CN207474334U - A kind of isolation circuit breakers for dry air insulation ring main unit - Google Patents

A kind of isolation circuit breakers for dry air insulation ring main unit Download PDF

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Publication number
CN207474334U
CN207474334U CN201721564429.9U CN201721564429U CN207474334U CN 207474334 U CN207474334 U CN 207474334U CN 201721564429 U CN201721564429 U CN 201721564429U CN 207474334 U CN207474334 U CN 207474334U
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China
Prior art keywords
insulating support
disconnecting switch
dry air
babinet
support rod
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Application number
CN201721564429.9U
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Chinese (zh)
Inventor
张力
张永前
陈桂岭
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Chengdu Min Da Power Equipment Co Ltd
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Chengdu Min Da Power Equipment Co Ltd
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Priority to CN201721564429.9U priority Critical patent/CN207474334U/en
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Abstract

The utility model discloses a kind of isolation circuit breakers for dry air insulation ring main unit, including the babinet and vacuum circuit breaker being arranged in babinet, upper disconnecting switch and lower disconnecting switch, are full of dry air in babinet.The utility model increases disconnecting switch on the basis of original isolation circuit breakers, can not only form safe isolation fracture, ensures that main bus-bar power supply is normal, and lower disconnecting switch with safety ground, can ensure the personal safety of service personnel;Meanwhile the utility model is insulated using pure dry air, compared to the compound inslation mode of pole type, heat dissipation is more preferable, and cost is lower, reliability higher, and quiet distance alternate and over the ground is >=100mm, fully meets the due dielectric level of 12KV switchgears.

Description

A kind of isolation circuit breakers for dry air insulation ring main unit
Technical field
The utility model is related to a kind of isolation circuit breakers for dry air insulation ring main unit, belong to high voltage electric equipment neck Domain.
Background technology
The main product in power distribution network is SF6 gas-insulated ring networks cabinet (also known as gas-filling cabinet) at present, and electric energy is negative by being isolated Lotus switchs and disconnecting switch is sent to user.When ring main unit breaks down or needs maintenance, on-load switch is separately isolated in order It is operated with after disconnecting switch, since isolation on-load switch has three operation, isolation and ground connection stations in itself, so isolation An isolation fracture can be formed after on-load switch separating brake, which can ensure personal safety during maintenance.During maintenance, isolation On-load switch can ensure that 10KV busbares will not have a power failure not interfering with the operation between busbar and other switchgears.
Since SF6 gases are greenhouse gases, it can cause environmental pollution, so it is exhausted to have developed solid in recent years Edge ring main unit, main switch are vacuum load switch or vacuum circuit breaker, are broken because main switch is vacuum load switch or vacuum Road device (hereinafter referred to as vacuum switch), switch do not have isolation features in itself, thus in entire major loop only following one every Leave pass.It is difficult to realize in structure due to adding a disconnecting switch between vacuum switch and main bus-bar, in order to push away rapidly Go out new product, the disconnecting switch between on-load switch and busbar is cancelled in many producer's selections, this allows for scheme and defect occurs, to the greatest extent Pipe can be run, but there are security risks.When the type ring main unit breaks down or needs maintenance, in order to ensure safety, no The service entrance switch that do not trip is obtained, entire main bus-bar is allowed to power off, the cabinet for not needing to overhaul is will result in this way and is forced to have a power failure, undoubtedly Power failure range is expanded, so as to seriously affect user power utilization, at present in the solid insulation ring main unit of operation or environmentally friendly gas-insulated There is this in ring main unit.
Invention content
The purpose of this utility model is to provide a kind of isolation circuit breakers for dry air insulation ring main unit, the isolation Breaker can be such that dry air insulation ring main unit is overhauled in the case where main bus-bar does not power off.
The purpose of this utility model is achieved through the following technical solutions:It is a kind of for dry air insulation ring main unit Isolation circuit breakers, vacuum circuit breaker and lower disconnecting switch including babinet and in babinet, top of the box are equipped with inlet wire set It manages, disconnecting switch is additionally provided in babinet, and full of dry air in babinet, it is quiet that the upper disconnecting switch includes upper disconnecting switch Contact, upper disconnecting switch movable touch knife, insulated tension pole, connecting lever, shaft and static side bearing, wherein upper static contact isolation switch is fixed on On the conducting surface of entrance bushing, upper disconnecting switch movable touch knife is hinged on static side bearing, and static side bearing is fixed on vacuum circuit breaker Upper conductive plate on, the both ends of insulated tension pole are hinged respectively with upper disconnecting switch movable touch knife and connecting lever, connecting lever be fixedly connected on turn On axis, shaft is installed in rotation on babinet, and one end of shaft is connect with isolator operating mechanism.
Further, the vacuum circuit breaker include upper conductive plate, vacuum interrupter, upper insulating support rod, lower conducting plate, It is flexible coupling, insulated tension pole component, lower insulating support rod and pedestal, pedestal is mounted on the bottom of box, be vertically fixed on pedestal, Lower two groups of insulating support rods, upper conductive plate and lower conducting plate are separately mounted to the both ends of insulating support rod, upper and lower insulating supporting Bar has more respectively and upper insulating support rod and lower insulating support rod are used and be threadedly coupled, and the vacuum interrupter is located on multiple In the space that insulating support rod surrounds, and the upper end of vacuum interrupter is fixedly connected with upper conductive plate, and lower end is connected with moving conductive Bar, the upper end of insulated tension pole component and the moving conductive rod of vacuum interrupter connect, and lower end is connect with circuit breaker operation mechanism, soft company The both ends connect are connect respectively with moving conductive rod and lower conducting plate.
Further, the upper insulating support rod and lower insulating support rod are respectively four, and four upper insulating support rods Mounted on four edges of upper conductive plate, four lower insulating support rods are mounted on four edges of lower conducting plate.
Further, it is enclosed with the silicone rubber sleeve with full skirt on upper insulating support rod and lower insulating support rod.
The utility model has disconnecting switch under upper disconnecting switch and three stations, can not only form safe isolation and break Mouthful, ensure that main bus-bar power supply is normal, and lower disconnecting switch with safety ground, can ensure the personal safety of service personnel;Together When, babinet is insulated using pure dry air, and the compound inslation mode compared to pole has heat dissipation more preferable, and cost is lower, can The advantages of by property higher.
Description of the drawings
Fig. 1 is the dimensional structure diagram of the utility model;
Fig. 2 is the left view schematic diagram of utility model (dotted line in Fig. 2 is indicated by the solid line);
Fig. 3 is the schematic elevation view of utility model;
Fig. 4 is the dimensional structure diagram of upper disconnecting switch in the utility model;
Fig. 5 is the left view schematic diagram of upper disconnecting switch in the utility model;
Fig. 6 is the dimensional structure diagram of lower disconnecting switch in the utility model;
Fig. 7 is the left view schematic diagram of lower disconnecting switch in the utility model;
Fig. 8 is the dimensional structure diagram of vacuum circuit breaking device in the utility model;
Fig. 9 is the left view schematic diagram of vacuum circuit breaking device in the utility model.
It is marked in figure:1- babinets;The upper disconnecting switch of 2-;3- vacuum circuit breakers;4- circuit breaker operation mechanisms;5- fixing grooves Steel;6- outlet casing tubes;7- branch bus;Disconnecting switch under 8-;9- isolator operating mechanisms;10- entrance bushings;11- flanges; 12- earth leads;The upper disconnecting switch movable touch knifes of 21-;22- insulated tension poles;23- static side bearings;24- connecting levers;25- shafts;On 26- Static contact isolation switch;The upper conductive plates of 31-;32- vacuum interrupters;The upper insulating support rods of 33-;34- lower conducting plates;The soft companies of 35- It connects;36- insulated tension pole components;Insulating support rod under 37-;38- pedestals;39- moving conductive rods;41- breaker operator axis;42- is turned Arm;Disconnecting switch movable touch knife under 81-;Static contact isolation switch under 82-;83- insulated tension poles;84- wire connection terminals;85- insulators; 86- installs channel steel;87- bolts;88- springs;89- bolts;810- earth bus;811- grounding contacts;91- isolator operations Axis.
Specific embodiment
As shown in Fig. 1~Fig. 9, isolation circuit breakers provided in this embodiment include babinet 1, upper disconnecting switch 2, vacuum circuit breaker Device 3 and lower disconnecting switch 8, upper disconnecting switch 2, vacuum circuit breaking device 3 and lower disconnecting switch 8 are located in babinet 1, lower disconnecting switch 8 be the lower disconnecting switch of three stations, and 1 outer surface of babinet is equipped with tripper operating mechanism 4 and isolator operating mechanism 9, the top of babinet 1 is equipped with entrance bushing 10, and 10 one end of entrance bushing is penetrated in babinet 1.
The upper disconnecting switch 2 includes upper disconnecting switch movable touch knife 21, insulated tension pole 22, static side bearing 23, connecting lever 24, turns Axis 25 and upper static contact isolation switch 26, upper static contact isolation switch 26 are fixed on the conducting surface of entrance bushing 10, upper isolation One end of switch movable contact knife 21 is hinged on static side bearing 23, and static side bearing 23 is fixed on the upper conductive plate 31 of vacuum circuit breaker 3 On, one end of insulated tension pole 22 is hinged on the middle part of disconnecting switch movable touch knife 21, and one end of the other end and connecting lever 24 is hinged, turns The other end of arm 24 is welded in shaft 25, and one end of shaft 25 is installed in rotation on by flange 11 on babinet 1, shaft 25 The other end stretch out and babinet 1 and connect with isolator operating mechanism 9.Shaft 25 is driven to revolve by isolator operating mechanism 9 Turn, it can be achieved that the contact with upper static contact isolation switch 26 of upper disconnecting switch movable touch knife 21 or detaching.
The vacuum circuit breaker 3 include upper conductive plate 31, vacuum interrupter 32, upper insulating support rod 33, lower conducting plate 34, Be flexible coupling 35, insulated tension pole component 36, lower insulating support rod 37, pedestal 38 and moving conductive rod 39, and pedestal 38 is fixed on babinet 1 Bottom is vertically fixed lower insulating support rod 37 on four angles of 1 bottom of babinet, under lower conducting plate 34 is located at by insulating nut On the end face of insulating support rod 37, the threaded portion of lower 37 upper end of insulating support rod pass through the hole of 34 4 jiaos of lower conducting plate with it is upper absolutely The threaded hole connection of 33 lower end of edge supporting rod, the threaded portion of upper 33 upper end of insulating support rod screw in the spiral shell of upper 31 4 jiaos of conductive plate In pit, insulating support rod 33 is made to be fixedly connected with upper conductive plate 31, upper conductive plate 31 passes through bolt with vacuum interrupter 32 It tightens together.The connecting portion and lower insulating support rod 37 and pedestal 38 of the lower conducting plate 34 and upper insulating support rod 33 Connecting portion set there are two insulating nut, for adjusting the height of quadrangle, so that entire keep vertical between pole and pedestal 38. The outer surface of every upper insulating support rod 33 and lower insulating support rod 37 is enclosed with the silicone rubber sleeve with full skirt, is climbed for increasing Electrical distance, make its >=240mm (being calculated according to 20mm/KV).
The upper end of the insulated tension pole component 36 is threadedly coupled with the moving conductive rod 39 of vacuum interrupter 2, lower end and open circuit The connecting lever 42 of device operating shaft 41 is hinged, and the hole on connecting lever 42 is bar hole, so that during the operation of breaker switching on and off, offsets insulation The lateral shift generated during 36 longitudinal direction linear movement of rod assembly.Described 35 one end of being flexible coupling passes through on insulated tension pole component 36 The nut at end is fastened on the end face of moving conductive rod 39, and the other end and lower conducting plate 34 are affixed, thus constitute and go out from vacuum 32 static side of arc chamber is to the electrical connection of lower conducting plate 34.
Lower disconnecting switch is with operation, isolation, the disconnecting switch for being grounded three stations, packet used by the utility model Include lower disconnecting switch movable touch knife 81, lower static contact isolation switch 82, insulated tension pole 83, wire connection terminal 84 and insulator 85, under every It is fixed on vacuum circuit breaker 3 from switch static contact 82, lower disconnecting switch movable touch knife 81, wire connection terminal 84 and insulator 85 are successively It is fixed on installation channel steel 86 with bolt 87 after being tightened together with bolt, the both ends of installation channel steel 86 are welded on fixed channel steel 5 On.Earth bus 810 and grounding contact 811 are fixedly connected on isolator operation axis 91, the both ends difference of insulated tension pole 83 It is hinged with the connecting lever of lower disconnecting switch movable touch knife 81 and isolator operation axis 91, isolator operation axis 91 is rotatably mounted On babinet 1, wherein one end is stretched out babinet 1 and is connect with isolator operating mechanism 9, and the other end is hinged on the method for 1 inside of babinet On orchid 11.Earth bus 810 is connected by earth lead 12 with shell, so that switch wire outlet terminal reliable ground.Lower disconnecting switch The both ends of movable touch knife 81 are respectively arranged with spring 88, and the pressure of 89 adjustable springs 88 of rotating bolt is tactile so as to move lower disconnecting switch Knife 81 can reliable contacts with lower static contact isolation switch 82 and grounding contact 811.Wire connection terminal 84 is led by branch bus 7 with outlet Electric pole connects, and outlet conductive pole sealing is in the tapered outlet casing tube 6 of the band suppressed by insulating materials.When rotate counterclockwise every When leaving pass operating shaft 91, lower disconnecting switch movable touch knife 81 is pushed to lower static contact isolation switch 82, and two under piece disconnecting switch are moved Contact knife 81, which clamps lower static contact isolation switch 82, is connected major loop, and when rotating clockwise isolator operation axis 91, under Disconnecting switch movable touch knife 81 is pulled to isolated location, further rotates isolator operation axis 91, lower disconnecting switch movable touch knife 81 Earthing position is pulled to, two under piece disconnecting switch movable touch knifes 81 clamp grounding contact 811.
The utility model is entire main when vacuum circuit breaker 3, upper disconnecting switch 2 and lower disconnecting switch 8 are in closing position Circuit is connected, and electric current enters babinet 1 from entrance bushing 10, successively by upper disconnecting switch movable touch knife 21, upper conductive plate 31, vacuum Arc-chutes 32, be flexible coupling 35, lower disconnecting switch movable touch knife 81, wire connection terminal 84, branch bus 7 are sent out to outlet casing tube 6.Work as needs During disconnection, first by 3 separating brake of vacuum circuit breaker, then separately upper disconnecting switch movable touch knife 21 and lower disconnecting switch movable touch knife 81 arrive every It offs normal and puts, at this point, the clear distance of isolation fracture is more than 120mm, form the isolation fracture of a safety.When being if desired grounded, Lower disconnecting switch movable touch knife 81 is operated into earthing position again, by earth lead 12 by the ground connection of babinet 1 and lower disconnecting switch 8 Busbar 810 is connected, it can be achieved that switching the reliable ground of lower end.Vacuum circuit breaker 3,2 and of upper disconnecting switch inside babinet 1 After the completion of lower 8 assembling and setting of disconnecting switch, babinet 1 is filled with by the unwelded side welded closure of babinet 1, then by dry air In.
The utility model is equipped with the lower disconnecting switch 8 of upper 2 and three station of disconnecting switch in babinet, can not only form safety Isolation fracture, ensure that bussed supply is normal, and can also reliable ground, ensure the safety of service personnel;Using dry in babinet 1 The compound inslation mode of dry air insulation rather than pole, compared with the three-phase composite insulation of pole type, heat dissipation is more Good, cost is less expensive, reliability higher, and quiet distance alternate and over the ground is >=100mm, and fully meeting 12KV switchgears should Some dielectric levels
The above is only the utility model preferred embodiment, but the scope of protection of the utility model is not limited to This, any transformation carried out based on technical solution provided by the utility model and inventive concept and replacement should all be covered in this reality With in novel protection domain.

Claims (4)

1. a kind of isolation circuit breakers for dry air insulation ring main unit, the vacuum including babinet and in babinet is broken Road device and lower disconnecting switch, top of the box are equipped with entrance bushing, it is characterised in that:Disconnecting switch, and case are additionally provided in babinet In vivo full of dry air, the upper disconnecting switch includes upper static contact isolation switch, upper disconnecting switch movable touch knife, insulation drawing Bar, connecting lever, shaft and static side bearing wherein upper static contact isolation switch is fixed on the conducting surface of entrance bushing, are above kept apart It closes movable touch knife to be hinged on static side bearing, static side bearing is fixed on the upper conductive plate of vacuum circuit breaker, the both ends of insulated tension pole It is hinged respectively with upper disconnecting switch movable touch knife and connecting lever, connecting lever is fixedly connected in shaft, and shaft is installed in rotation on babinet On, one end of shaft is connect with isolator operating mechanism.
2. the isolation circuit breakers according to claim 1 for dry air insulation ring main unit, it is characterised in that:It is described true Empty breaker include upper conductive plate, vacuum interrupter, upper insulating support rod, lower conducting plate, be flexible coupling, insulated tension pole component, under Insulating support rod and pedestal, pedestal are mounted on the bottom of box, are vertically fixed upper and lower two groups of insulating support rods on pedestal, above lead Battery plate and lower conducting plate are separately mounted to the both ends of insulating support rod, and upper and lower insulating support rod has more and upper insulation respectively Using being threadedly coupled, the vacuum interrupter is located at the space that multiple upper insulating support rods surround for supporting rod and lower insulating support rod It is interior, and the upper end of vacuum interrupter is fixedly connected with upper conductive plate, lower end is connected with moving conductive rod, the upper end of insulated tension pole component Connect with the moving conductive rod of vacuum interrupter, lower end is connect with circuit breaker operation mechanism, the both ends being flexible coupling respectively with moving conductive Bar is connected with lower conducting plate.
3. the isolation circuit breakers according to claim 2 for dry air insulation ring main unit, it is characterised in that:On described Insulating support rod and lower insulating support rod are respectively four, and four upper insulating support rods are mounted on four corners of upper conductive plate Place, four lower insulating support rods are mounted on four edges of lower conducting plate.
4. the isolation circuit breakers according to claim 1 for dry air insulation ring main unit, it is characterised in that:Upper insulation The silicone rubber sleeve with full skirt is enclosed on supporting rod and lower insulating support rod.
CN201721564429.9U 2017-11-21 2017-11-21 A kind of isolation circuit breakers for dry air insulation ring main unit Active CN207474334U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721564429.9U CN207474334U (en) 2017-11-21 2017-11-21 A kind of isolation circuit breakers for dry air insulation ring main unit

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Application Number Priority Date Filing Date Title
CN201721564429.9U CN207474334U (en) 2017-11-21 2017-11-21 A kind of isolation circuit breakers for dry air insulation ring main unit

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108923303A (en) * 2018-06-22 2018-11-30 河南森源电气股份有限公司 Gas-filling cabinet
CN109346375A (en) * 2018-10-23 2019-02-15 深圳市英豪电力科技有限公司 A kind of killer switch
CN109637886A (en) * 2019-01-09 2019-04-16 珠海许继电气有限公司 A kind of breaker
CN110739185A (en) * 2019-10-31 2020-01-31 江苏省如高高压电器有限公司 small-sized circuit breakers
CN111313264A (en) * 2019-12-09 2020-06-19 杰创电气有限公司 Solid insulation bus-bar connection cabinet
CN111555171A (en) * 2020-05-13 2020-08-18 平高集团有限公司 Utmost point post mount and use inflatable cubical switchboard of this utmost point post mount
CN114284926A (en) * 2021-12-27 2022-04-05 亨斯迈(杭州)电力技术有限公司 Atmospheric air insulation switch equipment

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108923303A (en) * 2018-06-22 2018-11-30 河南森源电气股份有限公司 Gas-filling cabinet
CN109346375A (en) * 2018-10-23 2019-02-15 深圳市英豪电力科技有限公司 A kind of killer switch
CN109637886A (en) * 2019-01-09 2019-04-16 珠海许继电气有限公司 A kind of breaker
CN110739185A (en) * 2019-10-31 2020-01-31 江苏省如高高压电器有限公司 small-sized circuit breakers
CN111313264A (en) * 2019-12-09 2020-06-19 杰创电气有限公司 Solid insulation bus-bar connection cabinet
CN111555171A (en) * 2020-05-13 2020-08-18 平高集团有限公司 Utmost point post mount and use inflatable cubical switchboard of this utmost point post mount
CN111555171B (en) * 2020-05-13 2022-07-05 平高集团有限公司 Utmost point post mount and use inflatable cubical switchboard of this utmost point post mount
CN114284926A (en) * 2021-12-27 2022-04-05 亨斯迈(杭州)电力技术有限公司 Atmospheric air insulation switch equipment
CN114284926B (en) * 2021-12-27 2023-12-15 亨斯迈(杭州)电力技术有限公司 Atmospheric air insulation switch equipment

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