CN109301739B - Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box - Google Patents
Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box Download PDFInfo
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- CN109301739B CN109301739B CN201811353099.8A CN201811353099A CN109301739B CN 109301739 B CN109301739 B CN 109301739B CN 201811353099 A CN201811353099 A CN 201811353099A CN 109301739 B CN109301739 B CN 109301739B
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- Prior art keywords
- copper bar
- voltage cable
- circuit breaker
- main copper
- low
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- 238000002955 isolation Methods 0.000 title claims abstract description 39
- 238000009413 insulation Methods 0.000 title claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052802 copper Inorganic materials 0.000 claims abstract description 53
- 239000010949 copper Substances 0.000 claims abstract description 53
- 238000005192 partition Methods 0.000 claims abstract description 20
- 238000005452 bending Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses an insulation isolation device for replacing a circuit breaker in a low-voltage cable branch box in a charged mode, wherein a main copper bar and a circuit breaker are arranged in the low-voltage cable branch box, the main copper bar is horizontally arranged, a plurality of circuit breakers are arranged below the main copper bar side by side, three connecting copper bars are arranged between the circuit breakers and the main copper bar side by side, the insulation isolation device comprises an insulation isolation cover, the insulation isolation cover comprises a horizontal support plate, partition plates connected to the rear side of the horizontal support plate side by side and a main copper bar partition plate vertically connected above the horizontal support plate, the main copper bar partition plate is shielded in front of the main copper bar, and the partition plates are inserted between two adjacent connecting copper. The invention ensures that the breaker is safely replaced in a live state, and saves time and labor.
Description
Technical Field
The invention belongs to the technical field of electric power overhaul, and particularly relates to an insulation isolation device for a circuit breaker in a live-line replacement low-voltage cable branch box.
Background
The breaker in the low-voltage cable branch box is subjected to multiple short-circuit actions and overload actions, the maximum current breaking capacity of the breaker is linearly reduced, and the breaker needs to be replaced and processed in time for effectively improving the power supply reliability.
In recent years, low-voltage cable transformation work is continuously promoted, and low-voltage cable branch boxes are widely applied. The equipment operation necessarily has a maintenance process. With the examination requirements on repeated power failure and the power consumption requirements of users, the problem of large power failure area in the process of replacing the circuit breaker is effectively solved, and the circuit breaker in the low-voltage cable branch box needs to be replaced in a live-line mode under the background.
As shown in fig. 1, a disconnecting switch 11, a main copper bar 12 and circuit breakers 13 are arranged in the low-voltage cable branch box 1, wherein the main copper bar 12 is horizontally arranged, a plurality of circuit breakers 13 are arranged below the main copper bar 12 side by side, and three connecting copper bars 14 are arranged between the circuit breakers 13 and the main copper bar 12. When the circuit breakers are replaced in a charged mode, the space between the circuit breakers is small, the main copper bar is exposed, and the circuit breakers easily touch nearby connecting copper bars to cause electric shock accidents.
Therefore, the requirements for replacing the circuit breaker in a live state are to be carried out under safety measures such as insulation and isolation.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the insulation isolation device for the circuit breaker in the live replacement low-voltage cable branch box, so that the safe live replacement of the circuit breaker is ensured.
In order to solve the technical problems, the invention adopts the following technical scheme: the circuit breaker insulating and isolating device in the low-voltage cable branch box is changed in an electrified mode, a main copper bar and a circuit breaker are arranged in the low-voltage cable branch box, the main copper bar is horizontally arranged, the circuit breakers are arranged below the main copper bar side by side, three connecting copper bars are arranged between the circuit breaker and the main copper bar side by side, the insulating and isolating device comprises an insulating and isolating cover, the insulating and isolating cover comprises a horizontal support plate, a partition plate and a main copper bar partition plate, the partition plate is connected to the rear side of the horizontal support plate side by side, the main copper bar partition plate is perpendicularly connected to the upper portion of the horizontal support plate, the main copper bar partition plate.
Preferably, two sides of the separation plate are provided with side wings.
Preferably, the insulating isolation cover is fixed with the floating support, the floating support is connected with the fixing frame in a horizontal floating mode, a spring which elastically drives the insulating isolation cover to move towards the main copper bar and the breaker is arranged between the floating support and the fixing frame, and the fixing frame is fixed with the low-voltage cable branch box.
Preferably, the fixing frame is provided with a guide groove, the floating support is connected with a guide roller, and the guide roller is slidably arranged in the guide groove.
Preferably, the floating support is provided with a push plate fixedly connected with the upper part of the partition plate, the push plate is connected with a support rod, the fixing frame is provided with a vertical back bending part, the back bending part is provided with a support hole, the support hole is in sliding fit with the support rod, and the spring sleeve is arranged at the support rod and two ends of the support rod and is respectively elastically abutted to the push plate and the back bending part.
Preferably, the push plate and the main copper bar isolation plate are correspondingly provided with fixing holes for the insulation screws to pass through.
Preferably, the left side and the right side of the fixing frame are provided with side bending parts, and the side bending parts are fixed with the side wall of the low-voltage cable branch box.
By adopting the technical scheme, the division plates are inserted between two adjacent connection copper bars to isolate the connection copper bars, and the main copper bars are shielded by the main copper bar division plates, so that the circuit breaker is safely replaced in a charged manner, and time and labor are saved.
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings.
Drawings
The invention is further described with reference to the accompanying drawings and the detailed description below:
fig. 1 is a partial front view of a low-voltage cable breakout box;
FIG. 2 is a front view of the insulating cage;
FIG. 3 is a top view of the insulating cage;
fig. 4 is an exploded view of the floating bracket and the fixing bracket.
Detailed Description
In the first embodiment, referring to fig. 2 and 3, the breaker insulation isolation device in the low-voltage cable branch box is replaced in an electrified manner, the insulation isolation device comprises an insulation isolation cover, the insulation isolation cover comprises a horizontal support plate 21, partition plates 23 connected to the rear side of the horizontal support plate side by side, and a main copper bar isolation plate 22 vertically connected above the horizontal support plate, the main copper bar isolation plate 22 is shielded in front of a main copper bar, and the partition plates 23 are inserted between two adjacent connecting copper bars. Therefore, adjacent connecting copper bars are isolated through the partition plates 23, and meanwhile, the main copper bars are shielded through the main copper bar isolation plates 22, so that the circuit breaker can be safely and electrically replaced under the safety measures of insulation and isolation, and time and labor are saved.
And side wings are arranged on two sides of the partition plate to increase the width space and effectively isolate adjacent connecting copper bars.
Referring to fig. 4, the insulating isolation cover is fixed to a floating support 32, the floating support 32 is horizontally connected to a fixing frame 31 in a floating manner, a spring 35 for elastically driving the insulating isolation cover to move towards the main copper bar and the breaker is arranged between the floating support and the fixing frame, and the fixing frame is fixed to the low-voltage cable branch box. Therefore, through the drive of the spring 35, the insulating isolation cover and the floating support move towards the main copper bar and the breaker together, the stability of the isolation state is ensured, and the insulating isolation cover is prevented from being separated.
The fixed frame is provided with a guide groove 37, the floating support is connected with a guide roller 34, and the guide roller is arranged in the guide groove in a sliding manner. The floating support 32 is provided with a push plate fixedly connected with the upper part of the partition plate, the push plate is connected with a support rod 33, the fixing frame is provided with a vertical back bending part, the back bending part is provided with a support hole 38, the support hole is in sliding fit with the support rod, and the spring sleeve is arranged at the support rod and two ends of the support rod and respectively elastically abutted against the push plate and the back bending part.
The push plate and the main copper bar isolation plate are correspondingly provided with a first fixing hole 36 and a second fixing hole 24 for the insulation screws to pass through, so that the push plate and the main copper bar isolation plate are fixed through the insulation screws, and the insulation isolation cover and the floating support move together.
In addition, the left side and the right side of the fixing frame are provided with side bending parts, and the side bending parts are fixed with the side wall of the low-voltage cable branch box.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (5)
1. Change circuit breaker insulating isolation device in low-voltage cable feeder pillar with electricity, be equipped with main copper bar and circuit breaker in the low-voltage cable feeder pillar, main copper bar level sets up, and a plurality of circuit breakers set up in main copper bar below side by side, and are equipped with three connection copper bar, its characterized in that side by side between circuit breaker and the main copper bar: the insulating isolation device comprises an insulating isolation hood, the insulating isolation hood comprises a horizontal support plate, a partition plate connected to the rear side of the horizontal support plate side by side and a main copper bar partition plate vertically connected to the top of the horizontal support plate, the main copper bar partition plate is shielded in the front of a main copper bar, the partition plate is inserted between two adjacent connecting copper bars, the two sides of the partition plate are provided with side wings, the insulating isolation hood is fixed to a floating support, the floating support is connected with a fixing frame in a horizontal floating mode, a spring for driving the insulating isolation hood to move towards the main copper bar and a circuit breaker is arranged between the floating support and the fixing frame, and the fixing frame is fixed to a low-voltage cable.
2. The insulation isolation device for the circuit breaker in the live-line replacement low-voltage cable branch box according to claim 1, wherein: the fixing frame is provided with a guide groove, the floating support is connected with a guide roller, and the guide roller is arranged in the guide groove in a sliding manner.
3. The insulation isolation device for the circuit breaker in the live-line replacement low-voltage cable branch box according to claim 1, wherein: the utility model discloses a spring cover, including the division board, the spring cover, the floating support is equipped with the push pedal with division board upper portion fixed connection, the push pedal is connected with the bracing piece, the mount is equipped with the vertical back portion of bending, the back portion of bending is equipped with the supported hole, supported hole and bracing piece sliding fit, the spring cover is established at bracing piece and both ends elasticity butt push pedal and the back portion of bending respectively.
4. The insulation isolation device for the circuit breaker in the live replacement low-voltage cable branch box according to claim 3, wherein: and the push plate and the main copper bar isolation plate are correspondingly provided with fixing holes for the insulation screws to pass through.
5. The insulation isolation device for the circuit breaker in the live-line replacement low-voltage cable branch box according to claim 1, wherein: the left side and the right side of the fixing frame are provided with side bending parts, and the side bending parts are fixed with the side walls of the low-voltage cable branch box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353099.8A CN109301739B (en) | 2018-11-14 | 2018-11-14 | Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353099.8A CN109301739B (en) | 2018-11-14 | 2018-11-14 | Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109301739A CN109301739A (en) | 2019-02-01 |
| CN109301739B true CN109301739B (en) | 2020-03-03 |
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ID=65143102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811353099.8A Active CN109301739B (en) | 2018-11-14 | 2018-11-14 | Insulation isolation device for live replacement of circuit breaker in low-voltage cable branch box |
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| Country | Link |
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| CN (1) | CN109301739B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224348B (en) * | 2019-06-17 | 2020-09-18 | 国网湖北省电力有限公司宜昌供电公司 | Live-line wiring method for isolating live-line part in low-voltage cable branch box |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785945A (en) * | 2016-12-28 | 2017-05-31 | 汉舟四川铜铝复合科技有限公司 | One kind is for busbar channel in cabinet and switch disconnector attachment means |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100107883A (en) * | 2009-03-27 | 2010-10-06 | 주은희 | Cabinet panel |
| CN105811348A (en) * | 2014-04-14 | 2016-07-27 | 湖南国奥电力设备有限公司 | Remote controllable low-voltage cable branch box |
| CN205141617U (en) * | 2015-11-05 | 2016-04-06 | 国网湖南省电力公司带电作业中心 | Cable branch case insulating boot |
| CN206250741U (en) * | 2016-12-15 | 2017-06-13 | 达得利电力设备有限公司 | A kind of cable branch box of glass steel material |
| CN108110701A (en) * | 2018-01-09 | 2018-06-01 | 国网山东省电力公司滨州供电公司 | It is a kind of can the charged pinch of low-voltage cable junction box started to exchange fire |
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2018
- 2018-11-14 CN CN201811353099.8A patent/CN109301739B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785945A (en) * | 2016-12-28 | 2017-05-31 | 汉舟四川铜铝复合科技有限公司 | One kind is for busbar channel in cabinet and switch disconnector attachment means |
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| CN109301739A (en) | 2019-02-01 |
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