CN204390969U - A kind of SF6 circuit breaker frame-type spring operating mechanism - Google Patents

Abstract

A frame-type spring operating mechanism for SF6 circuit breaker, including a frame and a frame surface panel. Manual opening knob, manual closing knob and energy storage indicator light showing whether the spring energy storage is normal; the closing mechanism includes energy storage motor, closing spring, closing coil, closing limit spring, limit sleeve and the closing knob, the closing knob is connected to the closing semi-axis through the closing torsion spring, and a displacement sensor is installed on the closing semi-axis; the described opening mechanism includes an opening detent, an opening coil and The opening knob, the opening knob is connected with the opening half shaft through the opening torsion spring, and a displacement sensor is installed on the opening half shaft; the opening and closing sensors and the frame panel The buzzer is electrically connected. The frame spring mechanism has simple structure, reliable performance and convenient assembly.

Description

A frame type spring operating mechanism for SF6 circuit breaker

technical field

The utility model relates to a frame-type spring operating mechanism for an SF6 circuit breaker, which is suitable for high-voltage metal-enclosed gas-insulated switchgear.

Background technique

The spring operating mechanism is the core part of metal-enclosed gas-insulated switchgear. It is mainly used for opening and closing of metal-enclosed gas-insulated switchgear and energy storage operations. The spring operating mechanism is a mechanical operating mechanism with an energy storage spring as an energy storage element. The energy storage of the spring is completed by means of the energy storage shaft through the deceleration device, and is kept in the energy storage state through the locking system. When breaking, the lock releases, the energy storage spring releases energy, and the crank arm drives the switch to move through the mechanical transmission unit. The spring operating mechanism includes a manual spring operating part and an electric control spring operating part. The existing gas-insulated metal-enclosed switchgear and high-voltage SF6 circuit breaker all use spring operating mechanism, but the current domestic circuit breaker mechanism for gas-insulated metal-enclosed switch is multi-layer superposition structure and split structure, and the mechanism design is not enough Reasonable performance leads to unreliable performance, and such as gas-insulated metal-enclosed switchgear itself requires particularly high precision, assembly, commissioning, and opening operations are frequent, and it is easy to cause the mechanism to open or close in place during operation, and the opening and closing speed is also satisfactory. No request. The following shortcomings and disadvantages were also found during use: because the spring operating mechanism of this high-voltage SF6 circuit breaker can only be opened and closed by a manual lever handle, the required operating force is particularly large, and sometimes opening and closing If the gate is not in place, there are potential safety hazards; the system needs to be powered off during maintenance, which brings a lot of trouble to the maintenance work; and with the development of smart grids, the previous circuit breaker operating mechanism cannot realize remote operation and cannot meet the requirements of smart grids.

Contents of the invention

In order to overcome the above-mentioned defects of the prior art, the utility model provides a frame-type spring operating mechanism for SF6 circuit breakers, which is used to facilitate operation and maintenance, eliminate potential safety hazards, and adapt to the requirements of intelligent management of power grids.

In order to solve its technical problems, the technical solution adopted by the utility model is: the designed frame-type spring operating mechanism for SF6 circuit breaker, including the frame and the panel connected to the surface of the frame, and its characteristics are: a closing mechanism is provided in the frame, The opening mechanism, the energy storage mechanism and the opening and closing sensors are provided with a manual opening knob, a manual closing knob and an energy storage indicator light showing whether the spring energy storage is normal on the panel; the closing mechanism includes an energy storage motor, closing spring, closing coil, closing limit spring, limit sleeve and closing knob, the closing knob is connected to the closing half shaft through the closing torsion spring, and the closing sensor is installed on the closing half on the shaft; the opening mechanism includes an opening detent, an opening coil and an opening knob, and the opening knob is connected with the opening half shaft through an opening torsion spring, and the opening sensor is installed On the half shaft; the opening and closing sensors are electrically connected with a buzzer. The opening and closing sensors are displacement sensors.

When working, turn the manual closing knob to the left to release the closing detent, the energy storage shaft rotates under the action of the closing spring force, the rotating shaft is connected to the main shaft of the switch, and the closing indicator lights up when the circuit breaker is in the closing position. At this time, if the closing is not in place, the buzzer will sound, and the energy storage motor will continue to automatically store energy at the same time as the closing, and the opening coil will be energized; or turn the manual opening knob 5 to the left, the opening detent will be released, and the main shaft will open Under the action of the spring, the opening indicator 9 lights up when the opening transmission circuit breaker is in the opening position, and the buzzer sounds when the opening and closing are not in place during the opening and closing process; by using the existing auxiliary functional elements in the mechanism : Energy storage motor, opening and closing coil, realize remote operation to complete the function of intelligent grid.

Compared with the prior art, the utility model has the following characteristics and progress: because the frame-type spring operating mechanism used for gas-insulated metal-enclosed switchgear, its structure is an integral frame structure, and at the same time, electric energy storage and electric distribution are added. The combination of kinetic energy and auxiliary functional elements makes each functional unit arranged in a reasonable position on the frame. It does not need to be operated with a lever handle, and the opening and closing can be realized as long as the knob is easily rotated. It can also use low-power AC and DC motors for energy storage, and electric remote opening and closing, which can obtain higher opening and closing speeds. It can also realize rapid and automatic repeated opening and closing operations; when the opening and closing are not in place, it will automatically alarm to ensure safety. The spring operating mechanism designed in this way has a high degree of safety, reliability and stability, and is easy to operate; especially to realize remote operation, it can fully meet the needs of the smart grid.

Description of drawings

Fig. 1 is a front view of the utility model;

Fig. 2 is the utility model left view;

Fig. 3 is a structural schematic diagram of the closing position of the utility model;

Fig. 4 is a panel view of the utility model.

In the figure: 1. Energy storage motor, 2. Closing coil, 3. Opening coil, 4. Manual energy storage mechanism, 5. Manual opening knob, 6. Manual closing knob, 7. Energy storage indicator light, 8. Closing indicator light, 9. Opening indicator light, 10. Closing spring, 11. Closing limit spring, 12. Closing limit sleeve, 13. Opening and tripping detent, 14. Opening and closing sensor, 15, buzzer, 16, closing torsion spring, 17, closing half shaft, 18, opening torsion spring, 19, opening half shaft.

Detailed ways

Now in conjunction with the drawings and embodiments, the utility model is further described: see the accompanying drawings: the utility model adopts an integral frame structure, and the SF6 circuit breaker uses a frame-type spring operating mechanism, including a closing mechanism and an opening mechanism. The brake mechanism includes an energy storage motor 1, a closing spring 10, a closing coil 2, a closing limit spring 11, a closing limit sleeve 12, and a closing knob 6, which is passed through the closing knob. The spring 16 is connected with the closing semi-axis 17; the opening mechanism includes the opening detent 13, the opening coil 3, and the opening knob 5, and the opening knob passes through the opening torsion spring 18 and the opening Gate semi-shaft 19 is connected;

The opening and closing sensor 14 is electrically connected with the buzzer 15 on the mechanism, and is used to warn whether the opening, closing, and energy storage operations of the frame type circuit breaker are in place, which can greatly improve the safety performance of the mechanism; the manual opening knob 5. Manual closing knob 6, energy storage indicator light 7, closing indicator light 8, opening indicator light 9, buzzer 15 are set on the panel of the frame, the operation is very convenient, and the knob can be easily rotated to realize Opening and closing can not only obtain a higher opening and closing speed, but also realize fast and automatic repeated opening and closing operations; when working, use the energy storage motor 1 to store energy for the spring, or manually operate the energy storage mechanism 4 to store energy for the spring, The energy storage indicator 7 on the panel shows whether the energy storage is normal; turn the manual closing knob 6 to the left, the closing detent is released, the energy storage shaft rotates under the action of the closing spring force, the rotating shaft connects to the switch main shaft, and the circuit breaks When the switch is in the closing position, the closing indicator light 8 is on, and the energy storage motor 1 continues to automatically store energy when the switch is closed. Power on the opening coil 3, or turn the manual opening knob 5 to the left, the opening detent is released, and the main shaft is under the action of the opening spring, and the opening indicator light 9 lights up in the opening position through the opening transmission circuit breaker. Use the auxiliary function energy storage motor 1, closing coil 2, and opening coil 3 in the mechanism to realize remote operation to complete the intelligent grid function.

Claims (2)

1. A frame-type spring operating mechanism for SF6 circuit breaker, comprising a frame and a frame surface panel, characterized in that: a closing mechanism, an opening mechanism, an energy storage mechanism and an opening and closing sensor are arranged in the frame, and on the panel It is equipped with a manual opening knob, a manual closing knob and an energy storage indicator light showing whether the spring energy storage is normal; the closing mechanism includes an energy storage motor, a closing spring, a closing coil, a closing limit spring, a limit A bit sleeve and a closing knob, the closing knob is connected to the closing semi-shaft through the closing torsion spring, and the closing sensor is installed on the closing semi-shaft; the opening mechanism includes an opening detent, The opening coil and the opening knob, the opening knob is connected with the opening half shaft through the opening torsion spring, the opening sensor is installed on the opening half shaft, the opening and closing sensors are connected with a The buzzer is electrically connected. 2. The frame type spring operating mechanism for SF6 circuit breaker according to claim 1, characterized in that: the opening and closing sensors are displacement sensors.