Outdoor high-voltage alternating-current isolating switch
By setting a barrier rod, a second spring and a top block on the knife switch of the high-voltage AC isolating switch, the knife switch plate is quickly separated by gravity and elastic force, which solves the problem of the arc generation time of the knife switch plate being too slow in the prior art, and improves the service life of the equipment.
Patent Information
- Application Number
- CN202420926715.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The movement speed of the knife switch on the existing high-voltage isolation switch is too slow, resulting in a long arc generation time, which can easily damage the equipment and affect the service life.
An outdoor high-voltage AC isolation switch is designed. By setting a barrier rod, a second spring and a top block on the knife switch plate, when the knife switch plate is closed, the barrier rod blocks the knife switch plate, and the second spring is in a compressed state. After lifting the barrier rod, the knife switch plate is quickly separated by gravity and elastic force, reducing the arc generation time.
The rapid separation of the knife switch plate is achieved, the arc generation time is reduced, and the service life of the isolating switch equipment is improved.
Smart Images
Figure CN222826288U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of isolating switches, in particular to an outdoor high-voltage AC isolating switch. Background Art
[0002] As we all know, the isolating switch, also known as the knife switch, is an electrical appliance used in high-voltage switchgear. The isolating switch is mainly used to isolate the power supply, switch operation, connect and disconnect the low-current circuit, and play an isolating role in the circuit. Its main feature is that it has no arc extinguishing ability and can only open and close the circuit without load current. Its working principle and structure are relatively simple, but due to its large usage and high working reliability requirements, it has a great impact on the design, establishment and safe operation of substations and power plants.
[0003] The movement of the knife switch on the existing high-voltage disconnector requires the staff to use insulating tools to drive it, or the knife switch is driven by mechanical equipment. However, the above two methods make the movement speed of the knife switch too slow, and the arc generation time is long, which is easy to cause damage to the disconnector equipment and affect its service life. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides an outdoor high-voltage AC isolating switch, which can quickly separate the switch blades, reduce the time of arc generation, and increase the service life of the isolating switch equipment.
[0006] (II) Technical solution
[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an outdoor high-voltage AC disconnector, comprising a main frame, wherein two insulators are arranged at the bottom of the main frame, wherein a first connecting frame with an opening at the bottom is fixedly arranged at the bottom end of one of the insulators, and a second connecting frame with an opening at the bottom is fixedly arranged at the bottom end of the other insulator, a connecting shaft is arranged on the first connecting frame, a knife gate piece is rotatably mounted on the connecting shaft, inclined slide grooves are arranged on both sides of the second connecting frame, the top of the slide groove is away from the knife gate piece and the bottom of the slide groove is close to the knife gate piece, a baffle rod for blocking the knife gate piece is installed inside the slide groove, a top block that abuts against the knife gate piece is arranged on the top of the knife gate piece, and a plurality of second springs are arranged between the top block and the top of the second connecting frame.
[0008] Furthermore, fixed blocks are provided on both sides of the second connecting frame, and a sliding rod is provided at the bottom of each of the fixed blocks. The sliding rod and the blocking rod are slidably connected, and the direction of the sliding rod is parallel to the direction of the sliding groove.
[0009] Furthermore, a first spring is installed on the outside of each sliding rod, one end of the first spring abuts against the fixed block, and the other end of the first spring abuts against the blocking rod.
[0010] Furthermore, through holes matching the slide rod are provided on both sides of the blocking rod.
[0011] Furthermore, shift blocks are provided at both ends of the blocking rod, and the diameter of the shift blocks is greater than the diameter of the blocking rod.
[0012] Furthermore, one end of the knife gate piece close to the blocking rod is provided with a chamfer.
[0013] (III) Beneficial effects
[0014] Compared with the prior art, the utility model provides an outdoor high-voltage AC isolating switch, which has the following beneficial effects:
[0015] The outdoor high-voltage AC disconnector is provided with a blocking rod, a second spring and a top block. When the knife gate is closed, the blocking rod blocks the knife gate. At this time, the second spring is in a compressed state. When the blocking rod is lifted along the slide groove, the knife gate loses the blocking of the blocking rod and falls downward due to gravity. At the same time, the knife gate falls downward due to the elastic force of the second spring. The simultaneous action of gravity and elastic force on the knife gate will quickly separate the knife gate, thereby reducing the time of arc generation and improving the service life of the disconnector device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;
[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model after the knife switch piece is separated.
[0019] In the figure: 1, main frame; 2, insulator; 3, first connecting frame; 4, connecting shaft; 5, knife plate; 6, second connecting frame; 7, slide groove; 8, stop rod; 9, fixed block; 10, slide rod; 11, first spring; 12, second spring; 13, top block; 14, shift block. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model discloses an outdoor high-voltage AC disconnector, comprising a main frame 1, wherein two insulators 2 are arranged at the bottom of the main frame 1, wherein a first connecting frame 3 with an opening at the bottom is fixedly arranged at the bottom end of one of the insulators 2, and a second connecting frame 6 with an opening at the bottom is fixedly arranged at the bottom end of the other insulator 2, wherein a connecting shaft 4 is arranged on the first connecting frame 3, and a knife switch piece 5 is rotatably mounted on the connecting shaft 4, and inclined slide grooves 7 are arranged on both sides of the second connecting frame 6, and the top of the slide groove 7 is away from the knife switch piece 5 and the slide The bottom of the groove 7 is close to the knife gate piece 5, and a blocking rod 8 for blocking the knife gate piece 5 is installed inside the slide groove 7. A top block 13 is arranged on the top of the knife gate piece 5 to resist the knife gate piece 5, and several second springs 12 are arranged between the top block 13 and the top of the second connecting frame 6. After the knife gate piece 5 is closed, the second spring 12 is in a compressed state. When the blocking rod 8 is lifted along the slide groove 7, the knife gate piece 5 loses the blocking of the blocking rod 8, and the knife gate piece 5 falls downward due to gravity. At the same time, the knife gate piece 5 falls downward due to the elastic force of the second spring 12.
[0022] Among them, fixed blocks 9 are provided on both sides of the second connecting frame 6, and a sliding rod 10 is provided at the bottom of each fixed block 9. The sliding rod 10 and the blocking rod 8 are slidably connected. The direction of the sliding rod 10 is parallel to the direction of the sliding groove 7. The function of the sliding rod 10 is mainly to guide the first spring 11.
[0023] Among them, a first spring 11 is installed on the outside of each sliding rod 10, one end of the first spring 11 is against the fixed block 9, and the other end of the first spring 11 is against the baffle rod 8, thereby improving the stability of the baffle rod 8 supporting the knife gate piece 5.
[0024] Wherein, through holes matching with the slide bar 10 are arranged on both sides of the blocking rod 8 .
[0025] Wherein, shifting blocks 14 are provided at both ends of the blocking rod 8 , and the diameter of the shifting blocks 14 is larger than the diameter of the blocking rod 8 , so as to facilitate the shifting of the blocking rod 8 .
[0026] Among them, one end of the knife gate piece 5 close to the blocking rod 8 is provided with a chamfer.
[0027] To sum up, when this outdoor high-voltage AC disconnector is in use, after the knife gate 5 is closed, the blocking rod 8 blocks the knife gate 5. At this time, the second spring 12 is in a compressed state. When the blocking rod 8 is lifted along the slide groove 7, the knife gate 5 loses the blocking of the blocking rod 8, and the knife gate 5 falls downward due to gravity. At the same time, the knife gate 5 falls downward due to the elastic force of the second spring 12. The simultaneous action of gravity and elastic force on the knife gate 5 will quickly separate the knife gate 5, thereby reducing the time of arc generation and improving the service life of the disconnector equipment.
[0028] The technical terms or scientific terms used in the description of this application should be the common meanings understood by ordinary technicians in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and other words indicating orientation used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, so it cannot be understood as a limitation on this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance.
[0029] The words "one", "an" or "the" and the like used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the existence of at least one. The words "include" or "comprise" and the like used in the description of this application mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.
[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An outdoor high-voltage AC disconnector, comprising a main frame (1), characterized in that: Two insulators (2) are arranged at the bottom of the main frame (1), wherein a first connecting frame (3) with an opening at the bottom is fixedly arranged at the bottom end of one of the insulators (2), and a second connecting frame (6) with an opening at the bottom is fixedly arranged at the bottom end of the other insulator (2), the first connecting frame (3) is provided with a connecting shaft (4), a knife gate piece (5) is rotatably mounted on the connecting shaft (4), inclined slide grooves (7) are arranged on both sides of the second connecting frame (6), the top of the slide groove (7) is away from the knife gate piece (5) and the bottom of the slide groove (7) is close to the knife gate piece (5), a blocking rod (8) for blocking the knife gate piece (5) is installed inside the slide groove (7), a top block (13) abutting against the knife gate piece (5) is arranged at the top of the knife gate piece (5), and a plurality of second springs (12) are arranged between the top block (13) and the top of the second connecting frame (6).
2. An outdoor high-voltage AC disconnector according to claim 1, characterized in that: Fixed blocks (9) are provided on both sides of the second connecting frame (6), and a sliding rod (10) is provided at the bottom of each of the fixed blocks (9). The sliding rod (10) and the blocking rod (8) are slidably connected, and the direction of the sliding rod (10) is parallel to the direction of the sliding groove (7).
3. An outdoor high-voltage AC disconnect switch according to claim 2, characterized in that: A first spring (11) is installed outside each of the slide bars (10), one end of the first spring (11) abuts against the fixed block (9), and the other end of the first spring (11) abuts against the blocking bar (8).
4. An outdoor high-voltage AC disconnector according to claim 2, characterized in that: Through holes matching the slide bar (10) are arranged on both sides of the blocking rod (8).
5. The outdoor high-voltage AC disconnector according to claim 1, characterized in that: Both ends of the blocking rod (8) are provided with shifting blocks (14), and the diameter of the shifting blocks (14) is greater than the diameter of the blocking rod (8).
6. An outdoor high-voltage AC disconnector according to claim 1, characterized in that: One end of the knife gate piece (5) close to the blocking rod (8) is provided with a chamfer.