CN113381330B - Electric shock preventing device for overhauling compartment of breaker of centrally-mounted handcart type switch cabinet - Google Patents
Electric shock preventing device for overhauling compartment of breaker of centrally-mounted handcart type switch cabinet Download PDFInfo
- Publication number
- CN113381330B CN113381330B CN202110509584.5A CN202110509584A CN113381330B CN 113381330 B CN113381330 B CN 113381330B CN 202110509584 A CN202110509584 A CN 202110509584A CN 113381330 B CN113381330 B CN 113381330B
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- Prior art keywords
- insulating
- overhauling
- switch cabinet
- insulating safety
- centrally
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- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000012423 maintenance Methods 0.000 claims description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 22
- 230000004888 barrier function Effects 0.000 claims description 19
- 230000000703 anti-shock Effects 0.000 claims description 4
- 229920001342 Bakelite® Polymers 0.000 claims description 3
- 239000004637 bakelite Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 210000003734 kidney Anatomy 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000002265 prevention Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 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
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 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
- 239000004033 plastic Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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 a centrally-mounted handcart type switch cabinet breaker compartment overhauling electric shock prevention device which is placed in a centrally-mounted switch cabinet and used for shielding a valve mechanism in an opening state of the valve mechanism. In the use process, the invention can keep enough safety distance between the overhauling personnel and the electrified body, ensure the safety of the overhauling personnel in the overhauling process, improve the safety and reliability of overhauling work and shorten the overhauling time.
Description
Technical Field
The invention belongs to the technical field of power engineering, and particularly relates to a centrally installed switchgear circuit breaker maintenance device.
Background
The switch cabinet is a main component formed by a distribution network. The 10kV switch station 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 totally called armoured removable alternating current metal closed switch equipment, has small occupied area, is convenient to install and use, and is widely applied to power systems. Along with the rapid development of national economy, the number of 10kV switch stations is also rapidly increased synchronously, and the use amount of switch cabinet devices in the switch stations is also steadily increased.
However, the centrally-mounted switch cabinet has the defects that as equipment manufacturers do not consider the maintenance, defect elimination and overhaul requirements of overhaul units when the internal faults of the switch cabinet are processed in the design and manufacturing source links, after an overhaul and maintenance worker pulls out a handcart switch, because a valve mechanism of the switch cabinet has no locking function, the worker has great personal safety risks in the overhaul and maintenance work of carrying out uninterrupted power on the bus side of the switch cabinet, and high-voltage electric shock can be caused.
The fixed contact baffle of the handcart type breaker cabinet has the following action principle when in actual operation: when the circuit breaker is pushed into the handcart room, the roller is pressed, the roller is stressed, the baffle is lifted up through the connecting rod, and then the movable contact enters the static contact room, so that the circuit breaker is in a working position. When the breaker is pulled out of the handcart room, the idler wheel is not stressed, and the baffle plate returns to the original position. In general, when operation and maintenance personnel perform maintenance and repair operations of an indoor handcart type breaker cabinet, the breaker cabinet bus is electrified to operate due to power grid risks, customer power supply and other reasons, namely, a static contact on the side of the breaker cabinet bus is electrified. The bus side (line side) baffle can be manually opened by an operator in the operation process, so that personal casualties are extremely easy to cause, and the operation risk is huge.
The vehicle-mounted circuit breaker cabinet is characterized in that after the valve mechanism is opened by manpower, operation and maintenance personnel must rely on the manpower to keep an opened state for a long time, and only simple visual inspection and appearance inspection work can be performed, normal and standard inspection, maintenance and fault treatment work can not be performed, and the safety distance between an electrified body behind the valve and a human body can not be effectively ensured.
Therefore, based on the objective current situation of the indoor handcart type breaker, the equipment can safely and normally perform daily checking, maintenance, overhaul, phasing and fault handling related work by combining the actual operation and overhaul conditions, and the research work of the safety baffle device of the compartment of the centrally installed switchgear breaker is performed.
Disclosure of Invention
Aiming at the problem that the existing related cabinet structure does not consider the fault electrification state of elements in the cabinet for maintenance and treatment, temporary defects, fault maintenance and inspection treatment work under the running state of equipment in a high-voltage middle-mounted switch cabinet box cannot be solved, the technical problem to be solved by the invention is to provide a middle-mounted handcart type switch cabinet breaker compartment maintenance and electric shock prevention device, which solves various problems and damages such as discharge, mistaken touch of electrification equipment and the like possibly occurring in middle-mounted switch cabinet maintenance, fault treatment and electrification test.
In order to solve the technical problems, the invention adopts the following technical scheme: in put handcart-type cubical switchboard circuit breaker compartment maintenance protection against electric shock device, place in put in the cubical switchboard, under valve mechanism opening state for shelter from valve mechanism, including insulating safety barrier, ground connection copper bar, insulating handle, support bracket, the ground connection copper bar sets up in insulating safety barrier's the place ahead and connects the earth conductor, insulating handle sets up in insulating safety barrier's the place ahead for hold when getting and putting the device, support bracket installs in insulating safety barrier's bottom, is used for supporting at put the cubical switchboard diapire, makes insulating safety barrier keep upright state, insulating safety barrier 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 compress and fix the grounding copper bar.
Preferably, the two grounding copper bars are arranged, the two grounding copper bars are all L-shaped, the upper sides of the transverse sides of the two grounding copper bars are parallel up and down, the free ends of the vertical sides are provided with connecting pieces, the connecting pieces are provided with spacing spaces in front of the insulating safety baffle, and the connecting pieces of the two grounding copper bars are stacked and fixedly connected through connecting bolts.
Preferably, the grounding wire is fixed to the connecting bolt.
Preferably, the support bracket is a foldable tripod, and the foldable tripod comprises a side 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 being stored as 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 kidney-shaped groove on the bottom edge through a pin shaft.
According to the technical scheme, the electric shock prevention device for overhauling the circuit breaker compartment of the middle handcart type switch cabinet is arranged in the middle handcart type switch cabinet, the insulating safety baffle is shielded in front of the valve mechanism in the opening state of the valve mechanism, the insulating handle is used for holding the device when the device is taken and placed, and the supporting bracket is used for supporting the bottom wall of the middle handcart type switch cabinet, so that the insulating safety baffle is kept in an upright state.
Therefore, the method has the following beneficial effects: in the use, can keep sufficient safe distance between maintainer and the electrified body, guarantee maintainer's in-process maintenance safety, promote maintenance work's security and reliability, shortened the maintenance time.
The specific technical scheme and the beneficial effects of the invention are described in detail in the following detailed description with reference to the accompanying drawings.
Drawings
The invention is further described with reference to the drawings and detailed description which follow:
FIG. 1 is a schematic front view of an in-place handcart type switchgear breaker compartment overhaul anti-shock device of the present invention;
FIG. 2 is a side view of a centrally located handcart type switchgear breaker compartment service anti-shock device of the present invention;
in the figure: 1-insulating safety shield, 2-grounding copper bar, 21-connecting sheet, 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 following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Noun interpretation
Breaker compartment: the middle part of the centrally installed switchgear is provided with rails at two sides of the compartment, and the arched handcart moves from a test position to a working position in the switchgear. In the process, the valves on the upper and lower contact boxes are linked with the handcart and are automatically opened at the same time; when the handcart moves in the opposite direction, the valve is automatically closed until the handcart moves to the test position to completely cover the fixed contact box.
Valve mechanism: the shutter mechanism is typically in the middle of the switchgear cabinet at the same height as the circuit breaker trolley. The valve mechanism is closed when in the test position, the primary charged body is thoroughly isolated, and safety guarantee is provided for operators and equipment. In the operating position, the shutter mechanism is open, and the circuit breaker trolley can divide and operate the power delivered by the equipment.
In order to complete the maintenance work of the middle-set type switch cabinet, such as the falling-off treatment of a safety baffle between contacts, the maintenance work of a valve mechanism, the cleaning and adding of lubricating oil and the like in the cabinet, ensure the safety distance between an operator appliance and electrified equipment, prevent personal injury, improve the maintenance effectiveness and reliability of cabinet elements, and very need to develop a set of special appliance to solve various problems and damages such as discharge, mistaken touch of the electrified equipment and the like possibly occurring in the maintenance, fault treatment and electrified test of the middle-set type switch cabinet.
Therefore, in order to minimize the safety risk of the working site, ensure the safety of maintenance staff during maintenance of the middle-mounted switch cabinet, improve the safety and reliability of maintenance work, prevent electric shock by mistake, and design the device for preventing electric shock during maintenance of the middle-mounted handcart type switch cabinet breaker compartment.
Referring to fig. 1 and 2, the electric shock prevention device for overhauling a circuit breaker compartment of a centrally-mounted handcart type switch cabinet is placed in the centrally-mounted switch cabinet, in the open state of a valve mechanism, the electric shock prevention device is used for shielding the front of the valve mechanism and comprises an insulating safety barrier 1, a grounding copper bar 2, an insulating handle 3 and a supporting bracket 4, wherein the grounding copper bar 2 is arranged in front of the insulating safety barrier and is connected with a grounding wire 23, the insulating handle 3 is arranged in front of the insulating safety barrier and is used for holding when the device is taken and placed, and the supporting bracket 4 is installed at the bottom of the insulating safety barrier and is used for supporting the bottom wall of the centrally-mounted switch cabinet so that the insulating safety barrier is kept in an upright state.
In this embodiment, the insulating handle 3 and the supporting bracket 4 are fixed on the insulating safety barrier 1 by adopting the fixing screws and simultaneously compress and fix the grounding copper bar 2, so that the grounding copper bar 2 does not need to be fastened independently, the installation is convenient, and the cost is saved.
Specifically, the two grounding copper bars 2 are arranged, the two grounding copper bars are all L-shaped, the upper sides of the transverse sides of the two grounding copper bars are parallel up and down, the free ends of the vertical sides are provided with connecting pieces 21, the connecting pieces are provided with spacing spaces in front of the insulating safety barrier, and the connecting pieces of the two grounding copper bars are stacked and fixedly connected through connecting bolts 22. Meanwhile, the ground wire 23 is fixed to the connection bolt.
Wherein, insulating safety barrier 1 adopts insulating cushion to make. The material has good physical and mechanical properties, excellent insulating property, arc resistance and tracking resistance, and can work in an environment with high requirements on medium numbers in air at-35 ℃ to +100 ℃ in a dry state. The voltage class of the insulating rubber pad adopted by the embodiment is 10kV, and the insulating requirement of a 10kV switching station can be met. The insulating handle 3 is made of bakelite, and the surface is subjected to plastic spraying treatment, so that the insulating handle has good characteristics of solvent resistance, engine oil resistance and grease resistance.
As an embodiment, the support bracket 4 is a foldable tripod, and the foldable tripod includes a side 42 fixed in front of the insulating safety barrier, a bottom edge 41 hinged to the bottom of the side and capable of being folded upwards and being stored as a whole with the side, and a connecting rod 43 with one end hinged to the side and the other end hinged to the kidney slot on the bottom edge through a pin. Because the support bracket 4 can be folded when not in use, a large space can be avoided, and in addition, the support bracket can be effectively supported in an upright state of the insulating safety barrier after being unfolded.
The electric shock prevention device for overhauling the compartment of the centrally installed handcart type switch cabinet breaker in the embodiment is a safe, universal and convenient electric shock prevention safety baffle device. The field application shows that the operation is flexible, the operation is complete and convenient, the insulation is reliable, the safety of maintenance work is greatly improved, the labor intensity of workers is reduced, the working efficiency is improved, and the device has higher popularization and application values.
While the invention has been described in terms of specific embodiments, it will be appreciated by those skilled in the art that the invention is not limited to the specific embodiments described above. Any modifications which do not depart from the functional and structural principles of the present invention are intended to be included within the scope of the appended claims.
Claims (3)
1. In put handcart-type cubical switchboard breaker compartment maintenance protection against electric shock device, place in put in the cubical switchboard for shelter from valve mechanism under valve mechanism open state, its characterized in that: the device 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 wire, the insulating handle is arranged in front of the insulating safety baffle and is used for holding when the device is taken and placed, and the supporting bracket is arranged at the bottom of the insulating safety baffle and is used for supporting the bottom wall of a centrally-mounted switch cabinet so that the insulating safety baffle is kept in an upright state; the insulating safety barrier adopts insulating cushion to make, insulating handle is the bakelite material, and the surface is moulded and is spouted the processing, insulating handle and support bracket adopt set screw to be fixed in insulating safety barrier and compress tightly the ground connection copper bar simultaneously fixedly, support bracket is collapsible tripod, but collapsible tripod including be fixed in the preceding side of insulating safety barrier, with side bottom articulated and can upwards fold with the side accomodate as an organic whole the base to and one end is articulated with the side, and the other end is articulated connecting rod through round pin axle and kidney slot on the base.
2. The mid-carriage switchgear circuit breaker compartment service anti-shock device of claim 1, wherein: the two grounding copper bars 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 are provided with spacing spaces in front of the insulating safety baffle, and the connecting pieces of the two grounding copper bars are stacked and fixedly connected through connecting bolts.
3. The mid-carriage switchgear circuit breaker compartment service anti-shock device of claim 2, wherein: the grounding wire is fixed on the connecting bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509584.5A CN113381330B (en) | 2021-05-11 | 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 | 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 CN113381330A (en) | 2021-09-10 |
| CN113381330B true CN113381330B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110509584.5A Active CN113381330B (en) | 2021-05-11 | 2021-05-11 | Electric shock preventing device for overhauling compartment of breaker of centrally-mounted handcart type switch cabinet |
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| Country | Link |
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| CN (1) | CN113381330B (en) |
Families Citing this family (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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (4)
| 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 |
| CN101728780B (en) * | 2009-12-21 | 2011-12-28 | 安徽鑫龙电器股份有限公司 | Grounding device of metal-clad moveable high-voltage switchgear |
| US9607784B2 (en) * | 2014-03-14 | 2017-03-28 | 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 |
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2021
- 2021-05-11 CN CN202110509584.5A patent/CN113381330B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| CN113381330A (en) | 2021-09-10 |
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