CN203192686U - Low bounce vacuum explosion chamber structure - Google Patents
Low bounce vacuum explosion chamber structure Download PDFInfo
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- CN203192686U CN203192686U CN 201320030603 CN201320030603U CN203192686U CN 203192686 U CN203192686 U CN 203192686U CN 201320030603 CN201320030603 CN 201320030603 CN 201320030603 U CN201320030603 U CN 201320030603U CN 203192686 U CN203192686 U CN 203192686U
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- conductive rod
- chamber structure
- force
- saucer
- cannelure
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Abstract
The utility model discloses a low bounce vacuum explosion chamber structure characterized by comprising a cup stand (5); inner sides of the cup stand (5) are respectively connected with a fixed contact head (2) and a movable contact head (4); an inner side of the cup stand (5) is provided with an annular groove (7); an inner ring surrounded by the annular groove (7) is a middle bearing portion (9); and one end of a reinforcement rib (3) is connected with the middle bearing portion (9) of the cup stand (5). The low bounce vacuum explosion chamber structure can change bearing area under a condition in which pressure is not changed, thereby improving pressure intensity, so a workpiece can have microscale plastic deformation under the high pressure intensity effect, and acting force can be absorbed and removed. The acting force is reduced, so bounce time and bounce amplitude are reduced, thereby reducing contact head heating and fusion welding phenomenon generating probability, preventing aggravation of contact head electrical wear, and prolonging service life of the vacuum explosion chamber.
Description
Technical field
The utility model relates to a kind of low spring vacuum arc extinguish chamber structure, belongs to the power switchgear technical field.
Background technology
Vacuum interrupter in making process, the moving contact of vacuum interrupter and fixed contact rigidly connect touch until contact is stable contact moment till, moving contact and fixed contact deciliter process repeatedly can appear during this, i.e. bounce.Now the vacuum interrupter that uses at present is in making process, and owing to rigid collision produces spring, bounce time is long, the spring amplitude is big, can't satisfy the mechanical parameter requirement of vacuum circuit-breaker between two contacts.This bounce not only influences stability and the reliability of vacuum interrupter, and in making process, because moving contact and fixed contact break distance are little, electric arc can not extinguish, the indoor arc energy of vacuum extinction is accumulated rapidly, be easy to generate the contact heating, the melting welding phenomenon, cause the contact electrical wear to increase the weight of, have a strong impact on break performance and the useful life of vacuum interrupter, simultaneously, contact closing rebound overlong time, can make the bellows of vacuum interrupter be subjected to forced vibration and crackle occur, harm bellows useful life, cause vacuum interrupter gas leakage, thereby influence the useful life of vacuum interrupter.
Summary of the invention
The purpose of this utility model is: a kind of low spring vacuum arc extinguish chamber structure is provided, and the existing vacuum interrupter bounce time of solution is long, the spring amplitude is big, is easy to generate problems such as contact heating, melting welding phenomenon.
The technical solution of the utility model: a kind of low spring vacuum arc extinguish chamber structure, include saucer, the saucer medial surface is connected with fixed contact, moving contact respectively, the medial surface that saucer connects is provided with cannelure, cannelure around inner ring be middle part of the force, reinforcement one end connects the middle part of the force on the saucer.
Above-mentioned low spring vacuum arc extinguish chamber structure, described cannelure around middle part of the force be provided with location notch.
Above-mentioned low spring vacuum arc extinguish chamber structure, the degree of depth of described cannelure is 2～20mm.
Above-mentioned low spring vacuum arc extinguish chamber structure, the diameter d of described middle part of the force is 15～60mm.
Above-mentioned low spring vacuum arc extinguish chamber structure, described saucer is connected with moving conductive rod with static conductive rod respectively, and static conductive rod, moving conductive rod are provided with groove.
Above-mentioned low spring vacuum arc extinguish chamber structure, the width of the groove on the described static conductive rod is that L1, the degree of depth are H1, the width of the groove on the moving conductive rod is that L2, the degree of depth are H2, L1, L2 size are 2～50mm, the H1 size is 1/2～1/4 times of corresponding fluting place moving conductive rod diameter d 1, and the H2 size is 1/2～1/4 times of corresponding fluting place static conductive rod diameter d 2.
The beneficial effects of the utility model: in making process, moving contact contacts with fixed contact, after the contact, contact passes to reaction force middle part of the force on the saucer and offers reeded conducting rod by reinforcement, the saucer lifting surface area that offers cannelure diminishes, middle part of the force easily produces micro-plastic deformation under the effect that is subjected to 500kg left and right sides reaction force, absorb in the deformation process and eliminate reaction force, offering reeded conducting rod intensity reduces, micro-plastic deformation takes place in loading process easily, also absorb the partial reaction power of eliminating, active force reduces, thereby causes bounce time to shorten, the spring amplitude reduces, and has reduced the contact heating, the probability that the melting welding phenomenon occurs, avoid the contact electrical wear to increase the weight of, prolonged the useful life of vacuum interrupter.
Description of drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is design of part schematic diagram of the present utility model;
Accompanying drawing 3 is design of part schematic diagram of the present utility model:
Accompanying drawing 4 is design of part schematic diagram of the present utility model;
The 1-static conductive rod, 2-fixed contact, 3-reinforcement, 4-moving contact, 5-saucer, 6-moving conductive rod, 7-cannelure, part of the force in the middle of the 8-location notch, 9-, 10-groove.
Embodiment
Embodiment 1 of the present utility model: as shown in Figures 1 and 2, include saucer 5, saucer 5 lateral surfaces are connected with static conductive rod 1, moving conductive rod 6, contact base 5 medial surfaces are connected with fixed contact 2, moving contact 4, the medial surface that saucer 5 connects is provided with cannelure 7, cannelure 7 around inner ring be middle part of the force 9, cannelure 7 around middle part of the force 9 be provided with location notch 8, location notch place in the middle of reinforcement 3 one ends snap on the part of the force 9, the other end is connected with fixed contact 2, moving contact 4, respectively is provided with a groove 10 on static conductive rod 1, the moving conductive rod 6.
Vacuum interrupter is in making process, and moving contact 4 contacts with fixed contact 2, produces certain reaction force, and moving contact 4 and fixed contact 2 pass to moving conductive rod 6 and static conductive rod 1 after by reinforcement 3 reaction force being passed to saucer 5 again.Existing vacuum interrupter is because saucer 5, moving conductive rod 6 is thicker with the copper bar size of static conductive rod 1, lifting surface area is bigger, after the effect that is subjected to reaction force, be difficult to deform, reaction force is difficult to be absorbed elimination, otherwise reaction force acts on moving contact 4 and the fixed contact 2, between two contacts owing to rigid collision produces spring, because active force is difficult to eliminate, so bounce time is long, the spring amplitude is big.Low spring vacuum arc extinguish chamber structure provided by the utility model, its saucer 5 can be made as an absolute construction separately, also can make with static conductive rod 1 or moving conductive rod 6 and become one, offer cannelure 7 at saucer 5, and reinforcement 3 is stuck on the location notch 8, location notch 8 be located at cannelure 7 around middle part of the force 9 on, because reinforcement 3 mainly plays transmission power in making process, the middle part of the force 9 that namely is connected with reinforcement 3 is lifting surface area, makes that the lifting surface area on the saucer 5 diminishes.Under the effect of the active force about the 500kg that the middle part of the force 9 on the saucer 5 produces in being subjected to making process, be easy to generate the plastic deformation of trace, and all can absorb the partial reaction power that eliminates in the process of distortion, make the contact between two contacts change Elastic Contact into by the rigidity contact, static conductive rod 1, moving conductive rod 6 also can be subjected to the effect of reaction force in the spring process, by at static conductive rod 1, offer groove 10 on the moving conductive rod 6, reduce the intensity of conducting rod, make it that micro-plastic deformation take place in loading process easily, thereby absorb the partial reaction power of eliminating.Micro-plastic deformation by middle part of the force 9 and moving conductive rod 6, static conductive rod 1 in contact process, make reaction force constantly be absorbed elimination, so reduced the bounce time of vacuum interrupter, weakened its spring amplitude, prolong the useful life of vacuum interrupter, satisfied country to the mechanical parameter requirement of Related product.
The utility model namely is under the constant situation of pressure, by changing lifting surface area, thereby increases pressure, impels workpiece that micro-plastic deformation takes place under the effect of High Voltage, and absorption eliminates active force.When offering cannelure 7, if cannelure 7 degree of depth of offering are shallow excessively or too away from the circle centre position of saucer 5, just be difficult to change the size of its lifting surface area, in the time spent of doing that is subjected to reaction force, saucer 5 is difficult to deform, and also just can not absorb to eliminate active force; If cannelure 7 degree of depth of offering are dark excessively or too near the circle centre position of saucer 5, in the time spent of doing that is subjected to reaction force, it is excessive that plastic deformation takes place under the effect of active force saucer 5, changed the performance of entire mechanism.Therefore the size of the diameter d of part of the force is between 15～60mm in the middle of should guaranteeing when offering cannelure 7, and the degree of depth of cannelure 7 should be between 2～20mm, and width is unsuitable wide, the wide electric conductivity that will influence static conductive rod 1 and moving conductive rod 6.When offering groove 10, if its degree of depth is dark excessively, the excessive situation that when stressed, easily deforms, the degree of depth is too small, is difficult to cause micro-plastic deformation, so the size of groove 10 is also had certain requirement.The width of groove 10 correspondences on the moving conductive rod 6 is L1, the width of groove 10 correspondences on the static conductive rod 1 is L2, the scope of L1, L2 is 2～50mm, the depth H 1 of the groove 10 on the moving conductive rod 6 is 1/2～1/4 times of moving conductive rod diameter d 1 at corresponding fluting place, and the depth H 2 of the groove 10 on the static conductive rod 1 is 1/2～1/4 times of static conductive rod diameter d 2 at corresponding fluting place.
Embodiment 2 of the present utility model: the locations of structures of this low spring vacuum interrupter with and operation principle as described in the embodiment 1, for guaranteeing that middle part of the force 9 is when being subjected to reaction force acts, micro-plastic deformation can take place and can guarantee that its distortion can be not excessive in it, to such an extent as to change the performance of entire mechanism, therefore when offering cannelure 7, the size of the diameter d of part of the force 9 is in the middle of can making: 30mm, and the degree of depth of cannelure 7 is: 10mm.When offering groove 10, the width of groove 10 correspondences on the moving conductive rod 6 is L1, the width of groove 10 correspondences on the static conductive rod 1 is L2, the scope of L1, L2 is 2～50mm, the depth H 1 of the groove 10 on the moving conductive rod 6 is 1/2～1/4 times of moving conductive rod diameter d 1 at corresponding fluting place, and the depth H 2 of the groove 10 on the static conductive rod 1 is 1/2～1/4 times of static conductive rod diameter d 2 at corresponding fluting place.
Embodiment 3 of the present utility model: when offering cannelure 7, the size of the diameter d of part of the force 9 is in the middle of can making: 45mm, and the degree of depth of cannelure 7 is: 15mm.When offering groove 10, the width of groove 10 correspondences on the moving conductive rod 6 is L1, the width of groove 10 correspondences on the static conductive rod 1 is L2, the scope of L1, L2 is 2～50mm, the depth H 1 of the groove 10 on the moving conductive rod 6 is 1/3 times of moving conductive rod diameter d 1 at corresponding fluting place, and the depth H 2 of the groove 10 on the static conductive rod 1 is 1/3 times of static conductive rod diameter d 2 at corresponding fluting place.
Claims (6)
1. one kind is hanged down the spring vacuum arc extinguish chamber structure, it is characterized in that: include saucer (5), saucer (5) medial surface is connected with fixed contact (2), moving contact (4) respectively, the medial surface that saucer (5) connects is provided with cannelure (7), cannelure (7) around inner ring be middle part of the force (9), reinforcement (3) one ends connect the middle part of the force (9) on the saucers (5).
2. low spring vacuum arc extinguish chamber structure according to claim 1 is characterized in that: described cannelure (7) around middle part of the force (9) be provided with location notch (8).
3. low spring vacuum arc extinguish chamber structure according to claim 1, it is characterized in that: the degree of depth of described cannelure (7) is 2～20mm.
4. low spring vacuum arc extinguish chamber structure according to claim 1 is characterized in that: the diameter d of part of the force (9) is 15～60mm in the middle of described.
5. low spring vacuum arc extinguish chamber structure according to claim 1, it is characterized in that: saucer (5) is connected with moving conductive rod (6) with static conductive rod (1) respectively, and static conductive rod (1), moving conductive rod (6) are provided with groove (10).
6. low spring vacuum arc extinguish chamber structure according to claim 5, it is characterized in that: the width of the groove (10) on the static conductive rod (1) is that L1, the degree of depth are H1, the width of the groove on the moving conductive rod (6) is that L2, the degree of depth are H2, L1, L2 size are 2～50mm, the H1 size is 1/2～1/4 times of corresponding fluting place moving conductive rod (6) diameter d 1, and the H2 size is 1/2～1/4 times of corresponding fluting place static conductive rod (1) diameter d 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030603 CN203192686U (en) | 2013-01-21 | 2013-01-21 | Low bounce vacuum explosion chamber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320030603 CN203192686U (en) | 2013-01-21 | 2013-01-21 | Low bounce vacuum explosion chamber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203192686U true CN203192686U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320030603 Expired - Fee Related CN203192686U (en) | 2013-01-21 | 2013-01-21 | Low bounce vacuum explosion chamber structure |
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| CN (1) | CN203192686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050332A (en) * | 2013-01-21 | 2013-04-17 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Low-bounce vacuum arc extinguish chamber structure |
-
2013
- 2013-01-21 CN CN 201320030603 patent/CN203192686U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050332A (en) * | 2013-01-21 | 2013-04-17 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | Low-bounce vacuum arc extinguish chamber structure |
| CN103050332B (en) * | 2013-01-21 | 2016-11-23 | 中国振华电子集团宇光电工有限公司（国营第七七一厂） | A kind of low spring vacuum extinction cell 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: 20130911 Termination date: 20190121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |