CN102723227A - Vacuum circuit breaker mechanical transmission structure with small switch-on oscillation - Google Patents
Vacuum circuit breaker mechanical transmission structure with small switch-on oscillation Download PDFInfo
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- CN102723227A CN102723227A CN2012101763824A CN201210176382A CN102723227A CN 102723227 A CN102723227 A CN 102723227A CN 2012101763824 A CN2012101763824 A CN 2012101763824A CN 201210176382 A CN201210176382 A CN 201210176382A CN 102723227 A CN102723227 A CN 102723227A
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- pull bar
- electric pole
- mechanical transmission
- transmission structure
- vacuum circuit
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Abstract
The invention discloses a vacuum circuit breaker mechanical transmission structure with small switch-on oscillation, which comprises a first cover plate and a second cover plate; the first and the second cover plates are symmetrically arranged up and down; first and second side plates are arranged and fixedly matched between the first and the second cover plates in a bilateral symmetry manner; the first and the second cover plates as well as the first and the second side plates form a bus chamber jointly; at least one radiating bar is respectively formed on one side, deviated from the bus chamber, of the first side plate and the second side plate; the number of the blade-shaped radiating bars is correspondingly increased or decreased according to the size of the side plates; and the first and the second cover plates as well as the first and the second side plates further comprise a plurality of longitudinal radiating wave stripe bodies manufactured on the surfaces of the blade-shaped radiating bars through drawing. The vacuum circuit breaker mechanical transmission structure has the advantages of simple structure, excellent radiating capability and low in manufacturing cost.
Description
Technical field
The present invention relates to the technical field of HVAC vacuum circuit breaker, especially a kind of vacuum circuit-breaker hangs down the closing rebound mechanical transmission structure.
Background technology
HVAC vacuum circuit breaker is main electric protective equipment in high-voltage electric power system at present; Therefore to circuit breaker each item index request than higher; A circuit breaker wherein index-switch on of moving contact spring (contacting the time that begins to the stable connection of the contact moment from contact for the first time) is bigger to the power system stability influence; The spring of excessive switch on of moving contact can make electric power system disintegrate, so concerned countries, spring requires at 2ms and following industry standard to switch on of moving contact.And the built-in vacuum circuit-breaker of widely used current transformer on the current market; The spring of its switch on of moving contact is generally about 8ms, and therefore how making the switch on of moving contact spring of the built-in vacuum circuit-breaker of current transformer reach standard-required in industry is a difficult problem.
Influencing switch on of moving contact spring principal element has: closing speed, machine driving movement inertia, vacuum interrupter workmanship etc.Closing speed can be adjusted, and the vacuum interrupter product quality can solve through accurate the manufacturing, so the closing rebound key factor is the machine driving movement inertia, and comes from design, therefore should solve from the mechanical transmission structure design direction.
Widely used current transformer built-in vacuum circuit-breaker one pole internal structure such as Fig. 1 on the current market; Shown in Figure 2: drive mechanism mainly is by background vacuum interrupter moving contact 11; Background connecting bolt 12; Background is dominated electric pole 13, compositions such as background insulated tension pole 14 and connecting lever, spring operating mechanism (not shown).As can be seen from the figure the leading electric pole 13 of background be leading electric parts also be mechanical transmission component; This version has two kinds of defectives: the one, and be red copper as the drive mechanism parts because of its material; Quality is bigger; Corresponding movement inertia accounts for 50% of whole machine driven system, so the leading electric pole 14 of background is switch on of moving contact spring main sources; The 2nd, electrically contact through background watchband fingertip 16 because of touch base 15 under itself and the background as leading electric parts; The leading electric pole 13 of background electrically contacts the place at background watchband fingertip 16 easily and produces electric spark and cause the galvanic circle loose contact in machine driving, can cause the circuit breaker operation function to lose efficacy in advance when serious and scrap.
Summary of the invention
Technical problem to be solved by this invention is to the above-mentioned state of the art; And provide leading electric pole to separate, reduce movement inertia with the machine driving loop; Subdued closing rebound, had high reliability, a kind of vacuum circuit-breaker of long life hangs down the closing rebound mechanical transmission structure.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
A kind of vacuum circuit-breaker hangs down the closing rebound mechanical transmission structure; Comprise the leading electric pole, static contact seat, vacuum interrupter moving contact and the insulated tension pole that pass instrument transformer; Wherein, leading electric pole is formed with the center cavity that axially runs through, and should through the center cavity matched in clearance punching pull bar be arranged by leading electric pole; Punching pull bar one end is fixedly connected with the vacuum interrupter moving contact, and this punching pull bar other end and insulated tension pole are hinged; Leading electric pole is fixedly connected with static contact seat; During closing rebound, leading electric pole keeps static, and the punching pull bar is axially motion in center cavity.
For optimizing technique scheme, the concrete measure of taking also comprises:
Above-mentioned punching pull bar is the high-strength aluminum alloy material pull bar.
Above-mentioned punching pull bar is through being threaded and the vacuum interrupter moving contact fixes.
Above-mentioned punching pull bar cooperates with insulated tension pole is hinged through bearing pin.
The guider that is used to punching pull bar guiding is installed in the above-mentioned center cavity.
Above-mentioned leading electric pole passes through down, and touch base is fixedly connected with static contact seat.
Above-mentioned leading electric pole is fixedly connected with following touch base through the watchband fingertip.
Above-mentioned leading electric pole is copper hollow stem.
Compared with prior art; A kind of vacuum circuit-breaker of the present invention hangs down the closing rebound mechanical transmission structure; Comprise the leading electric pole, static contact seat, vacuum interrupter moving contact and the insulated tension pole that pass instrument transformer; Wherein, leading electric pole is formed with the center cavity that axially runs through, and should through the center cavity matched in clearance punching pull bar be arranged by leading electric pole; Punching pull bar one end is fixedly connected with the vacuum interrupter moving contact, and this punching pull bar other end and insulated tension pole are hinged; Leading electric pole is fixedly connected with static contact seat; During closing rebound, leading electric pole keeps static, and the punching pull bar is axially motion in center cavity.High-pressure vacuum breaker mechanical transmission structure of the present invention is mainly by the vacuum interrupter moving contact, the punching pull bar, and parts such as insulated tension pole are formed; The punching pull bar is processed by high-strength aluminum alloy material, and the one of which end processes screw thread and the vacuum interrupter moving contact is fastenedly connected, and the other end is hinged through bearing pin and insulated tension pole; The punching pull bar can be up and down in leading electric pole center cavity, is provided with the guider of punching pull bar in the leading electric pole center cavity; The leading electric pole that passes instrument transformer is static main conductive circuit parts.
Advantage of the present invention is:
1. leading electric pole separates with the machine driving loop: leading electric pole is only as main electric-conductor but not mechanical transmissioning piece, and leading electric pole is former is substituted by the punching pull bar that passes its center cavity as mechanically operated function.Leading electric pole quality is about 4.9 kilograms; And punching pull bar material is a high strength alumin ium alloy, and its quality has only 0.5 kilogram, so this punching pull bar movement inertia is only taken electric pole nearly 1/10th as the leading factor; Greatly reduce total movement inertia of drive system, effectively subdued the spring of circuit breaker switch on of moving contact;
2. after leading electric pole becomes static main conductive circuit parts, electrically contact phenomenons such as stable, difficult generation loose contact;
3. impulsive force reduced when reduction machine driving movement inertia made machine driving, was of value to the reliability and stability of components and parts such as vacuum interrupter, had improved the product reliability ability, ensured the normal operation function of circuit breaker in lifetime.
Description of drawings
Fig. 1 is a vacuum circuit-breaker one pole cut-away view in the background technology;
Fig. 2 is the A bilge construction enlarged drawing of Fig. 1;
Fig. 3 is the vacuum circuit-breaker one pole cut-away view of the embodiment of the invention;
Fig. 4 is the B bilge construction enlarged drawing of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1, Fig. 2 are the background technology structural representation, Fig. 3, shown in Figure 4 be structural representation of the present invention.
Reference numeral among Fig. 1 to Fig. 4 wherein is: touch base 15, background watchband fingertip 16, vacuum interrupter moving contact 1, insulated tension pole 2, punching pull bar 3, leading electric pole 4, center cavity 41, guider 42, instrument transformer 5, static contact seat 6, following touch base 7, watchband fingertip 8 under background vacuum interrupter moving contact 11, background connecting bolt 12, the leading electric pole 13 of background, background insulated tension pole 14, the background.
Extremely shown in Figure 2, of the present invention like Fig. 1
A kind of vacuum circuit-breaker hangs down the closing rebound mechanical transmission structure; Comprise the leading electric pole 4, static contact seat 6, vacuum interrupter moving contact 1 and the insulated tension pole 2 that pass instrument transformer 5; Wherein, Described leading electric pole 4 is formed with the center cavity 41 that axially runs through, and should through described center cavity 41 matched in clearance punching pull bar 3 be arranged by leading electric pole 4; Described punching pull bar 3 one ends are fixedly connected with vacuum interrupter moving contact 1, and these punching pull bar 3 other ends and insulated tension pole 2 are hinged; Described leading electric pole 4 is fixedly connected with described static contact seat 6; During closing rebound, described leading electric pole 4 keeps static, and described punching pull bar 3 is axially motion in center cavity 41.
Among the embodiment, punching pull bar 3 is the high-strength aluminum alloy material pull bar.
Among the embodiment, punching pull bar 3 is through being threaded and described vacuum interrupter moving contact 1 fixes.
Among the embodiment, punching pull bar 3 is through bearing pin and described 2 hinged cooperations of insulated tension pole.
Among the embodiment, the guider 42 that is used to punching pull bar 3 guiding is installed in the center cavity 41.
Among the embodiment, touch base 7 was fixedly connected with static contact seat 6 under leading electric pole 4 passed through.
Among the embodiment, leading electric pole 4 is fixedly connected with following touch base 7 through watchband fingertip 8.
Among the embodiment, leading electric pole 4 is copper hollow stem.
High-pressure vacuum breaker mechanical transmission structure of the present invention is mainly by vacuum interrupter moving contact 1, punching pull bar 3, and insulated tension pole 2 parts such as grade are formed; Punching pull bar 3 is processed by high-strength aluminum alloy material, and the one of which end processes screw thread and vacuum interrupter moving contact 1 is fastenedly connected, and the other end is hinged through bearing pin and insulated tension pole 2; Punching pull bar 3 can be up and down in leading electric pole 4 center cavities 41, is provided with the guider 42 of punching pull bar 3 in leading electric pole 4 center cavities 41; The leading electric pole 4 that passes instrument transformer is static main conductive circuit parts.
Advantage of the present invention is:
1. leading electric pole 4 separates with the machine driving loop: 4 of leading electric poles are as main electric-conductor but not mechanical transmissioning piece, and leading electric pole 4 is former to be substituted by the punching pull bar 3 that passes its center cavity 41 as mechanically operated function.Leading electric pole 4 quality are about 4.9 kilograms; And punching pull bar 3 materials are high strength alumin ium alloy; Its quality has only 0.5 kilogram; Therefore it is nearly 1/10th that these punching pull bar 3 movement inertias are only taken electric pole 4 as the leading factor, greatly reduces total movement inertia of drive system, effectively subdued the spring of circuit breaker switch on of moving contact;
2. after leading electric pole 4 becomes static main conductive circuit parts, electrically contact phenomenons such as stable, difficult generation loose contact;
3. impulsive force reduced when reduction machine driving movement inertia made machine driving, was of value to the reliability and stability of components and parts such as vacuum interrupter, had improved the product reliability ability, ensured the normal operation function of circuit breaker in lifetime.
The built-in vacuum circuit-breaker of specific embodiment-current transformer in a manner described carries out switch on of moving contact spring test: test result meets the HVAC vacuum circuit breaker relevant criterion fully all less than 2ms.The breaker mechanical life-span is brought up to 10000 times deciliters by original 5000 times deciliters.
Claims (8)
1. a vacuum circuit-breaker hangs down the closing rebound mechanical transmission structure; Comprise the leading electric pole (4), static contact seat (6), vacuum interrupter moving contact (1) and the insulated tension pole (2) that pass instrument transformer (5); It is characterized in that: described leading electric pole (4) is formed with the center cavity (41) that axially runs through, and should through described center cavity (41) matched in clearance punching pull bar (3) be arranged by leading electric pole (4); Described punching pull bar (3) one ends are fixedly connected with vacuum interrupter moving contact (1), and this punching pull bar (3) other end and insulated tension pole (2) are hinged; Described leading electric pole (4) is fixedly connected with described static contact seat (6); During closing rebound, it is static that described leading electric pole (4) keeps, and described punching pull bar (3) is axially motion in center cavity (41).
2. a kind of vacuum circuit-breaker according to claim 1 hangs down the closing rebound mechanical transmission structure, it is characterized in that: described punching pull bar (3) is the high-strength aluminum alloy material pull bar.
3. a kind of vacuum circuit-breaker according to claim 2 hangs down the closing rebound mechanical transmission structure, it is characterized in that: described punching pull bar (3) is through being threaded and described vacuum interrupter moving contact (1) fixes.
4. a kind of vacuum circuit-breaker according to claim 3 hangs down the closing rebound mechanical transmission structure, it is characterized in that: described punching pull bar (3) is through bearing pin and hinged cooperation of described insulated tension pole (2).
5. a kind of vacuum circuit-breaker according to claim 4 hangs down the closing rebound mechanical transmission structure, it is characterized in that: the guider (42) that is used to punching pull bar (3) guiding is installed in the described center cavity (41).
6. a kind of vacuum circuit-breaker according to claim 5 hangs down the closing rebound mechanical transmission structure, it is characterized in that: touch base (7) was fixedly connected with static contact seat (6) under described leading electric pole (4) passed through.
7. a kind of vacuum circuit-breaker according to claim 6 hangs down the closing rebound mechanical transmission structure, it is characterized in that: described leading electric pole (4) is fixedly connected with following touch base (7) through watchband fingertip (8).
8. a kind of vacuum circuit-breaker according to claim 7 hangs down the closing rebound mechanical transmission structure, it is characterized in that: described leading electric pole (4) is copper hollow stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101763824A CN102723227A (en) | 2012-06-01 | 2012-06-01 | Vacuum circuit breaker mechanical transmission structure with small switch-on oscillation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101763824A CN102723227A (en) | 2012-06-01 | 2012-06-01 | Vacuum circuit breaker mechanical transmission structure with small switch-on oscillation |
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| CN102723227A true CN102723227A (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012101763824A Pending CN102723227A (en) | 2012-06-01 | 2012-06-01 | Vacuum circuit breaker mechanical transmission structure with small switch-on oscillation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073799A (en) * | 1991-11-20 | 1993-06-30 | Gec阿尔斯托姆有限公司 | A kind of isolation circuit breakers that is used for pressing transformer station or Medium voltage switch or circuit breaker interval |
| CN202067719U (en) * | 2011-03-14 | 2011-12-07 | 平高集团有限公司 | Porcelain pole type sulfur hexafluoride circuit breaker |
| CN102290280A (en) * | 2011-07-06 | 2011-12-21 | 江苏省如高高压电器有限公司 | Vacuum circuit breaker body |
| CN202633158U (en) * | 2012-06-01 | 2012-12-26 | 宁波华通电器集团股份有限公司 | Mechanical transmission structure with low switching-on bounce for vacuum circuit breaker |
-
2012
- 2012-06-01 CN CN2012101763824A patent/CN102723227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073799A (en) * | 1991-11-20 | 1993-06-30 | Gec阿尔斯托姆有限公司 | A kind of isolation circuit breakers that is used for pressing transformer station or Medium voltage switch or circuit breaker interval |
| CN202067719U (en) * | 2011-03-14 | 2011-12-07 | 平高集团有限公司 | Porcelain pole type sulfur hexafluoride circuit breaker |
| CN102290280A (en) * | 2011-07-06 | 2011-12-21 | 江苏省如高高压电器有限公司 | Vacuum circuit breaker body |
| CN202633158U (en) * | 2012-06-01 | 2012-12-26 | 宁波华通电器集团股份有限公司 | Mechanical transmission structure with low switching-on bounce for vacuum circuit breaker |
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Application publication date: 20121010 |