CN213781923U - Lower isolation breaker - Google Patents
Lower isolation breaker Download PDFInfo
- Publication number
- CN213781923U CN213781923U CN202022644552.XU CN202022644552U CN213781923U CN 213781923 U CN213781923 U CN 213781923U CN 202022644552 U CN202022644552 U CN 202022644552U CN 213781923 U CN213781923 U CN 213781923U
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- China
- Prior art keywords
- circuit breaker
- isolating
- extinguish chamber
- arc extinguish
- pull rod
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Abstract
The utility model discloses a lower isolation circuit breaker, including circuit breaker and isolator major loop part, circuit breaker and isolator major loop part set up in the shielding formula seals utmost point post admittedly, the major loop part of circuit breaker includes leading-out terminal, flexible coupling, circuit breaker insulating pull rod, vacuum interrupter and the quiet end conductor of explosion chamber; the main circuit part of the isolating switch comprises an isolating static contact, a disconnecting link assembly, an isolating contact seat, an insulating pull rod, a grounding contact and an incoming line terminal; the design provides a fully-shielded load switch unit with small partial discharge, simple production process and high yield, and an insulated pole with a shielding cover has shielding protection, so that potential difference caused by partial discharge due to uneven electric field generated by a conductor is prevented. It can turn on and off the circuit under load condition, and when the system has short-circuit fault, it can quickly cut off short-circuit current. It can also automatically cut off short-circuit fault under the action of protection device.
Description
Technical Field
The utility model belongs to the technical field of the circuit breaker, concretely relates to lower isolation breaker.
Background
The existing load switch unit of the solid insulation ring main unit is mainly derived from sf6 gas insulation technology. It possesses excellent insulating properties and excellent cooling arc characteristics and has been widely used in power systems. Although sf6 gas insulated switchgear has many excellent properties.
However, since sf6 gas is determined to be a limited greenhouse gas, when moisture invades, the electrical strength is reduced, and when moisture and arc products are biochemically decomposed into corrosive gas, the sealing process is an important factor influencing the operation of the circuit breaker, once the gas leaks, the harmful substances can cause serious corrosion to the metal materials and insulating materials of the circuit breaker, thereby causing insulation deterioration, easily causing accidents to cause explosion of equipment, causing serious even breakdown, and solving the problem that the structure of the existing gas box is complicated, so that the isolating circuit breaker is proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lower isolation breaker to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the lower isolation circuit breaker comprises a circuit breaker and an isolation switch main loop part, wherein the circuit breaker and the isolation switch main loop part are arranged in a shielding type solid-sealed polar pole, the main loop part of the circuit breaker comprises a wire outgoing terminal, a flexible connection, a circuit breaker insulation pull rod, a vacuum arc extinguish chamber and an arc extinguish chamber static end conductor, the vacuum arc extinguish chamber and the arc extinguish chamber static end conductor are both arranged in the shielding type solid-sealed polar pole, the wire outgoing terminal is positioned at the top of the shielding type solid-sealed polar pole, the inside of the wire outgoing terminal is connected with one end of the flexible connection, the other end of the flexible connection is fixedly connected with a movable conducting rod of the vacuum arc extinguish chamber through one end of the circuit breaker insulation pull rod, and the other end of the circuit breaker insulation pull rod is connected with a circuit breaker mechanism;
the isolation switch main circuit part comprises an isolation static contact, a disconnecting link assembly, an isolation contact seat, an insulation pull rod, a grounding contact and a wire inlet terminal, wherein the wire inlet terminal is positioned at the bottom of the shielding type solid-sealed terminal, the isolation contact seat is fixed inside the wire inlet terminal, the disconnecting link assembly is rotatably arranged on the isolation contact seat, one end of the insulation pull rod is connected with the disconnecting link assembly, the other end of the insulation pull rod is connected with the output end of the isolation grounding mechanism through a connecting rod, the isolation static contact is installed on the inner wall of the shielding type solid-sealed terminal, and the grounding contact is installed on the inner side of the shielding type solid-sealed terminal and is positioned at the opposite end of the isolation static contact.
Furthermore, the other end of the arc extinguish chamber static end conductor is connected with the isolation static contact.
Furthermore, the isolation grounding mechanism drives the connecting rod to linearly and horizontally move, the disconnecting link assembly is driven by the insulating pull rod to rotate along the isolation contact seat, and the disconnecting link assembly can rotate to be connected with the isolation static contact or the grounding contact.
Furthermore, the circuit breaker mechanism drives the movable conducting rod of the vacuum arc extinguish chamber to do linear motion through the circuit breaker insulation pull rod, and the static end conducting rod of the vacuum arc extinguish chamber is connected with the static terminal of the arc extinguish chamber.
Furthermore, the vacuum arc extinguish chamber and the arc extinguish chamber static end conductor are both poured in the shielding type solid-sealed polar pole.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the design provides a fully-shielded load switch unit with small partial discharge, simple production process and high yield, and an insulated pole with a shielding cover has shielding protection, so that potential difference caused by partial discharge due to uneven electric field generated by a conductor is prevented. It can turn on and off the circuit under load condition, and when the system has short-circuit fault, it can quickly cut off short-circuit current. It can also automatically cut off short-circuit fault under the action of protection device.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. an outlet terminal; 2. soft connection; 3. a breaker insulating pull rod; 4. a vacuum arc-extinguishing chamber; 5. a stationary end conductor of the arc extinguish chamber; 6. isolating the static contact; 7. a knife switch assembly; 8. isolating the contact seat; 9. an insulating pull rod; 10. a ground contact; 11. an incoming terminal; 12. a shielding type solid-sealed polar pole; 13. a circuit breaker mechanism; 14. the grounding mechanism is isolated.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Referring to fig. 1, the utility model provides a technical scheme: the lower isolation circuit breaker comprises a circuit breaker and a main circuit part of an isolation switch, wherein the circuit breaker and the main circuit part of the isolation switch are arranged in a shielding type solid-sealed polar pole 12, the main circuit part of the circuit breaker comprises a wire outgoing terminal 1, a flexible connection 2, a circuit breaker insulation pull rod 3, a vacuum arc extinguish chamber 4 and an arc extinguish chamber static end conductor 5, the vacuum arc extinguish chamber 4 and the arc extinguish chamber static end conductor 5 are both arranged in the shielding type solid-sealed polar pole 12, the wire outgoing terminal 1 is positioned at the top of the shielding type solid-sealed polar pole 12, the inside of the wire outgoing terminal 1 is connected with one end of the flexible connection 2, the other end of the flexible connection 2 is fixedly connected with a movable conducting rod of the vacuum arc extinguish chamber 4 through one end of a circuit breaker insulation pull rod 3, and the other end of the circuit breaker insulation pull rod 3 is connected with a circuit breaker mechanism 13;
the circuit breaker mechanism 13 drives a movable conducting rod of the vacuum arc extinguish chamber 4 to do linear motion through the circuit breaker insulation pull rod 3, and a static end conducting rod of the vacuum arc extinguish chamber 4 is connected with a static terminal of the arc extinguish chamber;
the main circuit part of the isolating switch comprises an isolating static contact 6, a disconnecting link assembly 7, an isolating contact seat 8, an insulating pull rod 9, a grounding contact 10 and a wire inlet terminal 11, wherein the wire inlet terminal 11 is positioned at the bottom of a shielding type solid-sealed terminal 12, the isolating contact seat 8 is fixed inside the wire inlet terminal 11, the disconnecting link assembly 7 is rotatably arranged on the isolating contact seat 8, one end of the insulating pull rod 9 is connected with the disconnecting link assembly 7, the other end of the insulating pull rod 9 is connected with the output end of an isolating grounding mechanism 14 through a connecting rod, the isolating static contact 6 is arranged on the inner wall of the shielding type solid-sealed terminal 12, the grounding contact 10 is arranged on the inner side of the shielding type solid-sealed terminal 12 and positioned at the opposite end of the isolating static contact 6, and the other end of an arc extinguish chamber static end conductor 5 is connected with the isolating static contact 6;
the connecting rod is driven to linearly and horizontally move, the disconnecting link assembly 7 is driven to rotate along the isolation contact seat 8 through the insulating pull rod 9, and the disconnecting link assembly 7 can rotate to be connected with the isolation static contact 6 or the grounding contact 10;
the insulation shielding type solid-sealed polar pole 12 with the shielding cover has shielding protection, thereby preventing potential difference generated by partial discharge due to uneven electric field generated by the electric conductor, being capable of switching on and off a circuit under a load condition, and being capable of rapidly cutting off short-circuit current when a system generates a short-circuit fault. It can also automatically cut off short-circuit fault under the action of protection device.
In this embodiment, the vacuum arc-extinguishing chamber 4 and the arc-extinguishing chamber stationary end conductor 5 are both poured into the shielding type solid-sealed polar pole 12.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. Lower isolation circuit breaker, its characterized in that: the circuit breaker and the main circuit part of the isolating switch are arranged in a shielding type solid-sealed pole (12), the main circuit part of the circuit breaker comprises a wire outgoing terminal (1), a flexible connection (2), a circuit breaker insulating pull rod (3), a vacuum arc extinguish chamber (4) and an arc extinguish chamber static end conductor (5), the vacuum arc extinguish chamber (4) and the arc extinguish chamber static end conductor (5) are both installed in the shielding type solid-sealed pole (12), the wire outgoing terminal (1) is located at the top of the shielding type solid-sealed pole (12), one end of the flexible connection (2) is connected with the inside of the wire outgoing terminal (1), one end of the other end of the flexible connection (2) is fixedly connected with a movable conducting rod of the vacuum arc extinguish chamber (4) through one end of the circuit breaker insulating pull rod (3), and the other end of the circuit breaker insulating pull rod (3) is connected with a circuit breaker mechanism (13);
the main circuit part of the isolating switch comprises an isolating static contact (6), a disconnecting link assembly (7), an isolating contact seat (8), an insulating pull rod (9), a grounding contact (10) and a wire inlet terminal (11), wherein the wire inlet terminal (11) is located at the bottom of a shielding type solid-sealed terminal post (12), the isolating contact seat (8) is fixed inside the wire inlet terminal (11), the disconnecting link assembly (7) is rotatably arranged on the isolating contact seat (8), one end of the insulating pull rod (9) is connected with the disconnecting link assembly (7), the other end of the insulating pull rod (9) is connected with the output end of an isolating grounding mechanism (14) through a connecting rod, the isolating static contact (6) is installed on the inner wall of the shielding type solid-sealed terminal post (12), and the grounding contact (10) is installed on the inner side of the shielding type solid-sealed terminal post (12) and located at the opposite end of the isolating static contact (6).
2. The lower isolating circuit breaker according to claim 1, wherein: and the other end of the arc extinguish chamber static end conductor (5) is connected with the isolation static contact (6).
3. The lower isolating circuit breaker according to claim 1, wherein: the isolation grounding mechanism (14) drives the connecting rod to linearly and horizontally move, the disconnecting link assembly (7) is driven to rotate along the isolation contact seat (8) through the insulating pull rod (9), and the disconnecting link assembly (7) can rotate to be connected with the isolation static contact (6) or the grounding contact (10).
4. The lower isolating circuit breaker according to claim 1, wherein: the circuit breaker mechanism (13) drives a movable conducting rod of the vacuum arc extinguish chamber (4) to do linear motion through the circuit breaker insulation pull rod (3), and a static end conducting rod of the vacuum arc extinguish chamber (4) is connected with a static terminal of the arc extinguish chamber.
5. The lower isolating circuit breaker according to claim 1, wherein: the vacuum arc extinguish chamber (4) and the arc extinguish chamber static end conductor (5) are both poured in the shielding type solid-sealed polar pole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022644552.XU CN213781923U (en) | 2020-11-16 | 2020-11-16 | Lower isolation breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022644552.XU CN213781923U (en) | 2020-11-16 | 2020-11-16 | Lower isolation breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213781923U true CN213781923U (en) | 2021-07-23 |
Family
ID=76916853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022644552.XU Active CN213781923U (en) | 2020-11-16 | 2020-11-16 | Lower isolation breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213781923U (en) |
-
2020
- 2020-11-16 CN CN202022644552.XU patent/CN213781923U/en active Active
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