CN203406551U - Air insulated ring-network cabinet capable of safely and reliably operating - Google Patents
Air insulated ring-network cabinet capable of safely and reliably operating Download PDFInfo
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- CN203406551U CN203406551U CN201320389874.1U CN201320389874U CN203406551U CN 203406551 U CN203406551 U CN 203406551U CN 201320389874 U CN201320389874 U CN 201320389874U CN 203406551 U CN203406551 U CN 203406551U
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- main unit
- ring main
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- air insulation
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Abstract
An air insulated ring-network cabinet capable of safely and reliably operating comprises a sealing shell, and a plurality of control units which are mounted in the sealing shell and connected by connection bus bars. Each control unit comprises a group of circuit breakers and an isolation switch to control one incoming line or one outgoing line, a mechanism operation chamber and a wiring chamber are arranged on the outer part of the front wall of the sealing shell, an access port and an access port sealing cover plate are arranged on the back wall, wherein the operation end of each control unit is arranged in the mechanism operation chamber, a capacitance voltage-balance screening bus is used as the bus of each control unit, and the leading-out terminal of the bus is connected with the external circuit sequentially by a D style bus joint and an insulator which is arranged on the side wall of the wiring chamber. The distribution element devices are arranged in the air-filled sealing shell, and gas leakage problem is avoided, so as to greatly increase the protection level of the ring-network cabinet, ensure the reliability of the ring-network cabinet, reduce the maintenance costs and the environment pollution.
Description
Technical field
The utility model relates to a kind of high-tension switch cabinet using in ring network power supply system, belongs to switch cubicle technical field.
Background technology
In order to improve power supply reliability, make user obtain electric energy from two independent current sources, conventionally power supply network is connected into annular, this supply power mode is referred to as ring network power supply.Ring network power supply system is used in high-tension switch cabinet general custom and is called ring main unit.There is many design defect in existing ring main unit, its weak point is mainly manifested in the following aspects:
One, conventional ring main unit degree of protection all lower (outdoor equipment is generally IP33), while being arranged on seriously polluted or humidity larger area, be easy to be subject to the impact of environmental factor (as filthy in moisture, condensation, dust and chemical industry), insulation level is declined, and then cause insulation flashover accident, greatly reduce reliability and the useful life of ring main unit.
Case gas-filled type ring main unit (primary conductive parts are arranged in the airtight casing that is filled with SF6 gas) is although have higher degree of protection altogether, but the sealing of this ring main unit is difficult to be guaranteed, when SF6 Leakage Gas is to a certain extent time, will affect the safe operation of ring main unit, cases of gross violationly also may cause electric accident, so operational management personnel need often equipment to be carried out to tonifying Qi, have so just caused the waste of material, have improved the maintenance cost of ring main unit.In addition, because SF6 is a kind of greenhouse gas, will be to environment once leak out, so its leakage problem is just receiving more and more higher concern.
Two, the bus in ring main unit is to be connected with external cable by being arranged on the conductive cores of the insulator inside on cabinet, and the conductive cores of insulator is connected with bus in cabinet by busbar joint.Existing busbar joint is all that head is with the hexagon-headed bolt of cylindric power lug, double-screw bolt is partly screwed in the screwed hole of insulator conductive cores, fastening with connecting bolt after the overlap joint of the termination of bus in cylindric power lug and cabinet, finally put the connection that insulator sheath completes bus.The shortcoming of this method of attachment is that the part of busbar shiplap joint in cylindric power lug and cabinet is thicker, the neither installation that is also unfavorable for insulator sheath attractive in appearance, the more important thing is that overlapping part surface is not round and smooth, easily cause point discharge, the reliability of the ring main unit greatly having reduced.
Three, ring main unit generally comprises a plurality of control units, and each control unit comprises one group of circuit breaker, can control road inlet wire or an outlet.No matter traditional ring main unit has several control units, between each control unit, all do not take quarantine measures, when any one control unit wherein breaks down, the heat of generation and flue gas all can affect the normal operation of other control unit, and fault coverage is further expanded.
Four, in ring main unit, all arranging current carrying bus and branch bar, because shape of generatrix is irregular and electric pressure is higher, around it, electric field very easily distorts, and causes ring main unit partial discharge even to puncture.The method that traditional ring main unit is generally taked to increase not distance between isopen and between phase line and ground wire improves dielectric strength, but will inevitably make like this volume of equipment increase, and manufacturing cost increases.
Utility model content
The purpose of this utility model is the drawback for prior art, and the air insulation ring main unit safe and reliable to operation that a kind of degree of protection is high is provided, and to improve the reliability of ring main unit, reduces its manufacture and maintenance cost, reduces pollution on the environment.
Problem described in the utility model realizes with following technical proposals:
A kind of air insulation ring main unit safe and reliable to operation, passing through in formation comprises seal casinghousing and is arranged on seal casinghousing is connected a plurality of control units that busbar is connected, one group of circuit breaker and the isolating switch of each control unit are controlled road inlet wire or an outlet, the antetheca outer setting of described seal casinghousing has mechanism's operating room and interstar connection room, rear wall is provided with access hole and access hole seal cover board, it is indoor that the operating side of each control unit is positioned at mechanism operation, the bus of each control unit all adopts capacitor voltage equalizing shielding bus, the exit of capacitor voltage equalizing shielding bus is connected with external circuit with the insulator being arranged on interstar connection room sidewall through D type busbar joint successively.
Above-mentioned air insulation ring main unit safe and reliable to operation, described capacitor voltage equalizing shielding bus comprises the coating layer of copper conductor and copper conductor outside, described coating layer comprises a plurality of insulating barriers, between adjacent two insulating barriers, is provided with screen.
Above-mentioned air insulation ring main unit safe and reliable to operation, described D type busbar joint comprises that connecting bolt and head are with the hexagon-headed bolt of column power lug, double-screw bolt part and the internal thread in the blind hole of insulator conductive cores end of described hexagon-headed bolt match, one end that described column power lug is connected with the head of hexagon-headed bolt is cylindric, the one end being connected with the termination of capacitor voltage equalizing shielding bus is semi-cylindrical, at the rectangular surfaces middle part of semicolumn, is provided with the screwed hole matching with connecting bolt.
Above-mentioned air insulation ring main unit safe and reliable to operation, the bottom of described seal casinghousing is provided with relief valve.
Above-mentioned air insulation ring main unit safe and reliable to operation, the inside of described seal casinghousing is provided with drier.
Above-mentioned air insulation ring main unit safe and reliable to operation, is provided with seal gasket between described seal cover board and seal casinghousing.
Above-mentioned air insulation ring main unit safe and reliable to operation, is provided with power transmission shaft increasing climbs device by same power transmission shaft between the adjacent circuit breaker of being handled.Power transmission shaft increases climbs the structure that device adopts umbrella shape, stack, can increase creepage distance.
Above-mentioned air insulation ring main unit safe and reliable to operation, in a plurality of screens of described capacitor voltage equalizing shielding bus, is positioned at outermost one deck and is electrically connected to ground wire.
Above-mentioned air insulation ring main unit safe and reliable to operation, each insulating barrier of described capacitor voltage equalizing shielding bus consists of 7～10 strata vinyl chloride insulating tapes; The screen of described capacitor voltage equalizing shielding bus is entwined by semiconductor adhesive tape; The insulating barrier of described capacitor voltage equalizing shielding bus arranges 15～20 layers.
Above-mentioned air insulation ring main unit safe and reliable to operation is equipped with dividing plate between every two adjacent control units; Described dividing plate adopts SMC insulation board, and its thickness is 10 millimeters.
The utility model is arranged on distribution components and parts in seal casinghousing, has greatly improved the degree of protection of ring main unit; Internal bus adopts capacitor voltage equalizing shielding bus and is connected with external circuit with insulator by D type busbar joint, has effectively reduced partial discharge quantity, has guaranteed the reliability of ring main unit; This ring main unit has replaced SF6 with air, does not have gas leakage problem, thereby has reduced the maintenance cost of equipment, has reduced environment and has made pollution.
The utility model utilizes dividing plate that each control unit in ring main unit is separated, and when a certain control unit breaks down, other control unit still can normally move.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is front view of the present utility model;
Fig. 2 is left view of the present utility model;
Fig. 3 is A-A cutaway view;
Fig. 4 is the connection diagram of bus copper conductor and insulator;
Fig. 5 is B-B cutaway view;
Fig. 6 is that head is with the outline drawing of the hexagon-headed bolt of column power lug;
Fig. 7 is the left view of Fig. 6;
Fig. 8 is the vertical view of Fig. 6;
Fig. 9 is the right view of Fig. 8.
In figure, each list of reference numerals is: 1, power transmission shaft, 2, circuit breaker, 3, vacuum interrupter, 4, the quiet cutter head of isolation knife, 5, isolation knife dynamic cutter head, 6, access hole seal cover board, 7, isolation knife base, 8, capacitor voltage equalizing shielding bus, 9, interstar connection room, 10, insulator, 11, mechanism operation chamber, 12, seal casinghousing, 13, power transmission shaft increases climbs device, 14, grounding contact, 15, drier, 16, relief valve, 17, dividing plate, 18, connect busbar, 19, copper conductor, 20, insulating barrier, 21, screen, 22, insulator sheath, 23, D type busbar joint, 24, insulator conductive cores, 25, connecting bolt, 26, screwed hole, 27, hexagon-headed bolt.
Embodiment
Referring to Fig. 1, Fig. 2, seal casinghousing 12 of the present utility model utilizes 304 stainless steel materials welded seals, the components and parts such as the circuit breaker of functional unit, isolating switch are sealed in to a large interior volume, internal bus is connected with external cable by insulator 10, distribution product is in operation in hermetically sealed, non-maintaining state, degree of protection is promoted to IP67 or IP68, the harm of effectively having avoided condensation filth and flood to cause equipment safety operation.Air insulation ring main unit rear side has access hole, and access hole, by 6 sealings of access hole seal cover board, makes repair and maintenance more convenient.Owing to having adopted common box type sealing mounting means, the utility model can adapt to the running environment of 3000 meters of high height above sea level.This product thoroughly changes the traditional co-box type looped net cabinet of elimination and safeguards inconvenient defect, owing to not filling SF6 gas, has avoided the mechanical deformation problem of product, more not having gas leakage impact operation and contaminated environment phenomenon.
The drier of seal casinghousing 12 inside can be changed on time, has thoroughly solved common box type product and has been subject to the difficult problem that ambient humidity affects.Between adjacent control unit, be added with the SMC sheet material that 10mm is thick, realized the interval function of unit, effectively avoided the expansion of accident.The line of this product can be with inner ground connection or earth-free, and mode is flexible, is very easy to maintenance construction.Between seal cover board and seal casinghousing, adopt the mode of seal gasket and sealing oil combination sealing, simple in structure firm, good stability, easy for installation; Owing to having adopted the welding procedure processing and manufacturing of integral sealing, make the protection of product reach IP68, effectively avoided the condensation filth and the flood that because of environmental factor, cause to endanger the electric accident causing, and installation is not affected by height above sea level; After the local employing of bus insulation processing, effectively reduce the volume of cabinet, saved cost.
Referring to Fig. 3, capacitor voltage equalizing shielding bus is comprised of copper conductor 19, insulating barrier 20 and screen 21, and a plurality of insulating barriers 20 are coated on copper conductor 19 outsides, between adjacent two insulating barriers 20, screen 21 are set.Between inner most screen 21 and copper conductor 19, form electric capacity between adjacent shields layer 21, a plurality of capacitances in series connect.The capacity earth that copper conductor 19 is connected in series through these, the voltage on copper conductor 19 is evenly distributed on these electric capacity, has effectively prevented the distortion of electric field.The bus of switch cubicle adopts after this capacitor voltage equalizing shielding bus, although between isopen, the gap between phase line and ground wire does not greatly reduce (being less than 125mm), but because starting voltage is put in the office that capacitance plate all presses insulation processing greatly to improve sleeve pipe, obvious minimizing is put in the office of product.This capacitor voltage equalizing shielding bus has increased not between isopen, the dielectric strength between phase line and ground wire, and the volume of equipment is significantly reduced, and has solved well the technical barrier that always perplexs the industry.
Referring to Fig. 4～Fig. 9, insulator adopts D type busbar joint to be connected with bus, by head, hexagon-headed bolt 27 and the connecting bolt 25 with column power lug forms D type busbar joint, double-screw bolt part and the internal thread in insulator conductive cores 24 end blind holes of hexagon-headed bolt 27 match, column power lug is coaxial with hexagon-headed bolt 27, its one end being connected with the head of hexagon-headed bolt 27 is cylindrical, the one end being connected with ring main unit bus copper conductor 19, for half-cylindrical, is provided with the screwed hole 26 matching with connecting bolt 25 in semi-cylindrical rectangular surfaces.Such structure makes fixed screw be positioned at conductor inside, makes like this overlap joint more identical, also can not affect electric clearance because of hold-down nut, prevents electric discharge.During wiring, the end machining of ring main unit bus copper conductor 19 is become to half-cylindrical and stamps bolt hole, the half-cylindrical termination of the half-cylindrical termination of bus copper conductor 19 and column power lug is fastened, then connecting bolt 25 is screwed in to the screwed hole 26 of column power lug through after the bolt hole of bus copper conductor 19, then put the connection that insulator sheath 22 completes bus copper conductor 19.
As seen from Figure 5, after the half-cylindrical termination of the half-cylindrical termination of bus copper conductor 19 and column power lug fastens close to cylindrical, connecting bolt 25 is positioned at the counterbore of bus copper conductor 19, power lug surface is very round and smooth, avoided the phenomenon of point discharge, and the assembling of insulator sheath 22 is very smooth and easy, can not be subject to the obstruction of joint.
Claims (10)
1. an air insulation ring main unit safe and reliable to operation, it is characterized in that, it comprises seal casinghousing (12) and is arranged on pass through in seal casinghousing (12) and is connected the connected a plurality of control units of busbar (18), one group of circuit breaker and the isolating switch of each control unit are controlled road inlet wire or an outlet, the antetheca outer setting of described seal casinghousing (12) has mechanism's operating room (11) and interstar connection room (9), rear wall is provided with access hole and access hole seal cover board (6), the operating side of each control unit is positioned at mechanism operation chamber (11), the bus of each control unit all adopts capacitor voltage equalizing shielding bus (8), the exit of capacitor voltage equalizing shielding bus (8) is connected with external circuit with the insulator (10) being arranged on interstar connection room (9) sidewall through D type busbar joint (23) successively.
2. a kind of air insulation ring main unit safe and reliable to operation according to claim 1, it is characterized in that, described capacitor voltage equalizing shielding bus (8) comprises copper conductor (10) and the outside coating layer of copper conductor (10), described coating layer comprises a plurality of insulating barriers (20), is provided with screen (21) between adjacent two insulating barriers (20).
3. a kind of air insulation ring main unit safe and reliable to operation according to claim 1 and 2, it is characterized in that, described D type busbar joint (23) comprises that connecting bolt (25) and head are with the hexagon-headed bolt (27) of column power lug, double-screw bolt part and the internal thread in the blind hole of insulator conductive cores (24) end of described hexagon-headed bolt (27) match, described column power lug is cylindric with one end that the head of hexagon-headed bolt (27) is connected, the one end being connected with the termination of capacitor voltage equalizing shielding bus (8) is semi-cylindrical, rectangular surfaces middle part at semicolumn is provided with the screwed hole matching with connecting bolt (25).
4. a kind of air insulation ring main unit safe and reliable to operation according to claim 3, is characterized in that, the bottom of described seal casinghousing (12) is provided with relief valve (16).
5. a kind of air insulation ring main unit safe and reliable to operation according to claim 4, is characterized in that, the inside of described seal casinghousing (12) is provided with drier (15).
6. a kind of air insulation ring main unit safe and reliable to operation according to claim 5, is characterized in that, between described seal cover board (6) and seal casinghousing (12), is provided with seal gasket.
7. a kind of air insulation ring main unit safe and reliable to operation according to claim 6, is characterized in that, is provided with power transmission shaft increasing climbs device (13) by same power transmission shaft between the adjacent circuit breaker of being handled.
8. a kind of air insulation ring main unit safe and reliable to operation according to claim 7, is characterized in that, in a plurality of screens (21) of described capacitor voltage equalizing shielding bus (8), is positioned at outermost one deck and is electrically connected to ground wire.
9. a kind of air insulation ring main unit safe and reliable to operation according to claim 8, is characterized in that, each insulating barrier (20) of described capacitor voltage equalizing shielding bus (8) consists of 7～10 strata vinyl chloride insulating tapes; The screen (21) of described capacitor voltage equalizing shielding bus (8) is entwined by semiconductor adhesive tape; The insulating barrier (20) of described capacitor voltage equalizing shielding bus (8) arranges 15～20 layers.
10. a kind of air insulation ring main unit safe and reliable to operation according to claim 9, is characterized in that, between every two adjacent control units, is equipped with dividing plate (17); Described dividing plate (17) adopts SMC insulation board, and its thickness is 10 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389874.1U CN203406551U (en) | 2013-07-02 | 2013-07-02 | Air insulated ring-network cabinet capable of safely and reliably operating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389874.1U CN203406551U (en) | 2013-07-02 | 2013-07-02 | Air insulated ring-network cabinet capable of safely and reliably operating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406551U true CN203406551U (en) | 2014-01-22 |
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ID=49942471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320389874.1U Expired - Fee Related CN203406551U (en) | 2013-07-02 | 2013-07-02 | Air insulated ring-network cabinet capable of safely and reliably operating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406551U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354331A (en) * | 2013-07-02 | 2013-10-16 | 保定鼎阳电力科技发展有限公司 | Air insulated ring main unit with high operation safety and reliability |
| CN104575716A (en) * | 2014-12-03 | 2015-04-29 | 常州市拓源电缆成套有限公司 | Capacitance type composite insulated busbar for GIS (gas insulated switchgear) |
| CN107819357A (en) * | 2016-09-13 | 2018-03-20 | 通用电气公司 | Isolation parallel UPS system with abort situation detection |
| CN110289190A (en) * | 2015-10-23 | 2019-09-27 | 北京瑞恒新源投资有限公司 | Multifunctional capacitor molded cannula with vacuum interrupter |
-
2013
- 2013-07-02 CN CN201320389874.1U patent/CN203406551U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103354331A (en) * | 2013-07-02 | 2013-10-16 | 保定鼎阳电力科技发展有限公司 | Air insulated ring main unit with high operation safety and reliability |
| CN103354331B (en) * | 2013-07-02 | 2015-12-23 | 鼎阳电力科技服务有限公司 | A kind of air insulation ring main unit safe and reliable to operation |
| CN104575716A (en) * | 2014-12-03 | 2015-04-29 | 常州市拓源电缆成套有限公司 | Capacitance type composite insulated busbar for GIS (gas insulated switchgear) |
| CN110289190A (en) * | 2015-10-23 | 2019-09-27 | 北京瑞恒新源投资有限公司 | Multifunctional capacitor molded cannula with vacuum interrupter |
| CN107819357A (en) * | 2016-09-13 | 2018-03-20 | 通用电气公司 | Isolation parallel UPS system with abort situation detection |
| CN107819357B (en) * | 2016-09-13 | 2023-01-24 | Abb瑞士股份有限公司 | Isolated parallel UPS system with fault location detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DINYOUNG ELECTRONIC TECHNOLOGY SERVICE CO., LTD. Free format text: FORMER NAME: BAODING DINGYANG POWER TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 071051 Hebei city of Baoding province Baoding City Heng Road No. 118 Patentee after: DINYOUNG POWER TECHNOLOGY SERVICES CO., LTD. Address before: 071051 Hebei city of Baoding province Baoding City Heng Road No. 118 Patentee before: Baoding Dingyang Power Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140122 Termination date: 20170702 |