CN102376499B - Air flow quick-acting tripping mechanism for circuit breaker - Google Patents
Air flow quick-acting tripping mechanism for circuit breaker Download PDFInfo
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- CN102376499B CN102376499B CN201010258085.5A CN201010258085A CN102376499B CN 102376499 B CN102376499 B CN 102376499B CN 201010258085 A CN201010258085 A CN 201010258085A CN 102376499 B CN102376499 B CN 102376499B
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Abstract
The invention discloses an air flow quick-acting tripping mechanism for a circuit breaker. The air flow quick-acting tripping mechanism comprises at least one monopolar module, an operating mechanism arranged on the monopolar module, and at least one acting rod, wherein the operating mechanism comprises a tripping piece; an arc extinguishing system is arranged in each monopolar module and an air exhaust hole is formed in each monopolar module; a thin-sheet air flow sensor is arranged in each monopolar module; the air flow sensor is arranged between the arc extinguishing system and the air exhaust hole; one end of each air flow sensor is fixedly connected to the same transmission shaft; the transmission shaft passes through all the monopolar modules in a rotating manner; one end of the acting rod is fixedly connected to the transmission shaft and the other end of the acting rod extends to a position close to the tripping piece; and when the acting rod is rotated along with the transmission shaft, the tripping piece can be pushed to make the operating mechanism trip. In the circuit breaker which generates air flow quick action by using a movable contact and a fixed contact, the acting rod is operated by the air flow sensor so as to drive the operating mechanism to operate; and the air flow quick-acting tripping mechanism has a simple structure and low requirement on air pressure generated by the movable contact and the fixed contact, so the cost of a product is reduced, and the breaking property of the product is improved.
Description
Technical field
The present invention relates to low-voltage circuit breaker field, relate in particular to a kind of dynamic/static contact that utilizes and produce air-flow make the to thread off air flow quick-acting tripping mechanism of part quick-break in mold cased circuit breaker.
Background technology
In the one pole modular construction that contact system is double breaking points in mold cased circuit breaker, the high-temperature expansion gas that utilizes contact system to produce in the time of disjunction short circuit current promotes the QA method of operating mechanism of circuit breaker, and what conventionally adopt is all vapour-pressure type principle.In prior art, its structure is all to adopt the method for the air pressure of high-temperature expansion γ-ray emission being transmitted out by a gas passage substantially, then goes to promote an independent press member motion, and the dropout part that goes to impact on operating mechanism makes its action.Therefore, these structures exist gas pressure to transmit distance, complex structure, and sealing property has relatively high expectations, air pressure when mechanism works requires high problems.
Summary of the invention
The object of the present invention is to provide a kind of air flow quick-acting tripping mechanism of circuit breaker, this air flow quick-acting tripping mechanism has solved complex structure in prior art, gas pressure transmits distance, and sealing requirements is high, and air pressure when mechanism works requires high-technology problem.
The present invention is solved by the following technical solutions:
The air flow quick-acting tripping mechanism of a kind of circuit breaker of the present invention, comprise at least one one pole module, be arranged on the operating mechanism in one of them one pole module, described operating mechanism comprises a dropout part, in each one pole module, be equipped with arc quenching system and steam vent, in described each one pole module, be respectively provided with a lamelliform pneumatic sensor, pneumatic sensor is placed between described arc quenching system and steam vent, one end of all pneumatic sensors is all fixedly connected on same transmitter shaft, described transmitter shaft runs through whole one pole modules rotationally, also comprise at least one actuating strut, one end of actuating strut is fixedly connected on described transmitter shaft, the other end extends near of described dropout part, in the time that actuating strut rotates with described transmitter shaft, can promote described dropout part threads off operating mechanism.
Pneumatic sensor of the present invention comprises the linking axle of at least one airflow sensor face and two coaxial-symmetricals.
On the each airflow sensor face of the present invention, be respectively provided with at least one reinforcement.
Transmitter shaft of the present invention is combined by multistage.
Between adjacent two pneumatic sensors of the present invention, be connected by short sleeve or described actuating strut, described actuating strut is T shape, one end is minor axis, the other end is the stock crossing with minor axis, the two ends of described minor axis and described short sleeve are equipped with convergence hole, being connected between axle of described convergence hole and described pneumatic sensor is that described stock extends near of described dropout part without being rotationally connected.
In the convergence hole at minor axis of the present invention and described short sleeve two ends, be provided with multiple interior fields of conjugate action, the linking axle of described pneumatic sensor both sides is provided with multiple outer engagement surface, and between described outer engagement surface and the interior field of conjugate action, nothing is rotatably assorted.
The present invention also comprises two seal, is enclosed within respectively on the outermost linking axle of described circuit breaker two ends pneumatic sensor.
On the each described actuating strut of the present invention, be connected with return unit.
Return unit of the present invention is torsion spring, and two pins of torsion spring insert respectively in the installing hole of described one pole module housing one side adjacent with this torsion spring.
By above technical scheme, the circuit breaker that utilizes dynamic/static contact to produce air-flow quick-action of the present invention, drive actuating strut motion by pneumatic sensor, the motion of actuating strut band pneumatic operating mechanism, this air pressure simple in structure and that dynamic/static contact is produced requires low, reduce product cost, and promoted product interrupting performance.
Accompanying drawing explanation
Fig. 1 is the one pole module broken section structural representation with actuating strut of circuit breaker of the present invention.
Fig. 2 is the one pole module-external structural representation with actuating strut of circuit breaker of the present invention.
Fig. 3 is the overall structure schematic diagram of circuit breaker of the present invention.
Fig. 4 is the syndeton schematic diagram of actuating strut and pneumatic sensor in circuit breaker of the present invention.
Fig. 5 is the stereochemical structure exploded perspective view of Fig. 4.
Fig. 6 is operation principle schematic diagram of the present invention.
Embodiment
As shown in Fig. 1-6, the air flow quick-acting tripping mechanism of a kind of circuit breaker of the present invention, comprise at least one one pole module 5, be arranged on the operating mechanism 4 in one of them one pole module 5, operating mechanism 4 comprises a dropout part 1, in each one pole module 5, be equipped with arc quenching system 3 and steam vent 10, each one pole module 5 is interior is respectively provided with a lamelliform pneumatic sensor 6, pneumatic sensor 6 is placed between arc quenching system 3 and steam vent 10, one end of all pneumatic sensors is all fixedly connected on same transmitter shaft, transmitter shaft runs through whole one pole modules rotationally, also comprise at least one actuating strut 2, one end of actuating strut 2 is fixedly connected on transmitter shaft, the other end extends near of dropout part 1, in the time that actuating strut 2 rotates with transmitter shaft, the part 1 that can promote to thread off is threaded off operating mechanism.
As shown in Figure 4, Figure 5, each pneumatic sensor 6 comprises at least one airflow sensor face 61, and on each airflow sensor face, being respectively provided with at least one reinforcement 62, the both sides of pneumatic sensor 6 one end are provided with the linking axle 63 of coaxial-symmetrical, are connected axle 63 and are provided with multiple outer engagement surface 64.Actuating strut 2 is T shape, formed by curved stock 26 and the minor axis 23 crossing with stock, on curved stock 26, there is curved surface 21 and curved surface 22, curved surface 21 contacts with the cross bar 11 of the part 1 of threading off in operating mechanism 4, when stock 26 is moved, this curved surface 21 impacts the cross bar 11 on dropout part 1, drive dropout part 1 to move, minor axis 23 two ends are respectively equipped with convergence hole 25, in hole, there are multiple interior fields of conjugate action 24, the linking axle 63 at adjacent pneumatic sensor 6 two ends inserts in this convergence hole 25, and the outer engagement surface 64 on axle is meshed with the interior field of conjugate action 24 in hole.On each actuating strut, be connected with return unit, in the time that actuating strut is motionless, make it to maintain static, after actuating strut action, return to original state, guarantee that actuating strut can not touch dropout part automatically by mistake.Return unit can be torsion spring 7, and the spring terminal of each torsion spring 7 overlaps and contacts on actuating strut and with the curved surface 22 on actuating strut, and two pins of the other end insert respectively in the installing hole 51 that is adjacent one pole module housing one side; Return unit can be also that sheet spring etc. has flexible device, as long as be fixed on previous status can make actuating strut not move time.Also comprise multiple short sleeves 8, if there is no actuating strut 2 between adjacent two pneumatic sensors, be fixed linking by a short sleeve 8, the two ends of short sleeve 8 are provided with convergence hole 82, in hole, be provided with multiple interior fields of conjugate action 81, the linking axle 63 of pneumatic sensor inserts in convergence hole 82, outer engagement surface 64 on axle is meshed with the interior field of conjugate action 24 in hole, make all pneumatic sensors 6 form an entirety by the connection of short sleeve 8, as long as wherein have the rotation of a pneumatic sensor 6, just can drive integrated model to move together.Between the linking axle 63 at said flow transducer two ends, the minor axis 23 of actuating strut and short sleeve 8, can not relatively rotate, they overlap together, jointly form the transmitter shaft in the present invention.Also comprise two seal 9, be enclosed within respectively on the outermost linking axle 63 of pneumatic sensor 6 at circuit breaker two ends, to eliminate the field of conjugate action 64 on this linking axle 63, make the two ends rounding of transmitter shaft, make transmitter shaft better rotate and play sealing function, make the air-flow producing in one pole module be difficult for releasing.
The circuit breaker that utilizes dynamic/static contact to produce air-flow quick-action of the present invention, its assembling process is:
First in the assembling process of one pole module 5, each pneumatic sensor 6 is packed between the arc quenching system 3 and steam vent 10 in each one pole module 5 in advance.In total process of assembling of mold cased circuit breaker, first torsion spring 7 is packed on actuating strut 2, the spring terminal of torsion spring 7 is leaned against on the curved surface 22 of actuating strut 2.By the convergence hole 25 of minor axis 23 one end on two actuating struts 2, be inserted in the one pole module 5 of assembly manipulation mechanism 4 and expose on the linking axle 63 of pneumatic sensor 6 of its both sides.A pin of torsion spring 7 is inserted in the hole 51 of this one pole module housing one side.By the convergence hole 25 of minor axis 23 other ends on two actuating struts 2, be inserted in another adjacent two one pole modules 5 and expose on the linking axle 63 of pneumatic sensor 6 of a side again, another pin of torsion spring 7 is inserted in the hole 51 of these one pole module 5 housing one sides.By the convergence hole 25 of short sleeve 8 one end, be inserted on the linking axle 63 of pneumatic sensor 6 that exposes opposite side in an above-mentioned one pole module 5 again.By the convergence hole 25 of short sleeve 8 other ends, be inserted on the linking axle 63 of pneumatic sensor 6 that exposes a side in the 3rd one pole module 5.Both sides after general assembly completes, are inserted in respectively seal 9 on the linking axle 63 of the pneumatic sensor 6 exposing.
As shown in Figure 6, operation principle of the present invention is as follows:
Adopt the principle of similar sail, by being arranged on the other pneumatic sensor 6 of the interior arc quenching system 3 of one pole module 5, the high-temperature expansion air-flow 33 that utilizes moving contact 32, fixed contact 31 to produce in the time of disjunction short circuit current, the process of discharging from arc quenching system 3 to steam vent 10, promote pneumatic sensor 6 and rotate; Due to the linking of pneumatic sensor 6 and actuating strut 2 and engage, and then the rotation of pushing action bar 2, make the face 21 on actuating strut 2 remove to impact the bar 11 of threading off on part 1 in operating mechanism 4, impel the operating mechanism 4 of mold cased circuit breaker to move rapidly, and then disengagement failure circuit; 7 of torsion springs play location and the effect resetting.
The utilization of this structure, can play with minimum number of spare parts, the structure of simplifying most, and the shortest gas pressure transmits distance, reaches the responsiveness of the fastest disengagement failure circuit, thereby can further improve the interrupting performance of product.Because main working part (pneumatic sensor 6) is assemblied in one pole module 5, therefore to gas seal property require low; Owing to there being enough air-flow sensing areas, as long as there is air flow stream mistake, just can promotes pneumatic sensor 6 and rotate, air pressure when therefore this structure works requires low.
Claims (9)
1. the air flow quick-acting tripping mechanism of a circuit breaker, comprise at least one one pole module, be arranged on the operating mechanism in one of them one pole module, described operating mechanism comprises a dropout part, in each one pole module, be equipped with arc quenching system and steam vent, it is characterized in that, in described each one pole module, be respectively provided with the pneumatic sensor of lamelliform at least one airflow sensor face, pneumatic sensor is placed between described arc quenching system and steam vent, one end of all pneumatic sensors is all fixedly connected on same transmitter shaft, described transmitter shaft runs through whole one pole modules rotationally, also comprise at least one actuating strut, one end of actuating strut is fixedly connected on described transmitter shaft, the other end extends near of described dropout part, in the time that actuating strut rotates with described transmitter shaft, can promote described dropout part threads off operating mechanism.
2. air flow quick-acting tripping mechanism according to claim 1, is characterized in that, described pneumatic sensor comprises the linking axle (63) of two coaxial-symmetricals.
3. air flow quick-acting tripping mechanism according to claim 2, is characterized in that, on each airflow sensor face, is respectively provided with at least one reinforcement.
4. air flow quick-acting tripping mechanism according to claim 2, is characterized in that, described transmitter shaft is combined by multistage.
5. air flow quick-acting tripping mechanism according to claim 4, it is characterized in that, between adjacent two pneumatic sensors, be connected by short sleeve (8) or described actuating strut, described actuating strut is T shape, one end is minor axis, the other end is the stock crossing with minor axis, the two ends of described minor axis and described short sleeve are equipped with convergence hole (25,82), described convergence hole (25,82) and being connected between axle (63) for without being rotationally connected of described pneumatic sensor, described stock extends near of described dropout part.
6. air flow quick-acting tripping mechanism according to claim 5, it is characterized in that, the convergence hole (25 at described minor axis and described short sleeve two ends, 82) in, be provided with multiple interior fields of conjugate action, the linking axle of described pneumatic sensor both sides is provided with multiple outer engagement surface, and between described outer engagement surface and the interior field of conjugate action, nothing is rotatably assorted.
7. air flow quick-acting tripping mechanism according to claim 6, is characterized in that, also comprises two seal, is enclosed within respectively on the outermost linking axle of described circuit breaker two ends pneumatic sensor.
8. air flow quick-acting tripping mechanism according to claim 1, is characterized in that, on each described actuating strut, is connected with return unit.
9. air flow quick-acting tripping mechanism according to claim 8, it is characterized in that, described return unit is torsion spring, and the spring portion of torsion spring is enclosed within on described actuating strut, and two pins of torsion spring insert respectively in the installing hole of described one pole module housing one side adjacent with this torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010258085.5A CN102376499B (en) | 2010-08-19 | 2010-08-19 | Air flow quick-acting tripping mechanism for circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010258085.5A CN102376499B (en) | 2010-08-19 | 2010-08-19 | Air flow quick-acting tripping mechanism for circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102376499A CN102376499A (en) | 2012-03-14 |
| CN102376499B true CN102376499B (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010258085.5A Active CN102376499B (en) | 2010-08-19 | 2010-08-19 | Air flow quick-acting tripping mechanism for circuit breaker |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104465214B (en) * | 2013-09-24 | 2017-09-15 | 上海电科电器科技有限公司 | Monopole module with air-blowing mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4459572A (en) * | 1982-09-10 | 1984-07-10 | Eaton Corporation | Circuit breaker with improved latch trip mechanism |
| FR2682530B1 (en) * | 1991-10-15 | 1993-11-26 | Merlin Gerin | RANGE OF LOW VOLTAGE CIRCUIT BREAKERS WITH MOLDED HOUSING. |
| US5608198A (en) * | 1995-06-26 | 1997-03-04 | Square D Company | Circuit breaker arrangement for protection against electrical arcs |
| CN1245731C (en) * | 2002-09-12 | 2006-03-15 | 浙江正泰电器股份有限公司 | Low-voltage circuit breaker with rapid lock-jumping function |
| CN201029088Y (en) * | 2006-08-21 | 2008-02-27 | 大全集团有限公司 | Combined energy trip mechanism with pre-tripping function |
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| CN102376499A (en) | 2012-03-14 |
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