CN212587267U

CN212587267U - Insulating sleeve grading ring structure

Info

Publication number: CN212587267U
Application number: CN202021859730.4U
Authority: CN
Inventors: 吴国荣; 赖衍燊; 陈福燕; 杨国旗; 邱骞
Original assignee: Liansheng Paper Industry Longhai Co ltd
Current assignee: Liansheng Paper Industry Longhai Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-02-23
Anticipated expiration: 2030-08-31

Abstract

The utility model relates to an insulation sleeve grading ring structure, which comprises a sleeve and a grading ring; a flange is arranged on the outer side of the middle part of the sleeve, a through hole for accommodating a bus copper bar to pass through is formed in the inner side of the sleeve, and a high-voltage shielding cover and a grounding end shielding cover are arranged in the sleeve; the grading ring is sleeved between the inner side of the sleeve and the busbar bar, a lead is arranged on the inner side of the grading ring, and the lead is used for connecting the busbar bar. Increase an equalizer ring between busbar copper bar and insulation support, voltage effective evenly distributed on the high-voltage busbar copper bar is intraductal at insulation support to make the voltage of generating line and the electric field of ground shield cover become even, the air between busbar copper bar and the insulation support is "strideed across", stabilizes power supply and distribution system, reinforcing insulation support long service life, improves distribution system's security and reliability of operation, reduces the loss of company.

Description

Insulating sleeve grading ring structure

Technical Field

The utility model relates to a high-voltage insulation sleeve field, in particular to insulation sleeve equalizer ring structure.

Background

The high-voltage shielding cover and the grounding end shielding cover are cast and packaged in the bus sleeve before the conventional 35KV power distribution cabinet is manufactured. When the high-voltage shielding cover operates, the high-voltage shielding cover is led to high voltage through the lead, and the grounding end shielding cover is connected with the ground through the installation insert, so that weak link air between the high voltage and the ground is crossed, and discharge between a high-voltage wire and the ground can be prevented.

However, abnormal sounds are frequently clicked in a 35KV tail end power distribution cabinet of the voltage reduction station, a bus chamber of the power distribution cabinet is opened, the fact that a local insulating layer of a bus copper bar is burnt is found through inspection, the shape of the burnt mark is observed, the shape of the burnt mark is carefully researched and analyzed, and uneven discharge of an electric field between a high-voltage bus and an insulating sleeve is caused. Because the voltage distribution of the bus and the insulating sleeve is uneven, when moisture enters a gap between the bus and the insulating sleeve, the moisture can discharge in the air gap between the bus and the insulating sleeve, the strength of the insulating sleeve is damaged, and the service life of the insulating sleeve is long. Meanwhile, the power supply system is unstable, and 35KV high-voltage short-circuit explosion is easily induced, so that the loss caused by power failure in a large area is serious. 1

SUMMERY OF THE UTILITY MODEL

Therefore, the insulating sleeve grading ring structure is needed to be provided for solving the technical problems that the voltage distribution of the bus and the insulating sleeve is not uniform, the air gap between the bus and the sleeve discharges, the insulating sleeve is damaged, the service life of the insulating sleeve is shortened, and meanwhile, safety accidents are easily caused.

In order to achieve the above object, the inventor provides an insulation sleeve grading ring structure, which comprises a sleeve and a grading ring;

a flange is arranged on the outer side of the middle part of the sleeve, a through hole for accommodating a bus copper bar to pass through is formed in the inner side of the sleeve, and a high-voltage shielding cover and a grounding end shielding cover are arranged in the sleeve;

the grading ring is sleeved between the inner side of the sleeve and the busbar bar, a lead is arranged on the inner side of the grading ring, and the lead is used for connecting the busbar bar.

As a preferred structure of the utility model, the equalizer ring is the cast, and equalizer ring cross sectional shape is similar with generating line copper bar cross sectional shape.

As an optimized structure of the utility model, the grading ring side distribution has the sieve mesh.

As an optimized structure of the utility model, the grading ring is formed by pressing the hems at the two ends of the metal sieve plate.

As an optimized structure of the utility model, the surface of the grading ring is galvanized.

As the utility model discloses a preferred structure, be equipped with coupling nut on the lead wire of equalizer ring, the generating line copper bar is equipped with connecting bolt for install equalizer ring lead wire.

As an optimal structure of the utility model, the coating has glass to glue between the lead wire of equalizer ring and the generating line copper bar.

As an optimized structure of the utility model, the outside of the sleeve is provided with an umbrella skirt.

The technical scheme is different from the prior art, and the insulating sleeve grading ring structure comprises a sleeve and a grading ring; a flange is arranged on the outer side of the middle part of the sleeve, a through hole for accommodating a bus copper bar to pass through is formed in the inner side of the sleeve, and a high-voltage shielding cover and a grounding end shielding cover are arranged in the sleeve; the grading ring is sleeved between the inner side of the sleeve and the busbar bar, a lead is arranged on the inner side of the grading ring, and the lead is used for connecting the busbar bar. Increase an equalizer ring between busbar copper bar and insulation support, voltage effective evenly distributed on the high-voltage busbar copper bar is intraductal at insulation support to make the voltage of generating line and the electric field of ground shield cover become even, the air between busbar copper bar and the insulation support is "strideed across", stabilizes power supply and distribution system, reinforcing insulation support long service life, improves distribution system's security and reliability of operation, reduces the loss of company.

Drawings

Fig. 1 is a schematic front view of an insulation sleeve grading ring structure according to an embodiment;

FIG. 2 is a schematic top view of an embodiment of an insulating sleeve grading ring structure;

fig. 3 is a schematic right-view diagram of an insulation sleeve grading ring structure according to an embodiment.

Description of reference numerals:

10. a sleeve;

11. a flange; 111. connecting a threaded hole; 12. a high voltage shield; 13. a ground shield; 14. a through hole; 15. mounting a plate; 151. mounting holes; 16. an umbrella skirt;

20. a grading ring;

21. a lead wire;

30. a bus copper bar;

31. and (4) bolts.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described with reference to the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

Referring to fig. 1 to fig. 3, the present embodiment relates to a grading ring 20 structure of an insulating sleeve 10, which includes a sleeve 10 and a grading ring 20. The through-wall insulating sleeve 10 is used for a 35KV tail end power distribution cabinet of a voltage reduction station, and the specification of the adapted bus copper bar 30 is 80mm multiplied by 10 mm.

The outside of sleeve pipe 10 middle part is equipped with flange 11, and the sleeve pipe 10 inboard is equipped with the through-hole 14 that holds busbar copper bar 30 and pass through, and sleeve pipe 10 is inside to be equipped with high-voltage shield cover 12 and ground connection end shield cover 13. Specifically, sleeve pipe 10 is the cast, cross section length is greater than the width, it is excessive that a semicircle is from top to bottom respectively, shape and generating line copper bar 30 adaptation, sleeve pipe 10 outside middle part flange 11 is the rectangle, the length of side is 296mm 275mm, four ends of flange 11 are equipped with four threaded connection holes 111, sleeve pipe 10 inboard middle part is equipped with the through-hole 14 that holds generating line copper bar 30 and pass through, the one end of through-hole 14 is equipped with mounting panel 15, there is a mounting hole 151 with the big or small looks adaptation of generating line copper bar 30 in the mounting panel 15, both ends are excessive to the 14 shrink of middle through-hole about sleeve pipe 10, can strengthen sleeve pipe.

Furthermore, the outsides of the sleeves 10 at the left side and the right side of the flange 11 are provided with the umbrella skirts 16, and the umbrella skirts 16 can increase the outer surface area of the sleeves 10, so that the distance between the charged part and the ground is increased, the puncture is prevented, and the linear length is not increased too much.

The grading ring 20 is sleeved between the inner side of the sleeve 10 and the busbar bar 30, a lead 21 is arranged on the inner side of the grading ring 20, and the lead 21 is used for connecting the busbar bar 30. Specifically, the grading ring 20 is a pipe shape, the section shape of the grading ring 20 is similar to that of the busbar 30, two ends of a galvanized metal sieve plate with the width of 110mm and the thickness of 0.5mm are adopted for flanging and pressing, then, the sieve plate bent ring is welded to form an 85 x 155 x 110mm elliptic cylindrical ring network, two 4mm copper wires are symmetrically welded on the inner wall of the grading ring 20 to serve as voltage access points and are fixed by a device, and the section height of the manufactured grading ring 20 is 155mm, and the section width is 85 mm. The grading ring 20 is pressed by the folded edge of the galvanized metal sieve plate, so that the gap between the sleeve 10 and the mother limiting exhaust pipe can be effectively covered, the voltage between the sleeve 10 and the mother limiting exhaust pipe is stable and uniform, the sleeve 10 is prevented from being damaged by concentrated discharge, the surface of the grading ring 20 is galvanized, the grading ring 20 can be prevented from contacting any corrosive solution, and the grading ring 20 is protected from corrosion. In the general atmosphere, a very thin and dense zinc oxide layer surface is formed on the surface of the zinc layer, which plays a certain role in protecting the grading ring 20 and is beneficial to prolonging the service life of the grading ring 20.

Further, bore on the generating line row and be furnished with corresponding screw hole (diameter 6mm), then adopt M6X 20 bolt 31 to connect on generating line copper bar 30 in the screw hole for installation equalizer ring 20 lead wire 21, equalizer ring 20 lead wire 21 one end be equipped with the generating line copper bar 30 on the nut of bolt 31 looks adaptation, connect through the cooperation of bolt 31 nut and can make things convenient for equalizer ring 20 to install and dismantle, be convenient for the maintenance and the change in later stage. Furthermore, the glass cement is used for coating the joint after connection, so that the situation that water enters to cause rusting of the bolt 31 can be avoided, the connection can be stable, and the connection looseness is prevented.

When the equalizing ring 20 structure of the insulating sleeve 10 provided by the above embodiment is installed, the busbar 30 and the busbar 10 need to be detached, corresponding position marks are made, then the corresponding installation holes 151M6 are drilled on the busbar, then the busbar 10 is installed in situ, and the low-voltage shielding end at the outer end of the sleeve 10 is reliably grounded. M6 × 20 bolts 31 are used to mount the strap 20 leads 21 on the 80 × 10 busbar 30. The bus is installed in the sleeve 10, the grading ring 20 is sleeved in the sleeve to fix the lead 21 on the copper bar, and after the bus is installed, the universal meter is used for detecting whether the lead 21 is installed reliably or not and whether the lead is well lapped with the bus copper bar 30 or not. And after the installation is finished, the original installation point is coated by glass cement, and finally the three-phase bus copper bar 30 is respectively connected with the front cabinet bus and powered on for use. Increase an equalizer ring 20 between busbar 30 and insulation support 10, voltage effective evenly distributed on high-voltage busbar 30 is in insulation support 10 to make the voltage of generating line and the electric field of ground shield cover become even, the air between busbar 30 and insulation support 10 is "strideed across", stabilizes the power supply and distribution system, reinforcing insulation support 10 long service life, the security and the reliability of improvement power distribution system operation reduce the company's loss.

In some embodiments, the size of the grading ring 20 depends on the size of the casing 10, and the casing 10 and the grading ring 20 with corresponding shapes need to be adapted according to the shape of the busbar 30.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.

Claims

1. The utility model provides an insulation support equalizer ring structure which characterized in that: the device comprises a sleeve and a grading ring;

2. The bushing grading ring structure of claim 1, wherein: the grading ring is a pipe, and the cross section of the grading ring is similar to that of the busbar.

3. An insulation sleeve grading ring structure according to claim 2, characterized in that: and sieve holes are distributed on the side surface of the grading ring.

4. An insulation sleeve grading ring structure according to claim 3, characterized in that: the grading ring is formed by pressing two folded edges of two ends of the metal sieve plate.

5. The bushing grading ring structure according to claim 4, wherein: and galvanizing the surface of the grading ring.

6. The bushing grading ring structure of claim 1, wherein: and a connecting nut is arranged on the lead of the grading ring, and the busbar copper bar is provided with a connecting bolt for mounting the grading ring lead.

7. The bushing grading ring structure of claim 1, wherein: and glass cement is coated between the lead of the grading ring and the bus copper bar.

8. The bushing grading ring structure of claim 1, wherein: an umbrella skirt is arranged on the outer side of the sleeve.