Integrated capacitor electricity taking type magnetic control pole-mounted circuit breaker

Abstract

The utility model discloses an integrated capacitor electricity-taking type magnetic control pole-mounted circuit breaker, which comprises a circuit breaker body, three groups of equidistantly distributed magnetic control pole bodies are fixedly arranged at the top of the circuit breaker body, a fixed seat is welded and fixed at the bottom of the circuit breaker body, and the bottom of the fixed seat covers the surface of a mounting table. A side plate is installed on the front face of the circuit breaker body in a threaded connection mode, a shielding cover covers the surface of the circuit breaker body, a top cover is installed on the top of the shielding cover in a threaded connection mode, fixing bolts are installed on the shielding cover in a threaded connection mode, fixing pieces are welded to the two sides of the surface of the circuit breaker body, and threaded connection holes are formed in the fixing pieces. According to the integrated capacitor electricity-taking type magnetic control pole-mounted circuit breaker, the shielding cover covers the outer side of the circuit breaker body, so that electromagnetic shielding protection and anti-interference work of the circuit breaker body are realized; the electromagnetic pure iron has high magnetic conductivity, so that a stray magnetic field can be concentrated on the shielding case shell, and the interference of an external magnetic field is effectively shielded.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically an integrated capacitor-powered magnetically controlled pole-mounted circuit breaker. Background Technology

[0002] In high-voltage lines of power systems, the line voltage is typically several kilovolts or even higher. Capacitor-powered magnetically controlled pole-mounted circuit breakers utilize the principle of capacitive voltage division to obtain electrical energy. Generally, one or more capacitors are installed in the circuit of the circuit breaker, connected in parallel with the high-voltage line. Since the capacitive reactance of a capacitor is inversely proportional to the frequency, in AC power systems, the capacitor will exert a certain voltage division effect on the high-voltage AC current, extracting a portion of the electrical energy from the high-voltage line and converting the high voltage into a low voltage suitable for the internal electronic components and control circuits of the circuit breaker. This provides the necessary operating power for the magnetically controlled operating mechanism, control circuits, signal detection, and other parts of the circuit breaker. Power stability and management: The electrical energy obtained by the capacitor may experience voltage fluctuations. Therefore, the circuit breaker is usually equipped with a power management circuit, including voltage stabilization and filtering, to ensure a stable and reliable DC power supply for all components of the circuit breaker, guaranteeing its normal operation.

[0003] Magnetic pole-mounted circuit breakers rely on magnetic fields to control their opening and closing operations. Their internal magnetic control coils and magnets are highly sensitive to external magnetic fields. When a changing electromagnetic field exists in the surrounding environment, it may affect the magnetic field distribution and flux of the magnetic control components, thereby interfering with the circuit breaker's normal control signals and operating logic. Electromagnetic interference may cause the circuit breaker's control circuit to receive incorrect signals, leading to erroneous opening or closing. For example, during normal operation of a power system, erroneous opening can cause partial power outages, affecting users' normal electricity consumption and causing inconvenience to production and daily life. Erroneous closing may reconnect the faulty line to power, triggering secondary faults, expanding the fault area, and posing a threat to the safety of power equipment and personnel. Utility Model Content

[0004] The purpose of this invention is to provide an integrated capacitor-powered magnetically controlled pole-mounted circuit breaker to address the deficiencies mentioned in the background section.

[0005] To achieve the above objectives, an integrated capacitor-powered magnetically controlled pole-mounted circuit breaker is provided, comprising a circuit breaker body, three sets of equidistantly distributed magnetically controlled pole bodies fixedly installed on the top of the circuit breaker body, a fixing seat welded to the bottom of the circuit breaker body, the bottom of the fixing seat covering the surface of the mounting platform, a side plate screwed onto the front of the circuit breaker body, a shielding cover covering the surface of the circuit breaker body, a top cover screwed onto the top of the shielding cover, a fixing bolt screwed onto the shielding cover, fixing plates welded to both sides of the surface of the circuit breaker body, the fixing plates having screw holes, and the fixing bolts passing through the side wall of the shielding cover and screwed into the screw holes on the fixing plates.

[0006] Preferably, the circuit breaker body is equipped with mounting bases on both sides of its bottom, and the two sets of mounting bases cover the surface of the mounting platform. Two sets of studs are provided on both sides of the surface of the mounting platform.

[0007] Preferably, the fixing base has two sets of adjustment holes evenly distributed, both sets of adjustment holes are arranged in a straight line, and studs are inserted inside the two sets of adjustment holes. The studs pass through the adjustment holes and are screwed and fixed with nuts.

[0008] Preferably, the bottom of the magnetic control column body is U-shaped, and a heat dissipation space is provided at the bottom of the magnetic control column body, with heat dissipation fins provided in the heat dissipation space.

[0009] Preferably, the heat dissipation fins are arranged in an "S" shape, and the heat dissipation fins are evenly arranged in multiple groups, while the multiple groups of heat dissipation fins are fixedly distributed at the bottom of the magnetic control column body.

[0010] Preferably, the shielding cover is a rectangular structure made of electromagnetic pure iron material. The shielding cover includes a side cover, a top cover, sealing plates, fixing plates, and fixing bolts. Three sets of sealing plates are screwed onto the front of the side cover. The three sets of sealing plates have receiving holes in the middle, and the three sets of sealing plates cover the outer side of the three sets of magnetic control column bodies respectively.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model covers the circuit breaker body on the mounting platform, and the studs on the mounting platform pass through the adjustment holes and are screwed and fixed with nuts; the installation position of the circuit breaker body can be adjusted laterally according to the position of the studs inside the adjustment holes; this allows for more precise docking of the circuit breaker's inlet and outlet terminals with busbars, cables and other connecting components, ensuring tight and reliable connections, reducing problems such as increased contact resistance and overheating caused by connection deviations, and lowering the risk of failure;

[0013] 2. In this utility model, when the circuit breaker body is in actual operation, a heat dissipation space is provided at its bottom. The heat dissipation space is equipped with multiple sets of heat dissipation fins. The airflow impacts the heat dissipation fins, which can efficiently dissipate heat from the circuit breaker body. The presence of heat dissipation fins greatly increases the contact area with the air. The heat generated by the circuit breaker operation can be transferred to the fin surface more quickly and then carried away by the airflow, thereby accelerating the heat transfer speed and improving the heat dissipation efficiency.

[0014] 3. This utility model uses a shielding cover to cover the outside of the circuit breaker body, achieving electromagnetic shielding protection and anti-interference operation for the circuit breaker body. The electromagnetic pure iron has high magnetic permeability, which can concentrate stray magnetic fields onto the shielding cover shell, thereby effectively shielding external magnetic fields. In addition to high magnetic permeability, it also has high electrical conductivity, which can meet the requirements of electromagnetic shielding. The shielding cover can effectively block external electromagnetic interference signals from entering the magnetic control column circuit breaker, avoiding interference signals from affecting the control circuit, sensors and other components of the circuit breaker, ensuring accurate transmission of control signals of the circuit breaker, and preventing problems such as malfunction and delayed operation. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A bottom view;

[0017] Figure 3 for Figure 1 Top view;

[0018] Figure 4 for Figure 1 Rear view;

[0019] Figure 5 This is an isometric view of the device;

[0020] Figure 6 for Figure 5 A bottom view.

[0021] The following are the labels in the diagram: 1. Circuit breaker body; 2. Magnetically controlled column body; 3. Mounting base; 4. Adjustment hole; 5. Stud; 6. Nut; 7. Mounting platform; 8. Side plate; 9. Heat dissipation fins; 10. Heat dissipation space; 11. Shielding cover; 111. Side cover; 112. Top cover; 113. Sealing plate; 114. Fixing plate; 115. Fixing bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-6This utility model provides an integrated capacitor-powered magnetic control pole-mounted circuit breaker, including a circuit breaker body 1. Three sets of equidistantly distributed magnetic control pole bodies 2 are fixedly installed on the top of the circuit breaker body 1. A fixing seat 3 is welded and fixed to the bottom of the circuit breaker body 1. The bottom of the fixing seat 3 covers the surface of the mounting platform 7. A side plate 8 is screwed onto the front of the circuit breaker body 1. A shielding cover 11 covers the surface of the circuit breaker body 1. A top cover 112 is screwed onto the top of the shielding cover 11. A fixing bolt 115 is screwed onto the shielding cover 11. Fixing plates 114 are welded to both sides of the surface of the circuit breaker body 1. The fixing plates 114 have screw holes. The fixing bolts 115 pass through the side wall of the shielding cover 11 and are screwed into the screw holes on the fixing plates 114.

[0024] Working Principle: During use: The circuit breaker body 1 is placed on the mounting platform 7. The studs 5 on the mounting platform 7 pass through the adjustment holes 4 and are screwed into the nuts 6 for fixation. Both sets of adjustment holes 4 are in a straight line shape. During installation, the position of the studs 5 inside the adjustment holes 4 can be adjusted to allow for lateral adjustment of the installation position of the circuit breaker body 1. This ensures more precise connection between the circuit breaker's input and output terminals and busbars, cables, and other connecting components, guaranteeing a tight and reliable connection. This reduces problems such as increased contact resistance and overheating caused by connection deviations, thus lowering the risk of failure. For magnetically controlled circuit breakers with multiple components, such as the operating mechanism and the arc-extinguishing chamber, fine-tuning left and right allows each component to be in its optimal relative position. This design ensures smoother mechanism operation, improving the accuracy and reliability of opening and closing. In actual installation, construction errors may exist in the building structure; these errors can be compensated for through fine-tuning, allowing the circuit breaker to be installed within a limited space, avoiding installation difficulties or non-standard installations due to space constraints. During operation, the circuit breaker body 1 has a heat dissipation space 10 at its bottom, with multiple sets of heat dissipation fins 9 inside. Airflow impacts the heat dissipation fins 9, efficiently cooling the circuit breaker body 1. The presence of the heat dissipation fins 9 significantly increases the contact area with air; according to the principle of heat transfer, the larger the contact area, the faster the heat dissipates. The heat generated by the circuit breaker operation can be transferred to the air more quickly. The heat is carried away by airflow from the fin surface, effectively handling situations where a large amount of heat is generated, such as in high-current circuit breakers. The airflow impacts the heat dissipation fins 9, forming forced convection cooling. Compared to natural convection, forced convection can remove heat from the surface of the heat dissipation fins 9 more quickly, maintaining a higher temperature difference between the surface of the heat dissipation fins 9 and the surrounding air, thereby accelerating heat transfer and improving heat dissipation efficiency. The circuit breaker body 1 is covered by a shielding cover 11, a rectangular structure made of electromagnetic pure iron, which provides electromagnetic shielding and anti-interference protection for the circuit breaker body 1. Electromagnetic pure iron has high permeability, which concentrates stray magnetic fields onto the shielding cover, effectively shielding the circuit breaker body. The external magnetic field; in addition to high magnetic permeability, it also has high electrical conductivity, which can meet the requirements of electromagnetic shielding; the shielding cover 11 can effectively block external electromagnetic interference signals from entering the magnetically controlled column circuit breaker, avoiding interference signals from affecting the control circuit, sensors and other components of the circuit breaker, ensuring accurate transmission of the control signal of the circuit breaker, preventing malfunctions, delays and other problems, and ensuring its normal and stable operation; when the magnetically controlled column circuit breaker is working, its internal electromagnetic components will also generate electromagnetic radiation, which may interfere with itself or other electronic equipment in the surrounding area; the shielding cover 11 can limit the electromagnetic radiation generated inside to a certain range, reduce its interference with surrounding equipment, and improve the operational stability of other equipment in the entire power system.

[0025] As a preferred embodiment, the circuit breaker body 1 is equipped with mounting bases 3 on both sides of its bottom, and the two sets of mounting bases 3 cover the surface of the mounting platform 7. Two sets of studs 5 are provided on both sides of the surface of the mounting platform 7.

[0026] As a preferred embodiment, the fixing base 3 is provided with two sets of adjustment holes 4 evenly. Both sets of adjustment holes 4 are arranged in a straight line. A stud 5 is inserted inside each set of adjustment holes 4. The stud 5 passes through the adjustment hole 4 and is screwed and fixed with a nut 6.

[0027] As a preferred implementation, the bottom of the magnetic control column body 2 is U-shaped, and a heat dissipation space 10 is provided at the bottom of the magnetic control column body 2. The heat dissipation space 10 is provided with heat dissipation fins 9.

[0028] As a preferred embodiment, the heat dissipation fins 9 are arranged in an "S" shape, and the heat dissipation fins 9 are evenly arranged in multiple groups. At the same time, the multiple groups of heat dissipation fins 9 are fixedly distributed at the bottom of the magnetic control column body 2.

[0029] In a preferred embodiment, the shielding cover 11 is a rectangular structure made of electromagnetic pure iron. The shielding cover 11 includes a side cover 111, a top cover 112, a sealing plate 113, a fixing plate 114, and a fixing bolt 115. Three sets of sealing plates 113 are screwed onto the front of the side cover 111. The three sets of sealing plates 113 have receiving holes in the middle, and the three sets of sealing plates 113 respectively cover the outer side of the three sets of magnetic control column bodies 2.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated capacitor-powered magnetically controlled pole-mounted circuit breaker, comprising a circuit breaker body (1), characterized in that: The top of the circuit breaker body (1) is fixedly provided with three sets of equidistantly distributed magnetic control column bodies (2). The bottom of the circuit breaker body (1) is welded and fixed with a fixing seat (3). The bottom of the fixing seat (3) covers the surface of the mounting platform (7). The front of the circuit breaker body (1) is screwed with a side plate (8). The surface of the circuit breaker body (1) is covered with a shield (11). The top of the shield (11) is screwed with a top cover (112). The shield (11) is screwed with a fixing bolt (115). Fixing plates (114) are welded on both sides of the surface of the circuit breaker body (1). The fixing plates (114) have screw holes. The fixing bolts (115) pass through the side wall of the shield (11) and are screwed into the screw holes on the fixing plates (114).

2. The integrated capacitor-powered magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) has two sets of fixing seats (3) installed on both sides of the bottom. The two sets of fixing seats (3) cover the surface of the mounting platform (7). Two sets of studs (5) are provided on both sides of the surface of the mounting platform (7).

3. The integrated capacitor-powered magnetically controlled pole-mounted circuit breaker according to claim 2, characterized in that: The fixed base (3) is provided with two sets of adjustment holes (4) evenly. Both sets of adjustment holes (4) are set in a straight line. A stud (5) is inserted inside the two sets of adjustment holes (4). The stud (5) passes through the adjustment hole (4) and is screwed and fixed with the nut (6).

4. The integrated capacitor-powered magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The bottom of the magnetic control column body (2) is U-shaped, and a heat dissipation space (10) is provided at the bottom of the magnetic control column body (2), and heat dissipation fins (9) are provided in the heat dissipation space (10).

5. The integrated capacitor-powered magnetically controlled pole-mounted circuit breaker according to claim 4, characterized in that: The heat dissipation fins (9) are arranged in an "S" shape, and the heat dissipation fins (9) are evenly arranged in multiple groups. At the same time, the multiple groups of heat dissipation fins (9) are fixedly distributed at the bottom of the magnetic control column body (2).

6. The integrated capacitor-powered magnetically controlled pole-mounted circuit breaker according to claim 1, characterized in that: The shield (11) is a rectangular structure made of electromagnetic pure iron. The shield (11) includes a side cover (111), a top cover (112), a sealing plate (113), a fixing plate (114), and a fixing bolt (115). Three sets of sealing plates (113) are screwed on the front of the side cover (111). The three sets of sealing plates (113) have a receiving hole in the middle. The three sets of sealing plates (113) cover the outside of the three sets of magnetic control column bodies (2).

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