CN214226637U - Integral insulators for high voltage switchgear - Google Patents
Integral insulators for high voltage switchgear Download PDFInfo
- Publication number
- CN214226637U CN214226637U CN202120121395.6U CN202120121395U CN214226637U CN 214226637 U CN214226637 U CN 214226637U CN 202120121395 U CN202120121395 U CN 202120121395U CN 214226637 U CN214226637 U CN 214226637U
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- Prior art keywords
- insulator
- main body
- shield
- insulation
- insulating
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- Expired - Fee Related
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- 239000012212 insulator Substances 0.000 title claims abstract description 57
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 239000004593 Epoxy Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 7
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000002452 interceptive effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Gas-Insulated Switchgears (AREA)
Abstract
本实用新型涉及一种用于高压开关柜的一体式绝缘子，包括一体成型的绝缘子主体和绝缘护罩。绝缘护罩为下端开口的U型，包括顶板、左侧板与右侧板。绝缘子主体的下端贯穿设置在顶板上，左侧板与右侧板分别位于绝缘子主体的左右两侧。本实用新型通过设置绝缘护罩，解决了接地开关静触头及电缆搭接处区域取消绝缘隔板后，该区域由于尖角(如安装螺栓)较多导致雷电冲击试验电压下存在放电隐患的问题，同时也在不干涉产品配装的基础上增大了该区域裸露电极之间的绝缘净距，提高了高压开关柜的电气安全性；通过在绝缘护罩上增设加强筋，提高了绝缘护罩机械强度的可靠性。本实用新型具有结构合理、绝缘性能强、机械强度高等特点。
The utility model relates to an integrated insulator for a high-voltage switch cabinet, which comprises an integrated insulator body and an insulating shield. The insulating shield is U-shaped with an open lower end, including a top plate, a left plate and a right plate. The lower end of the insulator main body is disposed through the top plate, and the left and right plates are respectively located on the left and right sides of the insulator main body. By arranging an insulating shield, the utility model solves the problem of potential electric discharge under the lightning impulse test voltage due to the large number of sharp corners (such as mounting bolts) in this area after the insulating partition is removed in the area where the static contact of the grounding switch and the cable overlap. At the same time, on the basis of not interfering with the product assembly, the insulation clearance between the exposed electrodes in this area is increased, which improves the electrical safety of the high-voltage switchgear; by adding reinforcing ribs on the insulation shield, the insulation is improved. The reliability of the mechanical strength of the shield. The utility model has the characteristics of reasonable structure, strong insulation performance and high mechanical strength.
Description
Technical Field
The utility model relates to a high tension switchgear technical field, concretely relates to integral type insulator for high tension switchgear.
Background
With the continuous development of power systems, the application number of high-voltage switch cabinets is increasing day by day, and the safety of the high-voltage switch cabinets directly influences the safe and stable operation of the power systems. From field operation experience, the insulation flashover percentage is the highest among many fault types of the high-voltage switch cabinet, and particularly on a 40.5kV switch cabinet, the insulation fault percentage is 82.6%.
At present, insulation problems such as insufficient insulation distance and the like are increasingly prominent in the existing 40.5kV switch cabinet due to pursuit of miniaturization of the switch cabinet volume, in order to improve the insulation level of the switch cabinet, a large number of insulation sheaths and insulation partition plates are used in the cabinet to make up for the problem of insufficient insulation clear distance, but most insulation sheath materials are not subjected to examination and verification of an aging test and a condensation test, and the insulation sheaths do not effectively play a role; and because the insulating partition board leads to the dielectric constant grow after being moistened and fouled, the insulating property is sharply reduced, not only can the insulation not be enhanced, but also the insulation clear distance is further reduced, and finally, the insulation fault is caused. At present, most manufacturers adopt insulating partition plates in the lap joint areas of a static contact and a cable of a grounding switch in a high-voltage switch cabinet, and after the insulating partition plates are cancelled, the areas have discharge hidden troubles under the voltage of a lightning impulse test because sharp corners (such as mounting bolts) are more; and due to the cancellation of the insulating partition plate in the area, the insulating clear distance in the area is insufficient, the insulating margin is insufficient, and therefore discharge is caused.
Therefore, the area of the lap joint of the grounding switch insulator and the cable needs to be redesigned so as to solve the problems of potential discharge hazard and the like caused by the cancellation of the insulating partition plate.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an integral type insulator for high tension switchgear, this insulator can solve exist among the prior art not enough, have characteristics such as rational in infrastructure, insulating properties is strong, mechanical strength height.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the integrated insulator for the high-voltage switch cabinet comprises an insulator main body and an insulating shield which are integrally formed; the insulation shield is U-shaped with an opening at the lower end, and comprises a top plate, and a left side plate and a right side plate which are symmetrically arranged below the left end and the right end of the top plate; the lower end of the insulator main body is arranged on the top plate in a penetrating mode, and the left side plate and the right side plate are respectively located on the left side and the right side of the insulator main body; and the front end and the rear end of the top plate are respectively provided with a notch.
Further, the top of the insulator main body is provided with an insulator mounting and fixing insert, and the bottom of the insulator main body is provided with a cable mounting and fixing insert.
Furthermore, a plurality of reinforcing ribs are respectively arranged on the left side plate and the right side plate.
Furthermore, the insulator main body and the insulating shield are integrally cast by epoxy.
Further, the insulator main body is cylindrical.
According to the technical scheme, the utility model discloses a set up the insulating guard shield, make earthing switch static contact and the cable erection fixed inserts of insulator main part bottom be located between the left side board and the right side board of insulating guard shield, solved earthing switch static contact and cable overlap joint region cancel insulating barrier after, this region because closed angle (like the construction bolt) more leads to the problem that has the hidden danger of discharging under the lightning impulse test voltage, also increased the insulating clear distance between the exposed electrode in this region on the basis that does not interfere the product and assemble simultaneously, improved high tension switchgear's electrical safety; the reliability of the mechanical strength of the insulation shield is improved by additionally arranging the reinforcing ribs on the insulation shield; through adopting whole epoxy pouring with insulator main part and insulating guard shield, eliminated the influence of suspension potential, and guaranteed the standardization of insulating guard shield both sides assembly. Integral type insulator can solve exist among the prior art not enough, have characteristics such as rational in infrastructure, insulating properties is strong, mechanical strength height.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a longitudinal sectional view of the present invention;
fig. 3 is a front view of the present invention.
Wherein:
1. insulator main part, 2, outer rampart, 3, insulator installation fixed inserts, 4, cable installation fixed inserts, 5, insulating guard shield, 51, left side board, 52, right side board, 53, roof, 54, breach, 6, strengthening rib.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
the integral insulator for the high-voltage switch cabinet as shown in fig. 1-3 comprises an insulator main body 1 and an insulating shield 5 which are integrally formed. Insulator main part 1 and insulating guard 2 adopt whole epoxy casting, can eliminate the suspension electric potential, and guarantee the standardization of insulator both sides insulating guard assembly. The integrated insulator is suitable for a 40.5kV high-voltage switch cabinet.
The insulator main body 1 is cylindrical. The number of the outer annular wall sheds 2 is a plurality, and the sheds are regularly distributed along the periphery of the middle section of the cylindrical insulator main body 1. The outer ring wall umbrella skirt 2 increases the surface creepage distance of the insulator main body 1. The top of the insulator main body 1 is provided with an insulator mounting and fixing insert 3, and the insulator mounting and fixing insert 3 is used for fixing the insulator main body 1 on a valve of a cabinet body of the high-voltage switch cabinet. The bottom of the insulator main body 1 is provided with a cable installation fixing insert 4, and the cable installation fixing insert 4 is used for fixing a cable on the insulator main body 1, so that the stability of the cable is ensured.
The insulating shield 5 is U-shaped with an open lower end, and includes a top plate 53, and a left side plate 51 and a right side plate 52 symmetrically disposed below the left and right ends of the top plate 53. The lower end of the insulator body 1 is arranged on the top plate 53 in a penetrating manner, and the left side plate 51 and the right side plate 52 are respectively positioned on the left side and the right side of the insulator body 1. The relative position of the insulating shield 5 and the insulator main body 1 can be adjusted at any time and produced according to the specific position conditions of the lap joint area of the static contact of the grounding switch and the cable in the high-voltage switch cabinet, so that the insulating property of other positions in the integrated insulator assembly area is not influenced, and the integrated insulator assembly area has higher flexibility and applicability. The insulating shield 5 replaces an insulating partition plate in the original design, solves the problem that the potential discharge hazard exists in the area due to more sharp corners (such as mounting bolts) under the voltage of a lightning impulse test after the insulating partition plate is cancelled in the area of the lap joint of the static contact and the cable of the grounding switch, increases the insulating clear distance between exposed electrodes in the area on the basis of not interfering the assembly of products, and improves the electrical safety of the high-voltage switch cabinet.
A notch 54 is respectively formed at the front end and the rear end of the top plate 53, so that the installation of a static contact of the grounding switch and the fixation of a cable are facilitated.
The left side plate 51 and the right side plate 52 are respectively provided with a plurality of reinforcing ribs 6, and the arrangement of the reinforcing ribs 6 ensures the reliability of the mechanical strength of the insulating shield.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (6)
1. A integral type insulator for high tension switchgear, its characterized in that: comprises an insulator main body and an insulating shield which are integrally formed; the insulation shield is U-shaped with an opening at the lower end, and comprises a top plate, and a left side plate and a right side plate which are symmetrically arranged below the left end and the right end of the top plate; the lower extreme of insulator main part runs through the setting on the roof, and left side board and right side board are located the left and right sides of insulator main part respectively.
2. The integral insulator for the high-voltage switch cabinet as claimed in claim 1, wherein: the top of the insulator main body is provided with an insulator mounting and fixing insert, and the bottom of the insulator main body is provided with a cable mounting and fixing insert.
3. The integral insulator for the high-voltage switch cabinet as claimed in claim 1, wherein: and the left side plate and the right side plate are respectively provided with a plurality of reinforcing ribs.
4. The integral insulator for the high-voltage switch cabinet as claimed in claim 1, wherein: the insulator main body and the insulating shield are integrally cast by epoxy.
5. The integral insulator for the high-voltage switch cabinet as claimed in claim 1, wherein: and the front end and the rear end of the top plate are respectively provided with a notch.
6. The integral insulator for the high-voltage switch cabinet as claimed in claim 1, wherein: the insulator main body is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120121395.6U CN214226637U (en) | 2021-01-15 | 2021-01-15 | Integral insulators for high voltage switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120121395.6U CN214226637U (en) | 2021-01-15 | 2021-01-15 | Integral insulators for high voltage switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214226637U true CN214226637U (en) | 2021-09-17 |
Family
ID=77689918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120121395.6U Expired - Fee Related CN214226637U (en) | 2021-01-15 | 2021-01-15 | Integral insulators for high voltage switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214226637U (en) |
-
2021
- 2021-01-15 CN CN202120121395.6U patent/CN214226637U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210917 |