Magnetic control mechanism of vacuum circuit breaker
By designing the adsorption and release mechanism of fixed magnets and movable magnets in the vacuum circuit breaker, combined with the design of sliding slots and slots, the problem that the existing vacuum circuit breaker magnet control mechanism needs to be continuously supplied is solved, and the contact is always in contact is realized, making it convenient to control the vacuum circuit breaker.
Patent Information
- Application Number
- CN202420164401.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-01-24
AI Technical Summary
The existing vacuum circuit breaker magnetron needs to be continuously supplied with power to maintain contact between the contact and the fixed contact when the switch is closed, which is inconvenient to control.
A vacuum circuit breaker magnet control mechanism is designed. By setting a fixed magnet and a moving magnet in the vacuum cavity, the adsorption and release of the magnet is controlled by electromagnetic force to achieve contact and separation of contacts. Through the design of sliding grooves and slots, the limit fixation of the fixing rod is cancelled to realize the function of always contacting the contacts.
It realizes that the contact between the vacuum circuit breaker contacts and the fixed contacts are maintained without continuous power supply, so as to facilitate the control of the closing and circuit breaking operation of the vacuum circuit breaker.
Smart Images
Figure CN222672900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vacuum circuit breaker magnetic control mechanisms, in particular to a vacuum circuit breaker magnetic control mechanism. Background Art
[0002] The magnetic control mechanism of vacuum circuit breaker is a device used to control the closing and closing actions of vacuum circuit breaker. The magnetic control mechanism is usually composed of electromagnet, spring, mechanical transmission, etc.
[0003] In the prior art, under normal working conditions, the magnetic control mechanism maintains a closed state under the action of magnetic force, so that the contacts of the vacuum circuit breaker are in contact with the fixed contacts, and the current can pass normally. When the circuit needs to be disconnected, the current on the energized coil will generate magnetic force, which will overcome the force of the mechanical spring, causing the contacts to leave the fixed contacts, thereby achieving the purpose of circuit breaking.
[0004] However, in the prior art, when the magnetic control mechanism of the vacuum circuit breaker is in the closed state, the power supply needs to continuously supply power to the electromagnet to ensure that the contact and the fixed contact are in contact and the current can pass normally, which is very inconvenient to control. Utility Model Content
[0005] The purpose of the utility model is to provide a magnetic control mechanism for a vacuum circuit breaker to solve the problems raised in the above background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vacuum circuit breaker, a vacuum chamber is arranged inside the bottom of the vacuum circuit breaker, a first fixed magnet is arranged in the vacuum chamber, an insulating pull rod is inserted in the middle of the first fixed magnet, the top of the middle of the first fixed magnet is connected to a trip spring, the top of the trip spring is connected to the bottom of the first moving magnet, a fixed rod is arranged on the top of the first moving magnet, two groups of slots are opened on the fixed rod, and a limit block is arranged on the top of the fixed rod.
[0007] Preferably, a plurality of groups of sealed vacuum poles are arranged on the top of the vacuum circuit breaker, and the sealed vacuum poles are used to generate a high-intensity and stable magnetic field in a vacuum environment. A junction box is arranged on the side of the vacuum circuit breaker, and the vacuum circuit breaker is connected to the line through the junction box.
[0008] Preferably, fixed contacts are provided on both sides of the top of the first fixed magnet, and contacts are provided on both sides of the bottom of the first moving magnet. The first moving magnet can descend along the insulating pull rod through electromagnetic force and be adsorbed by the first fixed magnet, so that the contacts are in contact with the fixed contacts.
[0009] Preferably, a sliding groove is provided on the top of the vacuum chamber provided inside the bottom of the vacuum circuit breaker, and the fixing rod is inserted into the sliding groove, and the fixing rod can be lifted and slid in the sliding groove.
[0010] Preferably, a telescopic groove is opened on the side of the bottom end of the sliding groove, and a second fixed magnet is arranged at the bottom of the telescopic groove. The middle part of the outer side of the second fixed magnet is connected to a spring, and the other end of the spring is connected to the second moving magnet. The second moving magnet can be attracted to and contact the second fixed magnet through electromagnetic force.
[0011] Preferably, a plug-in column is provided on the outer side of the second moving magnet, and the plug-in column can be plugged into a slot provided on the fixing rod to limit and fix the fixing rod.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] The utility model discloses a magnetic control mechanism of a vacuum circuit breaker. When the vacuum circuit breaker is operated to close, the second fixed magnet first generates magnetic force by powering on to attract the second moving magnet. The second moving magnet begins to squeeze the spring. The electromagnetic force causes the second fixed magnet to contact the second moving magnet. At the same time, the second moving magnet drives the plug-in column to retract from the fixed rod opened on the fixed rod into the telescopic groove, canceling the limit fixation of the fixed rod. After that, the first fixed magnet generates magnetic force by powering on to attract the first moving magnet connected to the top of the opening spring. The contact at the bottom of the first moving magnet contacts the fixed contact at the top of the first fixed magnet to perform the closing operation. At the same time, the first moving magnet begins to close. The fixed rod is driven to descend in the sliding groove, and the power supply to the second fixed magnet and the second moving magnet is first canceled, so that the second moving magnet drives the plug-in column to pop out from the telescopic groove through the tension of the spring and plug into the slot opened at the top of the fixed rod, and the slot is limited and fixed. The first moving magnet connected to the bottom of the slot is fixedly clamped on the top of the first fixed magnet, so that the contact at the bottom of the first moving magnet is always in contact with the fixed contact, and then the power supply to the first fixed magnet and the first moving magnet is canceled. The power supply does not have to supply power to the electromagnet all the time, which is convenient for controlling the vacuum circuit breaker; a limit block is set on the top of the slot, and the limit block limits the slot to prevent the limit block from sliding out of the sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;
[0016] Figure 3 for Figure 2 A schematic diagram of the enlarged structure in the middle.
[0017] In the figure: vacuum circuit breaker 1, sealed vacuum pole 2, junction box 3, first fixed magnet 4, insulating pull rod 5, opening spring 6, first moving magnet 7, contact 8, fixed contact 9, fixed rod 10, slot 11, limit block 12, telescopic slot 13, second fixed magnet 14, spring 15, second moving magnet 16, plug-in column 17, sliding slot 18. DETAILED DESCRIPTION
[0018] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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.
[0019] See also Figures 1 to 3 The utility model provides a technical solution: a vacuum circuit breaker 1, a vacuum chamber is arranged inside the bottom of the vacuum circuit breaker 1, a first fixed magnet 4 is arranged in the vacuum chamber, an insulating pull rod 5 is inserted in the middle of the first fixed magnet 4, a trip spring 6 is connected to the top of the middle of the first fixed magnet 4, the top of the trip spring 6 is connected to the bottom of the first moving magnet 7, a fixed rod 10 is arranged on the top of the first moving magnet 7, two groups of slots 11 are opened on the fixed rod 10, and a limit block 12 is arranged on the top of the fixed rod 10; a plurality of groups of sealed vacuum poles 2 are arranged on the top of the vacuum circuit breaker 1, and the sealed vacuum poles 2 are used to generate a high-intensity and stable magnetic field in a vacuum environment, a sealed junction box 3 is arranged on the side of the vacuum circuit breaker 1, and the vacuum circuit breaker 1 is connected to the line through the junction box 3; fixed contacts 9 are arranged on both sides of the top of the first fixed magnet 4, and the bottom of the first moving magnet 7 is arranged on both sides There is a contact 8, and the first moving magnet 7 can descend along the insulating pull rod 5 and be adsorbed by the first fixed magnet 4 through electromagnetic force, so that the contact 8 is in contact with the fixed contact 9; a sliding groove 18 is provided on the top of the vacuum chamber opened inside the bottom of the vacuum circuit breaker 1, and the fixed rod 10 is inserted in the sliding groove 18, and the fixed rod 10 can be lifted and slid in the sliding groove 18; a telescopic groove 13 is provided on the side of the bottom end of the sliding groove 18, and a second fixed magnet 14 is provided at the bottom of the telescopic groove 13, and a spring 15 is connected to the middle part of the outer side of the second fixed magnet 14, and the other end of the spring 15 is connected to the second moving magnet 16, and the second moving magnet 16 can be attracted by the second fixed magnet 14 and contact the second fixed magnet 14 through electromagnetic force; a plug-in column 17 is provided on the outer side of the second moving magnet 16, and the plug-in column 17 can be plugged into the slot 11 opened on the fixed rod 10 to limit and fix the fixed rod 10.
[0020] The utility model proposes a magnetic control mechanism of a vacuum circuit breaker. When the vacuum circuit breaker 1 is operated to close the gate, the second fixed magnet 14 first generates a magnetic force by being energized to absorb the second moving magnet 16. The second moving magnet 16 begins to squeeze the spring 15. The electromagnetic force causes the second fixed magnet 14 to contact the second moving magnet 16. At the same time, the second moving magnet 16 drives the plug-in column 17 to retract from the fixed rod 10 opened on the fixed rod 10 into the telescopic groove 13, canceling the limit fixation of the fixed rod 10. After that, the first fixed magnet 4 generates a magnetic force by being energized to absorb the first moving magnet 7 connected to the top of the opening spring 6, so that the contact 8 at the bottom of the first moving magnet 7 contacts the fixed contact 9 at the top of the first fixed magnet 4, and the closing operation is performed. At the same time, the first moving magnet 7 starts to drive the fixed rod 10 descends in the sliding groove 18, first cancel the power supply to the second fixed magnet 14 and the second moving magnet 16, so that the second moving magnet 16 drives the plug-in column 17 to pop out from the telescopic groove 13 through the tension of the spring 15 and plug into the slot 11 opened at the top of the fixed rod 10, and the slot 11 is limited and fixed, and the first moving magnet 7 connected to the bottom of the slot 11 is fixedly clamped on the top of the first fixed magnet 4, so that the contact 8 at the bottom of the first moving magnet 7 is always in contact with the fixed contact 9, and then cancel the power supply to the first fixed magnet 4 and the first moving magnet 7. The power supply does not have to supply power to the electromagnet all the time, which is convenient for controlling the vacuum circuit breaker 1; a limit block 12 is set at the top of the slot 11, and the limit block 12 limits the slot 11 to prevent the limit block 12 from sliding out of the sliding groove 18.
[0021] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.
Claims
1. A magnetic control mechanism for a vacuum circuit breaker, characterized in that: include: A vacuum circuit breaker (1), wherein a vacuum chamber is arranged inside the bottom of the vacuum circuit breaker (1), a first fixed magnet (4) is arranged in the vacuum chamber, an insulating pull rod (5) is inserted in the middle of the first fixed magnet (4), the top of the middle of the first fixed magnet (4) is connected to a trip spring (6), the top of the trip spring (6) is connected to the bottom of a first moving magnet (7), a fixed rod (10) is arranged at the top of the first moving magnet (7), two groups of slots (11) are opened on the fixed rod (10), and a limit block (12) is arranged at the top of the fixed rod (10).
2. A vacuum circuit breaker magnetic control mechanism according to claim 1, characterized in that: A sealed vacuum pole (2) is arranged on the top of the vacuum circuit breaker (1), and the sealed vacuum pole (2) is used to generate a high-intensity and stable magnetic field in a vacuum environment. A junction box (3) is arranged on the side of the vacuum circuit breaker (1), and the vacuum circuit breaker (1) is connected to a line via the junction box (3).
3. A vacuum circuit breaker magnetic control mechanism according to claim 2, characterized in that: Fixed contacts (9) are arranged on both sides of the top of the first fixed magnet (4), and contacts (8) are arranged on both sides of the bottom of the first moving magnet (7). The first moving magnet (7) can be lowered along the insulating pull rod (5) by electromagnetic force and adsorbed on the first fixed magnet (4), so that the contacts (8) are in contact with the fixed contacts (9).
4. A vacuum circuit breaker magnetic control mechanism according to claim 3, characterized in that: A sliding groove (18) is provided at the top of the vacuum chamber provided inside the bottom of the vacuum circuit breaker (1), and the fixing rod (10) is inserted into the sliding groove (18). The fixing rod (10) can be lifted and slid in the sliding groove (18).
5. A vacuum circuit breaker magnetic control mechanism according to claim 4, characterized in that: A telescopic groove (13) is provided on the side of the bottom end of the sliding groove (18), a second fixed magnet (14) is provided at the bottom of the telescopic groove (13), a spring (15) is connected to the middle of the outer side of the second fixed magnet (14), and the other end of the spring (15) is connected to the second moving magnet (16), and the second moving magnet (16) can be attracted to and contact the second fixed magnet (14) through electromagnetic force.
6. A vacuum circuit breaker magnetic control mechanism according to claim 5, characterized in that: An inserting column (17) is arranged on the outer side of the second moving magnet (16), and the inserting column (17) can be inserted into a slot (11) provided on the fixing rod (10) to limit and fix the fixing rod (10).