Circuit breaker modules and pole-mounted circuit breakers
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-08-14
AI Technical Summary
[0003]现有的一二次融合断路设备中，通常仅对位于出线端的线缆进行电流采样，也仅从出线端的线缆获取分合闸驱动机构所需的电能，因此断路设备检测精度低，且容易发生损坏
[0014]本申请实施例至少包括以下有益效果：通过同时设置进线采样电容和出线采样电容，进线采样电容用于对入线端的电流进行采样，出线采样电容用于对出线端的电流进行采样，当进线采样电容所在电路的电流出现异常时，说明入线端的电流存在问题，或者，当出线采样电容所在电路的电流出现异常时，说明出线端的电流存在问题，因此，闸控模块通过进线采样电容和出线采样电容采集得到的电流进行判别，当进线采样电容或出线采样电容所在任一电路出现异常电流时，闸控模块能够进行监测并控制分闸，从而及时避免线路上的异常电流对用电设备造成影响；另外，通过同时设置进线取能电容和出线取能电容，进线取能电容用于从入线端获取电能，出线取能电容用于从出线端获取电能，进线取能电容和出线取能电容采集得到的电能用于为闸控模块供电，闸控模块的工作功率固定，进线取能电容和出线取能电容所在电路的输出的功率均可控制为闸控模块的工作功率的一半，从而减少了进线取能电容和出线取能电容所在电路的负担，当进线取能电容所在电路或出线取能电容所在电路中其中一条电路出现故障时，取电模块仍能为闸控模块提供电能，从而保障了取电模块和闸控模块的稳定性。
Smart Images
Figure CN224637101U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker safety equipment technology, and in particular to a circuit breaker module and a pole-mounted circuit breaker. Background Technology
[0002] Vacuum circuit breakers are commonly used power distribution equipment on overhead lines, primarily used for breaking and closing load currents, overload currents, and short-circuit currents in power lines. They feature miniaturized and fully enclosed structures. Typically, they consist of primary components such as three-phase solid-sealed poles, a mechanism box, and a transmission mechanism, as well as secondary devices such as voltage sensors, current sensors, power extraction modules, or high-speed fault transient waveform recorders. Equipped with an FTU (Flush Turner Unit) for automated control, these devices offer advantages such as compact structure, comprehensive functions, high reliability, convenient maintenance, high level of intelligence, and energy efficiency.
[0003] In existing integrated primary and secondary circuit breaker devices, current is typically sampled only from the cables at the outgoing end, and the electrical energy required for the opening and closing drive mechanism is obtained only from the cables at the outgoing end. Therefore, the detection accuracy of the circuit breaker device is low, and it is prone to damage. Utility Model Content
[0004] The following is an overview of the subject matter described in detail herein, and this overview is not intended to limit the scope of the claims.
[0005] This invention proposes a circuit breaker module and a pole-mounted circuit breaker that can simultaneously reduce the operating power of the sampling capacitor and the energy extraction capacitor at both the input and output ends, thereby improving their service life.
[0006] To achieve the above objectives, the first aspect of this utility model provides a circuit breaker module, comprising: a pole, including an insulating shell and a vacuum interrupter, the vacuum interrupter being disposed within the insulating shell, one end of the vacuum interrupter being provided with an input terminal; a gate control module, including a drive assembly, an operating lever, and a flexible contact head, one end of the operating lever being connected to the drive assembly, the other end of the operating lever being connected to the drive end of the flexible contact head, the first end of the flexible contact head being connected to the other end of the vacuum interrupter, and the flexible contact head being... The second end of the contact is connected to the outgoing terminal on the insulating housing; the power extraction module, the gate control module, the incoming terminal and the outgoing terminal are respectively electrically connected to the power extraction module, the power extraction module includes an incoming sampling capacitor, an incoming energy extraction capacitor, an outgoing sampling capacitor and an outgoing energy extraction capacitor, the incoming sampling capacitor is used to sample the current at the incoming terminal, the incoming energy extraction capacitor is used to obtain electrical energy from the incoming terminal, the outgoing sampling capacitor is used to sample the current at the outgoing terminal, and the incoming energy extraction capacitor is used to obtain electrical energy from the outgoing terminal.
[0007] In some embodiments, the incoming line sampling capacitor, the incoming line power extraction capacitor, the outgoing line sampling capacitor, and the outgoing line power extraction capacitor are sealed on the insulating housing by insulating material.
[0008] In some embodiments, the operating lever is insulated.
[0009] In some embodiments, a conductive rod is provided through the inside and outside of the side of the pole post, one end of the conductive rod is connected to the flexible contact head located inside the pole post, and the other end of the conductive rod is connected to the lead-out end located outside the pole post.
[0010] In some embodiments, a current sensing module is further included, which is electrically connected to the gate control module. The current sensing module includes a current transformer, which is disposed at the outgoing terminal and passes through the middle of the current transformer.
[0011] In some embodiments, the current transformer is encapsulated on the outgoing terminal with silicone.
[0012] To achieve the above objectives, the second aspect of this utility model also proposes a pole-mounted circuit breaker, which is connected to a three-phase circuit. The pole-mounted circuit breaker includes a plurality of circuit breaking modules as described in the first aspect, and each circuit breaking module performs opening and closing of one of the lines in the three-phase circuit.
[0013] In some embodiments, the circuit breaker module includes a current sensing module, and the current sensing module further includes a zero-sequence current transformer, which is disposed at the outgoing terminal and passes through the middle of the zero-sequence current transformer.
[0014] The embodiments of this application include at least the following beneficial effects: By simultaneously setting an incoming line sampling capacitor and an outgoing line sampling capacitor, the incoming line sampling capacitor is used to sample the current at the incoming end, and the outgoing line sampling capacitor is used to sample the current at the outgoing end. When the current in the circuit where the incoming line sampling capacitor is located is abnormal, it indicates that there is a problem with the current at the incoming end; or, when the current in the circuit where the outgoing line sampling capacitor is located is abnormal, it indicates that there is a problem with the current at the outgoing end. Therefore, the gate control module makes a judgment based on the current collected by the incoming line sampling capacitor and the outgoing line sampling capacitor. When an abnormal current occurs in either the circuit where the incoming line sampling capacitor or the outgoing line sampling capacitor is located, the gate control module can monitor and control the tripping, thereby timely preventing abnormal current on the line from affecting the electrical equipment. This avoids potential impacts. Furthermore, by simultaneously setting up input and output power capacitors, the input capacitor obtains power from the input terminal, and the output capacitor obtains power from the output terminal. The power collected by both capacitors powers the gate control module. The gate control module has a fixed operating power, and the output power of the circuits containing both the input and output power capacitors can be controlled to half the operating power of the gate control module. This reduces the burden on the circuits containing the input and output power capacitors. When either the input or output power capacitor circuit fails, the power supply module can still provide power to the gate control module, thus ensuring the stability of both the power supply module and the gate control module.
[0015] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description
[0016] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.
[0017] Figure 1 A schematic diagram of an optional structure of the circuit breaker module provided in this embodiment of the present utility model; Figure 2 A schematic diagram of an optional structure of the reference top provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of an optional structure of the pole-mounted circuit breaker provided in an embodiment of the present utility model. Detailed Implementation
[0018] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0022] Currently, existing integrated primary and secondary circuit breaker devices typically only sample the current of the cables at the outgoing end and obtain the electrical energy required for the opening and closing drive mechanism from the cables at the outgoing end. As a result, the detection accuracy of the circuit breaker device is low and it is prone to damage.
[0023] To address the problems of low detection accuracy and easy damage to circuit breaking equipment, this utility model provides a circuit breaking module and a pole-mounted circuit breaker. The circuit breaking module includes: a pole, comprising an insulating shell and a vacuum interrupter, the vacuum interrupter being disposed within the insulating shell, with an input terminal at one end of the vacuum interrupter; a gate control module, comprising a drive assembly, an operating lever, and a flexible contact head, one end of the operating lever being connected to the drive assembly, the other end of the operating lever being connected to the drive end of the flexible contact head, the first end of the flexible contact head being connected to the other end of the vacuum interrupter, and the second end of the flexible contact head being connected to the output terminal on the insulating shell; power supply. The module, including the gate control module, the input terminal, and the output terminal, is electrically connected to the power extraction module. The power extraction module includes an input sampling capacitor, an input energy extraction capacitor, an output sampling capacitor, and an output energy extraction capacitor. The input sampling capacitor samples the current at the input terminal, and the input energy extraction capacitor extracts electrical energy from the input terminal. The output sampling capacitor samples the current at the output terminal, and the input energy extraction capacitor extracts electrical energy from the output terminal. According to the solution provided in this embodiment, by simultaneously setting the input sampling capacitor and the output sampling capacitor, the input sampling capacitor samples the current at the input terminal, and the output sampling capacitor samples the current at the output terminal. Sampling is used to identify potential problems. An abnormal current in the circuit containing the incoming line sampling capacitor indicates a problem with the incoming current, or vice versa. Therefore, the gate control module uses the current samples from both the incoming and outgoing line sampling capacitors for identification. When an abnormal current occurs in either circuit, the gate control module monitors and controls the circuit breaker to trip, thus preventing the abnormal current from affecting electrical equipment. Furthermore, by simultaneously setting both incoming and outgoing line energy extraction capacitors, the incoming line energy extraction capacitor is used for... The power supply module obtains power from the input terminal and the output terminal. The power collected by the input and output terminals is used to power the gate control module. The operating power of the gate control module is fixed. The output power of the circuits containing the input and output terminals can be controlled to half of the operating power of the gate control module, thereby reducing the burden on the circuits containing the input and output terminals. When one of the circuits containing the input or output terminals fails, the power supply module can still provide power to the gate control module, thus ensuring the stability of the power supply module and the gate control module.
[0024] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0025] Reference Figures 1 to 2 This utility model embodiment provides a circuit breaker module, including: The pole post 100 includes an insulating housing 110 and a vacuum interrupter 120. The vacuum interrupter 120 is disposed inside the insulating housing 110, and one end of the vacuum interrupter 120 is provided with an inlet terminal 130. The gate control module 200 includes a drive assembly 210, an operating lever 220, and a flexible contact head 230. One end of the operating lever 220 is connected to the drive assembly 210, and the other end of the operating lever 220 is connected to the drive end of the flexible contact head 230. The first end of the flexible contact head 230 is connected to the other end of the vacuum interrupter 120, and the second end of the flexible contact head 230 is connected to the outgoing terminal 240 on the insulating housing 110. The power extraction module 300, the gate control module 200, the input terminal 130 and the output terminal 240 are electrically connected to the power extraction module 300. The power extraction module 300 includes an input sampling capacitor 310, an input energy extraction capacitor 320, an output sampling capacitor 330 and an output energy extraction capacitor 340. The input sampling capacitor 310 is used to sample the current at the input terminal 130, the input energy extraction capacitor 320 is used to obtain electrical energy from the input terminal 130, the output sampling capacitor 330 is used to sample the current at the output terminal 240, and the input energy extraction capacitor 320 is used to obtain electrical energy from the output terminal 240.
[0026] Sampling refers to the process of measuring parameters such as current or voltage flowing through a circuit breaker module. In power systems, sampling is used to obtain data on the operating status of line circuits, which can be used for monitoring, protection, and control.
[0027] One side of the input sampling capacitor 310 and the input power extraction capacitor 320 are electrically connected to the input terminal 130, and one side of the output sampling capacitor 330 and the output power extraction capacitor 340 are electrically connected to the output terminal 240. The other side of the input sampling capacitor 310, the input power extraction capacitor 320, the output sampling capacitor 330, and the output power extraction capacitor 340 are grounded through their respective corresponding resistors. The power extraction module 300 also includes multiple transformers and multiple rectifiers. One side of each transformer is connected to both ends of the resistors connected to the corresponding input sampling capacitor 310, the input power extraction capacitor 320, the output sampling capacitor 330, and the output power extraction capacitor 340. The other side of the transformer is connected to the corresponding rectifier. The current output by the rectifiers corresponding to the output sampling capacitor 330 and the input sampling capacitor 310 is used for detection by the gate control module 200, and the current of the rectifiers corresponding to the input power extraction capacitor 320 and the output power extraction capacitor 340 is used to provide working power to the gate control module 200.
[0028] Understandably, by simultaneously setting the incoming sampling capacitor 310 and the outgoing sampling capacitor 330, the incoming sampling capacitor 310 samples the current at the incoming terminal 130, and the outgoing sampling capacitor 330 samples the current at the outgoing terminal 240. When the current in the circuit where the incoming sampling capacitor 310 is located is abnormal, it indicates a problem with the current at the incoming terminal 130; conversely, when the current in the circuit where the outgoing sampling capacitor 330 is located is abnormal, it indicates a problem with the current at the outgoing terminal 240. Therefore, the gate control module 200 uses the currents collected by the incoming and outgoing sampling capacitors 310 and 330 to make a judgment. When an abnormal current occurs in either the circuit where the incoming or outgoing sampling capacitors 310 and 330 are located, the gate control module 200 can monitor and control the tripping of the circuit breaker, thereby promptly preventing abnormal currents on the line from affecting electrical equipment. Furthermore, by simultaneously... An input power extraction capacitor 320 and an output power extraction capacitor 340 are configured. The input power extraction capacitor 320 is used to obtain power from the input terminal 130, and the output power extraction capacitor 340 is used to obtain power from the output terminal 240. The power collected by the input power extraction capacitor 320 and the output power extraction capacitor 340 is used to power the gate control module 200. The operating power of the gate control module 200 is fixed. The output power of the circuits containing the input power extraction capacitor 320 and the output power extraction capacitor 340 can be controlled to half of the operating power of the gate control module 200, thereby reducing the burden on the circuits containing the input power extraction capacitor 320 and the output power extraction capacitor 340. When one of the circuits containing the input power extraction capacitor 320 or the output power extraction capacitor 340 fails, the power extraction module 300 can still provide power to the gate control module 200, thereby ensuring the stability of the power extraction module 300 and the gate control module 200.
[0029] The input sampling capacitor 310, the input power extraction capacitor 320, the output sampling capacitor 330, and the output power extraction capacitor 340 are fixed to the insulating housing 110 by insulating material.
[0030] Additionally, refer to again Figure 1 As shown, in some embodiments of this utility model, a conductive rod 250 is provided through the inside and outside of the side of the pole post 100. One end of the conductive rod 250 is connected to a flexible contact head 230 located inside the pole post 100, and the other end of the conductive rod 250 is connected to the wire outlet 240 located outside the pole post 100.
[0031] Understandably, by setting the outgoing conductive rod 250 on the pole 100, the outgoing conductive rod 250 is used inside the insulating housing 110 to contact the flexible contact head 230, thereby increasing the contact area with the flexible contact head 230 and improving the contact stability with the flexible contact head 230. The outgoing conductive rod 250 extends outward through the insulating housing 110 as the outgoing end 240 to connect with the lower cable. The cross-sectional area of the outgoing conductive rod 250 is larger than the conductive area of a conventional cable. Therefore, the outgoing conductive rod 250 can provide lower resistance than a conventional cable, reducing heat generation during opening and closing operations and ensuring electrical safety. The outgoing conductive rod 250 also provides sufficient rigidity to prevent itself from breaking.
[0032] Additionally, refer to Figure 1 As shown, in some embodiments of this utility model, the circuit breaker module further includes a current sensing module 400, which is electrically connected to the gate control module 200. The current sensing module 400 includes a current transformer 410, which is disposed at the output terminal 240 and passes through the middle of the current transformer 410.
[0033] The current transformer 410 is electrically connected to the gate control module 200. The current transformer 410 is used to detect the current change at the output terminal 240. When the current data through the current transformer 410 is greater than the preset rated current, it indicates that the circuit breaker module is overloaded. At this time, the gate control module 200 controls the flexible contact head 230 to retract downward through the drive component 210, thereby controlling the circuit breaker module to disconnect and ensuring cable safety.
[0034] In one specific embodiment, the current transformer 410 is encapsulated with silicone on the lead conductor 250, which serves as the lead terminal 240. The silicone encapsulation provides electrical insulation, preventing the high-voltage lead conductor 250 from puncturing the casing of the current transformer 410, thereby improving the safety and stability of the current transformer 410. Furthermore, the silicone encapsulation can protect the current transformer 410 from external environmental corrosion and damage, preventing moisture, dust, etc., from entering the interior of the current transformer 410, thus improving the service life of the circuit breaker module.
[0035] Additionally, refer to Figure 3 As shown, this utility model also provides a pole-mounted circuit breaker 500, which is connected to a three-phase circuit. The pole-mounted circuit breaker 500 includes multiple circuit breaking modules as described in the above embodiments, and each circuit breaking module performs opening and closing of one of the lines in the three-phase circuit.
[0036] The circuit breaker module includes a current sensing module 400, which also includes a zero-sequence current transformer 420. The zero-sequence current transformer 420 is located at the output terminal 240, which passes through the middle of the zero-sequence current transformer 420.
[0037] The zero-sequence current transformer 420 is mainly used to detect whether the three-phase indicated values in a three-phase circuit are within the allowable range, and can determine whether overload operation or cable fault has occurred. If the three-phase current is unbalanced or the current of a certain phase is abnormal, it is determined that a cable fault has occurred. At this time, each circuit breaker module will trip through its own gate control module 200.
[0038] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A circuit breaking module, characterized by, include: The pole includes an insulating shell and a vacuum interrupter, wherein the vacuum interrupter is disposed inside the insulating shell and one end of the vacuum interrupter is provided with an input terminal; The gate control module includes a drive assembly, an operating lever, and a flexible contact head. One end of the operating lever is connected to the drive assembly, and the other end of the operating lever is connected to the drive end of the flexible contact head. The first end of the flexible contact head is connected to the other end of the vacuum interrupter, and the second end of the flexible contact head is connected to the outgoing terminal on the insulating housing. A power-gathering module is provided, wherein the gate control module, the input terminal, and the output terminal are electrically connected to the power-gathering module. The power-gathering module includes an input sampling capacitor, an input energy-gathering capacitor, an output sampling capacitor, and an output energy-gathering capacitor. The input sampling capacitor is used to sample the current at the input terminal, the input energy-gathering capacitor is used to obtain electrical energy from the input terminal, the output sampling capacitor is used to sample the current at the output terminal, and the input energy-gathering capacitor is used to obtain electrical energy from the output terminal.
2. The circuit breaking module of claim 1, wherein, The input sampling capacitor, the input power extraction capacitor, the output sampling capacitor, and the output power extraction capacitor are sealed on the insulating housing by insulating material.
3. The circuit breaking module of claim 1, wherein, The operating lever is insulated.
4. The circuit breaking module of claim 1, wherein, A conductive rod is provided through the inside and outside of the side of the pole post. One end of the conductive rod is connected to the flexible contact head located inside the pole post, and the other end of the conductive rod is connected to the outgoing end located outside the pole post.
5. The circuit breaking module of claim 1, wherein, It also includes a current sensing module, which is electrically connected to the gate control module. The current sensing module includes a current transformer, which is disposed at the outgoing terminal and passes through the middle of the current transformer.
6. The circuit breaking module of claim 5, wherein, The current transformer is encapsulated on the outgoing terminal with silicone.
7. A pole-mounted circuit breaker, characterized by The pole-mounted circuit breaker is connected to the three-phase circuit, and the pole-mounted circuit breaker includes multiple circuit breaking modules as described in any one of claims 1 to 6, each of the circuit breaking modules respectively opening and closing one of the lines in the three-phase circuit.
8. The pole-mounted circuit breaker of claim 7, wherein, The circuit breaker module includes a current sensing module, and the current sensing module further includes a zero-sequence current transformer. The zero-sequence current transformer is disposed at the outgoing terminal, and the outgoing terminal passes through the middle of the zero-sequence current transformer.