CN214378206U - Vacuum arc-extinguishing chamber of circuit breaker - Google Patents
Vacuum arc-extinguishing chamber of circuit breaker Download PDFInfo
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- CN214378206U CN214378206U CN202120232056.5U CN202120232056U CN214378206U CN 214378206 U CN214378206 U CN 214378206U CN 202120232056 U CN202120232056 U CN 202120232056U CN 214378206 U CN214378206 U CN 214378206U
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- conducting rod
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- end cover
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Abstract
The utility model relates to a vacuum interrupter of circuit breaker, including porcelain shell, movable end cover board, quiet end cover board and uide bushing, movable end cover board locates the both sides of porcelain shell respectively with quiet end cover board, the uide bushing is located on the movable end cover board, is equipped with static conducting rod, moves conducting rod, bellows and shield cover in the porcelain shell, be equipped with the static contact on the static conducting rod, be equipped with the moving contact on the moving conducting rod, the bellows is located the uide bushing and is moved between the end cover board, the upper surface of static contact is the arc surface of evagination, be equipped with on the moving contact with arc surface assorted recess, the moving contact passes through the arc surface and links to each other with the static contact. The utility model aims to change the contact surface of moving contact and static contact into the arc surface through the vacuum interrupter who designs a circuit breaker to increase the area of contact, charge current flow to an area when avoiding the outage action at every turn, thereby increase vacuum interrupter's life.
Description
Technical Field
The utility model relates to an explosion chamber technical field, in particular to vacuum explosion chamber of circuit breaker.
Background
The vacuum arc-extinguishing chamber is a common arc-extinguishing device in medium and high voltage circuit breakers, and inhibits large current and electric arc generated when medium and high voltage equipment cuts off a power supply through the vacuum insulation effect in the arc-extinguishing chamber, so that electric equipment is protected and the electricity utilization safety is increased.
However, the traditional arc extinguish chamber adopts the moving contact and the static contact, the contact surfaces of the moving contact are both planar, the moving contact is dislocated in the moving process, the contact surfaces of the moving contact and the static contact are not parallel, and after the two contacts are separated, the charge current easily flows to a fixed position, so that the same position is seriously corroded, and the service life of the vacuum arc extinguish chamber is shortened.
Disclosure of Invention
In order to overcome the not enough of background art, the utility model discloses an aim at is through the vacuum interrupter who designs a circuit breaker, changes the contact surface of moving contact and static contact into the arc surface to increase the area of contact, charge current flow to an area when avoiding the outage action at every turn, thereby increase vacuum interrupter's life.
The utility model adopts the technical proposal that: a vacuum arc extinguish chamber of a circuit breaker comprises a porcelain shell, a movable end cover plate, a static end cover plate and a guide sleeve, wherein the movable end cover plate and the static end cover plate are respectively arranged on two sides of the porcelain shell, the guide sleeve is arranged on the movable end cover plate, a static conducting rod, a movable conducting rod, a corrugated pipe and a shielding cover are arranged in the porcelain shell, a static contact is arranged on the static conducting rod, a movable contact is arranged on the movable conducting rod, the movable conducting rod penetrates through the movable end cover plate to enable the movable contact to correspond to the static contact, the shielding cover is arranged on the movable conducting rod, the corrugated pipe is arranged between the guide sleeve and the movable end cover plate, the upper surface of the static contact is an arc surface protruding outwards, a groove matched with the arc surface is arranged on the movable contact, the movable contact is connected with the static contact through the arc surface, a first cutting groove of the arc shape is arranged on the static contact, and a second cutting groove of the arc shape is arranged on the movable contact.
By adopting the technical scheme, the movable conducting rod extends into the porcelain shell through the limit of the guide sleeve, and a closed space is formed by combining the movable end cover plate, the static end cover plate and the static conducting rod, so that the condition of vacuum insulation is achieved; traditional moving contact and static contact's contact surface is the plane, thereby can receive installation error when moving conducting rod and remove, thereby the skew takes place for the interference of bellows compression, make the moving contact, the contact surface nonparallel of static contact, when moving contact and static contact separate at every turn, charge current concentrates on the fixed area of contact surface easily, make this region receive the corruption seriously, the utility model discloses a static contact and moving contact pass through the contact of arc surface, it more strengthens for its area of contact of planar contact to compare the surface, the static contact, the moving contact is respectively through first grooving, the same position of charge current flow direction is avoided to the second grooving, first grooving, the second grooving is convex, make and produce relatively even magnetic field, thereby increase the life of static contact and moving contact.
The utility model discloses further set up to, be equipped with first spliced pole on the static contact, quiet conducting rod passes through first spliced pole and is connected with the static contact, be equipped with the second spliced pole on the moving contact, it is connected with the moving contact through the second spliced pole to move the conducting rod, one side of first spliced pole, second spliced pole all is equipped with tangent plane and connecting hole.
Furthermore, the static conducting rod is provided with a first mounting groove matched with the first connecting column, the static conducting rod is connected with the static contact through the first mounting groove, the movable conducting rod is provided with a second mounting groove matched with the second connecting column, and the movable conducting rod is connected with the movable contact through the second mounting groove.
By adopting the technical scheme, the static contact and the moving contact are fixed through the first connecting column and the second connecting column respectively, the first connecting column and the second connecting column are prevented from rotating in the first mounting groove and the second mounting groove through the tangent plane, the direction of the connecting hole is vertical to that of the mounting groove, so that the situation that the fastener is separated from the connecting hole due to gravity is avoided, the static contact and the moving contact are fixed, and the stability of equipment is improved.
The utility model discloses further set up to, static conducting rod, move the conducting rod and be connected rather than the static contact, the moving contact that correspond respectively through threaded connection's mode.
By adopting the technical scheme, the first connecting column and the second connecting column are respectively inserted into the corresponding first mounting groove and the corresponding second mounting groove, and the static contact and the moving contact are fixed on the corresponding static conducting rod and the corresponding moving conducting rod by screws through the mounting holes.
The utility model discloses further set up to, be equipped with the first grooving that is heliciform evenly distributed on the static contact, be equipped with the second grooving that is heliciform evenly distributed on the moving contact.
Furthermore, six first cutting grooves which are uniformly distributed in a spiral shape are formed in the static contact, and six second cutting grooves which are uniformly distributed in a spiral shape are formed in the moving contact.
By adopting the technical scheme, the static contact and the moving contact are respectively and equally divided through the first cutting groove and the second cutting groove, so that current and charge flow is relatively uniform and a relatively uniform magnetic field is generated, the service lives of the static contact and the moving contact are prolonged, and the stability of equipment is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a perspective view of a static contact of the present invention;
fig. 3 is a perspective view of the moving contact of the present invention;
Detailed Description
As shown in fig. 1-3, a vacuum arc-extinguishing chamber of a circuit breaker includes a porcelain shell 01, a movable end cover plate 02, a stationary end cover plate 03 and a guide sleeve 04, the movable end cover plate 02 and the stationary end cover plate 03 are respectively disposed on two sides of the porcelain shell 01, the guide sleeve 04 is disposed on the movable end cover plate 02, a stationary conductive rod 11, a movable conductive rod 12, a bellows 13 and a shield 14 are disposed in the porcelain shell 01, the stationary conductive rod 11 is provided with a stationary contact 21, the movable conductive rod 12 is provided with a movable contact 22, the movable conductive rod 12 passes through the movable end cover plate 02 so that the movable contact 22 corresponds to the stationary contact 21, the shield 14 is disposed on the movable conductive rod 12, the bellows 13 is disposed between the guide sleeve 04 and the movable end cover plate 02, an upper surface of the stationary contact 21 is a convex arc surface 211, the movable contact 22 is provided with a groove 221 matching the arc surface 211, the movable contact 22 is connected to the stationary contact 21 through the arc surface 211, the static contact 21 is provided with an arc-shaped first slot 212, and the movable contact 22 is provided with an arc-shaped second slot 222. The movable conducting rod 12 extends into the porcelain shell 01 through the limit of the guide sleeve 04, and a closed space is formed by combining the movable end cover plate 02, the static end cover plate 03 and the static conducting rod 11, so that the condition of vacuum insulation is achieved; traditional moving contact 22 and static contact 21's contact surface is the plane, can receive installation error when moving conducting rod 12 removes, thereby the skew takes place for the interference of bellows 13 compression, makes moving contact 22, static contact 21's contact surface nonparallel, and moving contact 22 and static contact 21 are when separating at every turn, and charge current concentrates on the fixed area of contact surface easily, makes this region receive to corrode seriously, the utility model discloses a static contact 21 and moving contact 22 pass through the contact of arc surface 211, compare the surface and more increase for its area of contact of planar contact, and static contact 21, moving contact 22 avoid charge current flow to same position through first grooving 212, second grooving 222 respectively, and first grooving 212, second grooving 222 are arc for produce relatively even magnetic field, thereby increase static contact 21 and moving contact 22's life.
The static contact 21 is provided with a first connecting column 213, the static conducting rod 11 is connected with the static contact 21 through the first connecting column 213, the moving contact 22 is provided with a second connecting column 223, the moving conducting rod 12 is connected with the moving contact 22 through the second connecting column 223, and one side of each of the first connecting column 213 and the second connecting column 223 is provided with a tangent plane 36 and a connecting hole 37. Further, the static conductive rod 11 is provided with a first mounting groove 111 matched with the first connecting column 213, the static conductive rod 11 is connected with the static contact 21 through the first mounting groove 111, the moving conductive rod 12 is provided with a second mounting groove 121 matched with the second connecting column 223, and the moving conductive rod 12 is connected with the moving contact 22 through the second mounting groove 121. The static contact 21 and the moving contact 22 are fixed through the first connecting column 213 and the second connecting column 223 respectively, the first connecting column (213) and the second connecting column (223) are prevented from rotating in the first mounting groove (111) and the second mounting groove (121) through the tangent plane 36, the direction of the mounting hole is perpendicular to that of the mounting grooves, therefore, the fastener is prevented from being separated from the connecting hole 37 due to gravity, the static contact 21 and the moving contact 22 are fixed, and the stability of equipment is improved.
The static conductive rod 11 and the moving conductive rod 12 are respectively connected with the corresponding static contact 21 and the corresponding moving contact 22 in a threaded connection manner. The first and second connecting posts (213, 223) are inserted into the corresponding first and second mounting grooves (111, 121), and the fixed contact 21 and the movable contact 22 are fixed on the corresponding fixed conductive rod 11 and the movable conductive rod 12 through the connecting hole 37 by screws.
The static contact 21 is provided with first slots 212 uniformly distributed in a spiral shape, and the movable contact 22 is provided with second slots 222 uniformly distributed in a spiral shape. Furthermore, six first slots 212 uniformly distributed in a spiral shape are formed in the fixed contact 21, and six second slots 222 uniformly distributed in a spiral shape are formed in the movable contact 22. The static contact 21 and the moving contact 22 are equally divided by the first slot 212 and the second slot 222 respectively, so that the current and the charge flow are relatively uniform and a relatively uniform magnetic field is generated, thereby prolonging the service life of the static contact 21 and the moving contact 22 and increasing the stability of the equipment.
The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited thereto, and any modification that utilizes the inventive concepts will be within the scope of the patent claims.
Claims (5)
1. A vacuum arc extinguish chamber of a circuit breaker is characterized by comprising a porcelain shell, a movable end cover plate, a static end cover plate and a guide sleeve, wherein the movable end cover plate and the static end cover plate are respectively arranged at two sides of the porcelain shell, the guide sleeve is arranged on the movable end cover plate, the ceramic shell is internally provided with a static conducting rod, a movable conducting rod, a corrugated pipe and a shielding cover, the static contact is arranged on the static conducting rod, the moving contact is arranged on the moving conducting rod, the moving conducting rod penetrates through the moving end cover plate to enable the moving contact to correspond to the static contact, the shielding cover is arranged on the movable conducting rod, the corrugated pipe is arranged between the guide sleeve and the movable end cover plate, the upper surface of the static contact is an arc surface which is convex outwards, the moving contact is provided with a groove which is matched with the arc surface, the moving contact is connected with the static contact through the arc surface, the static contact is provided with an arc-shaped first cutting groove, and the moving contact is provided with an arc-shaped second cutting groove;
the static contact is provided with first cutting grooves which are uniformly distributed in a spiral shape, and the moving contact is provided with second cutting grooves which are uniformly distributed in a spiral shape.
2. Vacuum interrupter for a circuit breaker according to claim 1, characterized in that: the static contact is provided with a first connecting column, the static conducting rod is connected with the static contact through the first connecting column, the moving contact is provided with a second connecting column, the moving conducting rod is connected with the moving contact through the second connecting column, and one side of each of the first connecting column and the second connecting column is provided with a tangent plane and a connecting hole.
3. Vacuum interrupter for a circuit breaker according to claim 2, characterized in that: the static conducting rod is provided with a first mounting groove matched with the first connecting column, the static conducting rod is connected with the static contact through the first mounting groove, the movable conducting rod is provided with a second mounting groove matched with the second connecting column, and the movable conducting rod is connected with the movable contact through the second mounting groove.
4. Vacuum interrupter for a circuit breaker according to claim 3, characterized in that: the static conductive rod and the movable conductive rod are respectively connected with the corresponding static contact and the corresponding movable contact in a threaded connection mode.
5. Vacuum interrupter for a circuit breaker according to claim 1, characterized in that: six first cutting grooves which are uniformly distributed in a spiral shape are formed in the static contact, and six second cutting grooves which are uniformly distributed in a spiral shape are formed in the moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120232056.5U CN214378206U (en) | 2021-01-27 | 2021-01-27 | Vacuum arc-extinguishing chamber of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120232056.5U CN214378206U (en) | 2021-01-27 | 2021-01-27 | Vacuum arc-extinguishing chamber of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214378206U true CN214378206U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120232056.5U Active CN214378206U (en) | 2021-01-27 | 2021-01-27 | Vacuum arc-extinguishing chamber of circuit breaker |
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| CN (1) | CN214378206U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709108A (en) * | 2022-04-25 | 2022-07-05 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with bellows damage protect function |
-
2021
- 2021-01-27 CN CN202120232056.5U patent/CN214378206U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114709108A (en) * | 2022-04-25 | 2022-07-05 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with bellows damage protect function |
| CN114709108B (en) * | 2022-04-25 | 2023-08-11 | 国网山东省电力公司德州供电公司 | Vacuum circuit breaker with corrugated pipe damage protection function |
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