High-voltage isolating switch capable of being switched on stably
By designing cleaning mechanisms and auxiliary mechanisms in the high-voltage isolation switch, the poor contact problems caused by impurities attached to the moving contacts are solved, and the stable closing of the moving contacts and the knife switch is achieved, which enhances the safety of the equipment.
Patent Information
- Application Number
- CN202421343269.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-06-13
AI Technical Summary
After the high-voltage isolation switch is opened, the moving contacts are prone to impurities, resulting in poor contact when closing the knife switch, resulting in arcing, and safety hazards.
A high-voltage isolation switch including a cleaning mechanism and an auxiliary mechanism is designed. The cleaning mechanism is composed of a slide rod, a collar, a spring, a brush, etc. The auxiliary mechanism includes a convex plate, a wavy groove, and a crossbar. Through the synergistic effect of these components, The brush can effectively clean the surface of the moving contact and avoid impurities adhering.
Ensure the stable closing of the moving contact and the knife switch, avoid the generation of arcs, and improve the safety of the equipment.
Smart Images
Figure CN222320068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage isolating switches, in particular to a high-voltage isolating switch capable of stably closing the switch. Background Art
[0002] High-voltage disconnectors are important switchgear in the electrical systems of power plants and substations and must be used in conjunction with high-voltage circuit breakers.
[0003] When the isolating switch is opened, the moving contact is exposed and impurities are easily attached to the moving contact. When the knife switch and the moving contact are closed, if there are impurities attached to the moving contact at this time, it will cause poor contact between the moving contact and the knife switch, and may generate a huge electric arc, posing a safety hazard. Utility Model Content
[0004] The utility model aims to provide a high-voltage disconnector capable of stable closing, so as to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-voltage disconnector capable of stable closing, comprising a base, a No. 1 insulator is fixedly installed on the top of the base, an outlet connecting plate is fixedly installed on the top of the No. 1 insulator, a moving contact is fixedly installed on the top of the outlet connecting plate, a No. 2 insulator is fixedly installed on the top of the base, an incoming connecting plate is fixedly installed on the top of the No. 2 insulator, a static contact is fixedly installed on the top of the incoming connecting plate, a knife switch is hinged on the outer wall of the static contact, a lock buckle is fixedly installed on the inner wall of the knife switch, a buckle groove for the lock buckle to be inserted is provided on the moving contact, a cleaning mechanism for cleaning the moving contact is provided on the No. 1 insulator, the surface of the moving contact can be cleaned by providing the cleaning mechanism to prevent impurities from adhering to the outer wall of the moving contact, resulting in unstable closing of the knife switch and the moving contact, an auxiliary mechanism for improving the cleaning effect is provided on the outlet connecting plate, and the cleaning effect of the brush on the moving contact can be improved by providing the auxiliary mechanism, and the cleaning mechanism comprises:
[0006] A slide bar, the slide bar is slidably connected to the inner wall of the outlet connection plate, a connecting rod is fixedly installed on the side wall of the slide bar, a brush is slidably connected to the inner wall of the connecting rod, a triangular plate is fixedly installed on the bottom of the slide bar, an inclined groove is provided on the triangular plate, and the slide bar can be driven to move by setting the triangular plate;
[0007] A collar, the collar is slidably connected to the outer wall of the No. 1 insulator, a push rod is fixedly installed on the side wall of the collar, an insulating rod is fixedly installed on the end of the push rod away from the collar, a limit rod is fixedly installed on the side wall of the collar, the outer wall of the limit rod is attached to the inner wall of the inclined groove, and the collar can be arranged to drive the limit rod to move downward;
[0008] A spring, one end of which is fixedly mounted on the side wall of the slide bar, and the other end of which is fixedly mounted on the inner wall of the outlet connection plate. The slide bar can be pulled to reset by setting the spring.
[0009] Preferably, the auxiliary mechanism comprises a convex plate, and the convex plate is fixedly mounted on the top of the outlet connecting plate.
[0010] Preferably, the convex plate is provided with a wave groove, and the wave groove can provide guidance for the cross bar.
[0011] Preferably, a cross bar is fixedly mounted on the side wall of the brush, and the outer wall of the cross bar is fitted to the inner wall of the wave groove. By arranging the cross bar in conjunction with the wave groove, the brush can be driven to move reciprocally up and down.
[0012] Preferably, the outer wall of the insulating rod is attached to the outer wall of the knife switch.
[0013] Preferably, the brush is attached to the outer wall of the moving contact. By providing the brush, the moving contact can be cleaned to prevent impurities from causing poor contact between the moving contact and the knife switch.
[0014] Compared with the prior art, the utility model provides a high-voltage disconnector that can be stably closed, which has the following beneficial effects:
[0015] 1. This high-voltage disconnector with stable closing function will squeeze the insulating rod when the knife switch is closed with the moving contact. At the same time, the push rod, collar, limit rod, inclined groove, triangle plate, slide rod, connecting rod and brush can be used to clean the surface of the moving contact to prevent impurities from adhering to the outer wall of the moving contact, which will cause unstable closing of the knife switch and the moving contact.
[0016] 2. The high-voltage disconnector capable of stable closing, while the connecting rod drives the brush to slide, cooperates with the cross bar and the glass groove, so that the brush can be reciprocated up and down while moving in parallel, thereby improving the cleaning effect of the brush on the moving contact. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall open-gate structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the overall closing state structure of the utility model;
[0019] Figure 3 It is a schematic diagram of the structure of the utility model in a top view in an overall open state;
[0020] Figure 4 It is a schematic diagram of the explosion structure of the slide bar of the utility model;
[0021] Figure 5 It is a schematic diagram of the overall structure of the sleeve of the utility model;
[0022] Figure 6 For this utility model Figure 2 A schematic diagram of the enlarged structure at point A;
[0023] Figure 7 For this utility model Figure 3 Schematic diagram of the enlarged structure at B.
[0024] In the figure: 1. base; 2. No. 1 insulator; 3. outgoing line connection plate; 4. moving contact; 5. No. 2 insulator; 6. incoming line connection plate; 7. static contact; 8. knife switch; 81. lock; 82. buckle groove; 9. cleaning mechanism; 91. slide bar; 92. ring; 93. spring; 94. connecting rod; 95. brush; 96. triangle plate; 97. inclined groove; 98. push rod; 99. insulating rod; 910. limit rod; 10. auxiliary mechanism; 101. convex plate; 102. wave groove; 103. cross bar. DETAILED DESCRIPTION
[0025] like Figure 1-Figure 7 As shown, the utility model provides a technical solution: a high-voltage disconnector capable of stable closing, comprising a base 1, a No. 1 insulator 2 is fixedly installed on the top of the base 1, an outgoing line connection plate 3 is fixedly installed on the top of the No. 1 insulator 2, a moving contact 4 is fixedly installed on the top of the outgoing line connection plate 3, a No. 2 insulator 5 is fixedly installed on the top of the base 1, an incoming line connection plate 6 is fixedly installed on the top of the No. 2 insulator 5, a static contact 7 is fixedly installed on the top of the incoming line connection plate 6, and a knife switch 8 is hinged on the outer wall of the static contact 7, A lock buckle 81 is fixedly installed on the inner wall of the knife switch 8, and a buckle groove 82 for the lock buckle 81 to be inserted into is opened on the moving contact 4. A cleaning mechanism 9 for cleaning the moving contact 4 is provided on the No. 1 insulator 2. By setting the cleaning mechanism 9, the surface of the moving contact 4 can be cleaned to prevent impurities from adhering to the outer wall of the moving contact 4, which causes unstable closing of the knife switch 8 and the moving contact 4. An auxiliary mechanism 10 for improving the cleaning effect is provided on the outlet connection plate 3. By setting the auxiliary mechanism 10, the cleaning effect of the brush 95 on the moving contact 4 can be improved.
[0026] The cleaning mechanism 9 includes a slide bar 91, a collar 92, a spring 93, a connecting rod 94, a brush 95, a triangular plate 96, an oblique groove 97, a push rod 98, an insulating rod 99, and a limit rod 910; the slide bar 91 is slidably connected to the inner wall of the outlet connecting plate 3, the side wall of the slide bar 91 is fixedly installed with a connecting rod 94, the inner wall of the connecting rod 94 is slidably connected with a brush 95, the brush 95 fits against the outer wall of the moving contact 4, and the slide bar 91 slides while cooperating with the connecting rod 94 to drive the brush 95 to slide synchronously, and make the brush 95 fit against the outer wall of the moving contact 4 and slide. At this time, the surface of the moving contact 4 can be cleaned by the movement of the brush 95, the bottom of the slide bar 91 is fixedly installed with a triangular plate 96, the triangular plate 96 is provided with an oblique groove 97, the collar 92 is slidably connected to the outer wall of the No. 1 insulator 2, the side wall of the collar 92 is fixedly installed with a push rod 98, and the end of the push rod 98 away from the collar 92 is fixedly installed There is an insulating rod 99, which is made of ceramic material and has good insulation. The outer wall of the insulating rod 99 is attached to the outer wall of the knife switch 8, and the side wall of the ring 92 is fixedly installed with a limit rod 910. When the knife switch 8 is rotated to close the moving contact 4, the knife switch 8 will squeeze the insulating rod 99, so that the insulating rod 99 squeezes the push rod 98 downward, so that the push rod 98 squeezes the ring 92 downward, so that the ring 92 drives the limit rod 910 to move downward, and the outer wall of the limit rod 910 is attached to the inner wall of the inclined groove 97. When the limit rod 910 is attached to the inner wall of the inclined groove 97 and moves downward, it will squeeze the inclined groove 97, so that the triangular plate 96 drives the slide bar 91 to slide toward the end away from the moving contact 4. One end of the spring 93 is fixedly installed on the side wall of the slide bar 91, and the other end of the spring 93 is fixedly installed on the inner wall of the outlet connecting plate 3. The slide bar 91 can be pulled to reset by the elasticity of the spring 93.
[0027] The auxiliary mechanism 10 comprises a convex plate 101, a wave groove 102 and a cross bar 103; the convex plate 101 is fixedly mounted on the top of the outlet connecting plate 3, a wave groove 102 is provided on the convex plate 101, a cross bar 103 is fixedly mounted on the side wall of the brush 95, and when the connecting rod 94 drives the brush 95 to slide, the brush 95 drives the cross bar 103 to move in contact with the inner wall of the wave groove 102, and the outer wall of the cross bar 103 is in contact with the inner wall of the wave groove 102. Under the guiding action of the wave groove 102, the cross bar 103 is moved back and forth up and down, and then the cross bar 103 drives the brush 95 to slide back and forth up and down on the inner wall of the connecting rod 94.
[0028] Working principle: When the knife switch 8 rotates to close the moving contact 4, the knife switch 8 will squeeze the insulating rod 99, so that the insulating rod 99 squeezes the push rod 98 downward, so that the push rod 98 squeezes the ring 92 downward, so that the ring 92 drives the limit rod 910 to move downward, and at this time the limit rod 910 will fit on the inner wall of the inclined groove 97 and move downward, and squeeze the inclined groove 97, so that the triangular plate 96 drives the slide rod 91 to slide toward the end away from the moving contact 4 and stretch the spring 93. At the same time, the connecting rod 94 will drive the brush 95 to move synchronously toward the end away from the moving contact 4, and make the brush 95 fit on the outer wall of the moving contact 4 and slide. At this time, the surface of the moving contact 4 can be cleaned by the movement of the brush 95 to prevent impurities from adhering to the outer wall of the moving contact 4, resulting in unstable closing of the knife switch 8 and the moving contact 4.
[0029] When the connecting rod 94 drives the brush 95 to slide, the brush 95 will drive the cross bar 103 to move in contact with the inner wall of the wave groove 102. At this time, under the guidance of the wave groove 102, the cross bar 103 will move back and forth up and down, and then the cross bar 103 will drive the brush 95 to slide back and forth up and down on the inner wall of the connecting rod 94, so that the brush 95 can shake back and forth up and down while moving in parallel, thereby improving the cleaning effect of the brush 95 on the moving contact 4.
[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.
Claims
1. A high-voltage disconnector capable of stable closing, comprising a base (1), a No. 1 insulator (2) being fixedly mounted on the top of the base (1), an outlet connection plate (3) being fixedly mounted on the top of the No. 1 insulator (2), a moving contact (4) being fixedly mounted on the top of the outlet connection plate (3), a No. 2 insulator (5) being fixedly mounted on the top of the base (1), an incoming connection plate (6) being fixedly mounted on the top of the No. 2 insulator (5), a stationary contact (7) being fixedly mounted on the top of the incoming connection plate (6), a knife switch (8) being hingedly mounted on the outer wall of the stationary contact (7), a lock buckle (81) being fixedly mounted on the inner wall of the knife switch (8), a buckle groove (82) for the lock buckle (81) to be snapped into being provided on the moving contact (4), characterized in that: The first insulator (2) is provided with a cleaning mechanism (9) for cleaning the moving contact (4), and the outlet connection plate (3) is provided with an auxiliary mechanism (10) for improving the cleaning effect, wherein the cleaning mechanism (9) comprises: A slide bar (91), the slide bar (91) is slidably connected to the inner wall of the outlet connecting plate (3), a connecting rod (94) is fixedly installed on the side wall of the slide bar (91), a brush (95) is slidably connected to the inner wall of the connecting rod (94), a triangular plate (96) is fixedly installed on the bottom of the slide bar (91), and an inclined groove (97) is provided on the triangular plate (96); A collar (92), the collar (92) being slidably connected to the outer wall of the No. 1 insulator (2), a push rod (98) being fixedly mounted on the side wall of the collar (92), an insulating rod (99) being fixedly mounted on one end of the push rod (98) away from the collar (92), a limiting rod (910) being fixedly mounted on the side wall of the collar (92), and an outer wall of the limiting rod (910) being in contact with an inner wall of the inclined groove (97); A spring (93), one end of the spring (93) is fixedly mounted on the side wall of the slide bar (91), and the other end of the spring (93) is fixedly mounted on the inner wall of the outlet connection plate (3).
2. A high-voltage disconnector capable of stable closing according to claim 1, characterized in that: The auxiliary mechanism (10) comprises a convex plate (101), and the convex plate (101) is fixedly mounted on the top of the outlet connection plate (3).
3. A high-voltage disconnector capable of stable closing according to claim 2, characterized in that: The convex plate (101) is provided with a wave groove (102).
4. A high-voltage disconnector capable of stable closing according to claim 1, characterized in that: A cross bar (103) is fixedly mounted on the side wall of the brush (95), and the outer wall of the cross bar (103) is in contact with the inner wall of the wave groove (102).
5. A high-voltage disconnector capable of stable closing according to claim 1, characterized in that: The outer wall of the insulating rod (99) is fitted onto the outer wall of the knife switch (8).
6. A high-voltage disconnector capable of stable closing according to claim 1, characterized in that: The brush (95) is attached to the outer wall of the moving contact (4).