CN2224461Y - Porcelain-column type sulfur hexafluoride high-voltage circuit breaker - Google Patents
Porcelain-column type sulfur hexafluoride high-voltage circuit breaker Download PDFInfo
- Publication number
- CN2224461Y CN2224461Y CN 94246345 CN94246345U CN2224461Y CN 2224461 Y CN2224461 Y CN 2224461Y CN 94246345 CN94246345 CN 94246345 CN 94246345 U CN94246345 U CN 94246345U CN 2224461 Y CN2224461 Y CN 2224461Y
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- porcelain
- arc
- column type
- long
- 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 - Lifetime
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- Circuit Breakers (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model relates to a circuit breaker, which is used in high-voltage electrical apparatus industry and has control and protective functions in power transmission and transformation lines. At present, 220KV high-voltage circuit breakers adopt double-break ports and porcelain-column type circuit breakers with parallel capacitors; aiming at the situation that the porcelain-column type circuit breaker with parallel capacitors has small opening and breaking capacity and short electric lifetime of arc-extinguishing chambers, the utility model designs a porcelain-column type circuit breaker without parallel capacitors under the condition of 220KV single-break port. The arc-extinguishing chamber of the circuit breaker designed by the utility model adopts a single-break port which is simpler than the double-break structure. The utility model has changeable arc-extinguishing distance and double-blowing structure, and increases the opening and breaking capacity and the electric reliability.
Description
The utility model is a kind of circuit breaker that is used for rising at power transmission and transformation line on the High-Voltage Electrical Appliances industry control and protective effect.
Some 220KV primary cut-outs adopt the double break mouth at present, the porcelain knob breaker of band shunt capacitor, it is little that this circuit breaker cut-offs capacity, technical-economic index is low, and the arc control device electrical endurance is shorter, designed at above-mentioned situation the utility model a kind of under 220KV single break condition, the porcelain knob breaker of no shunt capacitance.
The purpose of this utility model just provides a kind of simple in structure, and connecting-disconnecting function is strong, the circuit breaker that electrical endurance is long.
Design of the present utility model is; Each single-pole circuit breaker is by the air pressing type arc control device, and compositions such as support insulator and mechanism case, arc control device adopt the single break structure to place the mechanism case top, integral body is " 1 " type and arranges, whenever match a pneumatic operating mechanism, can carry out one pole and do, can realize three utmost point combined operations by electric connection again.Electrical control, guard signal dress and SF6 gas density relay and air pressure switch all place in the mechanism case, and arc control device communicate with the insulator air chamber, are filled with the SF6 gas of rated pressure. link to each other by valve, gas piping and 6 Pressure gauges.Each mechanism case is equipped with a gas tank outward, air compressor of every product adapted is to keep the pressure of gas tank, three-phase is communicated with by tracheae, and sub-switching operation relies on the air that contracts to carry out, and the energy that closing operation then relies on switching-in spring to store in the separating brake process carries out.On the arc control device galvanic circle, main contact separates fully with arcing contact, make copper tungsten contact and insulation spout scaling loss amount little, electrical endurance is long, and orifice design is to utilize the blockage effect of peak current to venturi, long venturi, long upstream are apart from structure, and having utilized the rapid blow-out of turbulence effect that connecting-disconnecting function is strengthened, main contact and middle fingertip are the self-reliance fingertip, utilize the strain of contact material itself, guarantee the contact pressure of every fingertip, make it stress equalization.
The arc control device of the designed circuit breaker of the utility model adopt single break simpler than double break mouth structure, become the blow-out distance, and two blowing structures have increased and cut-off capacity and electric reliability.
Below in conjunction with accompanying drawing the utility model is done further and to be specified:
Accompanying drawing 1 is a single-stage circuit breaker bulk shape schematic diagram
Accompanying drawing 2 is the arc extinguishing unit schematic diagram of circuit breaker
In the accompanying drawing 1: (1) arc extinguishing unit, (2) support insulator, (3) mechanism case, (4) air gas tank
In the accompanying drawing 2: (3) upper connecting terminal, (4) quiet arc contact, (5) quiet main contact, (6) spout,
(7) moving main contact, (8) moving arcing contact, (9) air cylinder, (10) piston rod, (11)
Piston, (12), middle contact, (13) lower connecting terminal, (14) insulated tension pole,
(15) spring, (16) sealing gasket, (17) movable sealing, (18) valve.
Power supply turnover line is connected on arc extinguishing unit (1) upper connecting terminal (3) and the lower connecting terminal (13) during operate as normal, during combined floodgate, electric current is from last terminals (3) process quiet main contact (5), moving main contact (7), air cylinder (9), middle contact (12) and supporter flow on the lower connecting terminal (13), during sub-switching operation, mechanism case (3) inner control valve is opened, compressed air enters cylinder from empty gas tank (4), piston moves downward drive insulated tension pole (14) and moves downward, SF6 gas between air cylinder (9) and the piston (11) is compressed rapidly, when quiet arc contact (4) produces electric arc with moving arcing contact (8) when separating, in air cylinder (9), set up enough SF6 gas pressures, thereby powerful SF6 air-flow blows out from spout (6), when current over-zero moment, electric arc is extinguished rapidly.Because arc control device adopt single pressure type, become the blow-out distance, two blowing structures.Its characteristics are of a size of 30～50mm for long venturi, and long upstream distance is of a size of 15～20mm.Two spouts are all in the motion side, and promptly there is the arc blow-out hole at moving arcing contact (8) center.Arcing contact is subjected to brushing of SF6 gas once an end arc root that separates electric arc, and the spout that after this insulate is open, and the other end of electric arc is also brushed, and the flow area of insulation spout becomes greatly gradually, has obtained bigger arc-rupturing capacity.The catchment design of insulation spout is more unobstructed than existing product.Help the recovery of arc gap dielectric strength, be difficult for taking place bang and wear.The design of insulation nozzle configuration has utilized turbulence effect: at spout throat straightway fluting, turbulization during arc blow-out, turbulent flow makes the electric arc distortion and prolongs, make free gas sharply cool off, the peak value that cut-offs and tolerate recovery voltage all is beneficial to, the design of jet size has fully taken into account cut-offs short-circuit of terminals fault, cut-offs close-in fault and the different needs that cut-offs little electric capacity, small inductor electric current.Dynamic and static arcing contact adopts integral sintered method, and it is 1～10% that spout adopts the ptfe composite material to contain Ae203.
The air cylinder diameter designs greatlyyer, is of a size of: 150～180mm makes sufficient SF6 gas in the cylinder, when reclosing cut-offs, under the less metal short circuit time.Connecting-disconnecting function when having guaranteed separating brake for the second time.Larger-diameter air cylinder is designed to the part of galvanic circle.Increased conduction and area of dissipation, made simple in structurely, its rated current can reach 3150A or bigger.
The design of contact: main contact and middle fingertip are the self-reliance fingertip, utilize the strain of contact material itself, guarantee the contact pressure of every fingertip, make it stress equalization.Adopted the shape fingertip of relying on oneself, simplified structure dwindles radial dimension, and radial dimension is 170～220mm.The arc control device number of spare parts is 30% of a conventional design, and reliability improves greatly.
In support insulator (2) bottom dynamic sealing assembly is installed, it is by the sealing of length of spring compressed sealing gasket, has pressure and mends the effect of tasting, to guarantee the long term seal of gas.When closing coil obtained switching signal, piston was driven upwards by switching-in spring, and insulated tension pole (15) moves upward, reverse motions when all moving parts and sub-switching operation, and fresh SF6 gas enters air cylinder, recovers normal combined floodgate service position again.
Claims (4)
- A kind of by the air pressing type arc control device; support insulator; the porcelain knob primary cut-out of compositions such as mechanism case is characterized by: circuit breaker places the complete machine top for the single break structure; whenever match a pneumatic operating mechanism; electrical control mechanism; guard signal device etc. is contained in the mechanism case; arc control device communicate with the support insulator air chamber; be filled with the SF6 gas of rated pressure; on the arc control device galvanic circle; main contact separates fully with arcing contact; make copper tungsten contact and the little electrical endurance of insulation spout scaling loss amount long; orifice design is long venturi; long upstream is apart from structure; the air cylinder diameter is: 150～180mm makes sufficient SF6 gas in the cylinder, increased conduction and area of dissipation simultaneously.
- 2, according to the porcelain knob primary cut-out described in the claim 1, its feature also is: the long venturi of orifice design is of a size of 30～50mm, and long upstream is apart from being of a size of 15～20mm, and two spouts are all in the motion side.
- 3, according to the porcelain knob primary cut-out described in the claim 1, its feature also is: the self-reliance fingertip is designed to radial dimension 170～220mm.
- 4, according to the porcelain knob primary cut-out described in the claim 1, its feature also is: the support insulator bottom is equipped with the dynamic sealing assembly of length of spring compressed sealing gasket, has pressure and mends the effect of tasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246345 CN2224461Y (en) | 1994-12-28 | 1994-12-28 | Porcelain-column type sulfur hexafluoride high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94246345 CN2224461Y (en) | 1994-12-28 | 1994-12-28 | Porcelain-column type sulfur hexafluoride high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2224461Y true CN2224461Y (en) | 1996-04-10 |
Family
ID=33851859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94246345 Expired - Lifetime CN2224461Y (en) | 1994-12-28 | 1994-12-28 | Porcelain-column type sulfur hexafluoride high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2224461Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825894A (en) * | 2010-04-30 | 2010-09-08 | 北京航空航天大学 | SF6 high-voltage circuit breaker state intelligent monitoring and health management system |
| CN101599391B (en) * | 2009-07-13 | 2013-02-27 | 西安森源配电自动化设备有限公司 | Novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
| CN105244222A (en) * | 2015-10-21 | 2016-01-13 | 成都迅德科技有限公司 | Porcelain knob-type circuit breaker |
-
1994
- 1994-12-28 CN CN 94246345 patent/CN2224461Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599391B (en) * | 2009-07-13 | 2013-02-27 | 西安森源配电自动化设备有限公司 | Novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber |
| CN101825894A (en) * | 2010-04-30 | 2010-09-08 | 北京航空航天大学 | SF6 high-voltage circuit breaker state intelligent monitoring and health management system |
| CN101825894B (en) * | 2010-04-30 | 2012-07-18 | 北京航空航天大学 | SF6 high-voltage circuit breaker state intelligent monitoring and health management system |
| CN105244222A (en) * | 2015-10-21 | 2016-01-13 | 成都迅德科技有限公司 | Porcelain knob-type circuit breaker |
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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: XI AN XIKAI HIGH VOLTAGE ELECTRIC CO., LTD. Free format text: FORMER NAME OR ADDRESS: XI AN HIGH-TENSION SWITCH FACTORY |
|
| CP03 | Change of name, title or address |
Address after: 710068 Xi'an City High Road No. 33 Patentee after: Xi'an Xikai High-Voltage Electric Co., Ltd. Address before: 710077 No. 29, Daqing Road, Xi'an Patentee before: Xi-an High-Voltage Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Lilin Document name: Notification of Termination of Patent Right |