CN215869120U - Permanent magnet rapid switching-on and switching-off circuit breaker structure - Google Patents
Permanent magnet rapid switching-on and switching-off circuit breaker structure Download PDFInfo
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- CN215869120U CN215869120U CN202121968908.3U CN202121968908U CN215869120U CN 215869120 U CN215869120 U CN 215869120U CN 202121968908 U CN202121968908 U CN 202121968908U CN 215869120 U CN215869120 U CN 215869120U
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- circuit breaker
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- 230000007246 mechanism Effects 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000009347 mechanical transmission Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model provides a permanent magnet rapid switching-on and switching-off circuit breaker structure, which belongs to the technical field of high-voltage power transmission and distribution equipment and comprises a vacuum arc extinguish chamber, wherein moving contacts are connected to the left side wall and the right side wall of the vacuum arc extinguish chamber in a sliding manner, one ends, far away from each other, of the two moving contacts are connected with insulating pull rods in a sliding manner, contact pressure springs are sleeved on the outer sides of the two insulating pull rods, and one ends, far away from the vacuum arc extinguish chamber, of the two insulating pull rods are connected with permanent magnet mechanisms. The utility model solves the problem that the reliability of the permanent magnet circuit breaker can be reduced by adopting a method for reducing the switching-off time at present, and the whole structure adopts linear transmission, thereby improving the mechanical transmission efficiency and reducing the power consumption of a permanent magnet mechanism; the vacuum arc-extinguishing chamber with two groups of moving contacts is innovatively introduced, and two groups of permanent magnet mechanisms which are symmetrically arranged are used for synchronous driving, so that the relative speed of the contacts during closing and opening is greatly improved, and the current closing and opening capabilities of the circuit breaker are improved.
Description
The technical field is as follows:
the utility model belongs to the technical field of high-voltage power transmission and distribution equipment, and particularly relates to a permanent magnet rapid switching-on and switching-off circuit breaker structure.
Background art:
in recent years, the permanent magnet circuit breaker is widely used in a power grid system with excellent performance and reliability, the power grid system also puts forward higher requirements, the opening time of the permanent magnet circuit breaker is required to be less than 5ms when fault current is cut off, and the current methods in the industry are mostly obtained by reducing the contact stroke, reducing the static holding force of a permanent magnet mechanism and improving the output power of the permanent magnet mechanism; the methods undoubtedly reduce the reliability of the permanent magnet circuit breaker and finally cause no compensation, so that the permanent magnet quick switching-on/off circuit breaker structure is provided.
The utility model has the following contents:
the utility model provides a permanent magnet rapid switching-on and switching-off circuit breaker structure, which aims to solve the problem that the reliability of a permanent magnet circuit breaker can be reduced by adopting a method for reducing switching-off time at present.
The utility model provides a permanent magnet rapid switching-on and switching-off circuit breaker structure which comprises a vacuum arc extinguish chamber, wherein moving contacts are connected to the left side wall and the right side wall of the vacuum arc extinguish chamber in a sliding mode, insulating pull rods are connected to the ends, far away from each other, of the moving contacts in a sliding mode, contact pressure springs are sleeved on the outer sides of the two insulating pull rods, and a permanent magnet mechanism is connected to the end, far away from the vacuum arc extinguish chamber, of the two insulating pull rods.
Further, permanent magnetic mechanism includes carriage release lever, iron core, shell, solenoid, shrouding, the one end fixedly connected with of vacuum interrupter is kept away from with insulating pull rod to the carriage release lever, the iron core suit is in the outside of carriage release lever, the suit of shell is in the outside of carriage release lever, solenoid encircle in the outside of iron core and with the inboard fixed connection of shell, the shrouding is fixed in the one side of keeping away from vacuum interrupter at the shell.
By adopting the technical scheme, the two permanent magnet mechanisms can drive the insulating pull rod to move by two driving mechanisms, so that the insulating pull rod drives the moving contact to move through the contact pressure spring, the two moving contacts are switched off and switched on, and the switching-on and switching-off speed of the moving contact can be greatly improved.
Furthermore, the two moving contacts are symmetrically distributed, and communicating holes matched with the moving contacts are formed in the left side wall and the right side wall of the vacuum arc extinguish chamber.
By adopting the technical scheme, the two moving contacts are symmetrically arranged on the left and right, the permanent magnetic mechanisms are connected to one end of the moving contact of the vacuum arc-extinguishing chamber through the insulating pull rod, the two permanent magnetic mechanisms synchronously drive the moving contact of the vacuum arc-extinguishing chamber to carry out switching-on and switching-off operations along a straight line, and the communicating hole ensures that the moving contact can slide to carry out switching-on and switching-off operations.
Furthermore, one end, close to the moving contact, of each insulating pull rod is set to be a thin rod, a contact pressure spring is sleeved outside the thin rod, one ends, close to the moving contact, of the two insulating pull rods are set to be Y-shaped, one end, far away from the vacuum arc extinguish chamber, of each moving contact is connected with a Y-shaped branch end of each insulating pull rod in a sliding mode, a waist hole is formed in the Y-shaped branch end of each insulating pull rod, one end, close to the insulating pull rods, of each moving contact is fixedly connected with a limiting block matched with the waist hole, one end of each contact pressure spring is fixedly connected with the corresponding insulating pull rod, and the other end of each contact pressure spring is fixedly connected with the corresponding moving contact.
By adopting the technical scheme, the insulating pull rod is moved to apply power to the moving contact body through the contact pressure spring, and the contact pressure and the contact stroke are provided by the contact pressure spring in a closing state.
Further, the closing plate is fixedly connected with the shell through a fixing bolt.
Through adopting above-mentioned technical scheme, utilize the detachable shrouding to maintain the processing to the structure of shell inside.
Furthermore, one side of the shell close to the moving contact and the sealing plate are both provided with sliding holes matched with the moving rod.
Through adopting above-mentioned technical scheme, the sliding hole makes the carriage release lever slide on shell, shrouding to restrict the carriage release lever.
Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:
in the utility model, the whole structure adopts linear transmission, thus improving the mechanical transmission efficiency and reducing the power consumption of the permanent magnet mechanism; the vacuum arc-extinguishing chamber with two groups of moving contacts is innovatively introduced, and two groups of permanent magnet mechanisms which are symmetrically arranged are used for synchronous driving, so that the relative speed of the contacts during closing and opening is greatly improved, and the current closing and opening capabilities of the circuit breaker are improved; the method has the advantages of reliably reducing the opening time of the circuit breaker, shortening the theoretical existence time of the power grid fault and greatly improving the reliability and safety of power transmission and distribution of the power grid.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and drawings.
Description of the drawings:
the accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a portion of the present invention.
Reference numerals: 1. a vacuum arc-extinguishing chamber; 2. a moving contact; 3. an insulating pull rod; 4. a contact pressure spring; 5. a permanent magnet mechanism; 51. a travel bar; 52. an iron core; 53. a housing; 54. an electromagnetic coil; 55. and (7) closing the plate.
The specific implementation mode is as follows:
in order to make the objects, technical solutions and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model without any inventive step, are within the scope of protection of the utility model.
As shown in fig. 1, the utility model provides a permanent magnet fast switching-on/switching-off circuit breaker structure, which comprises a vacuum arc extinguish chamber 1, wherein moving contacts 2 are connected to both the left side wall and the right side wall of the vacuum arc extinguish chamber 1 in a sliding manner, insulating pull rods 3 are connected to the ends, away from each other, of the two moving contacts 2 in a sliding manner, contact pressure springs 4 are sleeved on the outer sides of the two insulating pull rods 3, and a permanent magnet mechanism 5 is connected to the end, away from the vacuum arc extinguish chamber 1, of the two insulating pull rods 3.
The permanent magnetic mechanisms 5 comprise a moving rod 51, an iron core 52, a shell 53, an electromagnetic coil 54 and a sealing plate 55, the moving rod 51 is fixedly connected with one end of the insulating pull rod 3, which is far away from the vacuum arc-extinguishing chamber 1, the iron core 52 is sleeved on the outer side of the moving rod 51, the shell 53 is sleeved on the outer side of the moving rod 51, the electromagnetic coil 54 surrounds the outer side of the iron core 52 and is fixedly connected with the inner side of the shell 53, the sealing plate 55 is fixed on one side of the shell 53, which is far away from the vacuum arc-extinguishing chamber 1, the two permanent magnetic mechanisms 5 can drive the insulating pull rod 3 to move so that the insulating pull rod 3 drives the moving contact 2 to move through a contact pressure spring 4, so that the two moving contacts 2 are subjected to opening and closing, and the closing and opening speed of the moving contact 2 can be greatly improved;
the two moving contacts 2 are symmetrically distributed, the left side wall and the right side wall of the vacuum arc extinguish chamber 1 are both provided with communicating holes matched with the moving contacts 2, the two moving contacts 2 are symmetrically arranged on the left side and the right side, the permanent magnetic mechanisms 5 are connected to one end of the moving contacts 2 of the vacuum arc extinguish chamber 1 through the insulating pull rod 3, the two permanent magnetic mechanisms 5 drive the moving contacts 2 of the vacuum arc extinguish chamber 1 to carry out switching-on and switching-off operations along a straight line synchronously, and the communicating holes ensure that the moving contacts 2 can slide to carry out switching-on and switching-off operations;
referring to fig. 2, one end of an insulating pull rod 3 close to a moving contact 2 is set to be a thin rod, a contact pressure spring 4 is sleeved on the outer side of the thin rod, one ends of the two insulating pull rods 3 close to the moving contact 2 are set to be Y-shaped, one end of the moving contact 2 far away from a vacuum arc extinguish chamber 1 is in sliding connection with a Y-shaped branch end of the insulating pull rod 3, a waist hole is formed in the Y-shaped branch end of the insulating pull rod 3, one end of the moving contact 2 close to the insulating pull rod 3 is fixedly connected with a limiting block matched with the waist hole, one end of the contact pressure spring 4 is fixedly connected with the insulating pull rod 3, the other end of the contact pressure spring 4 is fixedly connected with the moving contact 2, power is acted on the moving contact 2 through the contact pressure spring 4 when the insulating pull rod 3 moves, and a contact pressure and a contact stroke are provided by the contact pressure spring 4 in a switching-on state;
the sealing plate 55 is fixedly connected with the shell 53 through a fixing bolt, and the structure in the shell 53 can be maintained by using the detachable sealing plate 55;
the shell 53 and the sealing plate 55 close to the movable contact 2 are both provided with sliding holes matched with the moving rod 51, and the sliding holes enable the moving rod 51 to slide on the shell 53 and the sealing plate 55 and limit the moving rod 51.
The implementation mode is specifically as follows: the moving contact 2 on the left side is connected with a high-voltage incoming line, the moving contact 2 on the right side is connected with a high-voltage outgoing line, when the switching-on operation is carried out, the two permanent magnet mechanisms 5 are driven simultaneously to electrify the electromagnetic coils 54, the two electromagnetic coils 54 drive the two iron cores 52 to move synchronously so as to enable the two moving rods 51 to move, the two moving rods 51 move to drive the two insulating pull rods 3 to act on the two contact pressure springs 4, the two contact pressure springs 4 provide contact pressure and contact stroke, the two contact pressure springs 4 drive the two moving contacts 2, the moving contact 2 on the left side moves rightwards, the moving contact 2 on the right side moves leftwards, the two moving contacts 2 are in contact with each other to conduct a high-voltage circuit, the contact stroke of the moving contact 2 is divided by the two contact pressure springs 4, the closing speed at the moment can be represented as the relative movement speed of the two moving contacts 2, and the relative speed can be greater than the closing speed of the traditional circuit breaker structure;
when the switching-off operation is carried out, the two permanent magnetic mechanisms 5 are driven simultaneously, the permanent magnetic mechanisms 5 drive the moving contact 2 positioned on the left side to move leftwards through the insulating pull rod 3, the moving contact 2 positioned on the right side to move rightwards, the two moving contacts 2 move in opposite directions and break a high-voltage circuit, the switching-off speed can be represented as the relative movement speed of the two moving contacts 2, and the relative speed can be greater than the switching-off speed of the traditional circuit breaker structure;
in summary, compared with the traditional vacuum arc-extinguishing chamber 1 in which only one end can move instead of two ends, the two moving contacts 2 in the vacuum arc-extinguishing chamber 1 are symmetrically arranged, and the two permanent magnetic mechanisms 5 simultaneously drive the moving contacts 2 in the vacuum arc-extinguishing chamber 1 to switch on and switch off, so that the relative speed of the switching on and switching off speeds of the moving contacts can be greatly improved; compared with the traditional vacuum circuit breaker structure, the contact stroke is better divided into two contact pressure springs 4, the contact stroke of the moving contact 2 is added by the reverse movement displacement of the two insulating pull rods 3 in the switching-off process, which is equal to half of the traditional structure, the switching-off time can be greatly reduced, and the rapid switching-on and switching-off of the circuit breaker are realized.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a permanent magnetism closes fast separating brake circuit breaker structure, includes vacuum interrupter (1), its characterized in that, the equal sliding connection of left and right both sides wall of vacuum interrupter (1) has moving contact (2), two the equal sliding connection of one end that moving contact (2) kept away from each other has insulating pull rod (3), two the outside of insulating pull rod (3) all is equipped with contact pressure spring (4), two the one end that vacuum interrupter (1) was kept away from in insulating pull rod (3) all is connected with permanent magnetic mechanism (5).
2. The permanent magnet rapid opening and closing circuit breaker structure according to claim 1, characterized in that: permanent magnetism mechanism (5) are including carriage release lever (51), iron core (52), shell (53), solenoid (54), shrouding (55), the one end fixedly connected with of vacuum interrupter (1) is kept away from in carriage release lever (51) and insulating pull rod (3), iron core (52) suit is in the outside of carriage release lever (51), the suit of shell (53) is in the outside of carriage release lever (51), solenoid (54) encircle in the outside of iron core (52) and with the inboard fixed connection of shell (53), one side of vacuum interrupter (1) is kept away from in shell (53) is fixed in shrouding (55).
3. The permanent magnet rapid opening and closing circuit breaker structure according to claim 1, characterized in that: the two moving contacts (2) are symmetrically distributed, and communicating holes matched with the moving contacts (2) are formed in the left side wall and the right side wall of the vacuum arc extinguish chamber (1).
4. The permanent magnet rapid opening and closing circuit breaker structure according to claim 1, characterized in that: the one end that insulating pull rod (3) are close to moving contact (2) sets up to the slender pole, contact pressure spring (4) suit is in the outside of slender pole, two the one end that insulating pull rod (3) are close to moving contact (2) sets up to "Y" type, the one end that vacuum interrupter (1) was kept away from in moving contact (2) and insulating pull rod (3) "Y" type branch end sliding connection, the waist hole has been seted up to the "Y" type branch end of insulating pull rod (3), the stopper that one end fixedly connected with and waist hole match of moving contact (2) are close to insulating pull rod (3), the one end and insulating pull rod (3) fixed connection of contact pressure spring (4), the other end and moving contact (2) fixed connection of contact pressure spring (4).
5. The permanent magnet rapid opening and closing circuit breaker structure according to claim 2, characterized in that: the sealing plate (55) is fixedly connected with the shell (53) through a fixing bolt.
6. The permanent magnet rapid opening and closing circuit breaker structure according to claim 2, characterized in that: and one side of the shell (53) close to the moving contact (2) and the sealing plate (55) are both provided with sliding holes matched with the moving rod (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968908.3U CN215869120U (en) | 2021-08-20 | 2021-08-20 | Permanent magnet rapid switching-on and switching-off circuit breaker structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121968908.3U CN215869120U (en) | 2021-08-20 | 2021-08-20 | Permanent magnet rapid switching-on and switching-off circuit breaker structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215869120U true CN215869120U (en) | 2022-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121968908.3U Active CN215869120U (en) | 2021-08-20 | 2021-08-20 | Permanent magnet rapid switching-on and switching-off circuit breaker structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215869120U (en) |
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2021
- 2021-08-20 CN CN202121968908.3U patent/CN215869120U/en active Active
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