CN2836218Y - High-voltage AC vacuum breaker - Google Patents
High-voltage AC vacuum breaker Download PDFInfo
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- CN2836218Y CN2836218Y CN 200520113666 CN200520113666U CN2836218Y CN 2836218 Y CN2836218 Y CN 2836218Y CN 200520113666 CN200520113666 CN 200520113666 CN 200520113666 U CN200520113666 U CN 200520113666U CN 2836218 Y CN2836218 Y CN 2836218Y
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- circuit breaker
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- energy storage
- electric part
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Abstract
The utility model relates to a high-voltage AC vacuum circuit breaker, wherein the one-time electric part of the circuit breaker, an operating mechanism and an installing bottom frame are integrally connected together, and the one-time electric part is composed of an insulating cylinder, an upper wire outlet arm, a lower wire outlet arm, a vacuum arc-extinguishing chamber (14), a flexible connector and an insulating pull rod (19). The vacuum arc-extinguishing chamber is accommodated in the insulating cylinder, the upper and the lower wire outlet arms are supported in the vacuum arc-extinguishing chamber, and the flexible connector is connected with the vacuum arc-extinguishing chamber and the insulating pull rod. The operating mechanism is composed of a bracket, an energy storing system, a transmission system, a device for dividing and closing a switch and keeping release and a secondary control system, and the bottom frame is connected with the electric part and the operating mechanism and supported on a working position. The circuit breaker has the advantages of high reliability, long service life, small size, light weight, etc.
Description
Technical field
The utility model relates to a kind of HVAC vacuum circuit breaker, relates in particular to employed circuit breaker in 40.5kV, the three-phase alternating current 50Hz electric power system.
Background technology
Development along with Chinese national economy, enterprise constantly increases the capacity that distribution system requires, the AC high voltage vacuum breaker of rated voltage 40.5kV can not satisfy market mostly fully this series products has been dwindled at volume requirement at present, the requirement that performance improves as far as possible.Thereby restricted the development of my the corresponding complete sets of products of company.Through many-sided market survey and understanding, the domestic market is reasonable to Mechanical Builds, operating mechanism is simple and reliable, and very big with the bigger AC high voltage vacuum breaker product consumption of the strong rated current of complete set of equipments matching and specified short circuit interruption capacity.Therefore, we are by the requirement of DL402-1999 " 12kV～40.5kV HVAC vacuum circuit breaker order technical conditions " and GB1984-2003 " HVAC vacuum circuit breaker ", development and Design ZN85A-40.5/T1600-31.5kA AC high voltage vacuum breaker (hereinafter to be referred as product).The comprehensive external contemporary like product advanced technology of this product can adapt to the requirement of current electrical equipment industry to big capacity, highly reliable controller switching equipment, and domestic enterprise helps revitalizing national industry in the face of the situation of foreign vendor's fierce market competition.
Product is applicable to that rated voltage exchanges 40.5kV, frequency 50Hz, and rated current 1600A is in the indoor high-voltage electric power system of rated short circuit drop-out current 31.5kA.Be applicable to places such as industrial and mining enterprises, residential quarters, skyscraper, school, park, and be applicable to the place of frequent operation.
Summary of the invention
The purpose of this utility model provides a kind of operating mechanism and circuit breaker is realized incorporate circuit breaker;
The purpose of this utility model provides a kind of Mechanical Reliability height, the little lightweight circuit breaker of long service life and volume;
The purpose of this utility model provides an a kind of electric part pressure injection in insulating cylinder, can prevent the circuit breaker of the generation and the expansion of an accident.
A kind of HVAC vacuum circuit breaker, wherein circuit breaker electric part, operating mechanism and an installation underframe are linked to be an integral body; Electric part by insulating cylinder, up and down outlet arm, vacuum interrupter 14, be flexible coupling and insulated tension pole 19 is formed, hold vacuum interrupter in the insulating cylinder and also support outlet arm up and down, being flexible coupling connects vacuum interrupter and insulated tension pole; Operating mechanism keeps releasing device and secondary control system to form by support, energy-storage system, drive system, divide-shut brake; Underframe connects electric part and operating mechanism and it is supported on the service position.
Arc control device have movable current-carrying part and connect with following outlet arm by being flexible coupling, but insulated tension pole links to each other with moving conductive rod.
Operating mechanism adopts the clamping plate type structure, and the energy-storage system of mechanism is arranged on the left plate inboard; During drive system and mechanical interlocking are in, between right plate.
Energy-storage system comprises energy storage motor, secondary gear reducer, cam, turbine, ratchet, switching-in spring and travel switch, energy storage motor drives cam rotation through secondary gear reducer, turbine drives rocker makes ratchet rotate, thereby makes the connecting lever compression switching-in spring on the energy storage axle also cut off energy storage motor simultaneously.
This circuit breaker has the following advantages:
This product adopts operating mechanism and circuit breaker integral structure;
Operating mechanism and circuit breaker all adopt domestic and international advanced technology design, make, and product is the Mechanical Reliability height not only, long service life, and small product size is little, and in light weight, be the first-selected circuit breaker of 40.5kV miniaturization switch cubicle.
One time electric part is contained in the insulating cylinder that adopts the advanced technologies pressure injection, and insulation property are reliable, and can effectively prevent the generation and the expansion of an accident, influence operating mechanism and secondary electric part.
Description of drawings
Figure 1 shows that the circuit breaker front view;
Figure 2 shows that circuit breaker internal structure end view;
Figure 3 shows that circuit breaker internal structure letter view;
Figure 4 shows that circuit breaker electrical structure schematic diagram.
Specific embodiment
1-4 describes the utility model with reference to the accompanying drawings below:
Circuit breaker adopts monolithic construction, is integrated on the handcart frame 26 that has handcart wheel 27 and directive wheel 9, and handcart frame 26 is provided with and advances arm-tie and handcart panel 8.In the place ahead of handcart panel 8 famous brand 1 is arranged, switch knob 2, manually energy storage axis hole 3, counter 4, opening button 5, manual energy storage axis hole 6 and the indication 7 that divides, closes a floodgate.
Shown in Fig. 2-4, the primary structure of circuit breaker adopts the monolithic construction design, with an electric part of circuit breaker with operating mechanism and the underframe three is installed is unified into a unified integral body.An electric part of circuit breaker is by insulating cylinder, outlet arm, vacuum interrupter, soft connection and insulator are formed up and down; Operating mechanism keeps releasing device and secondary control system by support, energy-storage system, drive system, on/off switch; Underframe links to each other electric part and by it circuit breaker is installed on the service position with operating mechanism.Mume flower contact 11, handcart contact arm 12 and insulating cylinder 13 all are installed on the quiet support 15 that holds vacuum tube 14.Below vacuum tube 14, be support 18 and insulated tension pole 19.Secondary plug socket 16 is placed in the top of spring operating mechanism 17.
The operation principle of circuit breaker: to be that the contact that utilizes particular design is closed in the arc control device of high vacuum close the purpose of closing with the disjunction line current with dividing to come to reach with vacuum circuit-breaker, because the vacuum of height has high dielectric strength, thereby in the separating brake position, only need very little clearance between open contacts just can satisfy the requirement of insulation, when circuit breaker is received switching signal, under the effect of operating mechanism, moving contact moves upward, and contact movingly with fixed contact, finish making process.Under the alive situation in circuit breaker loop, when receiving sub-gate signal, under the effect of operating mechanism, moving contact moves downward, and leaves fixed contact, the dynamic and static contact time of releasing has produced electric arc, meanwhile, the flow through contact of special construction of arc current has produced radial magnetic field, and this magnetic field and electric arc interact, make electric arc not concentrate in the small range along running arc road high-speed motion thereby the electric arc scaling loss to contact surface, the scaling loss of contact surface is light and even.In alternating current zero passage moment, because dielectric strength is recovered to be exceedingly fast behind the arc of vacuum medium, under certain clearance between open contacts, from then on alternating current arc extinguishes, and reaches the purpose of drop-out current.
According to details shown in the spring operating mechanism among Fig. 2 17 and Fig. 4, the cut-offfing of circuit breaker, turn-on power loss are to be realized by this part, wherein insulating cylinder 13 not only supports electrification in high voltage function element, while owing to adopt circular configuration as skeleton in order to install, make the high-pressure section three-phase isolate mutually, reduced the possibility that influences other phase because of a phase accident; Upper and lower outlet arm is as circuit breaker and the intermediate link that an extraneous circuit interrelates, and also plays transmission, distributes the effect of circuit breaker internal heat; Vacuum interrupter is the cardiac component of circuit breaker, and the disjunction of a circuit, connection are all finished in these parts; The movable current-carrying part of arc control device connects by outlet arm under the soft connection, and the motion of moving conductive rod then is by insulator and the action of accepting operating mechanism.
This mechanism adopts the clamping plate type structure, and the energy storage drive part of mechanism is arranged in the left plate inboard, during running part and mechanical interlocking are in, between right plate.Close, tripping spring is arranged in left and right side plate outside; Auxiliary switch is housed on the handcart, travel switch, the closing coil in switch motor loop is housed on the side plate of middle part, during overcurrent release and separating brake magnet then are contained in, between right plate, make rational in infrastructurely, simple and clear like this, each rotating shaft is stressed rationally, good stability.This mechanism closes, tripping spring adopts the compression spring, and drive part adopts click to drive; Mechanism still can energy storage at closing position.Thereby has a reclosing function; Adopt machinery and electrical interlock, to prevent empty closing operation under "on" position.
Energy-storage system can be divided into electric energy-stored and manual energy storage: a) electric energy-stored is to begin high speed rotating after energy storage motor 32 is received the energy storage signal, driving cam 34 through secondary gear reducer 33 rotates, drive rocker 60 swings by turbine 59, driving sour jujube 39 through red driving ratchet 38 rotates, ratchet is to fixedly connected with energy storage axle 37, thereby driving energy storage axle 37 rotates, the beeline that is compressed by the 36 compression switching-in springs of the connecting lever on the energy storage axle, 31 switching-in springs 31 is the dead-centre position that connecting lever rotates: shortly past the dead-centre position, connecting lever 43 on the energy storage axle promotes travel switch 42 and cuts off accumulation power supply, drive the shiny surface that ratchet arrives ratchet 39 simultaneously, allow motor dally; At this moment, connecting lever 36 has the trend that clockwise direction rotates, cam 45 and connecting lever 36 and energy storage axle 37 under the switching-in spring active force; Fixedly connected, thereby cam 45 also is the trend that clockwise rotates, because the pin 44 on the cam 45 withstood by connecting lever 46, thereby cam can not continue to clockwise rotate, and just switching-in spring 31 is by energy storage and maintained.B) manually energy storage: when the manual energy storage of needs, with the energy storage taper knob on the bent wheel shaft 35 of energy storage, clockwise direction rotates, because the special construction of handle, the bent wheel shaft of energy storage can clockwise rotate with handle, thereby drives cam rotation, and mechanism enters thermal energy storage process (with electric energy-stored process), when learning the energy storage end " clickly " sound, at this moment should stop manual energy storage.
When will close a floodgate: the operating mechanism after the energy storage, its switching-in spring is compressed, this spring makes cam 45 towards rotating along the inserting needle direction by connecting lever 36, but this trend is subjected to the prevention of connecting lever 46, and the location status of connecting lever 46 is subjected to the influence of another connecting lever 41, connecting lever 46 can not be rotated by clockwise direction, but when not needing to close a floodgate, clockwise rotate with making electromagnet 48 or the connecting lever 41 that manually connects button, then connecting lever 46 can not get connecting lever 41 supports, thereby cam 45 under the effect of switching-in spring power towards turning clockwise, driven support plate 47 and rotated toward the clockwise direction, and push rod is moved upward, connecting lever 52 is rotated counterclockwise on the main shaft, connecting lever 24 turns clockwise, and makes conducting rod in the vacuum interrupter 14 by insulator 19, moving contact moves upward, thereby makes breaker closing.
When wanting separating brake: accumulator is in making process, because connecting lever rotates counterclockwise on the main shaft, thereby make tripping spring compression and be maintained at compressive state, because "on" position is to keep by connecting lever 49, the status of support of connecting lever 49 then roller 50 keeps, when wheel 50 is rotated counterclockwise, connecting lever 49 states can not get maintaining under the power effect of the connecting lever on the support plate 47 connecting lever 49 towards rotating counterclockwise, make support plate 47 can not be in closing position like this, connecting lever 52 rotates counterclockwise under the effect of switching-in spring pressure, connecting lever 24 is rotated counterclockwise, contact is moved downward, breaker open operation, in the final position near separating brake, oil bumper 68 begins action and absorbs the separating brake remaining kinetic energy.
Because mechanism equally can energy storage when being in closing position for circuit breaker, thereby breaker open operation should be able to close a floodgate immediately, promptly has the reclosing function.
Circuit breaker can move energy storage combined floodgate and separating brake with operating grip, also can be with the electronic aforesaid operations of finishing, under regular service conditions, need not overhaul in 10～20 years, but, thereby still need do necessary inspection, maintenance work usually because users' environment for use condition difference is very big.The mechanical endurance of circuit breaker be close for 10000 times, the branch operational cycle, the rated current open and close times is 10000 times, the rated short circuit current open and close times is 20 times, thereby to the frequent especially user of operation, just prevents from that circuit breaker from surpassing under the above-mentioned parameter to work on.
Claims (4)
1, a kind of HVAC vacuum circuit breaker, wherein circuit breaker electric part, operating mechanism and an installation underframe are linked to be an integral body; Electric part by insulating cylinder, up and down outlet arm, vacuum interrupter (14), be flexible coupling and insulated tension pole (19) is formed, it is characterized in that:
Hold vacuum interrupter in the insulating cylinder and also support outlet arm up and down, being flexible coupling connects vacuum interrupter and insulated tension pole; Operating mechanism keeps releasing device and secondary control system to form by support, energy-storage system, drive system, divide-shut brake; Underframe connects electric part and operating mechanism and it is supported on the service position.
2,, it is characterized in that arc control device have movable current-carrying part and connect with following outlet arm by being flexible coupling, but insulated tension pole links to each other with moving conductive rod according to the HVAC vacuum circuit breaker of claim 1.
3, according to the HVAC vacuum circuit breaker of claim 2, it is characterized in that operating mechanism adopts the clamping plate type structure, the energy-storage system of mechanism is arranged on the left plate inboard; During drive system and mechanical interlocking are in, between right plate.
4, according to the HVAC vacuum circuit breaker of claim 2, it is characterized in that energy-storage system comprises energy storage motor, secondary gear reducer, cam, turbine, ratchet, switching-in spring and travel switch, energy storage motor drives cam rotation through secondary gear reducer, turbine drives rocker makes ratchet rotate, thereby makes the connecting lever compression switching-in spring on the energy storage axle also cut off energy storage motor simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113666 CN2836218Y (en) | 2005-07-14 | 2005-07-14 | High-voltage AC vacuum breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520113666 CN2836218Y (en) | 2005-07-14 | 2005-07-14 | High-voltage AC vacuum breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2836218Y true CN2836218Y (en) | 2006-11-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520113666 Expired - Fee Related CN2836218Y (en) | 2005-07-14 | 2005-07-14 | High-voltage AC vacuum breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2836218Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158499A (en) * | 2016-08-11 | 2016-11-23 | 现代重工(中国)电气有限公司 | A kind of HVF vacuum circuit breaker |
-
2005
- 2005-07-14 CN CN 200520113666 patent/CN2836218Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158499A (en) * | 2016-08-11 | 2016-11-23 | 现代重工(中国)电气有限公司 | A kind of HVF vacuum circuit breaker |
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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: 20061108 Termination date: 20140714 |
|
| EXPY | Termination of patent right or utility model |