CN201886957U - Indoor high-voltage alternating current (AC) vacuum circuit breaker - Google Patents
Indoor high-voltage alternating current (AC) vacuum circuit breaker Download PDFInfo
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- CN201886957U CN201886957U CN2009202189313U CN200920218931U CN201886957U CN 201886957 U CN201886957 U CN 201886957U CN 2009202189313 U CN2009202189313 U CN 2009202189313U CN 200920218931 U CN200920218931 U CN 200920218931U CN 201886957 U CN201886957 U CN 201886957U
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Abstract
The utility model relates to an indoor high-voltage alternating current (AC) vacuum circuit breaker which comprises a circuit breaker mechanism and a switching on and off operating mechanism, wherein the circuit breaker mechanism is formed by encapsulating a vacuum arc extinguish chamber and an upper and a lower outgoing line seats (28 and 31) into a whole by epoxy resin automatic pressure gel molding technology; the circuit breaker comprises the upper outgoing line seat (28), a fixed contact, a movable contact, a flexible connection (30) and the lower outgoing line seat (31) which are connected in sequence, wherein the fixed contact and the movable contact are positioned in the vacuum arc extinguish chamber; and the vacuum arc extinguish chamber is pushed to be opened and closed by an insulating pull rod (33) and a contact pressure spring (40).
Description
(1) technical field
The utility model relates to a kind of indoor HVAC vacuum circuit breaker that has electronic or manual stored energy mechanism.
(2) background technology
Existing vacuum circuit-breaker, complex structure operation inconvenience, not easy to operate especially under the situation of outage, at this a kind of vacuum circuit-breaker that has electronic or manual stored energy mechanism is proposed, it is simple to operate, the safe coefficient height.In addition, the vacuum circuit-breaker that is wherein adopted is that circuit breaker (ZBP type) adopts epoxide resin automatic pressure gel moulding process (APG technology) that current-carrying component package such as vacuum interrupter and outlet seat are up and down become an integral body.Owing to select the epoxy resin of excellent performance for use, performances such as the machinery of product, electric and heat-proof aging have been guaranteed.
(3) utility model content
The purpose of this invention is to provide a kind of vacuum circuit-breaker that has electronic or manual stored energy mechanism;
Another object of the present invention provides a kind of indoor HVAC vacuum circuit breaker that produces longitudinal magnetic field between dynamic and static contact that has.
A kind of indoor HVAC vacuum circuit breaker, comprise breaker mechanism and breaking-closing operating mechanism, described breaker mechanism be adopt the epoxide resin automatic pressure gel moulding process with vacuum interrupter and up and down the outlet seat be packaged into one integrally formed, described circuit breaker comprises successively the last outlet seat 28, the fixed contact that is positioned at the vacuum extinction chamber interior and the moving contact that link, be flexible coupling 30 and following outlet seat 31, and the folding of vacuum interrupter is insulated tension pole 33 and 40 promotions of contact pressure spring.
Described close/open machine has manual or electric energy-stored mechanism, described stored energy mechanism comprises spring energy-storage reduction box 1, energy storage connecting lever 22, energy-stored spring 21, closing coil 4, switching winding 12, energy storage motor 18, auxiliary switch 6, spring energy-storage indicating device 20 and branch/combined floodgate indicating device 16, energy storage motor 18 drives energy storage connecting lever 22 and rotates, elongate energy-stored spring 21 and carry out energy storage, spring energy-storage indicating device 20 indication energy storage situations, whether closing coil 4 and switching winding 12 control energy-stored springs 21 discharge.
The vacuum interrupter of circuit breaker adapted is arranged on the dynamic and static contact that produces suitable longitudinal magnetic field between the dynamic and static contact in the vacuum interrupter.
Beneficial effect: this ZBP type indoor HVAC vacuum circuit breaker is the indoor switchgear that is used for the 12KV electric power system, is latest generation 12KV solid sealing type vacuum circuit breaker; Adopt the modular springs operating mechanism, have easy to maintenance, faster, the Mechanical Reliability height.
Miniaturization low resistance arc control device and a main conductive circuit are cast in the epoxy resin, make the circuit breaker insulating properties more reliable; Adopt the electric current aeration technology, cooperation low-drag type vacuum interrupter greatly reduces the temperature rise under the vacuum circuit-breaker long-term work and reduces the loss of electric energy.Adopt operating mechanism and the design of breaker body integral type, both can be used as the fixed installation unit, also can the special-purpose propulsive mechanism of adapted, form the use of handcart unit.
This circuit breaker is because of its special superiority, the occasion that is particularly useful for carrying out requirement rated operational current frequent operation or cut-offs short circuit current.Circuit breaker satisfies the requirement of automatic reclosing fully and has high operating reliability and useful life.This circuit breaker is finished type approval test by standard-requireds such as GB, JB, DL, and by national-level appraisal.This circuit breaker can be widely used in industry and urban infrastructure constructions such as power plant, electrical network, metallurgy, petrochemical industry.
(4) description of drawings
The generalized section of this indoor HVAC vacuum circuit breaker of Fig. 1;
Fig. 2 is vacuum circuit-breaker and folding lock operating mechanism schematic diagram;
Fig. 3 is dynamic and static contact contact condition schematic diagram;
Fig. 4 is dynamic and static contact disengaged position schematic diagram;
Fig. 5 is dynamic and static contact contact-making surface schematic diagram;
Fig. 6 is a magnetic line of force schematic diagram between the dynamic and static contact.
1 reduction box, 2 manual energy-storage operating holes, 3 blocking levers, 4 closing coils, 5 switch knobs, 6 auxiliary switches, 7 housings, 8 opening button, 9 tripping springs, 10 main shafts 11 oil buffering, 12 switching windings 13 close a floodgate and keep pallets 14 buckle axles 15 separating brake semiaxis 16 on/off switch to indicate 20 energy storage of 17 combined floodgate bars, 18 energy storage motors, 19 microswitches to indicate 26 energy storage of 21 energy-stored springs, 22 energy-storage crank arms, 23 rollers, 24 cams, 25 combined floodgate connecting plates to keep on pallet 27 poles 28 wire outlet seat 29 vacuum interrupters 30 large connecting lever 38 chassis vehicles of wire outlet seat 32 epoxyresin insulators 33 insulated tension poles 34 transmission crank arm, 35 three-phase transmission crank arm, 36 connecting plates, the 37 transmissions 39 Mume flower contacts 40 contact pressure springs that are flexible coupling 31 times
(5) embodiment
Describe in detail below in conjunction with accompanying drawing:
As shown in fig. 1, show the basic structure of this circuit breaker.This circuit breaker adapted the modular springs operating mechanism, operating mechanism places in the mechanism case before the arc control device, this mechanism has manual energy storage and electric energy-stored function.This circuit breaker is formed unified integral body with arranging before and after pole and the operating mechanism, make the operating characteristics of operating mechanism more identical in the required performance of arc control device folding, reduce unnecessary between transmission link, reduced energy consumption, make the performance of circuit breaker more reliable.
As shown in Figure 2, this circuit breaker main circuit current path when "on" position is: from last outlet seat 28, to the dynamic and static contact that is positioned at vacuum interrupter inside, then flow through dynamic and static contact and be flexible coupling 30, to outlet seat 31 outflows down.The folding of vacuum interrupter is to rely on insulated tension pole 33 and contact pressure spring 40 to promote.
This circuit breaker design has the electric spring energy agency.The stored energy mechanism part comprises spring energy-storage reduction box 1, energy-stored spring 21, closing coil 4, switching winding 12, energy storage motor 18, auxiliary switch 6, spring energy-storage indicating device 20 and branch/combined floodgate indicating device 16.This operating mechanism can install two releases additional by the expection switching function, a dead lock, and a cut-out switch, a limit switch is used for closing spring load signal, electric local closer and lengthening auxiliary switch.The switching-in spring of threading off is reloaded automatically by motor, and can finish switch motion by " opening a unification opens " order, when closed action fails again automatically, just must finish this action.Vacuum interrupter is fixedly mounted on insulating support and the bearing, therefore can bear the external force that also switch motion and contact pressure are produced.Necessary contact pressure is from contact pre-compressed spring and atmospheric pressure after closing a floodgate.
The energy storage action: energy storage can have external power source to drive energy storage motor 18 or manpower is pulled manual stored energy operation hole 2 by the rotation of energy storage bar, output torque is by reduction box 1, gear drive drives energy storage connecting lever 22 and rotates, thereby elongates energy-stored spring 21, reaches the energy storage purpose.After the energy-stored spring energy storage is finished, energy keeps sincere sub 26 to maintain by energy storage, and the connecting lever of energy storage simultaneously 22 promotes the interlock connecting plate and drives limit switch 19 actions, interlock energy storage direction board indication " energy storage " state, cut off the energy storage motor power supply, finish whole energy storage action.
Feed motion: after mechanism's energy storage finishes, the operator presses switch knob 5 with hand or remote operation makes closing coil 4 moving unshakable in one's determination by adhesive, travel forward, driving the combined floodgate junction panel by button rotates, remove the maintenance that energy storage keeps 26 pairs of energy storage of pallet, switching-in spring 21 rapid release energy, and drive cam 24 rotates in the counterclockwise direction, make the transmission crank arm on the main shaft drive main shaft 10 rotations by combined floodgate bar 17, drive three-phase transmission crank arm 35 again, make big connecting lever 37 actions of transmission by connecting plate 36, insulated tension pole 32 motion pulling vacuum interrupter moving contacts in the pole are contacted with fixed contact and 40 energy storage of contact pressure spring, the big connecting lever motion of transmission simultaneously drives tripping spring 9 energy storage and finishes, keep pallet 13 energy storage to keep by closing a floodgate, energy storage board indication 20 " not energy storage " state, kinematic link pulling auxiliary switch 6 carries out power supply and switches, and makes circuit breaker finish closing operation.
Sub-switching operation: after mechanism closes a floodgate and finishes, the operator presses opening button 8 or remote operation makes switching winding 12 actions, move upward, separating brake semiaxis 15 promotes to move by button at switching winding, make buckle dropout on the buckle axle 14, removing closes a floodgate keeps pallet 13 energy storage to keep, and main shaft is rotated under the 40 power actings in conjunction of the contact pressure spring on tripping spring power and the insulated tension pole 33, makes the transmission crank arm motion.Insulated tension pole motion pulling vacuum interrupter moving contact deviates from fixed contact, and the auxiliary switch 6 of kinematic link pulling simultaneously resets, and finishes the separating brake action.
Adopt epoxide resin automatic pressure gel moulding process (APG technology) that current-carrying component package such as vacuum interrupter and outlet seat are up and down become an integral body in this circuit breaker.Owing to select the epoxy resin of excellent performance for use, performances such as the machinery of product, electric and heat-proof aging have been guaranteed.Its principal character is as follows:
1. vacuum seal performance is good: vacuum interrupter adopts reliable metallization process and braze-welded structure, and the one-step seal-exhaust technology is special seasoned, and advanced technologies such as pressurization leak detection guarantee that product can both keep reliable vacuum degree in whole lifetime;
2. insulation property are reliable: the interface of padded coaming and vacuum interrupter and epoxy resin is in conjunction with tight, and product has low-down office's value of putting and high withstand voltage level, guarantees the reliability of the long-term charging operation of product;
3. high-low temperature resistant impact and mechanical shock performance are good: owing to flexible padded coaming between vacuum interrupter and epoxy resin, product should not be impaired after bearing high-low pressure impact and mechanical shock;
4. non-maintaining: pole has increased the external insulation level of vacuum interrupter, and vacuum interrupter can be accomplished non-maintaining in the use;
5. miniaturization: because vacuum interrupter has the protection of reliable insulating material by the outside, dwindled insulation distance greatly, can corresponding minimizing vacuum circuit-breaker and switch cubicle volume;
6. easily install: because pole has been a module with vacuum interrupter, galvanic circle insulating part and mechanical support collection, significantly reduced the number of spare parts of vacuum circuit-breaker, easily installed, and reduced the out of order probability of vacuum circuit-breaker.
Produce the arc quenching principle of longitudinal magnetic field between the dynamic/static contact: as shown in Fig. 3-6, the vacuum interrupter of circuit breaker adapted, has the extra-high vacuum degree, circuit breaker is in system, when normal separating brake or short circuit interruption, moving contact moves under the drive of operating mechanism, moving, the fixed contact separation also produces electric arc betwixt, because it is moving, the fixed contact particular design is moving, produce suitable longitudinal magnetic field between the fixed contact, control electric arc is even in contact surface, move burning, and keep low arc voltage, when the arc current natural zero-crossing, residual ion electronics and steam are under electromagnetic field effect, very fast compound or condense upon on contact surface and the radome, the very fast recovery of the dielectric strength of arc control device fracture, thus make arc extinction, reach the disjunction purpose.
Contact compression spring can compensate arc erosion automatically, but should the ablation amount very trickle.Cut off electric current when contact disconnects and to cause the metal vapors arc discharge in a vacuum.Electric current is by the metal vapors plasma, up to transition at zero point next time occurring.Electric arc extinguishes near current zero the time, and the metal vapors of conduction is condensate in the metal surface in several milliseconds.
Therefore, the dielectric strength in contact gap is recovered rapidly.Establishing rapidly of contact gap dielectric intensity helps safe arc extinguishing, even the moment that the contact disjunction occurs in before the current zero transition also is like this.Therefore, can be up to the longest arcing time of holding utmost point disjunction to the end above 15 milliseconds.The metal vapors arc discharge can only be kept under certain minimum current.The electric current that does not reach this point can block before current zero.In order to prevent to produce the superelevation overvoltage when the inductive circuit conducting, must be controlled at minimum point to above-mentioned cut-off current.The design respectively of contact geometry and size by different breaking current and arc control device type.
Longitudinal field contact: longitudinal magnetic field can prevent that electric arc from gathering, even electric current also is like this when very big.Therefore, the stress on the dish type contact surface can evenly distribute, and prevents puncture.Must the electric arc that adopt various conventional arc-suppressing methods be cooled off, even also should be like this before contact does not reach minimum arc extinguishing distance and striking energy.Yet, because metal vapors has extremely strong conductive properties, and the arc voltage value that produces only at 20V between the 200V, therefore, the electric arc that ignites in the vacuum circuit-breaker can not cool off.Owing to above reason and short arcing time, the arc energy that produces in the circuit breaker is very small.This also is that this vacuum circuit-breaker has the very reason of long life.
Above listed a series of detailed description only is specifying at a feasibility embodiment of the present invention, but this embodiment is not in order to limit claim of the present invention, allly do not break away from equivalent embodiment or the change that skill spirit of the present invention is done, for example, equivalence embodiment Deng changing all should be contained within the claim of this case.
Claims (3)
1. indoor HVAC vacuum circuit breaker, comprise breaker mechanism and breaking-closing operating mechanism, it is characterized in that: described breaker mechanism is to adopt the epoxide resin automatic pressure gel moulding process with vacuum interrupter and outlet seat (28 up and down, 31) be packaged into one integrally formed, described circuit breaker comprises successively the last outlet seat (28), the fixed contact that is positioned at the vacuum extinction chamber interior and the moving contact that link, is flexible coupling (30) and following outlet seat (31), and the folding of vacuum interrupter is insulated tension pole (33) and contact pressure spring (40) promotion.
2. indoor HVAC vacuum circuit breaker according to claim 1, it is characterized in that: described close/open machine has manual or electric energy-stored mechanism, described stored energy mechanism comprises spring energy-storage reduction box (1), energy storage connecting lever (22), energy-stored spring (21), closing coil (4), switching winding (12), energy storage motor (18), auxiliary switch (6), spring energy-storage indicating device (20) and branch/combined floodgate indicating device (16), energy storage motor (18) drives energy storage connecting lever (22) and rotates, elongate energy-stored spring (21) and carry out energy storage, spring energy-storage indicating device (20) indication energy storage situation, whether closing coil (4) and switching winding (12) control energy-stored spring (21) discharge.
3. indoor HVAC vacuum circuit breaker according to claim 2 is characterized in that: the vacuum interrupter of circuit breaker adapted is arranged on the dynamic and static contact that produces suitable longitudinal magnetic field between the dynamic and static contact in the vacuum interrupter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202189313U CN201886957U (en) | 2009-12-10 | 2009-12-10 | Indoor high-voltage alternating current (AC) vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202189313U CN201886957U (en) | 2009-12-10 | 2009-12-10 | Indoor high-voltage alternating current (AC) vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201886957U true CN201886957U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202189313U Expired - Fee Related CN201886957U (en) | 2009-12-10 | 2009-12-10 | Indoor high-voltage alternating current (AC) vacuum circuit breaker |
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| CN (1) | CN201886957U (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 |
-
2009
- 2009-12-10 CN CN2009202189313U patent/CN201886957U/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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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20161210 |