CN203910659U - Vacuum circuit breaker - Google Patents
Vacuum circuit breaker Download PDFInfo
- Publication number
- CN203910659U CN203910659U CN201420340879.XU CN201420340879U CN203910659U CN 203910659 U CN203910659 U CN 203910659U CN 201420340879 U CN201420340879 U CN 201420340879U CN 203910659 U CN203910659 U CN 203910659U
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- CN
- China
- Prior art keywords
- fixed contact
- cap
- conducting rod
- insulated cap
- elastic insulated
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- 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 - Fee Related
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The utility model discloses a vacuum circuit breaker, which comprises a vacuum arc-extinguishing chamber, an operating mechanism and a rack. The vacuum arc-extinguishing chamber comprises a ceramic shell, a main shielding cover arranged inside the ceramic shell, a static contact arranged in a penetrating mode in the main shielding cover and a movable contact arranged in a penetrating mode in the main shielding cover and with one end oppositely arranged with the static contact. The movable contact is in linkage connection with the operating mechanism. One end, provided with the static contact, of an upper conductive pole is arranged in a penetrating mode in the main shielding cover, and the end is sleeved with an elastic insulated cap. A lower conductive pole is fixedly connected with a butting insulated cap concentrically arranged with the lower conductive pole. One side at which the elastic insulated cap deviates from the butting insulated cap of the upper conductive pole is sleeved with an elastic piece. Two ends of the elastic piece are fixedly connected with the elastic insulated cap and the main shielding cover. The disconnection speed of the static contact and the movable contact is quick, and the working stability of the vacuum arc-extinguishing chamber is effectively enhanced.
Description
Technical field
The utility model relates to high voltage electrical apparatus technical field, especially relates to a kind of vacuum circuit-breaker.
Background technology
In High-Voltage Electrical Appliances field, high-pressure vacuum breaker is the core component in complete equipment of high voltage switch, is the electric equipment for control and protection electric power system.Vacuum circuit-breaker mainly comprises vacuum interrupter, operating mechanism and support, vacuum interrupter and operating mechanism are all arranged in frame, need the circuit access vacuum interrupter of break-make, vacuum interrupter mainly comprises the porcelain shell, fixed contact and the moving contact that play insulating effect, the moving contact of operating mechanism and vacuum interrupter is connected, control connection, disconnection between the indoor upper moving contact of vacuum extinction, thereby realize, circuit breaker closes and turn-off current.
The structure of the vacuum interrupter of at present common vacuum short-circuiting device as shown in Figure 1.As seen from Figure 1, vacuum interrupter is by porcelain shell 101, is fixed on upper end metal sealing ring 104 on porcelain shell 101 and lower end metal sealing ring 105 and the upper end cover 109 and the bottom end cover 110 that connect with described upper end metal sealing ring 104 and lower end metal sealing ring 105 respectively form.Be provided with in the enclosure conducting rod 120 and lower conducting rod 122.Wherein, one end of upper conducting rod 120 and upper end cover 109 are fixing, and the other end is provided with fixed contact 136; One end of lower conducting rod 202 is provided with moving contact 138, and the other end slides through the through hole of bottom end cover 110 by lower end fairlead 106.Meanwhile, be also provided with lower bellows 131 on lower conducting rod 122, lower conducting rod 122 is connected on bottom end cover 110 by lower bellows 131.Lower bellows 131 has scalability, the indoor sealing of vacuum extinction can ensure that moving contact 138 and lower conducting rod 122 move time.One end that lower conducting rod 122 stretches out bottom end cover 110 is connected with the insulated tension pole 107 of vacuum circuit-breaker by contact spring 140, and is connected on breaker operation mechanism 150.In addition, outside lower bellows 131, be provided with lower bellows shield cover 132, and be provided with main shield cover 130 outside fixed contact 136 and moving contact 138.
The vacuum circuit-breaker of this set, in the time of separating brake, is to rely on operating mechanism action, thereby and then drives moving contact action by contact spring and operating mechanism interlock.Start action from operating mechanism and realize separating to moving contact and fixed contact and need the action of long period transmission, the separating rate between upper, moving contact is crossed and will be caused slowly the reaction speed of vacuum circuit-breaker entirety and working stability degree to reduce.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of vacuum circuit-breaker, and the fixed contact of this kind of vacuum circuit-breaker and the breaking speed of moving contact are fast, has effectively strengthened the working stability degree of vacuum interrupter, long service life, convenient for installation and maintenance.
For achieving the above object, the utility model provides following technical scheme:
A kind of vacuum circuit-breaker, comprise vacuum interrupter, operating mechanism and frame, described vacuum interrupter comprises porcelain shell, be located at main shield cover in porcelain shell, be arranged in the fixed contact of main shield cover and be arranged in main shield cover and one end and fixed contact are oppositely arranged moving contact, described moving contact and operating mechanism are connected, described fixed contact comprises fixed contact and the upper conducting rod being fixedly connected with it, one end that described upper conducting rod is provided with fixed contact is arranged in main shield cover, and this end is arranged with elastic insulated cap;
Described moving contact comprises moving contact and the lower conducting rod being fixedly connected with it, and described fixed contact and moving contact are oppositely arranged, and described lower conducting rod is fixedly connected with and becomes with it the conflict insulator cap arranging with one heart;
The opening of the opening of described elastic insulated cap and conflict insulator cap arrange in opposite directions and opening part cross-sectional area suitable, described upper conducting rod is arranged with elastic component in conflict a dorsad side of insulator cap of elastic insulated cap, and described elastic component two ends are fixedly connected with main shield cover with elastic insulated cap respectively;
Described elastic component is the inner chamber of fixed contact in elastic insulated cap in the time of relaxation state, and described elastic component fixed contact in the time of compressive state protrudes from the inner chamber of elastic insulated cap.
By adopting technique scheme, elastic insulated cap is set and makes to adopt between fixed contact and moving contact elastic insulated isolation, conflict insulator cap is set, make moving contact mutually conflict and but can mutually not conduct electricity in the time driving by operating mechanism and fixed contact conducts electricity and between elastic insulated cap, elastic insulated cap and conflict insulator cap are all arranged to insulation, in the time of fixed contact and moving contact action, also can carry out preliminary electromagnetic shielding to both; In the time closing a floodgate, elastic component is in relaxation state, the inner chamber of fixed contact in elastic insulated cap, operating mechanism drives lower conducting rod motion, thereby drive moving contact and conflict insulator cap to move towards fixed contact, conflict insulator cap first and elastic insulated cap is conflicted and then compression elastic piece exposes fixed contact, and then fixed contact contacts with moving contact, and combined floodgate completes; When separating brake, operating mechanism discharges the pressure to lower conducting rod, the compression stress that elastic component is subject to is discharged, thereby drive elastic insulated cap to move towards moving contact, and then make elastic insulated calotte on fixed contact and make its inner chamber in elastic insulated cap, thereby reach the isolation to fixed contact and moving contact; By the elastic-restoring force of elastic component the disjunction of compounding practice mechanism, accelerate the breaking speed of fixed contact and moving contact, strengthen the working stability degree of vacuum interrupter, thereby improved the useful life of vacuum circuit-breaker, convenient for installation and maintenance.
Further improvement as technique scheme: the inner chamber of described elastic insulated cap is column type, described upper conducting rod convexes with spacing ring in a side of fixed contact relative resilient insulator cap, and the external diameter of described spacing ring is greater than the internal diameter at elastic insulated cap and the sheathed place of upper conducting rod.
By adopting technique scheme, the elastic insulated cap inner chamber of column type is more prone to processing, moreover all belong to column type with upper conducting rod, more smooth and easy and convenient when on elastic insulated shade, conducting rod moves, can not cause because both shapes are not adaptive elastic insulated cap in the time of separating brake, to isolate the speed of fixed contact and moving contact slack-off; The setting of spacing ring can be carried out the impulse stroke of elastic insulated cap spacing, effectively controls separating brake and close a floodgate to complete within the set time.
The utility model is further set to: described elastic component is spring.
By adopting technique scheme, spring applicability is wide and draw materials conveniently, is set in while coordinating elastic insulated cap action on conducting rod convenient.
Brief description of the drawings
Fig. 1 is the structural representation of vacuum circuit-breaker in background technology;
Fig. 2 is the front view of the utility model vacuum circuit-breaker;
Structural representation when Fig. 3 is the utility model vacuum circuit-breaker combined floodgate;
Fig. 4 is the A portion enlarged drawing of Fig. 3;
Structural representation when Fig. 5 is the utility model vacuum circuit-breaker separating brake;
Fig. 6 is the B portion enlarged drawing of Fig. 5.
Reference numeral:
2, vacuum interrupter; 21, porcelain shell; 22, main shield cover; 3, operating mechanism; 31, close a point handle; 4, elastic insulated cap; 5, fixed contact; 51, upper conducting rod; 52, fixed contact; 53, spacing ring; 6, conflict insulator cap; 7, moving contact; 71, lower conducting rod; 72, moving contact; 8, elastic component.
Embodiment
With reference to Fig. 2 to Fig. 6, the utility model vacuum circuit-breaker embodiment is described further.
A kind of vacuum circuit-breaker, comprise vacuum interrupter 2, operating mechanism 3 and frame, described operating mechanism 3 is provided with and closes point handle 31, described vacuum interrupter 2 comprises porcelain shell 21, be located at the main shield cover 22 in porcelain shell 21, be arranged in the fixed contact 5 of main shield cover 22 and the moving contact 7 for linking with operating mechanism 3, described moving contact 7 is arranged in main shield cover 22 and one end and fixed contact 5 are oppositely arranged, described fixed contact 5 comprises fixed contact 52 and the upper conducting rod 51 being fixedly connected with it, one end that described upper conducting rod 51 is provided with fixed contact 52 is arranged in main shield cover 22, and this end is arranged with elastic insulated cap 4,
Described moving contact 7 comprises moving contact 72 and the lower conducting rod 71 being fixedly connected with it, and described fixed contact 52 and moving contact 72 are oppositely arranged, and described lower conducting rod 71 is fixedly connected with and becomes with it the conflict insulator cap 6 arranging with one heart;
The opening of the opening of described elastic insulated cap 4 and conflict insulator cap 6 arrange in opposite directions and opening part cross-sectional area suitable, described upper conducting rod 51 is arranged with elastic component 8 in conflict a dorsad side of insulator cap 6 of elastic insulated cap 4, and described elastic component 8 two ends are fixedly connected with main shield cover 22 with elastic insulated cap 4 respectively;
Described elastic component 8 is the inner chamber of fixed contact 52 in elastic insulated cap 4 in the time of relaxation state, and described elastic component 8 fixed contact 52 in the time of compressive state protrudes from the inner chamber of elastic insulated cap 4.
By adopting technique scheme, elastic insulated cap 4 is set to be made to adopt elastic insulated isolation between fixed contact 5 and moving contact 7, conflict insulator cap 6 is set, make moving contact 7 mutually conflict and but can mutually not conduct electricity in the time driving by operating mechanism 3 and fixed contact 5 conducts electricity and between elastic insulated cap 4, elastic insulated cap 4 and conflict insulator cap 6 are all arranged to insulation, in the time that fixed contact 5 and moving contact 7 move, also can carry out preliminary electromagnetic shielding to both; Before combined floodgate, elastic component 8 is in relaxation state, pull and close point handle 31 and carry out after feed motion, the inner chamber of fixed contact 52 in elastic insulated cap 4, operating mechanism 3 drives lower conducting rod 71 to move, thereby drive moving contact 72 and conflict insulator cap 6 to move towards fixed contact 5, conflict insulator cap 6 first and elastic insulated cap 4 is conflicted and then compression elastic piece 8 exposes fixed contact 52, and then fixed contact 52 contacts with moving contact 72, and combined floodgate completes; When separating brake, pull deciliter handle 31, operating mechanism 3 discharges the pressure to lower conducting rod 71, the compression stress that elastic component 8 is subject to is discharged, thereby drive elastic insulated cap 4 to move towards moving contact 7, and then make elastic insulated cap 4 cover on fixed contact 5 and make its inner chamber in elastic insulated cap 4, thereby reach the isolation to fixed contact 5 and moving contact 7; By the elastic-restoring force of elastic component 8 disjunction of compounding practice mechanism 3, accelerate the breaking speed of fixed contact 5 and moving contact 7, the working stability degree of having strengthened vacuum interrupter (it should be noted that herein, the making material of elastic insulated cap 4 and conflict insulator cap 6 is the resistant to elevated temperatures insulating material of energy preferably, such as graphite nylon and pottery etc., pottery is widely used in vacuum circuit-breaker, preferably ceramic is as the making material of elastic insulated cap 4 and conflict insulator cap 6 herein), thereby improve the useful life of vacuum circuit-breaker, convenient for installation and maintenance.
The inner chamber of described elastic insulated cap 4 is column type, and described upper conducting rod 51 convexes with spacing ring 53 in a side of fixed contact 52 relative resilient insulator caps 4, and the external diameter of described spacing ring 53 is greater than the internal diameter at elastic insulated cap 4 and upper conducting rod 51 sheathed places.By adopting technique scheme, elastic insulated cap 4 inner chambers of column type are more prone to processing, moreover all belong to column type with upper conducting rod 51, elastic insulated cap 4 along on conducting rod 51 more smooth and easy and convenient while moving, can not cause because both shapes are not adaptive elastic insulated cap 4 in the time of separating brake, to isolate the speed of fixed contact 5 and moving contact 7 slack-off; The setting of spacing ring 53 can be carried out the impulse stroke of elastic insulated cap 4 spacing, effectively controls separating brake and close a floodgate to complete within the set time.
Described elastic component 8 is spring, and certainly elastic component 8 also can be selected elastomeric rubber blanket or shell fragment etc., and spring applicability is wide and draw materials conveniently, is set in while coordinating elastic insulated cap 4 to move on conducting rod 51 conveniently, and preferably spring is as elastic component 8.
The above is only preferred implementation of the present utility model, and protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. a vacuum circuit-breaker, comprise vacuum interrupter, operating mechanism and frame, described vacuum interrupter comprises porcelain shell, be located at main shield cover in porcelain shell, be arranged in the fixed contact of main shield cover and be arranged in main shield cover and one end and fixed contact are oppositely arranged moving contact, described moving contact and operating mechanism are connected, it is characterized in that: described fixed contact comprises fixed contact and the upper conducting rod being fixedly connected with it, one end that described upper conducting rod is provided with fixed contact is arranged in main shield cover, and this end is arranged with elastic insulated cap;
Described moving contact comprises moving contact and the lower conducting rod being fixedly connected with it, and described fixed contact and moving contact are oppositely arranged, and described lower conducting rod is fixedly connected with and becomes with it the conflict insulator cap arranging with one heart;
The opening of the opening of described elastic insulated cap and conflict insulator cap arrange in opposite directions and opening part cross-sectional area suitable, described upper conducting rod is arranged with elastic component in conflict a dorsad side of insulator cap of elastic insulated cap, and described elastic component two ends are fixedly connected with main shield cover with elastic insulated cap respectively;
Described elastic component is the inner chamber of fixed contact in elastic insulated cap in the time of relaxation state, and described elastic component fixed contact in the time of compressive state protrudes from the inner chamber of elastic insulated cap.
2. vacuum circuit-breaker according to claim 1, it is characterized in that: the inner chamber of described elastic insulated cap is column type, described upper conducting rod convexes with spacing ring in a side of fixed contact relative resilient insulator cap, and the external diameter of described spacing ring is greater than the internal diameter at elastic insulated cap and the sheathed place of upper conducting rod.
3. vacuum circuit-breaker according to claim 2, is characterized in that: described elastic component is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340879.XU CN203910659U (en) | 2014-06-24 | 2014-06-24 | Vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420340879.XU CN203910659U (en) | 2014-06-24 | 2014-06-24 | Vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910659U true CN203910659U (en) | 2014-10-29 |
Family
ID=51784914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420340879.XU Expired - Fee Related CN203910659U (en) | 2014-06-24 | 2014-06-24 | Vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203910659U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331544A (en) * | 2017-06-30 | 2017-11-07 | 中国西电电气股份有限公司 | A kind of through-flow contact stopping means in dynamic attachment structure |
-
2014
- 2014-06-24 CN CN201420340879.XU patent/CN203910659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331544A (en) * | 2017-06-30 | 2017-11-07 | 中国西电电气股份有限公司 | A kind of through-flow contact stopping means in dynamic attachment structure |
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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: 20141029 Termination date: 20170624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |