Spring operating mechanism of circuit breaker
Through the use of energy storage methods and direct transmission methods in circuit breaker spring operation mechanisms, the problem of high energy consumption and rusty corrosion in existing technologies is solved, and low energy consumption and high reliability division bracket operations are realized.
Patent Information
- Application Number
- CN202420274785.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-05
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-02-05
AI Technical Summary
The existing circuit breaker spring actuator has high energy consumption when the switch is opened and closed, and the actuator is easily corroded when exposed, which affects the performance and reduces reliability.
The energy storage method is used to perform a low -power clog operation with low power. The number of parts is reduced by direct transmission. The operation mechanism is placed in a sealed mechanism box to avoid rust.
A low -energy split gates operation has been realized, the reliability of the organization is improved, the problem of corrosion is avoided, and the performance of the equipment is enhanced.
Smart Images
Figure CN222394745U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to circuit breakers, and in particular to a spring operating mechanism of a circuit breaker. Background Art
[0002] A circuit breaker is a mechanical switch device that can close, carry, and disconnect current under normal circuit conditions; carry a specified overcurrent within a specified time, and can close and disconnect current under abnormal circuit conditions (such as various short-circuit conditions). A spring operating mechanism is a commonly used operating mechanism for a circuit breaker. Its main components include a mechanism body and a secondary panel. Electrical components are arranged on the secondary panel. By properly optimizing the arrangement of the electrical components, functions such as remote and local control, opening and closing operations, etc. of the mechanism can be realized. In the actual operation of power switchgear, 70% of the faults are caused by mechanical transmission components, of which the faults caused by the operating mechanism account for the majority. Therefore, a spring operating mechanism for a circuit breaker is particularly needed.
[0003] However, the existing spring operating mechanism of the circuit breaker consumes a lot of energy when opening and closing the circuit breaker. The operating mechanism exposed to the outside is easily corroded during the transmission of the mechanism, which affects the performance of the operating mechanism and reduces the reliability of the mechanism. Utility Model Content
[0004] The purpose of the utility model is to provide a spring operating mechanism for a circuit breaker to solve the problem that the existing spring operating mechanism of the circuit breaker proposed in the above background technology requires high energy consumption when opening and closing the circuit breaker, and the operating mechanism exposed to the outside is easily corroded during mechanism transmission, thereby affecting the performance of the operating mechanism and reducing the reliability of the mechanism.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spring operating mechanism of a circuit breaker, comprising a support rod, a box body connected to one side of the surface of the support rod, a cover-type transformer installed on one side of the surface of the support rod, a separation and combination operating handle installed on one side of the surface of the box body, an energy storage operating handle installed on one side of the surface of the box body, a separation and combination mark connected to one side of the surface of the box body, an operating box connected to one side of the surface of the box body, a voltage transformer installed on one side of the surface of the box body, a column connected to one side of the surface of the box body, a vacuum arc chamber connected to the other end of the column, an upper outlet seat connected to the other end of the vacuum arc chamber, an insulating sleeve provided on one side of the surface of the vacuum arc chamber, a current transformer connected to one side of the surface of the vacuum arc chamber, and a lower outlet seat connected to one side of the surface of the current transformer.
[0006] Preferably, the voltage transformer is connected to the upper outlet seat, and three groups of columns are provided.
[0007] Preferably, the opening and closing operating handle is electrically connected to the vacuum interrupter, and the operating box is electrically connected to the vacuum interrupter.
[0008] Preferably, the cover-type mutual inductor is electrically connected to the vacuum interrupter, and the insulating sleeve is made of imported epoxy resin.
[0009] Preferably, the energy storage operating handle is electrically connected to the operating box, and the opening and closing mark is electrically connected to the vacuum interrupter.
[0010] Compared with the prior art, the utility model has the following beneficial effects: the spring operating mechanism of the circuit breaker uses a low-power energy storage method, has low opening and closing energy consumption, adopts a direct-acting transmission method for mechanism transmission, has a small number of parts and components, and has high reliability. The operating mechanism is placed in a sealed mechanism box, which solves the problem of rust on the operating mechanism and improves the reliability of the mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 This is a schematic diagram of the side view of the appearance structure of the utility model;
[0012] Figure 2 This is a schematic diagram of the structure of the support rod and the box body cooperating with each other in the utility model;
[0013] Figure 3 This is a schematic diagram of the structure of the cooperation between the box and the current transformer of the utility model.
[0014] In the figure, 1 is the support rod; 2 is the box; 3 is the cover-type transformer; 4 is the opening and closing operating handle; 5 is the energy storage operating handle; 6 is the opening and closing mark; 7 is the operating box; 8 is the voltage transformer; 9 is the column; 10 is the vacuum interrupter; 11 is the upper outlet seat; 12 is the insulating sleeve; 13 is the current transformer; 14 is the lower outlet seat. DETAILED DESCRIPTION
[0015] 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.
[0016] See also Figure 1-3The utility model provides a technical solution, a spring operating mechanism of a circuit breaker, comprising a support rod 1, a box body 2 is connected to one side of the surface of the support rod 1, a cover-type transformer 3 is installed on one side of the surface of the support rod 1, a separation and combination operating handle 4 is installed on one side of the surface of the box body 2, a storage operating handle 5 is installed on one side of the surface of the box body 2, a separation and combination mark 6 is connected to one side of the surface of the box body 2, an operating box 7 is connected to one side of the surface of the box body 2, a voltage transformer 8 is installed on one side of the surface of the box body 2, a column 9 is connected to one side of the surface of the box body 2, a vacuum interrupter 10 is connected to the other end of the column 9, an upper outlet seat 11 is connected to the other end of the vacuum interrupter 10, an insulating sleeve 12 is sleeved on one side of the surface of the vacuum interrupter 10, a current transformer 13 is connected to one side of the surface of the current transformer 13, and When the lower outlet seat 14 is in use, first pull the energy storage operating handle 5, and energy storage begins at this time. When the energy is fully stored, the energy storage operating handle 5 cannot store energy again. After the energy storage is completed, pull the manual opening and closing operating handle 4 to turn to the closing direction, so that the circuit breaker starts to close, and the energy storage mechanism releases energy to assist in closing. In the closed state, the energy storage operating handle 5 cannot be rotated. When opening is required, pull the opening and closing operating handle 4 to turn to the opening direction, so that the circuit breaker starts to open. When the current transformer 13 senses that the line current exceeds the set value, the overcurrent coil is driven, so that the circuit breaker starts to open. The energy storage method has low power and low energy consumption for opening and closing. The mechanism transmission adopts a direct-acting transmission method, with a small number of parts and high reliability. The operating mechanism is placed in a sealed mechanism box, which solves the problem of rust on the operating mechanism and improves the reliability of the mechanism.
[0017] Furthermore, the voltage transformer 8 is connected to the upper outlet seat 11, and three groups of columns 9 are provided. Through the setting of the voltage transformer 8, when in use, the voltage transformer 8 can convert the high voltage into a low voltage suitable for the application of secondary equipment according to a certain proportion, which is convenient for the standardization of secondary equipment. At the same time, the high voltage system can be electrically isolated from the low voltage system, thereby ensuring the safety of the staff and the secondary equipment.
[0018] Furthermore, the opening and closing operating handle 4 is electrically connected to the vacuum interrupter 10, and the operating box 7 is electrically connected to the vacuum interrupter 10. Through the setting of the opening and closing operating handle 4, when in use, pulling the opening and closing operating handle 4 can control the opening and closing of the circuit breaker, thereby manually controlling the opening and closing state of the circuit breaker.
[0019] Furthermore, the cover-type transformer 3 is electrically connected to the vacuum interrupter 10, and the insulating sleeve 12 is made of imported epoxy resin. Through the setting of the vacuum interrupter 10, when in use, the vacuum interrupter 10 can use the excellent insulation of the vacuum in the tube to quickly extinguish the arc and suppress the current after the medium and high voltage circuits are cut off from power, thereby avoiding accidents and unexpected events.
[0020] Furthermore, the energy storage operating handle 5 is electrically connected to the operating box 7, and the opening and closing mark 6 is electrically connected to the vacuum arc extinguishing chamber 10. Through the setting of the energy storage operating handle 5, when in use, energy can be stored by rotating the energy storage operating handle 5 to prepare for energy supply when closing the switch, thereby achieving the purpose of reducing energy consumption when opening and closing the switch.
[0021] Working principle: first pull the energy storage operating handle 5, and energy storage begins at this time. When the energy is fully stored, the energy storage operating handle 5 cannot store energy again. After the energy storage is completed, pull the manual opening and closing operating handle 4 to turn to the closing direction, so that the circuit breaker starts to close, and the energy storage mechanism releases energy to assist in closing. In the closed state, the energy storage operating handle 5 cannot be rotated. When opening is required, pull the opening and closing operating handle 4 to turn to the opening direction, so that the circuit breaker starts to open. When the current transformer 13 senses that the line current exceeds the set value, the overcurrent coil is driven, so that the circuit breaker starts to open. The energy storage method has low power and low energy consumption for opening and closing. The mechanism transmission adopts direct-acting transmission method, with a small number of parts and high reliability. The operating mechanism is placed in a sealed mechanism box, which solves the problem of rust on the operating mechanism and improves the reliability of the mechanism. When in use, the electric The voltage transformer 8 can convert high voltage into low voltage suitable for secondary equipment application in a certain proportion, which is convenient for standardization of secondary equipment. At the same time, the high voltage system can be electrically isolated from the low voltage system, thereby ensuring the safety of staff and secondary equipment. The vacuum arc extinguishing chamber 10 can use the excellent insulation of the vacuum in the tube to quickly extinguish the arc and suppress the current after the medium and high voltage circuits are cut off from the power supply, thereby avoiding accidents and unexpected events. The current transformer 13 can measure the current and convert it into a signal that can be used for monitoring or control systems, and convert the current of the high current line into a corresponding low current, which is convenient for accurate measurement and monitoring. By monitoring the output signal of the current transformer 13, abnormal current, short circuit or overload can be quickly detected, and the protection device can be triggered at the same time to protect electrical equipment and systems from damage or accidents.
[0022] Although 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. A spring operating mechanism for a circuit breaker, comprising a support rod (1), characterized in that: One side of the surface of the support rod (1) is connected to a box (2), one side of the surface of the support rod (1) is equipped with a cover-type transformer (3), one side of the surface of the box (2) is equipped with a separation and combination operating handle (4), one side of the surface of the box (2) is equipped with an energy storage operating handle (5), one side of the surface of the box (2) is connected to a separation and combination mark (6), one side of the surface of the box (2) is connected to an operating box (7), one side of the surface of the box (2) is equipped with a voltage transformer (8), one side of the surface of the box (2) is connected to a column (9), the other end of the column (9) is connected to a vacuum interrupter (10), the other end of the vacuum interrupter (10) is connected to an upper outlet seat (11), one side of the surface of the vacuum interrupter (10) is sleeved with an insulating sleeve (12), one side of the surface of the vacuum interrupter (10) is connected to a current transformer (13), and one side of the surface of the current transformer (13) is connected to a lower outlet seat (14).
2. The spring operating mechanism of a circuit breaker according to claim 1, characterized in that: The voltage transformer (8) is connected to the upper outlet seat (11), and three groups of the upright posts (9) are provided.
3. The spring operating mechanism of a circuit breaker according to claim 1, characterized in that: The opening and closing operating handle (4) is electrically connected to the vacuum interrupter (10), and the operating box (7) is electrically connected to the vacuum interrupter (10).
4. The spring operating mechanism of a circuit breaker according to claim 1, characterized in that: The cover-type mutual inductor (3) is electrically connected to the vacuum interrupter (10), and the insulating sleeve (12) is made of imported epoxy resin.
5. The spring operating mechanism of a circuit breaker according to claim 1, characterized in that: The energy storage operating handle (5) is electrically connected to the operating box (7), and the opening and closing mark (6) is electrically connected to the vacuum interrupter (10).