CN105513878A - Direct-current change-over switch - Google Patents
Direct-current change-over switch Download PDFInfo
- Publication number
- CN105513878A CN105513878A CN201610014494.8A CN201610014494A CN105513878A CN 105513878 A CN105513878 A CN 105513878A CN 201610014494 A CN201610014494 A CN 201610014494A CN 105513878 A CN105513878 A CN 105513878A
- Authority
- CN
- China
- Prior art keywords
- control device
- arc control
- over switch
- current change
- direct current
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts
- H01H33/121—Load break switches
- H01H33/123—Load break switches in which the auxiliary contact pivots on the main contact-arm and performs a delayed and accelerated movement
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a direct-current change-over switch. The direct-current change-over switch comprises a supporting post and a main arc extinguish chamber which is fixed on the supporting post; a shunt arc extinguish chamber is arranged in parallel with the main arc extinguish chamber. According to the direct-current change-over switch, the shunt arc extinguish chamber is arranged in parallel with the main arc extinguish chamber, the original arc extinguish chamber structure is unnecessary to change, and when a brake is closed, the main arc extinguish chamber and the shunt arc extinguish chamber share making current and rated current commonly, so that the overall through-current capability of the direct-current change-over switch is improved; the problem that the bearable through-current capability of the existing direct-current change-over switch is low is solved; the requirement on a project in a direct current field can be met.
Description
Technical field
The present invention relates to a kind of direct current change over switch.
Background technology
In DC fields equipment, the effect of direct current change over switch the DC operation electric current in HVDC (High Voltage Direct Current) transmission system is run loop line from one be transformed into another operation loop line, can ensure whether transfer process interrupts the conveying of direct current power.
In the direct current change over switch at home and abroad developed, its specified through-current capability is generally all not more than 7000A, along with the requirement of extra-high voltage project to change over switch is more and more higher, the through-current capability of existing direct current change over switch is difficult to the needs meeting DC fields engineering, very necessary to the research and development of large through-current capability change over switch.
Summary of the invention
The object of the present invention is to provide a kind of direct current change over switch improving through-current capability.
For achieving the above object, the technical scheme of direct current change over switch of the present invention is: direct current change over switch comprises pillar and is fixed on the main arc control device on pillar, and described main arc control device have been arranged in parallel shunting arc control device.
Described direct current change over switch is single-column double-fracture formula, and comprise two the described main arc control device be fixed on a described column, two main arc control device are parallel with described shunting arc control device respectively.
Described pillar is fixed with transmission device, and transmission device comprises driving connecting lever, drives connecting lever to comprise for the input arm be in transmission connection with driving mechanism and the output arm be in transmission connection with the moving contact of main arc control device.
Shunting arc control device comprise branch road fixed contact, branch road moving contact and Crankarm box, Crankarm box comprises the branch road connecting lever be in transmission connection with branch road moving contact, described branch road connecting lever and described driving connecting lever synchronous axial system, and the brachium of branch road connecting lever is equal with driving the brachium of connecting lever output arm.
Distance when cut-offfing between the dynamic and static contact of branch road that between the dynamic and static contact of shunting arc control device, distance is greater than main arc control device when cut-offfing.
Described branch road moving contact is integral type structure.
Described column is fixed on support, and described driving mechanism is fixed in support, and driving mechanism is in transmission connection with driving connecting lever by drive link, and drive link activity is assemblied in column.
Described driving mechanism is hydraulic actuating mechanism, and described transmission device is three headers.
Described main arc control device and the sleeve pipe shunted outside arc control device adopt compound insulating sleeve.
One end away from pillar of described shunting arc control device and main arc control device is connected with terminal block jointly.
The invention has the beneficial effects as follows: on main arc control device, be parallel with shunting arc control device, original arc quenching chamber structure need not be changed, when closing a floodgate, making current and rated current is jointly shared by main arc control device and shunting arc control device, the through-current capability of direct current change over switch entirety is improved, solve the problem that through-flow current capacity that existing direct current change over switch can bear is little, the needs of DC fields engineering can be met.
Further, branch road connecting lever and driving connecting lever synchronous axial system, and the brachium of branch road connecting lever is equal with driving the brachium of connecting lever output arm, can ensure that the moving contact shunting arc control device and main arc control device is synchronized with the movement.Distance when cut-offfing between the branch road dynamic/static contact that when making to cut-off between the dynamic/static contact of shunting arc control device, distance is greater than main arc control device; main arc control device are closed a floodgate prior to shunting arc control device, after in shunting arc control device separating brake; because main arc control device self have arcing ability, achieve the protection to shunting arc control device.
Further, compound insulating sleeve is adopted to replace traditional porcelain knob sleeve pipe, have lightweight, be convenient to install, advantage that anti-pollution characteristic is good and non-maintaining, use the loss that can reduce and prevent to produce because of pollution flashover power-off and bring in awful weather, filthy serious area, improve power supply reliability.
Accompanying drawing explanation
Fig. 1 is the structural representation of direct current change over switch of the present invention;
Fig. 2 is the vertical view of arc control device assembly in Fig. 1;
Fig. 3 is the structural representation shunting arc control device in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
The specific embodiment of direct current change over switch of the present invention, as shown in Figure 1 to Figure 3, direct current change over switch comprises support 5 and erects the column 3 on support 5, support 5 internal fixtion has the driving mechanism 4 be positioned at below column 3, the upper end of column 3 is fixed with arc extinguishing assembly, and arc extinguishing assembly comprises main arc control device 1 and at main arc control device 1 two ends and the shunting arc control device 2 connect.Three headers 6 are provided with between the upper end of pillar 3 and main arc control device 1, three headers 6 comprise driving connecting lever, connecting lever is driven to comprise input arm and output arm, driving mechanism 4 is in transmission connection by drive link and input arm, drive link activity is assemblied in column 3, and the moving contact of output arm and main arc control device 1 is in transmission connection.Shunting arc control device 2 are connected with terminal block 7 jointly with one end away from pillar of main arc control device 1.Shunting arc control device 2 comprise branch road fixed contact 21, branch road moving contact 22, Crankarm box 23 and sleeve pipe 24, Crankarm box 23 comprises the branch road connecting lever be in transmission connection with branch road moving contact 22, branch road connecting lever realizes synchronous axial system with driving connecting lever by the splined shaft in three headers 6, and the brachium of branch road connecting lever is equal with driving the brachium of connecting lever output arm, branch road connecting lever is identical with driving the rotational angle of connecting lever, makes the moving contact of main arc control device realize being synchronized with the movement with the branch road moving contact of shunting arc control device.Distance when cut-offfing between the dynamic and static contact that between the dynamic and static contact of branch road of shunting arc control device 2, distance is greater than main arc control device 1 when cut-offfing; when making to close a floodgate; the time combined floodgate that the delayed main arc control device one section of shunting arc control device are extremely short; when direct current change over switch disconnects; the delayed shunting arc control device of main arc control device disconnect; because main arc control device self have arcing ability and super-high-current operating time extremely short and unlikely damage separately, protect shunting arc control device.
In the present embodiment, direct current change over switch is single-column double-fracture formula, comprises the main arc control device of two of being positioned on a column 31, two main arc control device 1 and is parallel with shunting arc control device 2 respectively.In the present embodiment, the sleeve pipe of the outside of column 3, main arc control device 1 and shunting arc control device 2 all adopts compound insulating sleeve, concrete employing silica gel synthetic insulator, composite insulator is the insulator of New Insulation Structure, have that mechanical strength is high, durability against pollution is strong, volume is little, lightweight, not easily broken, be convenient to the advantages such as packaging and transport, use the loss that can reduce and prevent to produce because of pollution flashover power-off and bring in awful weather, filthy serious area, improve power supply reliability.Driving mechanism 4 is hydraulic actuating mechanism, has the feature without pipeline, non-maintaining, ne-leakage, improves reliability, extend maintenance period.The branch road moving contact of shunting arc control device 2 is integral type structural design, not only reduces contact resistance, also greatly reduces contact heat resistance.Pillar 3 can meet insulation against ground and shockproof requirements, does not need to arrange inspection platform.
Direct current change over switch compact overall structure of the present invention, significantly can improve through-current capability, makes product have advantage on lightweight, small size performance.
In other embodiments, according to the difference of direct current change over switch concrete structure, three headers can also replace with the transmission device of other corresponding constructions.
Claims (10)
1. direct current change over switch, comprises pillar and is fixed on the main arc control device on pillar, it is characterized in that: described main arc control device have been arranged in parallel shunting arc control device.
2. direct current change over switch according to claim 1, is characterized in that: described direct current change over switch is single-column double-fracture formula, and comprise two the described main arc control device be fixed on a described column, two main arc control device are parallel with described shunting arc control device respectively.
3. direct current change over switch according to claim 1 and 2, it is characterized in that: described pillar is fixed with transmission device, transmission device comprises driving connecting lever, drives connecting lever to comprise for the input arm be in transmission connection with driving mechanism and the output arm be in transmission connection with the moving contact of main arc control device.
4. direct current change over switch according to claim 3, it is characterized in that: shunting arc control device comprise branch road fixed contact, branch road moving contact and Crankarm box, Crankarm box comprises the branch road connecting lever be in transmission connection with branch road moving contact, described branch road connecting lever and described driving connecting lever synchronous axial system, and the brachium of branch road connecting lever is equal with driving the brachium of connecting lever output arm.
5. direct current change over switch according to claim 4, is characterized in that: distance when cut-offfing between the dynamic and static contact of branch road that between the dynamic and static contact of shunting arc control device, distance is greater than main arc control device when cut-offfing.
6. direct current change over switch according to claim 4, is characterized in that: described branch road moving contact is integral type structure.
7. direct current change over switch according to claim 3, it is characterized in that: described column is fixed on support, described driving mechanism is fixed in support, and driving mechanism is in transmission connection with driving connecting lever by drive link, and drive link activity is assemblied in column.
8. direct current change over switch according to claim 3, is characterized in that: described driving mechanism is hydraulic actuating mechanism, and described transmission device is three headers.
9. direct current change over switch according to claim 1 and 2, is characterized in that: described main arc control device and the sleeve pipe shunted outside arc control device adopt compound insulating sleeve.
10. direct current change over switch according to claim 1 and 2, is characterized in that: one end away from pillar of described shunting arc control device and main arc control device is connected with terminal block jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014494.8A CN105513878A (en) | 2016-01-11 | 2016-01-11 | Direct-current change-over switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610014494.8A CN105513878A (en) | 2016-01-11 | 2016-01-11 | Direct-current change-over switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105513878A true CN105513878A (en) | 2016-04-20 |
Family
ID=55721780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610014494.8A Pending CN105513878A (en) | 2016-01-11 | 2016-01-11 | Direct-current change-over switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105513878A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190490A1 (en) * | 2016-05-05 | 2017-11-09 | 国家电网公司 | High-voltage switch and circuit breaker unit thereof |
| CN112509857A (en) * | 2020-09-25 | 2021-03-16 | 平高集团有限公司 | Combined high-voltage direct-current bypass switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433220A (en) * | 1981-04-22 | 1984-02-21 | Sprecher & Schuh Ag | High-voltage circuit breaker |
| CN201112255Y (en) * | 2007-08-22 | 2008-09-10 | 新东北电气(沈阳)高压开关有限公司 | 550KV porcelain column type hexafluoride sulphur circuit breaker |
| CN102568910A (en) * | 2011-12-20 | 2012-07-11 | 平高集团有限公司 | 1100kV extra-high voltage series complement bypass switch |
| CN203910668U (en) * | 2014-07-02 | 2014-10-29 | 中国西电电气股份有限公司 | 1100kV extra-high voltage column type circuit breaker |
-
2016
- 2016-01-11 CN CN201610014494.8A patent/CN105513878A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4433220A (en) * | 1981-04-22 | 1984-02-21 | Sprecher & Schuh Ag | High-voltage circuit breaker |
| CN201112255Y (en) * | 2007-08-22 | 2008-09-10 | 新东北电气(沈阳)高压开关有限公司 | 550KV porcelain column type hexafluoride sulphur circuit breaker |
| CN102568910A (en) * | 2011-12-20 | 2012-07-11 | 平高集团有限公司 | 1100kV extra-high voltage series complement bypass switch |
| CN203910668U (en) * | 2014-07-02 | 2014-10-29 | 中国西电电气股份有限公司 | 1100kV extra-high voltage column type circuit breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017190490A1 (en) * | 2016-05-05 | 2017-11-09 | 国家电网公司 | High-voltage switch and circuit breaker unit thereof |
| CN112509857A (en) * | 2020-09-25 | 2021-03-16 | 平高集团有限公司 | Combined high-voltage direct-current bypass switch |
| CN112509857B (en) * | 2020-09-25 | 2023-04-07 | 平高集团有限公司 | Combined high-voltage direct-current bypass switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101964271A (en) | High-voltage switch transfer current device | |
| CN105513878A (en) | Direct-current change-over switch | |
| CN202454479U (en) | 1100kV extra-high-voltage series-compensation by-pass switch | |
| CN203553032U (en) | Outdoor vacuum circuit breaker used for electrified railway traction system | |
| CN203536329U (en) | Superspeed mechanical switch | |
| CN103578877B (en) | Ultrahigh speed mechanical switch | |
| CN104134567B (en) | Isolator breaking device and use the isolator of this breaking device | |
| CN202662524U (en) | Extra-high voltage grounding switch using SF6 arc extinguish chamber for inducing current | |
| CN205069506U (en) | Vacuum permanent magnetism circuit breaker | |
| CN206685298U (en) | A kind of earthing for having making capability | |
| CN205004240U (en) | High voltage circuit breaker's insulation system | |
| CN201655642U (en) | Interlocking device for double-column level fracture isolating switch | |
| CN203859051U (en) | Three-phase directly operated type disconnecting switch | |
| CN204117939U (en) | Ice-melt switch with ground | |
| CN204390975U (en) | A kind of switching off/on device of high-tension vacuum switch equipment | |
| CN203966945U (en) | Rated current 5000A ultrahigh-voltage alternating-current circuit breaker | |
| CN203312138U (en) | Magnetic quenching SF6 three-position load switch | |
| CN203910644U (en) | Novel vacuum circuit breaker | |
| CN102157283A (en) | Control circuit for transfer switch | |
| CN201812733U (en) | Fully-shielded touching vacuum circuit breaker used on outdoor column | |
| CN2909495Y (en) | Double-break combined column superhigh voltage multi-speed breaking circuit breaker | |
| CN204189690U (en) | Isolating switch both arms drag link transmission mechanism | |
| CN204102795U (en) | Outdoor ac high-voltage vacuum circuit breaker | |
| CN204130434U (en) | A kind of high-voltage alternating-current vacuum circuit breaker on outdoor column | |
| CN204680605U (en) | A kind of high reliability outdoor vacuum circuit breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |