CN202524006U - High-voltage metal-enclosed switchgear - Google Patents
High-voltage metal-enclosed switchgear Download PDFInfo
- Publication number
- CN202524006U CN202524006U CN2012200426778U CN201220042677U CN202524006U CN 202524006 U CN202524006 U CN 202524006U CN 2012200426778 U CN2012200426778 U CN 2012200426778U CN 201220042677 U CN201220042677 U CN 201220042677U CN 202524006 U CN202524006 U CN 202524006U
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- CN
- China
- Prior art keywords
- cabinet
- enclosed switchgear
- voltage metal
- main cabinet
- main
- 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.)
- Expired - Fee Related
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- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a high-voltage metal-enclosed switchgear, and relates to the field of special high-voltage metal-enclosed switchgear for railway electrification. The high-voltage metal-enclosed switchgear comprises a main cabinet and an auxiliary cabinet, wherein the main cabinet and the auxiliary cabinet are connected back to back into an integral cabinet and form a power supply unit, the main cabinet is provided with a feeder circuit breaker, and the auxiliary cabinet is provided with a by-pass disconnecting switch. The high-voltage metal-enclosed switchgear reduces the size and an occupied area greatly, saves material consumption, improves current-carrying capacity, and is novel in structure, simple in operation and practical.
Description
Technical field
The utility model relates to railway electrification special high-pressure metal enclosed switchgear field, especially a kind of high-pressure metal sealing switch equipment.
Background technology
At present; Known railway electrification metal enclosed switchgear characteristic is following: an outgoing is formed (major loop, bypass (subsequent use) loop, test loop) by three functional units; Outlet just needs three cupboards just can meet the demands, and equipment is many, and floor space is big; Article one, three of outlet cupboards will couple together respectively with busbar, and wiring is complicated, misoperation easily; Withdraw type metal enclosed switchgear is combined circuit breaker (or other switch element) and insulating contact, makes the structure of a handcart-type.Rely on handcart respectively in the service position, test position, the outflow location connection, isolation and the handcart that reach insulating contact shift out the purpose outside the cabinet.Because the bus of duplexure can only be arranged by curve, and many (maximum four) main bus bars must be horizontally.Because bus is many, also will guarantee has enough distances between each conductor, and this has just brought following problem: the volume that the galvanic circle takies in cabinet is very big, makes the volume of whole cupboard also very huge; The galvanic circle that forms after in cabinet, connecting is very long, tie point is many, has increased caloric value, has reduced current capacity; Isolating moving contact contacts in contact box with fixed contact; Contact box is horizontal positioned (center line) again, because the contact point caloric value of dynamic and static contact is big, and contact box can't form upper and lower air convection channel; Can only rely on heat conduction to take heat out of; Radiating efficiency is low, causes temperature rise too high, jeopardizes safe operation; The contact situation of dynamic and static contact can't be observed outside cabinet, is unfavorable for safe operation; Whole handcart is moved, very heavy.Fixed metal enclosed switchgear, circuit breaker (or other switch element) does not make up with isolating switch as the independent component in switch cubicle, couples together with bus during use again.This has also brought following problem: because each element is independent, the volume that takies after in cabinet, connecting is huger; Because each element is independent, more extend in the galvanic circle that in cabinet, connects back formation, tie point is more, increased caloric value, reduced current capacity; Isolating switch adopts single armed rotary mostly, and occupation space is also very big.Because volume is big, quality is heavy, operation is difficulty very, also is unfavorable for the electric operating isolating switch.In order to reduce volume, use organic insulating material in a large number.This has just brought following problem: organic insulating material will wear out in time, especially accelerated ageing when high temperature, and dielectric strength reduces, and causes breakdown accident easily; Insulating material generally all is the non-conductor of heat, and the influence heat radiation has increased temperature rise; In order to reduce volume, bus-bar room, breaker chamber (on-load switch chamber), the cable vault does not isolate or do not adopt metal to isolate, and the former can enlarge the scope of accident impact, and the latter is unfavorable to personal safety.
The utility model content
The purpose of the utility model is to overcome shortcoming of the prior art, and a kind of novel high-pressure metal enclosed switchgear is provided.
The purpose of the utility model is to be achieved through following technical scheme.
The utility model high-pressure metal sealing switch equipment comprises main cabinet, secondary cabinet, and said main cabinet and secondary cabinet connect into a whole cabinet back-to-back and constitute a power supply unit, are provided with the feeder line circuit breaker in the said main cabinet, are provided with bypass isolating switch in the said secondary cabinet.
Wherein, the public pressure release passage of said main cabinet and secondary cabinet.
The beneficial effect of the utility model: be merged into a unit to three functional units, greatly reduced volume, floor space, also saved material consumption; Duplexure and bus all take far, in, near arrangement mode, saved branch bar, the volume that has reduced; Use the circuit breaker (on-load switch) that is combined into one with isolating switch, reduced volume significantly, reduced cost, improved current capacity; The isolating switch moving contact adopts upper and lower telescopic motion, especially when separating brake, is wrapped in the insulating sleeve, has reduced the volume that takies.In addition, when operation, insulating sleeve does not bear high voltage, guarantees safety; Reduce the use of organic insulating material, reduced the risk of ageing of insulation; Can observe the contact condition of contact, guarantee security of operation; Strengthened between the electrified body, the air distance of electrified body between over the ground, guarantee safety more; The labour-saving kind of drive makes operation very light, is more convenient for realizing electric operating isolating switch, earthed switch.
Description of drawings
Fig. 1 is the structural representation of the utility model high-pressure metal sealing switch equipment.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
As shown in Figure 1, the utility model comprises main cabinet 1,2, secondary cabinet 3,4; Said main cabinet 1,2 connects into a whole cabinet back-to-back with secondary cabinet 3,4 and constitutes a power supply unit, said main cabinet 1; Be provided with feeder line circuit breaker 5 in 2, be provided with bypass isolating switch 6 in the said secondary cabinet 3,4.
Wherein, said main cabinet 1,2 and secondary cabinet 3,4 public pressure release passages 7.
Be combined in bypass (subsequent use) return circuit unit, test loop functional unit in the cabinet, constitute a secondary cabinet; As main cabinet, dock (using the scene) more back-to-back with above-mentioned secondary cabinet, constitute a new outlet (feeding out) unit to the major loop functional unit; All by far away, in, nearly mode each duplexure and the bus bar circuit arranged, avoid conductors cross; Vertically arranged contact box; The fixed contact of center pore area ventilation hole; Use has circuit breaker, the on-load switch of isolating switch; The vertical stretching motion of upper and lower isolating switch moving contact on the circuit breaker, direct and fixed contact are connected and are constituted the galvanic circle that is close to straight line.
The shared pressure release passage of main cabinet and secondary cabinet, gas can only discharge during fault, can not pass to other compartment.
The general traction power supply mode of electric railway is: 110 (220) kV drop to 27.5kV through step-down transformer, wherein a phase (generally selecting the C phase) ground connection, two are connected to contact line in addition again, with AC and BC single phase poaer supply supply power (V/V connects method).The AT supply power mode is: the step-down transformer secondary side has two windings, exports 55kV respectively, each winding centre-point earth.The output voltage to earth of each winding is 27.5kV like this, and voltage is 55kV between the output.Two windings are respectively to uplink and downlink power supply, and output is connected on respectively on contact line and the positive feeder.Whenever keep at a certain distance away and be provided with an auto-transformer again.Because most of electric energy is through auto-transformer output, supply power voltage is 55kV, has increased power supply distance, has also improved power supply capacity.This mode generally is used for heavy haul railway and high-speed railway.
Abovely the utility model is illustrated with reference to embodiment.But those skilled in the art can understand, can also on the basis of the foregoing description, carry out multiple conversion or replacement to it.Therefore, by the protection range of the utility model of claim definition, it not only comprises the described mode of the foregoing description, has also contained various modifications, conversion and equivalent way.
Claims (2)
1. a high-pressure metal sealing switch equipment is characterized in that, comprises main cabinet (1; 2), secondary cabinet (3,4), said main cabinet (1; 2) connect into a whole cabinet back-to-back with secondary cabinet (3,4) and constitute a power supply unit, said main cabinet (1; 2) be provided with feeder line circuit breaker (5) in, be provided with bypass isolating switch (6) in the said secondary cabinet (3,4).
2. a kind of high-pressure metal sealing switch equipment according to claim 1 is characterized in that, said main cabinet (1,2) and the public pressure release passage of secondary cabinet (3,4) (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200426778U CN202524006U (en) | 2012-02-10 | 2012-02-10 | High-voltage metal-enclosed switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200426778U CN202524006U (en) | 2012-02-10 | 2012-02-10 | High-voltage metal-enclosed switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202524006U true CN202524006U (en) | 2012-11-07 |
Family
ID=47106936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200426778U Expired - Fee Related CN202524006U (en) | 2012-02-10 | 2012-02-10 | High-voltage metal-enclosed switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202524006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025811A (en) * | 2015-03-30 | 2016-10-12 | 通用电气公司 | Electrical enclosure including integral exhaust duct and method |
-
2012
- 2012-02-10 CN CN2012200426778U patent/CN202524006U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025811A (en) * | 2015-03-30 | 2016-10-12 | 通用电气公司 | Electrical enclosure including integral exhaust duct and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20210210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |