CN210668201U - Novel vacuum circuit breaker - Google Patents
Novel vacuum circuit breaker Download PDFInfo
- Publication number
- CN210668201U CN210668201U CN201921919579.6U CN201921919579U CN210668201U CN 210668201 U CN210668201 U CN 210668201U CN 201921919579 U CN201921919579 U CN 201921919579U CN 210668201 U CN210668201 U CN 210668201U
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- circuit breaker
- action
- breaker body
- connecting rod
- moving contact
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Abstract
The utility model relates to a novel vacuum circuit breaker, which comprises a circuit breaker body, an isolation switch and a moving contact; a connecting rod structure is arranged between the circuit breaker body and the isolation switch blade, one end of the action shaft is coaxially and fixedly connected with an action disc, and at least two gaps are circumferentially distributed on the action disc; one side that the circuit breaker body is close to the mounting disc is equipped with the self-lock device with action dish looks joint, and self-lock device includes that the level sets firmly fixed axle, the middle part on the circuit breaker body and articulates the rotor arm on the fixed axle, and the one end of rotor arm sets firmly the bearing with the breach looks joint of action dish, the other end that the rotor arm was kept away from has set firmly the short column, the one end rigid coupling of short column and a spring, and the other end of spring sets firmly the one side that is close to the action dish at the circuit breaker body. The utility model discloses have and to strengthen contact strength, avoid the effect that the contact is inhomogeneous or easy atress is kick-backed.
Description
Technical Field
The utility model belongs to the technical field of vacuum circuit breaker's technique and specifically relates to a novel vacuum circuit breaker is related to.
Background
At present, a circuit breaker is an important switching device in a power system and is used for controlling the input and the exit of a power line or equipment and protecting the normal operation of the line in the operation of a power grid. In all grid operation accidents, accidents caused by high-voltage circuit breakers account for a considerable proportion of both times and power failure times caused by the accidents. Therefore, carry out on-line monitoring to the circuit breaker, replace traditional periodic overhaul mode, the operating condition who in time knows the circuit breaker is to improving the power supply reliability decisive meaning.
The utility model discloses a current application number is CN 204516666U's chinese utility model, this utility model discloses a novel vacuum circuit breaker, its main technical scheme includes the circuit breaker box, is provided with vacuum circuit breaker body, isolation switch, pouring type current transformer and support and flexible coupling on the box, vacuum circuit breaker body and the integrative installation of isolation switch have mechanical interlocking between vacuum circuit breaker body and the isolation switch, the support mounting is in vacuum circuit breaker body outgoing lines side, and current transformer installs on the support, adopts the screw rod to be connected between current transformer and the support, is provided with operating device and conducting rod on the vacuum circuit breaker body, and the conducting rod links to each other with the flexible coupling for current transformer.
The above prior art solutions have the following drawbacks: because the isolation switch is connected with the current transformer through flexible connection, the isolation switch is easily not uniformly contacted with the current transformer, so that the connection part is rapidly heated, or the movable isolation switch rebounds to cause abnormal short circuit, thereby influencing the work of a power grid.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel vacuum circuit breaker, can strengthen contact strength, avoid the contact inhomogeneous or the easy atress resilience that exists to prior art.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a novel vacuum circuit breaker comprises a circuit breaker body, wherein a plurality of isolating switch blades are vertically arranged on one side of the circuit breaker body, and one end, close to the isolating switch blades, of the circuit breaker body is hinged with a moving contact which is abutted against the isolating switch blades; a connecting rod structure is arranged between the circuit breaker body and the isolation switch blade, the connecting rod structure comprises action shafts horizontally penetrating through two sides of the circuit breaker body and rotatably connected with the circuit breaker body and an action structure connected with the moving contact in a sliding manner, one end of each action shaft is coaxially and fixedly connected with an action disc, and at least two gaps are circumferentially distributed on the action disc; one side that the circuit breaker body is close to the mounting disc is equipped with the self-lock device with action dish looks joint, self-lock device includes that the level sets firmly fixed axle, the middle part on the circuit breaker body and articulates the rotor arm on the fixed axle, the one end of rotor arm sets firmly the bearing with the breach looks joint of action dish, the other end that the rotor arm was kept away from has set firmly the short column, the one end rigid coupling of short column and a spring, the other end of spring sets firmly the one side that is close to the action dish at the circuit breaker body.
By adopting the technical scheme, the action disc is rotated, the action disc drives the action shaft to rotate, and then the action shaft enables the movable contact to be far away from or separate the knife switch through the connecting rod structure, so that the vacuum circuit breaker is opened and closed; when the action disc rotates, the notch provides force for the bearing clamped in the notch, so that the bearing rotates, and meanwhile, the bearing stretches the spring through the rotating arm, so that the bearing is separated from the notch; when the gap on the action disc rotates to the bearing, the spring recovers and drives the rotating arm to rotate, so that the gap is clamped with the bearing, the action disc is locked, the moving contact is locked, and the moving contact is prevented from being rebounded under stress or incompletely contacted.
The utility model discloses further set up to: the top of isolation plug-in strip is equipped with the butt head, the one end that the circuit breaker body was kept away from to the moving contact is equipped with the joint with butt head looks joint, the joint includes the flexure strip and wears to locate the conflict core of flexure strip and perpendicular to moving contact, the butt head is equipped with the slot of pegging graft mutually with the conflict core, the tip that the conflict core was kept away from to the flexure strip is inconsistent with the cell wall of slot, set up the through-hole with the tip looks joint of flexure strip on the cell wall of slot.
Through adopting above-mentioned technical scheme, when conflict core inserts the slot in, the cell wall that the spring plate atress was contracted and was followed the slot slides, when the tip that the conflict core was kept away from to the spring plate slides to through-hole department, the spring plate resumes to make in the tip of spring plate inserts the through-hole, realizes the joint to the core of contradicting, avoids joint atress to kick-back or contact incompletely.
The utility model discloses further set up to: the through hole is obliquely arranged, and the height of the through hole is gradually reduced outwards from the inner wall of the slot.
Through adopting above-mentioned technical scheme, because the through-hole slope sets up, therefore when needs will keep apart the plug-in strip and moving contact phase separation, the flexure strip tip can break away from in the through-hole, realizes keeping apart the separation of plug-in strip and moving contact.
The utility model discloses further set up to: the circuit breaker body comprises a vacuum arc extinguish chamber, a mounting seat fixedly arranged on one side of the vacuum arc extinguish chamber and a plurality of current transformers vertically and fixedly arranged on the top of the vacuum arc extinguish chamber, the isolation switch is fixedly arranged on one side, away from the vacuum arc extinguish chamber, of the mounting seat, and one side, close to the isolation switch, of each current transformer is horizontally and convexly provided with a wire outlet sleeve; the moving contact comprises a connecting rod and a sliding groove, wherein one end of the connecting rod is hinged with one end, far away from the current transformer, of the outgoing line sleeve, the sliding groove is formed in the length direction of the connecting rod, and the connecting rod is connected with the action structure in a sliding mode through the sliding groove.
The utility model discloses further set up to: the action structure comprises a first hanging lug and an insulating pull rod, wherein one end of the first hanging lug is sleeved on the action shaft, one end of the insulating pull rod is hinged to the first hanging lug, and one end, far away from the first hanging lug, of the insulating pull rod is connected with the sliding groove of the moving contact in a sliding mode.
By adopting the technical scheme, when the action shaft rotates, the first hanging lug drives the insulating pull rod to ascend or descend, so that the insulating pull rod slides along the sliding groove, the movable contact and the isolation switch blade are further close to or far away from each other, and the vacuum circuit breaker is opened or closed.
The utility model discloses further set up to: the action structure still includes that a pot head establishes second hangers and one end and second hangers looks articulated spring sleeve pole on the action axle, the one end that the second hangers was kept away from to the spring sleeve pole is articulated mutually with one side that vacuum interrupter was kept away from to the mount pad.
Through adopting above-mentioned technical scheme, when isolation plug-in strip and moving contact looks butt, the effect of the effect between moving contact and the isolation plug-in strip can be strengthened to the spring sleeve pole to avoid the moving contact atress to bounce back.
The utility model discloses further set up to: the coaxial rigid coupling of action axle one end near the action dish has the isolation handle, keep apart the handle and use the action axle to extend back to back as the axle center.
Through adopting above-mentioned technical scheme, through rotating the isolation handle, can conveniently rotate the action axle.
The utility model discloses further set up to: and rubber sleeves are sleeved at the two ends of the isolation handle.
Through adopting above-mentioned technical scheme, the rubber sleeve can increase frictional force to avoid rotating the in-process and taking place to skid.
To sum up, the utility model discloses a beneficial technological effect does:
1. by arranging the action disc and the self-locking structure, the action shaft can be locked, so that the locking of the opening and closing states of the moving contact and the isolation switch blade is realized, and the moving contact is prevented from rebounding under stress or being incompletely contacted with the isolation switch blade;
2. through the arrangement of the elastic pieces and the through holes, the movable contact can be clamped with the isolation switch blade, and the phenomenon that the movable contact rebounds under stress or is incompletely contacted with the isolation switch blade is avoided;
3. through setting up the isolation handle, conveniently rotate the action axle.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.
Fig. 3 is a structural sectional view of the present invention.
Fig. 4 is a partially enlarged schematic view of a portion B in fig. 3.
In the figure, 1, a vacuum arc-extinguishing chamber; 2. a mounting seat; 20. an isolation handle; 21. an action shaft; 22. a first suspension loop; 221. an insulating pull rod; 23. a second suspension loop; 231. a spring loop bar; 25. an action disk; 251. a notch; 26. a fixed shaft; 27. a rotating arm; 271. a bearing; 28. a short column; 29. a spring; 3. a current transformer; 31. a wire outlet sleeve; 4. isolating the knife switch; 41. a slot; 42. a through hole; 5. a moving contact; 51. a connecting rod; 52. a chute; 53. a collision core; 54. an elastic sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a novel vacuum circuit breaker disclosed by the present invention comprises a circuit breaker body, the circuit breaker body comprises a vacuum arc extinguish chamber 1, a mounting base 2 fixedly arranged on one side of the vacuum arc extinguish chamber 1, and a plurality of current transformers 3 vertically and fixedly arranged on the top of the vacuum arc extinguish chamber 1, a plurality of isolation switch blades 4 are vertically and fixedly arranged on one side of the mounting base 2 away from the vacuum arc extinguish chamber 1, a wire outgoing sleeve 31 is horizontally and convexly arranged on one side of the current transformers 3 close to the isolation switch blades 4, one end of the wire outgoing sleeve 31 away from the current transformers 3 is hinged with a moving contact 5 which is abutted against the isolation switch blades 4, a connecting rod structure is arranged between the vacuum arc extinguish chamber 1 and, the connecting rod structure comprises an action shaft 21 which is arranged on two opposite sides of the mounting seat 2 in a penetrating way and is rotationally connected with the mounting seat 2 and an action structure which is fixedly connected with the action shaft 21 and is connected with the moving contact 5 in a sliding way; the action shaft 21 is rotated, the action shaft 21 enables the action structure to rotate, and then the action structure drives the moving contact 5 to be clamped with the isolation switch blade 4 or to be far away from the isolation switch blade 4, so that the opening and closing of the breaker body are realized.
Referring to fig. 1, the movable contact 5 includes a connecting rod 51 hinged to the outgoing line casing 31, a clamping joint fixedly disposed at an end of the connecting rod 51 far away from the outgoing line casing 31 and clamped with the isolation switch blade 4, and a sliding slot 52 formed along a length direction of the connecting rod 51; the action structure comprises a first hanging lug 22 and a second hanging lug 23, one end of the first hanging lug 22 is fixedly arranged on the action shaft 21, one end of the first hanging lug 22, which is far away from the action shaft 21, is hinged with an insulating pull rod 221, and one end of the insulating pull rod 221, which is far away from the first hanging lug 22, is connected with the sliding groove 52 of the movable contact 5 in a sliding manner; one end of the second hanging lug 23, which is far away from the action shaft 21, is hinged with a spring sleeve rod 231, and one end of the spring sleeve rod 231, which is far away from the second hanging lug 23, is hinged with one side of the mounting base 2, which is far away from the vacuum arc-extinguishing chamber 1; when the action shaft 21 rotates, the first hanging lug 22 drives the insulating pull rod 221 to ascend or descend, so that one end, away from the first hanging lug 22, of the insulating pull rod 221 slides along the sliding groove 52, the movable contact 5 and the isolation switch blade 4 are further close to or far away from each other, and the vacuum circuit breaker is opened or closed; when the isolation switch blade 4 is connected with the moving contact 5 in a clamped manner, the spring sleeve rod 231 can enhance the action of force between the moving contact 5 and the isolation switch blade 4, so that the moving contact 5 is prevented from rebounding due to stress.
In order to limit the action shaft 21 and avoid the action shaft 21 from rotating under stress, referring to fig. 1 and 2, one end of the action shaft 21 is coaxially and fixedly connected with an action disc 25, and at least two notches 251 are circumferentially arranged on the action disc 25; a self-locking device clamped with the action disc 25 is arranged on one side of the mounting seat 2 close to the action disc 25, the self-locking device comprises a fixed shaft 26 horizontally and fixedly arranged on the outer side wall of the mounting seat 2 and a rotating arm 27 with the middle part hinged on the fixed shaft 26, and a bearing 271 clamped with the notch 251 of the action disc 25 is fixedly arranged at one end of the rotating arm 27 close to the action disc 25; the end of the rotating arm 27 away from the action disc 25 is fixedly provided with a short column 28, the short column 28 is fixedly connected with one end of a spring 29, and the end of the spring 29 away from the short column 28 is fixedly arranged on the outer side wall of the mounting seat 2.
Rotating the action shaft 21 to make the action shaft 21 drive the action disc 25 to rotate, the notch 251 provides force to the bearing 271 clamped in the notch 251, so that the bearing 271 rotates, the bearing 271 is separated from the notch 251, meanwhile, the bearing 271 stretches the spring 29 through the rotating arm 27, and then the action shaft 21 makes the movable contact 5 far away from or close to the isolation switch blade 4 through the first hanging lug 22 and the insulating pull rod 221, so as to realize the opening and closing of the vacuum circuit breaker; when the notch 251 on the operating disk 25 rotates to the bearing 271, the spring 29 recovers and drives the rotating arm 27 to rotate, so that the notch 251 is clamped with the bearing 271, and the operating disk 25 is locked.
In order to facilitate the rotation of the action shaft 21, referring to fig. 1, an isolation handle 20 for rotating the action shaft 21 is fixedly connected to one end of the action shaft 21, the isolation handle 20 extends back to back with the action shaft 21 as an axis, and both ends of the isolation handle 20 are sleeved with rubber sleeves.
Referring to fig. 3 and 4, the clamping head includes an elastic sheet 54 and a contact core 53 penetrating through the elastic sheet 54 and perpendicular to the connecting rod 51, the top of the isolation switch blade 4 is provided with a contact head clamped with the clamping head, and the top of the contact head is provided with a slot 41 inserted into the contact core 53; the elastic sheet 54 is in an omega shape with an opening deviating from the moving contact, the end part of the elastic sheet 54 far away from the abutting core 53 abuts against the groove wall of the slot 41, the groove wall of the slot 41 is provided with a through hole 42 clamped with the end part of the elastic sheet 54, the through hole 42 is obliquely arranged, and the height of the through hole 42 is gradually reduced outwards from the inner wall of the slot 41; when the abutting core 53 is inserted into the slot 41, the elastic sheet 54 slides along the slot wall of the slot 41 and is stressed to contract, and when the end part of the elastic sheet 54 far away from the abutting core 53 slides to the through hole 42, the elastic sheet 54 recovers to enable the end part of the elastic sheet 54 to be inserted into the through hole 42, so that the abutting core 53 is clamped; when the isolating switch blade 4 and the movable contact 5 need to be separated, the isolating handle 20 is rotated reversely, so that the action shaft 21 is rotated reversely, the movable contact 5 provides reverse inward action for the elastic piece 54, and then the end part of the elastic piece 54 is separated from the through hole 42 which is obliquely arranged, so that the isolating switch blade 4 and the movable contact 5 are separated.
The implementation principle of the embodiment is as follows: when the movable contact 5 and the isolation switch blade 4 need to be closed, the isolation handle 20 is rotated to enable the action shaft 21 to drive the action disc 25 to rotate, the notch 251 provides force for the bearing 271 clamped in the notch 251, so that the bearing 271 rotates, the bearing 271 is separated from the notch 251, meanwhile, the bearing 271 stretches the spring 29 through the rotating arm 27, and then the action shaft 21 enables the movable contact 5 to approach the isolation switch blade 4 through the first hanging lug 22 and the insulating pull rod 221; when the notch 251 on the action disk 25 rotates to the bearing 271, the spring 29 recovers and drives the rotating arm 27 to rotate, so that the notch 251 is clamped with the bearing 271, the action disk 25 is locked, and then the clamping joint is clamped with the abutting head;
when the abutting core 53 is inserted into the slot 41, the elastic sheet 54 slides along the slot wall of the slot 41 and is stressed to contract, and when the end part of the elastic sheet 54 far away from the abutting core 53 slides to the through hole 42, the elastic sheet 54 recovers to enable the end part of the elastic sheet 54 to be inserted into the through hole 42, so that the abutting core 53 is clamped; when the isolating switch blade 4 and the movable contact 5 need to be separated, the isolating handle 20 is rotated reversely, so that the action shaft 21 is rotated reversely, the movable contact 5 provides reverse inward action for the elastic piece 54, and then the end part of the elastic piece 54 is separated from the through hole 42 which is obliquely arranged, so that the isolating switch blade 4 and the movable contact 5 are separated.
The utility model can realize the locking of the action shaft 21 by arranging the action disc 25 and the self-locking structure, thereby realizing the locking of the opening and closing states of the moving contact 5 and the isolation switch blade 4 and avoiding the forced rebound of the moving contact 5 or incomplete contact with the isolation switch blade 4; by arranging the elastic sheet 54 and the through hole 42, the movable contact 5 can be clamped with the isolation switch blade 4, and the movable contact 5 is prevented from rebounding under stress or incompletely contacting with the isolation switch blade 4; the action shaft 21 is convenient to rotate by arranging the isolation handle 20.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A novel vacuum circuit breaker comprises a circuit breaker body, wherein a plurality of isolating switch blades (4) are vertically arranged on one side of the circuit breaker body, and a moving contact (5) which is abutted against the isolating switch blades (4) is hinged to one end, close to the isolating switch blades (4), of the circuit breaker body; be equipped with connecting rod structure between circuit breaker body and isolation switch (4), connecting rod structure includes that the level wears to locate circuit breaker body both sides and rotates action axle (21) of being connected and the action structure who slides and be connected with moving contact (5) with circuit breaker body, its characterized in that: one end of the action shaft (21) is coaxially and fixedly connected with an action disc (25), and at least two gaps (251) are arranged on the action disc (25) in the circumferential direction; one side that the circuit breaker body is close to the mounting disc is equipped with the self-lock device with action dish (25) looks joint, self-lock device includes that the level sets firmly fixed axle (26) on the circuit breaker body, rotor arm (27) on fixed axle (26) are articulated at the middle part, the one end of rotor arm (27) sets firmly bearing (271) with breach (251) looks joint of action dish (25), the other end that rotor arm (27) were kept away from has set firmly short column (28), the one end rigid coupling of short column (28) and a spring (29), the other end of spring (29) sets firmly the one side that is close to action dish (25) at the circuit breaker body.
2. The new vacuum interrupter as claimed in claim 1, wherein: the top of isolation plug-in strip (4) is equipped with the butt head, the one end that the circuit breaker body was kept away from in moving contact (5) is equipped with the joint of joint mutually with the butt head, the joint includes flexure strip (54) and wears to locate flexure strip (54) and perpendicular to moving contact (5) conflict core (53), the butt head is equipped with slot (41) of pegging graft mutually with conflict core (53), the tip that conflict core (53) were kept away from in flexure strip (54) and the cell wall looks butt of slot (41), set up through-hole (42) with the end looks joint of flexure strip (54) on the cell wall of slot (41).
3. The new vacuum interrupter as claimed in claim 2, wherein: the through hole (42) is obliquely arranged, and the height of the through hole (42) is gradually reduced outwards from the inner wall of the slot (41).
4. The new vacuum interrupter as claimed in claim 1, wherein: the circuit breaker comprises a circuit breaker body and a circuit breaker body, wherein the circuit breaker body comprises a vacuum arc-extinguishing chamber (1), a mounting seat (2) fixedly arranged on one side of the vacuum arc-extinguishing chamber (1) and a plurality of current transformers (3) vertically and fixedly arranged on the top of the vacuum arc-extinguishing chamber (1), isolation switch blades (4) are fixedly arranged on one side, far away from the vacuum arc-extinguishing chamber (1), of the mounting seat (2), and one side, close to the isolation switch blades (4), of each current transformer (3) is horizontally and convexly provided with a wire outlet; the moving contact (5) comprises a connecting rod (51) and a sliding groove (52), one end of the connecting rod (51) is hinged to one end, far away from the current transformer (3), of the outgoing line sleeve (31), the sliding groove (52) is formed in the length direction of the connecting rod (51), and the connecting rod (51) is connected with the action structure in a sliding mode through the sliding groove (52).
5. The new vacuum interrupter as claimed in claim 4, wherein: the action structure comprises a first hanging lug (22) with one end sleeved on the action shaft (21) and an insulating pull rod (24) with one end hinged with the first hanging lug (22), wherein one end, far away from the first hanging lug (22), of the insulating pull rod (24) is connected with a sliding groove (52) of the movable contact (5) in a sliding mode.
6. The new vacuum interrupter as claimed in claim 5, wherein: the action structure still includes that a pot head establishes second hangers (23) and one end and second hangers (23) articulated spring sleeve pole (231) mutually on action axle (21), the one end that second hangers (23) were kept away from in spring sleeve pole (231) is articulated mutually with one side that vacuum interrupter (1) was kept away from in mount pad (2).
7. The new vacuum interrupter as claimed in claim 1, wherein: the action shaft (21) is close to the coaxial rigid coupling of one end of action dish (25) and has kept apart handle (20), keep apart handle (20) and use action shaft (21) to extend back to back as the axle center.
8. The new vacuum interrupter as claimed in claim 7, wherein: the two ends of the isolation handle (20) are both sleeved with rubber sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919579.6U CN210668201U (en) | 2019-11-07 | 2019-11-07 | Novel vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921919579.6U CN210668201U (en) | 2019-11-07 | 2019-11-07 | Novel vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210668201U true CN210668201U (en) | 2020-06-02 |
Family
ID=70814293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921919579.6U Active CN210668201U (en) | 2019-11-07 | 2019-11-07 | Novel vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210668201U (en) |
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2019
- 2019-11-07 CN CN201921919579.6U patent/CN210668201U/en active Active
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