CN201638737U - Single-pole two-step action-type switchable earthing switch with large conduction current - Google Patents
Single-pole two-step action-type switchable earthing switch with large conduction current Download PDFInfo
- Publication number
- CN201638737U CN201638737U CN2010201696205U CN201020169620U CN201638737U CN 201638737 U CN201638737 U CN 201638737U CN 2010201696205 U CN2010201696205 U CN 2010201696205U CN 201020169620 U CN201020169620 U CN 201020169620U CN 201638737 U CN201638737 U CN 201638737U
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- ground connection
- cutter pipe
- base
- contact rod
- connection cutter
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- Expired - Fee Related
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Abstract
The utility model discloses a single-pole two-step action-type switchable earthing switch with large conduction current, comprising three single poles which have same structures and realize synchronous operation through electric linkage; and each single pole comprises an earthing main loop and an auxiliary loop. The single-pole two-step action-type switchable earthing switch with the large conduction current has simple and reasonable structure, small switching-on impact, stable and reliable action, good electrical performance, convenience in operation, safety and duability.
Description
Technical field
The utility model relates to the earthed switch in a kind of 363kV high-voltage electric power system, but the big induced current earthed switch of a kind of specifically single-column two-step action type folding.
Background technology
Along with the development of domestic power technology, the increase of net capacity is taken up an area of in order to reduce the transmission of electricity corridor, adopts same tower double back transmission line to become the development trend of China's trunk rack.Same tower double back transmission line is when one backhauls another time of row maintenance, because Electrostatic Coupling and electromagnetic coupled effect between two back transmission lines, in the maintenance loop, will produce induced voltage and induced current, operating personnel's personal safety and the equipment that is overhauling will be worked the mischief.For guaranteeing reliability of operation and fail safe, the earthed switch of earthed switch that uses on the circuit and isolating switch attaching must have the ability of opening and closing induction current, and when maintenance is in order to ensure maintainer's safety, high-voltage electrical equipments such as high voltage bus, circuit breaker, instrument transformer, isolating switch need carry out reliable ground, requirement to earthed switch is more rigorous, problems such as divide-shut brake is unreliable, impacts greatly, and structural design is unreasonable become the hidden danger that influences the earthed switch safe handling.
Summary of the invention
For solving the technical problem of above-mentioned existence, but the utility model provides the folding of a kind of single-column two-step action type big induced current earthed switch, has good looking appearance, simple and reasonable, electric property is stable, stable action is reliable, close a floodgate and impact little, characteristics such as Corrosion Protection good, long service life.
For achieving the above object, the technical solution adopted in the utility model is as follows:
Comprise that structure is identical, three one poles by electric-linked realization simultaneous operation, each one pole is made up of ground connection major loop and subsidiary loop, described ground connection major loop includes the ground connection fixed contact, post insulator, ground connection cutter pipe, base, electric operating mechanism, steel bracket and weight, steel bracket is fixed in ground, motor operating mechanism and base interconnect and are separately positioned on a side and the top of steel bracket, base is provided with post insulator, the top of post insulator is provided with ground connection fixed contact and grading ring, ground connection cutter pipe is arranged on the base, the end of ground connection cutter pipe is provided with weight and slide block, ground connection cutter pipe top is provided with the ground connection moving contact, is connected by soft conductive strips between ground connection cutter pipe and the base; Described subsidiary loop includes vacuum interrupter, moving arcing contact rod, quiet arc contact rod and cable, quiet arc contact rod is arranged on the top of post insulator, vacuum interrupter is arranged on the base, the end that cable one end is connected on the binding post of vacuum interrupter, the other end is connected the moving arcing contact rod, the moving arcing contact rod is fixed on the ground connection cutter pipe by supporting insulator.
The utility model is made up of major loop and subsidiary loop, auxiliary contact closes a floodgate earlier during combined floodgate, and main contact closes a floodgate again behind the arc control device combined floodgate arc extinguishing, main contact elder generation separating brake during separating brake, auxiliary contact separating brake again behind the arc control device separating brake arc extinguishing, thus the ability of earthed switch opening and closing induction current improved greatly.
Described moving arcing contact rod all adopts stainless steel bar with quiet arc contact rod, compresses reliably, and through-current capability is strong.
Described ground connection cutter pipe adopts circular aluminum pipe, and area of dissipation is big.
The employing copper material that is flexible coupling between described ground connection cutter pipe and the base has improved electric electric conductivity.
Described ground connection cutter pipe end is provided with weight, the operating physical force during the balance divide-shut brake.
In sum, the on-off large parameter induction current outdoor high-voltage AC grounding switch that the utility model provides, simple and reasonable, divide-shut brake impact little, stable action reliable, excellent electrical properties, easy to operate, safety durable.
Description of drawings
Main TV structure schematic diagram when Fig. 1 closes a floodgate for the utility model;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
Main TV structure schematic diagram when Fig. 3 is the utility model separating brake;
Fig. 4 is the left TV structure schematic diagram of Fig. 3.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, but the big induced current earthed switch of single-column two-step action type folding, comprise three one poles that form three-phase, each one pole includes ground connection fixed contact 1, grading ring 2, post insulator 3, ground connection cutter pipe 4, base 5, motor operating mechanism 6, steel bracket 7, weight 8, vacuum interrupter 9, cable 10, supporting insulator 11, moving arcing contact rod 12, quiet arc contact rod 13.Steel bracket 7 is installed on the basis, ground, ground connection fixed contact 1 is arranged on the post insulator 3, post insulator 3 is installed on the base 5, ground connection fixed contact 1 and grading ring 2 are installed on the post insulator 3, ground connection cutter pipe 4, weight 8 are installed on the base 5, and electric motor operating mechanism 6 is installed on the steel bracket 7, and link to each other with ground connection cutter pipe operation connecting lever by joint, vertical links, moment is passed to cross-arm stainless steel rotating shaft 14 by connecting lever, thereby make ground connection cutter pipe 4 carry out breaking-closing operating.Quiet arc contact rod 13 is installed on post insulator 3 tops, moving arcing contact rod 12 is connected on the ground connection cutter pipe 4 by supporting insulator 3, arcing contact rod 12 all adopts stainless steel bar with quiet arc contact rod 13, ground connection cutter pipe 4 adopts circular aluminum pipe, the 15 employing copper materials that are flexible coupling between described ground connection cutter pipe 4 and the base 5.
Motor operating mechanism 6 passed through joint when the utility model closed a floodgate, vertical drive link, base four connecting rods drive cross-arm stainless steel rotating shaft rotation 14, and then drive ground connection cutter pipe 4 rotates in perpendicular earlier, simultaneously moving arcing contact rod 12 rotates in perpendicular with ground connection cutter pipe 4, moving arcing contact rod 12 is with after quiet arc contact excellent 13 contacts, reverse mutually and compress by reversing spring on the supporting insulator 11, driving the connecting lever connecting rod by 14 rotations of cross-arm stainless steel shaft then closes a floodgate vacuum interrupter 9, induced current is closed in the pass, carry out rectilinear motion straight up behind the half-twist, thereby moving contact 16 is inserted in the fixed contact 1, continue induced current and carry, finish the switch feed motion by major loop.
The sub-switching operation process in contrast, motor operating mechanism 6 passes through joint, vertical drive link, base four connecting rods drive cross-arm stainless steel rotating shaft 14 reverse rotations, thereby make ground connection cutter pipe 4 elder generations rectilinear motion straight down, make moving contact 16 withdraw from fixed contact 1, in perpendicular, move in a circle again, cross-arm stainless steel rotating shaft 14 drives vacuum interrupter 9 separating brakes, cut-off induced current, then moving arcing contact rod 12 separates with quiet arc contact rod 13, initial tension of spring resets moving arcing contact rod 12 and moves downward with ground connection moving contact 16, get back to horizontal separating brake position behind the half-twist, form apparent vertical fracture with the ground connection fixed contact 1 of top.
Claims (5)
1. but the big induced current earthed switch of single-column two-step action type folding, comprise that structure is identical, three one poles by electric-linked realization simultaneous operation, it is characterized in that, each one pole is made up of ground connection major loop and subsidiary loop, described ground connection major loop includes ground connection fixed contact (1), post insulator (3), ground connection cutter pipe (4), base (5), electric operating mechanism (6), steel bracket (7) and slide block (16), steel bracket (7) is fixed in ground, motor operating mechanism (6) and base (5) interconnect and are separately positioned on a side and the top of steel bracket (7), base (5) is provided with post insulator (3), the top of post insulator (3) is provided with ground connection fixed contact (1) and grading ring (2), ground connection cutter pipe (4) is arranged on the base (5), the end of ground connection cutter pipe (4) is provided with weight (8) and slide block (16), ground connection cutter pipe (4) top is provided with ground connection moving contact (16), is connected by soft conductive strips (15) between ground connection cutter pipe (4) and the base (5); Described subsidiary loop includes vacuum interrupter (9), moving arcing contact rod (12), quiet arc contact rod (13) and cable (10), quiet arc contact rod (13) is arranged on the top of post insulator (3), vacuum interrupter (9) is arranged on the base (5), the end that cable (10) one ends are connected on the binding post of vacuum interrupter (9), the other end is connected moving arcing contact rod (12), moving arcing contact rod (12) is fixed on the ground connection cutter pipe (4) by supporting insulator (11).
2. but the big induced current earthed switch of single-column two-step action type according to claim 1 folding is characterized in that, described moving arcing contact rod (12) all adopts stainless steel bar with quiet arc contact rod (13).
3. but the big induced current earthed switch of single-column two-step action type according to claim 1 folding is characterized in that described ground connection cutter pipe (4) adopts circular aluminum pipe.
4. but the big induced current earthed switch of single-column two-step action type according to claim 1 folding is characterized in that, be flexible coupling (15) between described ground connection cutter pipe (4) and the base (5) adopt copper material.
5. but the big induced current earthed switch of single-column two-step action type according to claim 1 folding is characterized in that, described ground connection cutter pipe (4) end is provided with weight (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201696205U CN201638737U (en) | 2010-04-21 | 2010-04-21 | Single-pole two-step action-type switchable earthing switch with large conduction current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201696205U CN201638737U (en) | 2010-04-21 | 2010-04-21 | Single-pole two-step action-type switchable earthing switch with large conduction current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201638737U true CN201638737U (en) | 2010-11-17 |
Family
ID=43083242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201696205U Expired - Fee Related CN201638737U (en) | 2010-04-21 | 2010-04-21 | Single-pole two-step action-type switchable earthing switch with large conduction current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201638737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124104A (en) * | 2013-04-25 | 2014-10-29 | 国家电网公司 | Earthing switch with capability of switching induced current |
-
2010
- 2010-04-21 CN CN2010201696205U patent/CN201638737U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124104A (en) * | 2013-04-25 | 2014-10-29 | 国家电网公司 | Earthing switch with capability of switching induced current |
| CN104124104B (en) * | 2013-04-25 | 2016-08-03 | 国家电网公司 | A kind of earthed switch with opening and closing induction current ability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130421 |