CN107833782B - Vacuum arc-extinguishing chamber with single movable fracture - Google Patents
Vacuum arc-extinguishing chamber with single movable fracture Download PDFInfo
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- CN107833782B CN107833782B CN201711236999.XA CN201711236999A CN107833782B CN 107833782 B CN107833782 B CN 107833782B CN 201711236999 A CN201711236999 A CN 201711236999A CN 107833782 B CN107833782 B CN 107833782B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The invention provides a vacuum arc-extinguishing chamber with a single movable fracture, and belongs to the technical field of circuit breakers. The vacuum arc-extinguishing chamber fixing fracture insulating property is poor. The vacuum arc extinguish chamber comprises a movable fracture formed by a fixed contact and a movable contact, and a first fixed fracture and a second fixed fracture formed by a shielding case, wherein the first fixed fracture and the second fixed fracture are used for jointly bearing recovery voltage on a single movable fracture, the first fixed fracture is located outside the movable fracture, and the second fixed fracture is far away from the movable fracture. The vacuum arc extinguish chamber has good insulating property of the fixed fracture, and can effectively avoid the occurrence of heavy breakdown.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and relates to an arc extinguish chamber, in particular to a vacuum arc extinguish chamber with a single movable fracture.
Background
The vacuum circuit breaker has the advantages of long mechanical life, no maintenance, environmental friendliness and the like, and is widely applied to the switching of the reactive compensation capacitor bank in the medium-voltage distribution system. The contact can generate high-frequency high-amplitude inrush current in the closing process, and the surface of the contact can be subjected to pre-breakdown electric arc to generate more serious fusion welding; in the subsequent opening process, the moving contact and the fixed contact are separated to cause the fusion welding area to be pulled apart and broken, and the surface conditions of the moving contact and the fixed contact are degraded. After the on-off current crosses zero, the two ends of the arc extinguish chamber bear the recovery voltage with the direct current property, and the peak recovery voltage can reach 2 times of the system voltage Um for a single-phase capacitor bank or a three-phase neutral point grounding capacitor bank; for a three-phase neutral ungrounded capacitor bank, the peak recovery voltage can be 2.5 times the system voltage Um. This results in the vacuum circuit breaker possibly having a re-breakdown phenomenon after the capacitive current is cut off, and even a delayed re-breakdown phenomenon may occur within several seconds after the zero crossing of the cut-off current. The overvoltage generated by the heavy breakdown can seriously damage the switch and other power system equipment, and even cause casualties. Research shows that the heavy breakdown phenomenon is closely related to high-frequency inrush current generated in the switching process of a capacitor bank, and the reason is that the switching-on inrush current seriously and locally ablates the surface of a contact in a high-energy pre-breakdown arc mode in the switching-on process, so that the contact is subjected to fusion welding, the surface structure of the contact is damaged, and the field emission coefficient of the surface of the contact is greatly increased.
At present, aiming at the problems, the scheme of Wangjianghua and Liuqinquan of the Sian traffic university is as follows:
a vacuum interrupter "a vacuum interrupter with fixed fracture" [ official working number: CN104145318A ], discloses the following scheme: the vacuum interrupter with the fixed fracture can form a vacuum load switch, a vacuum contactor or a vacuum circuit breaker together with an operating mechanism, and comprises a closed space which is composed of an insulating shell, a movable end cover and a fixed end cover and is internally in a vacuum state, wherein a movable fracture and a fixed fracture formed by a shielding case are arranged in the closed space, and the movable fracture is composed of a pair of movable and fixed contacts and used for bearing rated current and cutting off a capacitive load to finish the breaking performance of the vacuum interrupter; the fixed fracture is composed of a pair of shielding cases fixed on the movable end cover and the fixed end cover, when the movable contact and the fixed contact which form the movable fracture reach a full-open distance position, the movable contact and the fixed contact enter the shielding cases which form the fixed fracture, and at the moment, the recovery voltage of the direct current property after the capacitive current is disconnected is born by the fixed fracture, so that the insulating property of the vacuum arc extinguish chamber is realized.
A vacuum interrupter "has fixed fracture and has contact and vacuum interrupter" that short-circuit current opens and shuts ability with fixed fracture [ the official working number: CN105679597A ], discloses the following scheme: the contact comprises a group of fixed fracture contacts and a group of movable fracture contacts, wherein the movable fracture contacts are positioned in the fixed fracture contacts in a brake-off state; the vacuum arc extinguish chamber comprises a contact with a fixed fracture and with short-circuit current breaking capacity, a shell and a shielding case; the problems that the existing composite magnetic field contact structure and other vacuum arc-extinguishing chambers designed aiming at capacitive current breaking are complex in structure, lack of magnetic field control of vacuum electric arc and the like are solved.
According to the technical scheme, although the fixed fracture contact shields and protects the electric field of the movable fracture contact, the influence of the defect formed on the surface of the movable fracture contact in the capacitive closing process on breakdown is avoided, the influence of the transient process between the moving contact and the static contact on the insulation strength between the fixed fractures cannot be guaranteed in the switching process of the capacitor bank, and the insulation strength of the fixed fractures cannot be effectively guaranteed.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a capacitor-switching arc-extinguishing chamber, which aims to solve the technical problems that: how to ensure the insulation strength of the fixed fracture.
The purpose of the invention can be realized by the following technical scheme: the vacuum arc-extinguishing chamber with the single movable fracture comprises the movable fracture formed by a fixed contact and a movable contact, and a first fixed fracture and a second fixed fracture formed by a shielding case.
The working principle of the vacuum arc-extinguishing chamber with the single movable fracture is as follows: when the vacuum interrupter opens and shuts, the static contact is kept away from gradually to the moving contact, reach full-open distance position when the moving contact, because first fixed fracture is located the movable fracture outside, the recovery voltage of the direct current nature after the capacitive current opens and shuts just is transferred to first fixed fracture by movable fracture completely this moment, owing to set up the fixed fracture of second, and movable fracture is kept away from to this fixed fracture of second, the recovery voltage of first fixed fracture can be shared to the fixed fracture of second, can reduce the recovery voltage on the first fixed fracture, protect first fixed fracture not by the breakdown scaling loss, thereby ensure the bulk dielectric strength of first fixed fracture and the fixed fracture of second, effectively reduce vacuum interrupter capacitive current and break and restrik probability.
In the vacuum arc-extinguishing chamber with the single movable fracture, the shielding case comprises a fixed end cover cylinder, a movable end cover cylinder and an intermediate cover cylinder arranged between the fixed end cover cylinder and the movable end cover cylinder, the intermediate cover cylinder is provided with a near movable end which is away from the end of the movable end cover cylinder by a certain distance and a near stationary end which is away from the end of the fixed end cover cylinder by a certain distance, the near stationary end is far away from the near movable end, the near movable end and the movable end cover cylinder form a first fixed fracture, the near stationary end and the fixed end cover cylinder form a second fixed fracture, the fixed contact is located in the near movable end of the intermediate cover cylinder, and the movable contact is located in the end of the movable end cover cylinder when the movable contact is at the maximum opening distance.
A large amount of metal particles with charges generated by a movable fracture formed between a static contact and a movable contact in the process of opening and closing a vacuum arc-extinguishing chamber can be diffused and attached to a first fixed fracture formed by a near moving end and an end part of a moving end shield cylinder, then the charges are gradually transferred to a near static end through the near moving end of a middle shield, so that the total charge amount of the near moving end is reduced, the first fixed fracture and the second fixed fracture share the recovery voltage, the first fixed fracture is prevented from being broken down due to high recovery voltage, the integral insulation strength of the first fixed fracture and the second fixed fracture is ensured, and the maximum opening distance is the maximum distance between the movable contact and the static contact.
In the vacuum arc-extinguishing chamber with the single movable fracture, the caliber of the near static end of the middle shield cylinder is larger than that of the end part of the static end shield cylinder, and the end part of the static end shield cylinder extends into the near static end of the middle shield cylinder. The bore of the nearly quiet end of middle cover section of thick bamboo is greater than the bore of the tip of quiet end cover section of thick bamboo, and the tip of the quiet end cover section of thick bamboo of being convenient for stretches into the nearly quiet end of middle cover section of thick bamboo, guarantees simultaneously that the tip of quiet end cover section of thick bamboo and the nearly quiet end of middle cover section of thick bamboo have a fixed clearance between, and this fixed clearance forms the fixed fracture of second for exert the recovery voltage on first fixed fracture when sharing vacuum interrupter and cut off, realize good insulating properties.
In the vacuum arc-extinguishing chamber with the single movable fracture, the aperture of the near static end of the middle shield cylinder is smaller than the aperture of the end part of the static end shield cylinder, and the near static end part of the middle shield cylinder extends into the end part of the static end shield cylinder. The bore of the nearly quiet end of middle cover section of thick bamboo is less than the bore of the tip of quiet end cover section of thick bamboo, and the nearly quiet end part of the middle cover section of thick bamboo of being convenient for stretches into the tip of quiet end cover section of thick bamboo, guarantees simultaneously to have a fixed clearance between the tip of quiet end cover section of thick bamboo and the nearly quiet end of middle cover section of thick bamboo, and this fixed clearance forms the fixed fracture of second for exert the recovery voltage on first fixed fracture when sharing vacuum interrupter and cut off, realize good insulating properties.
In the vacuum arc-extinguishing chamber with the single movable fracture, the near static end of the middle cover cylinder is provided with the inward-turned spiral flanging, the near movable end of the middle cover cylinder is provided with the outward-turned spiral flanging, the end part of the static end cover cylinder is provided with the inward-turned spiral flanging, and the end part of the movable end cover cylinder is provided with the outward-turned spiral flanging. Due to the spiral flanging, current flows along the spiral shape of the flanging from the beginning to the full load of electric charge of the spiral flanging, so that spiral current is generated, a transient annular magnetic field is formed on the whole flanging, free electric arcs can be bound by the annular magnetic field, a transient variable magnetic field can be generated along with the exhaustion of high-voltage current, the variable magnetic field can be accompanied by a transient electric field to further prevent electric arc discharge, and the purpose of rapidly extinguishing the arc is achieved.
In foretell vacuum interrupter of single movable fracture, vacuum interrupter includes insulating casing, first fixed fracture outside is equipped with a main cover section of thick bamboo, a main cover section of thick bamboo is fixed on insulating casing, the both ends of a main cover section of thick bamboo extend respectively to the middle part of a middle cover section of thick bamboo and the middle part of moving an end cover section of thick bamboo. The main cover cylinder can prevent metal particles evaporated from the first fixed fracture from being attached to the insulating shell, protect the insulating shell, avoid the insulating property of the insulating shell from being affected, and prolong the service life of the insulating shell.
In the vacuum arc-extinguishing chamber with the single movable fracture, two ends of the main housing cylinder are provided with arc flanges which are bent inwards. Through setting up the arc turn-ups, play the effect of balanced vacuum arc extinguishing indoor electric field.
In the vacuum arc-extinguishing chamber with the single movable fracture, the outer part of the static end cover cylinder and the outer part of the movable end cover cylinder are both provided with the end cover cylinders, and the inner side surface of one end, which is suspended in the air and faces the middle cover cylinder, of each end cover cylinder is provided with the spiral flanging. The electric charges on the surfaces of the spiral turnups of the static end cover cylinder and the end cover cylinder, the movable end cover cylinder and the end cover cylinder are distributed almost uniformly, and potential differences between the static end cover cylinder and the end cover cylinder and between the movable end cover cylinder and the end cover cylinder almost do not exist, so that the discharge phenomenon between the static end cover cylinder and the end cover cylinder and between the movable end cover cylinder and the end cover cylinder is very weak, and the insulating shell of the arc extinguish chamber cannot lose the insulating effect; the spiral flanging also improves the current breaking capacity of the vacuum arc-extinguishing chamber.
In the vacuum arc-extinguishing chamber with the single movable fracture, the vacuum arc-extinguishing chamber further comprises a static conductive rod, the static contact is fixed in the vacuum arc-extinguishing chamber through the static conductive rod, and a contact shielding cover close to the static contact is arranged on the static conductive rod. The static conductive rod is provided with the contact shielding cover, so that the side field intensity of the static contact can be effectively protected.
Compared with the prior art, the invention has the following advantages: aiming at a special physical process in the switching process of the capacitor bank, the switching-off function and the insulation function are separated in a targeted manner, the moving contact bears the switching-off function, the first fixed fracture and the second fixed fracture bear the recovery voltage together, the insulation function is realized, the capacitor bank switching-off device can be applied to switching of capacitive loads, the insulation effect is not influenced by the switching-on and switching-off of the moving contact and the static contact, the insulation effect is good, the occurrence of heavy breakdown can be effectively avoided, and the service life of the vacuum arc extinguish chamber is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum arc-extinguishing chamber with a single movable fracture in the embodiment of the invention.
In the figure, 1, an insulating shell; 2. a movable end cover; 3. a stationary end cap; 4. a movable conductive rod; 5. a static conductive rod; 6. a movable end cover cylinder; 7. an intermediate cover cylinder; 7a, a proximal moving end; 7b, a near static end; 8. a first fixed fracture; 9. a stationary end shield can; 10. a second fixed fracture; 11. a moving contact; 12. static contact; 13. a movable break; 14. a main housing cylinder; 14a, arc flanging; 15. an end shield can; 16. a contact shield; 17. and (5) spirally flanging.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in fig. 1, the vacuum interrupter with a single movable fracture includes an insulating housing 1, a stationary end cover 3, a moving end cover 2, a stationary contact 12, a moving contact 11, a stationary contact rod 5, a moving contact rod 4, a stationary end cover cylinder 9, a moving end cover cylinder 6, an intermediate cover cylinder 7, and a main shield. The insulating housing 1 is cylindrical, the static end cover 3 and the moving end cover 2 are arranged at two ends of the insulating housing 1, and the static end cover, the moving end cover and the moving end cover form a sealed cavity structure. The static contact 12 is fixed in the vacuum arc extinguish chamber through the static conducting rod 5, and the static contact 12, the moving contact 11, the static conducting rod 5, the moving conducting rod 4, the static end cover cylinder 9, the moving end cover cylinder 6, the middle cover cylinder 7 and the main shield are all arranged in the vacuum arc extinguish chamber. The moving contact 11 is connected to the moving end cover 2 in a sliding mode through a moving conducting rod 4, the static contact 12 is fixed to the static end cover 3 through a static conducting rod 5, and a contact shielding cover 16 close to the static contact 12 is arranged on the static conducting rod 5. The static end cover cylinder 9 is fixed on the static end cover 3, and the dynamic end cover cylinder 6 is fixed on the dynamic end cover 2.
The static contact 12 is located in the near moving end 7a of the middle shield cylinder 7, the moving contact 11 is located in the end of the moving end shield cylinder 6 when the moving contact is at the maximum distance, and the static contact 12 and the moving contact 11 form a movable fracture 13. The middle cover cylinder 7 is arranged between the static end cover cylinder 9 and the movable end cover cylinder 6, the middle cover cylinder 7 is provided with a near movable end 7a which has a certain distance with the end part of the movable end cover cylinder 6 and a near static end 7b which has a certain distance with the end part of the static end cover cylinder 9, and the near static end 7b is far away from the near movable end 7 a. The near moving end 7a and the cylinder end of the moving end cover form a first fixed fracture 8, the near static end 7b and the end of the static end cover cylinder 9 form a second fixed fracture 10, the first fixed fracture 8 is located outside the movable fracture 13, the second fixed fracture 10 is far away from the movable fracture 13, and the first fixed fracture 8 and the second fixed fracture 10 share recovery voltage generated on the movable fracture 13 when the vacuum arc-extinguishing chamber is disconnected.
The aperture of the near static end 7b of the middle cover cylinder 7 is larger than that of the end part of the static end cover cylinder 9, and the end part of the static end cover cylinder 9 extends into the near static end 7b of the middle cover cylinder 7. The middle cover cylinder 7 has an inward-turned spiral flange 17 at the near static end 7b, the middle cover cylinder 7 has an outward-turned spiral flange 17 at the near dynamic end 7a, the static end cover cylinder 9 has an inward-turned spiral flange 17 at the end, and the dynamic end cover cylinder 6 has an outward-turned spiral flange 17 at the end.
The main cover cylinder 14 is arranged outside the first fixed fracture 8, the main cover cylinder 14 is fixed on the inner side wall of the insulating shell 1, two ends of the main cover cylinder 14 extend to the middle of the middle cover cylinder 7 and the middle of the movable end cover cylinder 6 respectively, two ends of the main cover cylinder 14 are provided with inward-bent arc-shaped flanges 14a, and an electric field in the balanced vacuum arc extinguishing chamber is achieved through the arc-shaped flanges 14 a.
The static end cover cylinder 9 and the dynamic end cover cylinder 6 are both provided with end cover cylinders 15, and the inner side surface of one end of the end cover cylinder 15 which is suspended and faces the middle cover cylinder 7 is provided with a spiral flanging 17. The charge distribution on the surfaces of the spiral turnups of the static end cover cylinder 9 and the end cover cylinder 15, and the charge distribution on the surfaces of the spiral turnups of the movable end cover cylinder 6 and the end cover cylinder 15 are almost uniform, and potential differences between the static end cover cylinder 9 and the end cover cylinder 15 and between the movable end cover cylinder 6 and the end cover cylinder 15 almost do not exist, so that the discharge phenomenon between the static end cover cylinder 9 and the end cover cylinder 15 and between the movable end cover cylinder 6 and the end cover cylinder 15 is very weak, and the insulation effect of the insulation shell 1 of the arc extinguish chamber cannot be lost; the spiral flanging also improves the current breaking capacity of the vacuum arc-extinguishing chamber, and realizes quick arc-extinguishing.
Example two
The structure of the vacuum arc-extinguishing chamber in this embodiment is basically the same as that in the first embodiment, except that: the aperture of the near static end 7b of the middle cover cylinder 7 is smaller than that of the end part of the static end cover cylinder 9, and the near static end 7b of the middle cover cylinder 7 partially extends into the end part of the static end cover cylinder 9.
The working principle of the vacuum arc-extinguishing chamber with the single movable fracture is as follows: when the vacuum arc-extinguishing chamber is opened or closed, the moving contact 11 is gradually far away from the static contact 12, and a large amount of metal particles are released from the end part of the moving contact 11 in the process; when the moving contact 11 reaches the full-open-distance position, the moving contact 11 retracts into the moving end shield 6, because the first fixed fracture 8 is positioned outside the movable fracture 13, when the open distance between the moving contact 11 and the static contact 12 is larger than the open distance of the first fixed fracture 8, a large amount of charged metal particles released by the end part of the moving contact 11 are attached to the surface of the first fixed fracture 8, so that the recovery voltage attached to the first fixed fracture 8 is increased, the recovery voltage generating the direct-current property after the capacitive current is cut off is completely transferred to the first fixed fracture 8 from the movable fracture 13, because the second fixed fracture 10 is arranged and the second fixed fracture 10 is far away from the movable fracture 13, the charge on the first fixed fracture 8 can be transferred to the second fixed fracture 10, thereby reducing the total charge on the first fixed fracture 8, reducing the recovery voltage on the first fixed fracture 8, and protecting the first fixed fracture 8 from being burnt, therefore, the integral insulation strength of the first fixed fracture 8 and the second fixed fracture 10 is ensured, and the probability of repeated breakdown of the capacitive current of the vacuum arc extinguish chamber is effectively reduced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (9)
1. The vacuum arc extinguish chamber with the single movable fracture comprises an insulating shell (1), a static end cover (3), a movable end cover (2), a movable fracture (13) consisting of a static contact (12) and a movable contact (11), a first fixed fracture (8) and a second fixed fracture (10) consisting of shielding cases, wherein the static end cover (3) and the movable end cover (2) are arranged at two ends of the insulating shell (1), the static end cover (3) and the movable end cover (2) are respectively provided with an end cover cylinder (15), the end cover cylinder (15) arranged on the static end cover (3) and the end cover cylinder (15) arranged on the movable end cover (2) are vertically symmetrical, the shielding cases comprise an intermediate cover cylinder (7), the intermediate cover cylinder (7) is provided with a near static end (7b), and the vacuum arc extinguish chamber is characterized in that one end cover cylinder (15) with one end positioned on the static end cover (3) extends out of the end cover cylinder (15) on the static end cover (3) and the other end cover cylinder (15) extends out of the other end cover cylinder (3) and forms a near static end (7b The other end of the fixed end cover cylinder (9) of the second fixed fracture (10) is away from the near fixed end (7b) by a certain distance, the first fixed fracture (8) and the second fixed fracture (10) are used for jointly bearing recovery voltage on the single movable fracture (13), the first fixed fracture (8) is located outside the movable fracture (13), and the second fixed fracture (10) is far away from the movable fracture (13).
2. The vacuum interrupter with a single movable break according to claim 1, wherein the shielding can comprises a movable end shield cylinder (6) and an intermediate shield cylinder (7) arranged between a stationary end shield cylinder (9) and the movable end shield cylinder (6), the intermediate shield cylinder (7) has a movable end (7a) at a distance from an end of the movable end shield cylinder (6), the stationary end (7b) is far away from the movable end (7a), the movable end (7a) and the movable end shield cylinder (6) form a first fixed break (8), the stationary contact (12) is located in the movable end (7a) of the intermediate shield cylinder (7), and the movable contact (11) is located in the end of the movable end shield cylinder (6) at the maximum opening distance.
3. Vacuum interrupter of a single movable interruption, according to claim 2, characterized in that the aperture of the near static end (7b) of the intermediate can (7) is larger than the aperture of the end of the static can (9), the end part of the static can (9) extending into the near static end (7b) of the intermediate can (7).
4. Vacuum interrupter with single movable interruption, according to claim 2, characterized in that the aperture of the near static end (7b) of the intermediate can (7) is smaller than the aperture of the end of the static end can (9), the near static end (7b) of the intermediate can (7) partially protruding into the end of the static end can (9).
5. The vacuum interrupter with a single movable break according to claim 2, 3 or 4, characterized in that the near static end (7b) of the middle cover cylinder (7) has an inward-turned spiral flange (17), the near movable end (7a) of the middle cover cylinder (7) has an outward-turned spiral flange (17), the end of the static cover cylinder (9) has an inward-turned spiral flange (17), and the end of the movable cover cylinder (6) has an outward-turned spiral flange (17).
6. The vacuum interrupter with a single movable fracture as claimed in claim 2, 3 or 4, characterized in that the vacuum interrupter comprises an insulating housing (1), the outside of the first fixed fracture (8) is provided with a main shielding cylinder (14), the main shielding cylinder (14) is fixed on the insulating housing (1), and two ends of the main shielding cylinder (14) extend to the middle of the middle shielding cylinder (7) and the middle of the movable end shielding cylinder (6), respectively.
7. Vacuum interrupter of a single movable interruption according to claim 6, characterized in that the main can (14) has at both ends an inwardly curved arc-shaped flanging (14 a).
8. The vacuum interrupter with a single movable interruption according to claim 2, 3 or 4, wherein the end cover cylinder (15) on the movable end cover (2) is arranged outside the movable end cover cylinder (6), and the inner side surface of the end cover cylinder (15) which is suspended towards one end of the middle cover cylinder (7) is provided with a spiral flanging (17).
9. The vacuum interrupter with a single movable fracture as claimed in claim 1, 2, 3 or 4, further comprising a static conductive rod (5), wherein the static contact (12) is fixed in the vacuum interrupter chamber through the static conductive rod (5), and the static conductive rod (5) is provided with a contact shield (16) abutting against the static contact (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236999.XA CN107833782B (en) | 2017-11-30 | 2017-11-30 | Vacuum arc-extinguishing chamber with single movable fracture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236999.XA CN107833782B (en) | 2017-11-30 | 2017-11-30 | Vacuum arc-extinguishing chamber with single movable fracture |
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| Publication Number | Publication Date |
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| CN107833782A CN107833782A (en) | 2018-03-23 |
| CN107833782B true CN107833782B (en) | 2020-07-03 |
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| CN201711236999.XA Active CN107833782B (en) | 2017-11-30 | 2017-11-30 | Vacuum arc-extinguishing chamber with single movable fracture |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112382527B (en) * | 2020-12-01 | 2023-12-19 | 郑州大学 | Self-equalizing control method for dynamic charge compensation of multi-fracture vacuum circuit breaker |
| CN112837966B (en) * | 2020-12-29 | 2022-10-21 | 国网宁夏电力有限公司电力科学研究院 | Arc extinguish chamber structure |
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| JPS49105969A (en) * | 1973-02-16 | 1974-10-07 | ||
| JP2001351485A (en) * | 2000-06-02 | 2001-12-21 | Mitsubishi Electric Corp | Vacuum switch |
| CN100530481C (en) * | 2007-06-05 | 2009-08-19 | 西安交通大学 | A 252kV single-break vacuum interrupter |
| CN104145318A (en) * | 2012-03-02 | 2014-11-12 | 西安交通大学 | Vacuum arc-extinguishing chamber with fixed fracture |
| CN105679597A (en) * | 2016-03-21 | 2016-06-15 | 西安交通大学 | Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber |
| CN207558691U (en) * | 2017-11-30 | 2018-06-29 | 浙江紫光电器有限公司 | A kind of vacuum interrupter of the movable fracture of list |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5450883A (en) * | 1977-09-29 | 1979-04-21 | Tokyo Shibaura Electric Co | Vacuum valve |
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2017
- 2017-11-30 CN CN201711236999.XA patent/CN107833782B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49105969A (en) * | 1973-02-16 | 1974-10-07 | ||
| JP2001351485A (en) * | 2000-06-02 | 2001-12-21 | Mitsubishi Electric Corp | Vacuum switch |
| CN100530481C (en) * | 2007-06-05 | 2009-08-19 | 西安交通大学 | A 252kV single-break vacuum interrupter |
| CN104145318A (en) * | 2012-03-02 | 2014-11-12 | 西安交通大学 | Vacuum arc-extinguishing chamber with fixed fracture |
| CN105679597A (en) * | 2016-03-21 | 2016-06-15 | 西安交通大学 | Contact with fixed fracture and having short-circuit current breaking capability and vacuum arc extinguishing chamber |
| CN207558691U (en) * | 2017-11-30 | 2018-06-29 | 浙江紫光电器有限公司 | A kind of vacuum interrupter of the movable fracture of list |
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| CN107833782A (en) | 2018-03-23 |
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Denomination of invention: A single movable fracture vacuum arc extinguishing chamber Effective date of registration: 20230905 Granted publication date: 20200703 Pledgee: Zhejiang Tyrone commercial bank Limited by Share Ltd. Taizhou Wenling branch Pledgor: ZHEJIANG ZIGUANG ELECTRIC APPLIANCE Co.,Ltd. Registration number: Y2023980055276 |