CN113381330A - Electric shock prevention device for maintenance of middle handcart type switch cabinet circuit breaker compartment - Google Patents
Electric shock prevention device for maintenance of middle handcart type switch cabinet circuit breaker compartment Download PDFInfo
- Publication number
- CN113381330A CN113381330A CN202110509584.5A CN202110509584A CN113381330A CN 113381330 A CN113381330 A CN 113381330A CN 202110509584 A CN202110509584 A CN 202110509584A CN 113381330 A CN113381330 A CN 113381330A
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- China
- Prior art keywords
- insulating
- circuit breaker
- switch cabinet
- electric shock
- safety baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002265 prevention Effects 0.000 title claims abstract description 11
- 238000012423 maintenance Methods 0.000 title claims description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 21
- 229910052802 copper Inorganic materials 0.000 claims description 21
- 239000010949 copper Substances 0.000 claims description 21
- 238000011282 treatment Methods 0.000 claims description 8
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000004519 manufacturing process 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
- 239000010705 motor oil Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/14—Shutters or guards for preventing access to contacts
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses an electric shock prevention device for overhauling a compartment of a circuit breaker of a middle handcart type switch cabinet, which is placed in a middle switch cabinet and used for shielding a valve mechanism when the valve mechanism is in an open state. In the using process of the invention, enough safety distance can be kept between the maintainer and the electrified body, the safety of the maintainer in the overhauling process is ensured, the safety and the reliability of the overhauling work are improved, and the overhauling time is shortened.
Description
Technical Field
The invention belongs to the technical field of electric power engineering, and particularly relates to a circuit breaker overhauling device for a centrally installed switchgear.
Background
The switch cabinet is a main component of a distribution network. The 10kV switchyard and 10kV low-voltage side equipment in the transformer substation mostly adopt a middle handcart type switch cabinet. The high-voltage centrally installed switchgear switch is a full-scale armored movable alternating-current metal-enclosed switchgear, occupies a small area, is convenient to install and use, and is widely applied to a power system. With the rapid development of national economy, the number of 10kV switch stations is synchronously and rapidly increased, and the using amount of switch cabinet devices in the switch stations is steadily increased.
However, the central switch cabinet also has disadvantages, and since the equipment manufacturer does not consider the maintenance, defect elimination and maintenance requirements of the maintenance unit when the internal fault of the circuit breaker cabinet is processed in the design and manufacturing source links, when the maintenance staff pulls out the handcart switch, the staff has great personal safety risks in the maintenance work without power cut on the bus side of the switch cabinet because the valve mechanism of the circuit breaker cabinet has no locking function.
When a handcart type circuit breaker cabinet static contact baffle operates in practice, the action principle is as follows: when the circuit breaker is pushed into the handcart chamber, the roller is pressed, the roller is stressed, the baffle is lifted up through the connecting rod, and then the moving contact enters the static contact chamber, so that the circuit breaker is in a working position. When the circuit breaker is pulled out of the handcart room, the roller is not stressed, and the baffle plate is restored to the original position. Generally, when an operation and maintenance maintainer performs maintenance and repair operation on an indoor handcart type circuit breaker cabinet, due to reasons such as power grid risks and customer power supply, buses of the circuit breaker cabinet run in an electrified mode, namely, fixed contacts on the sides of the buses of the circuit breaker cabinet are in an electrified state. The operation and maintenance personnel can manually open the baffle at the bus side (line side) in the operation process, so that personal casualty accidents are easily caused, and the operation risk is huge.
Due to working reasons of the car type circuit breaker cabinet, after the valve mechanism is opened by manpower, operation and maintenance staff must keep an opening state for a long time by depending on the manpower, only can carry out simple visual inspection and appearance inspection, and cannot carry out normal and standard inspection, maintenance and fault treatment, and the safety distance between a charged body behind the valve and a human body cannot be effectively guaranteed.
Therefore, based on the objective current situation of the indoor handcart type circuit breaker, the practical operation, maintenance and overhaul conditions are combined, so that the equipment can safely and normatively carry out the related work of daily inspection, maintenance, overhaul, phasing and fault treatment, and the research work of the compartment safety baffle device of the circuit breaker of the centrally installed switchgear is carried out.
Disclosure of Invention
Aiming at the problems that the existing related cabinet structure does not consider the fault and charged state of elements in the cabinet to carry out maintenance treatment, and cannot solve the temporary defects, fault maintenance and maintenance inspection treatment work in the running state of equipment in a high-voltage middle-mounted switch cabinet box, the invention aims to solve the technical problem of providing the compartment maintenance and electric shock prevention device for the circuit breaker of the middle-mounted handcart type switch cabinet, and solving the problems and damages of discharge, mistaken touch of charged equipment and the like which may occur in the middle-mounted switch cabinet maintenance, fault treatment and charged test.
In order to solve the technical problems, the invention adopts the following technical scheme: put handcart-type cubical switchboard circuit breaker compartment and overhaul protection against electric shock device, place in the built-in cubical switchboard of well, under valve mechanism open mode for shelter from valve mechanism, including insulating safety shield, ground copper bar, insulating handle, support bracket, the ground copper bar sets up in insulating safety shield's preceding and connect earth conductor, insulating handle sets up in insulating safety shield's preceding, grips when being used for getting to put the device, support bracket installs in insulating safety shield's bottom for support at the built-in cubical switchboard diapire of well, make insulating safety shield keep upright state, insulating safety shield adopts insulating cushion to make, insulating handle is the bakelite material, and the surface is moulded and is spouted the processing.
Preferably, the insulating handle and the supporting bracket are fixed on the insulating safety baffle by adopting fixing screws and simultaneously press and fix the grounding copper bar.
Preferably, the two grounding copper bars are arranged and are L-shaped, the transverse side edges of the two grounding copper bars are parallel up and down, the free end of the vertical side edge is provided with a connecting sheet, an interval space is arranged in front of the connecting sheet and the insulating safety baffle plate, and the connecting sheets of the two grounding copper bars are stacked and fixedly connected through a connecting bolt.
Preferably, the ground lead is fixed to the connection bolt.
Preferably, the support bracket is a foldable tripod, and the foldable tripod comprises a side edge fixed in front of the insulating safety baffle, a bottom edge hinged with the bottom of the side edge and capable of being folded upwards and stored into a whole with the side edge, and a connecting rod with one end hinged with the side edge and the other end hinged with a waist-shaped groove on the bottom edge through a pin shaft.
According to the technical scheme, the compartment maintenance electric shock prevention device of the middle handcart type switch cabinet circuit breaker is placed in a middle switch cabinet, when the valve mechanism is in an open state, the insulating safety baffle is shielded in front of the valve mechanism, the insulating handle is used for holding when the device is taken and placed, and the supporting bracket is used for supporting the bottom wall of the middle switch cabinet to enable the insulating safety baffle to be in an upright state.
Therefore, the following beneficial effects are achieved: in the use, can keep sufficient safe distance between maintainer and the electrified body, guarantee the safety of maintainer among the maintenance process, promote the security and the reliability of maintenance work, shortened the maintenance time.
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 front schematic view of an inspection electric shock prevention device for a built-in handcart type switch cabinet breaker compartment in the invention;
FIG. 2 is a side view of an inspection and protection device for a compartment of a built-in handcart type switch cabinet circuit breaker according to the present invention;
in the figure: 1-insulating safety baffle, 2-grounding copper bar, 21-connecting piece, 22-connecting bolt, 23-grounding wire, 3-insulating handle, 4-supporting bracket, 41-bottom edge, 42-side edge and 43-connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
Noun interpretation
A circuit breaker compartment: the middle part of the centrally-mounted cabinet is provided with rails on two sides of the compartment, and the arch handcart moves from a test position to a working position in the cabinet. In the process, the valve on the upper contact box and the lower contact box is linked with the handcart and is automatically opened; when the handcart moves in the reverse direction, the valve is automatically closed until the handcart moves back to the test position to completely cover the static contact box.
A valve mechanism: the valve mechanism is generally in the middle of the switch cabinet and is at the same height as the circuit breaker trolley. When in a test position, the valve mechanism is closed, so that the primary charged body is thoroughly isolated, and safety guarantee is provided for operators and equipment. When the device is in a working position, the valve mechanism is opened, and at the moment, the circuit breaker handcart can divide and operate the power transmission of the device.
In order to complete the maintenance work of the central switch cabinet, such as the falling treatment of a safety baffle between contacts, the maintenance work of a valve mechanism, the cleaning and lubricating oil adding work in the cabinet, and the like, the safety distance between an operation tool and live equipment is ensured, the personal injury is prevented, the maintenance effectiveness and reliability of cabinet body elements are improved, a set of special tool is necessarily developed, and various problems and damages such as discharge, mistaken touch of the live equipment and the like which may occur in the maintenance, fault treatment and live test of the central switch cabinet are solved.
Therefore, in order to minimize the safety risk of a working site, the safety of maintenance workers during maintenance of the centrally-mounted switch cabinet is guaranteed, the safety and reliability of maintenance work are improved, electric shock by mistake is prevented, and an electric shock prevention device for inhibiting maintenance of the middle-mounted handcart type switch cabinet circuit breaker compartment is designed.
Referring to fig. 1 and 2, put handcart-type cubical switchboard circuit breaker compartment and overhaul protection against electric shock device in, place in the built-in cubical switchboard of putting, under valve mechanism open mode for shelter from in valve mechanism the place ahead, it includes insulating safety shield 1, ground copper bar 2, insulating handle 3, support bracket 4, ground copper bar 2 sets up in insulating safety shield's preceding and connect earth conductor 23, insulating handle 3 sets up in insulating safety shield's preceding for grip when getting and putting the device, support bracket 4 installs in insulating safety shield's bottom, is used for supporting the diapire at the built-in cubical switchboard of putting, makes insulating safety shield keep upright state.
In this embodiment, the insulating handle 3 and the supporting bracket 4 are fixed on the insulating safety baffle 1 by fixing screws and simultaneously compress and fix the ground copper bar 2, so that the ground copper bar 2 does not need to be fastened independently, the installation is convenient, and the cost is saved.
Specifically, ground copper bar 2 is equipped with two, and two ground copper bars all are the L shape, and the horizontal side of two ground copper bars is parallel from top to bottom, and the free end of vertical side is equipped with connection piece 21, and the connection piece is equipped with the interval space with insulating safety shield's preceding, and the connection piece of two ground copper bars is range upon range of and passes through connecting bolt 22 fixed connection. Meanwhile, the ground lead 23 is fixed to the connection bolt.
Wherein, the insulating safety baffle 1 is made of an insulating rubber mat. The insulating material has good physical and mechanical properties, excellent insulating property, electric arc resistance and tracking resistance, and can work in an environment with high dielectric coefficient requirement in dry air at-35 to +100 ℃. The voltage class of the insulating rubber pad adopted by the embodiment is 10kV, and the insulating requirement of a 10kV switch station can be met. The insulated handle 3 is made of bakelite, and the surface of the insulated handle is subjected to plastic spraying treatment, so that the insulated handle has good solvent resistance, engine oil resistance and grease resistance.
In one embodiment, the support bracket 4 is a foldable tripod including a side 42 fixed in front of the insulating safety barrier, a bottom 41 hinged to the bottom of the side and foldable upward to be received in the side, and a connecting rod 43 hinged to the side at one end and hinged to a waist-shaped groove on the bottom at the other end. Because when not using, support bracket 4 can be folded, consequently can avoid taking up great space, in addition, can carry out effectual support in insulating safety shield upright state after the expansion.
The electric shock preventing device for overhauling the compartment of the middle handcart type switch cabinet circuit breaker is a safe, universal and convenient electric shock preventing safety baffle device. The field application shows that the operation is flexible, the operation is completely convenient and fast, the insulation is reliable, the safety of the maintenance work is greatly improved, the labor intensity of workers is reduced, the working efficiency is improved, and the method has higher popularization and application values.
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. Put handcart-type cubical switchboard circuit breaker compartment and overhaul protection against electric shock device, place in the built-in cubical switchboard of putting in, under the valve mechanism state of opening for shelter from valve mechanism, its characterized in that: comprises an insulating safety baffle, a grounding copper bar, an insulating handle and a supporting bracket, wherein the grounding copper bar is arranged in front of the insulating safety baffle and is connected with a grounding lead, the insulating handle is arranged in front of the insulating safety baffle and is used for holding when the device is taken and placed,
the supporting bracket is arranged at the bottom of the insulating safety baffle and is used for supporting the bottom wall of the central switch cabinet to keep the insulating safety baffle in an upright state; the insulating safety baffle is made of an insulating rubber mat, the insulating handle is made of bakelite, and the surface of the insulating handle is subjected to plastic spraying treatment.
2. The middle handcart type switch cabinet circuit breaker compartment maintenance electric shock prevention device according to claim 1, characterized in that: the insulating handle and the supporting bracket are fixed on the insulating safety baffle by adopting fixing screws and simultaneously press and fix the grounding copper bar.
3. The middle handcart type switch cabinet circuit breaker compartment maintenance electric shock prevention device according to claim 2, characterized in that: the two grounding copper bars are arranged and are L-shaped, the transverse side edges of the two grounding copper bars are parallel up and down, the free ends of the vertical side edges are provided with connecting pieces, the connecting pieces and the front surface of the insulating safety baffle are provided with spacing spaces, and the connecting pieces of the two grounding copper bars are stacked and fixedly connected through connecting bolts.
4. The middle handcart type switch cabinet circuit breaker compartment overhauling electric shock prevention device according to claim 3, wherein: the grounding lead is fixed on the connecting bolt.
5. The middle handcart type switch cabinet circuit breaker compartment maintenance electric shock prevention device according to claim 1, characterized in that: the support bracket is a foldable tripod, the foldable tripod comprises a side edge fixed in front of the insulating safety baffle, a bottom edge hinged with the bottom of the side edge and capable of being folded upwards and stored into a whole with the side edge, and a connecting rod, one end of the connecting rod is hinged with the side edge, and the other end of the connecting rod is hinged with a waist-shaped groove in the bottom edge through a pin shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509584.5A CN113381330B (en) | 2021-05-11 | Electric shock preventing device for overhauling compartment of breaker of centrally-mounted handcart type switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509584.5A CN113381330B (en) | 2021-05-11 | Electric shock preventing device for overhauling compartment of breaker of centrally-mounted handcart type switch cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113381330A true CN113381330A (en) | 2021-09-10 |
| CN113381330B CN113381330B (en) | 2024-06-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708264A (en) * | 2021-09-30 | 2021-11-26 | 广东电网有限责任公司东莞供电局 | Foldable insulating baffle device for high-voltage switch cabinet |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728780A (en) * | 2009-12-21 | 2010-06-09 | 安徽鑫龙电器股份有限公司 | Grounding device of metal-clad moveable high-voltage switchgear |
| CN201601401U (en) * | 2009-12-11 | 2010-10-06 | 广东南粤电气有限公司 | Central cabinet valve mechanism inspection handcart |
| CN201893515U (en) * | 2010-11-19 | 2011-07-06 | 广州亿盛电气科技有限公司 | Grounding handcart of centrally-mounted switch cabinet |
| CN204118549U (en) * | 2014-11-18 | 2015-01-21 | 兴安供电公司 | A kind of middle-placed switch cabinet maintenance protection against electric shock handcart |
| US20150262767A1 (en) * | 2014-03-14 | 2015-09-17 | Eaton Corporation | Cradle assist devices and related kits and methods |
| JP2017208913A (en) * | 2016-05-18 | 2017-11-24 | 三菱電機株式会社 | Degradation monitoring device for gas-insulation switchgear |
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201601401U (en) * | 2009-12-11 | 2010-10-06 | 广东南粤电气有限公司 | Central cabinet valve mechanism inspection handcart |
| CN101728780A (en) * | 2009-12-21 | 2010-06-09 | 安徽鑫龙电器股份有限公司 | Grounding device of metal-clad moveable high-voltage switchgear |
| CN201893515U (en) * | 2010-11-19 | 2011-07-06 | 广州亿盛电气科技有限公司 | Grounding handcart of centrally-mounted switch cabinet |
| US20150262767A1 (en) * | 2014-03-14 | 2015-09-17 | Eaton Corporation | Cradle assist devices and related kits and methods |
| CN204118549U (en) * | 2014-11-18 | 2015-01-21 | 兴安供电公司 | A kind of middle-placed switch cabinet maintenance protection against electric shock handcart |
| JP2017208913A (en) * | 2016-05-18 | 2017-11-24 | 三菱電機株式会社 | Degradation monitoring device for gas-insulation switchgear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113708264A (en) * | 2021-09-30 | 2021-11-26 | 广东电网有限责任公司东莞供电局 | Foldable insulating baffle device for high-voltage switch cabinet |
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