 3, characterized in that:

also includes an upper panel; the upper panel is a bent plate bent at right angles for many times, the top of the upper panel is connected with the inner wall of the top cover, and the bottom of the upper panel is connected with the convex plate; gaps between the top cover and the front and rear doors and between the top cover and the insulating plates of the front and rear doors are filled through the upper panel.

6. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 3, characterized in that:

also includes a lower panel; the lower panel is a bent plate bent at right angles for many times, the bottom of the lower panel is connected with the inner wall of the bottom plate, and the top of the lower panel is connected with the convex plate; gaps between the bottom plate and the insulating plates of the front door, the rear door and the front door are filled through the lower panel.

7. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 1, characterized in that:

the top surfaces of the left side plate and the right side plate are provided with a convex block, and the convex block is provided with a screw hole;

two symmetrical screws are respectively arranged on two sides of the inner wall of the top cover and penetrate through the screw holes to be fastened through nuts, so that the top cover is connected with the left side plate and the right side plate.

8. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 1, characterized in that:

the bottom plate is provided with a plurality of CT equipment mounting holes; the CT equipment mounting hole is composed of a through hole in the middle and strip holes which are symmetrically arranged and located on two sides of the through hole.

9. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 1, characterized in that:

the cross-section of the mounting bracket is Z-shaped, screw holes are respectively formed in the periphery of the bottom plate, the mounting bracket is provided with the screw holes concentric with the bottom plate, and the bolts penetrate through the screw holes and are screwed into the nuts for fastening, so that the mounting bracket is connected with the bottom plate.

10. The intelligent distribution transformer terminal externally-hung CT protective box according to claim 1, characterized in that:

the ventilation opening is composed of a plurality of rows of fish scale punching meshes.