Anti-condensation pole-mounted circuit breaker

Abstract

The utility model belongs to the technical field of circuit breakers, and particularly relates to an anti-condensation pole-mounted circuit breaker, which comprises a circuit breaker body, a mechanism box and an inner box, a separation cavity is arranged between the mechanism box and the inner box, the outer wall of the inner box is provided with a mounting groove, a coiled accommodating groove is arranged in the mounting groove, a heating wire is wound in the accommodating groove, and the heating wire is arranged in the inner wall of the inner box. A cover plate for isolating the heating wire is fixedly assembled in the mounting groove through screws, a controller and a temperature sensor which are in data connection through a wire are fixedly arranged on the mechanism box, a temperature and humidity sensor for detecting the temperature in the inner box is fixedly arranged on the inner wall of the inner box, and the temperature and humidity sensor is in data connection with the controller through a wire. Through the structural design, the heating wire is intelligently regulated and controlled to work, the condensation phenomenon caused by temperature and humidity changes of the inner box is effectively prevented, the reliability and stability of overall operation of the equipment are remarkably improved, the equipment shutdown maintenance time caused by condensation is shortened, and the continuity of power supply is improved.

Description

Technical Field

[0001] This utility model belongs to the field of circuit breaker technology, specifically an anti-condensation pole-mounted circuit breaker. Background Technology

[0002] Pole-mounted circuit breakers are important electrical devices installed on utility poles to automatically disconnect circuits during power failures, protecting equipment and personnel. They are widely used in power grid interconnection, sectionalizing, and branch lines to improve power supply reliability. Their installation must comply with regulations, their operation is managed by the dispatch center, and they require regular maintenance and inspection.

[0003] Existing pole-mounted circuit breakers mainly consist of a vacuum interrupter, a mechanism box, a current transformer, and a disconnecting switch. Their working principle is as follows: when the circuit needs to be disconnected, the vacuum interrupter extinguishes the arc, while the current transformer monitors the current and voltage, and the disconnecting switch provides safety isolation. For vacuum circuit breakers, the arc is quickly extinguished in the vacuum. These components work together to ensure that the circuit is disconnected safely and reliably.

[0004] The existing pole-mounted circuit breakers have the following drawbacks: when operating in coastal or high-altitude areas with large temperature differences between day and night, condensation easily forms on the inner wall of the mechanism box of the pole-mounted vacuum circuit breaker, which leads to a decrease in the reliability of the equipment operation and is prone to failure. Therefore, a condensation-proof pole-mounted circuit breaker is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing pole-mounted circuit breakers and solve the problem that condensation easily forms on the inner wall of the mechanism box of pole-mounted vacuum circuit breakers when operating in coastal or plateau areas with large diurnal temperature differences, leading to decreased equipment reliability and easy failure, a condensation-proof pole-mounted circuit breaker is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The pole-mounted circuit breaker for preventing condensation according to this utility model includes a circuit breaker body and a mechanism box. An inner box for accommodating the circuit breaker operating mechanism and related electrical components is fixedly installed in the mechanism box by a fixing frame. There is a cavity between the mechanism box and the inner box. The outer wall of the inner box is provided with mounting grooves. A coiled receiving groove is provided in the mounting groove. A heating wire is coiled in the receiving groove. A cover plate is fixedly installed in the mounting groove to isolate the heating wire by screws. A controller and a temperature sensor are fixedly installed on the mechanism box and connected to it by wires. A temperature and humidity sensor for detecting the internal temperature is fixedly installed on the inner wall of the inner box and connected to the controller by wires.

[0007] Preferably, a solar panel is fixedly installed on the outer wall of the mechanism box, and a battery pack for storing the electrical energy converted by the solar panel is fixedly installed on one side of the cavity, and the two are electrically connected by wires.

[0008] Preferably, an air inlet is provided on one side of the mechanism box, and an air outlet is provided at the bottom of the mechanism box. An exhaust fan is fixedly installed at the air outlet, and a humidity sensor that is connected to the controller via a wire is fixedly installed on the inner wall of the mechanism box inside the cavity.

[0009] Preferably, a rainproof baffle is fixedly installed on the outer wall of the mechanism box at the air inlet position.

[0010] Preferably, the inner wall of the air inlet is an inverted conical bevel, and the lowest point of the inverted conical bevel is located outside the mechanism box.

[0011] Preferably, the cover plate has built-in thermal insulation material.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a pole-mounted circuit breaker with anti-condensation performance, which is excellent in anti-condensation performance. It uses temperature and humidity sensors to accurately monitor the internal environment and uses a controller to intelligently adjust the operation of the heating wire based on the temperature, humidity and temperature difference data of the internal and external environments. This effectively prevents condensation from occurring in the internal environment due to temperature and humidity changes, creating a stable and dry operating environment for the circuit breaker operating mechanism and related electrical components. This greatly reduces the probability of short circuits, component corrosion and damage caused by condensation, and significantly improves the overall reliability and stability of the equipment. It ensures that the pole-mounted circuit breaker can operate stably in coastal areas, plateau areas and other areas with large temperature differences between day and night, reduces equipment downtime for maintenance due to condensation, and improves the continuity of power supply.

[0014] Through the design of the mechanism box, inner box, and partition, the temperature control buffers changes in external temperature, stabilizes the thermal environment of the inner box, and makes the heating wire work more efficiently and accurately. In terms of protection, it blocks dust, rain, and sand, enhances the sealing of the inner box, extends the life of components, reduces failures and maintenance costs, and improves reliability. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a sectional view of the internal structure of the mechanism box of this utility model;

[0017] Figure 2 yes Figure 1Enlarged view of the structure at point A in the middle;

[0018] Figure 3 This is a three-dimensional structural view of the entire utility model;

[0019] Legend:

[0020] 1. Circuit breaker body; 2. Mechanism box; 201. Chamber; 3. Inner box; 4. Mounting slot; 5. Receiving slot; 6. Heating wire; 7. Cover plate; 8. Controller; 9. Temperature sensor; 10. Temperature and humidity sensor; 11. Solar panel; 12. Battery pack; 13. Air inlet; 14. Air outlet; 15. Exhaust fan; 16. Baffle; 17. Humidity sensor. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Specific implementation examples are given below.

[0023] Please see Figure 1-Figure 3The present invention discloses a pole-mounted circuit breaker for preventing condensation, comprising a circuit breaker body 1 and a mechanism box 2. An inner box 3 for accommodating the circuit breaker operating mechanism and related electrical components is fixedly mounted inside the mechanism box 2 via a fixing bracket. A partition cavity 201 separates the mechanism box 2 and the inner box 3. Each outer wall of the inner box 3 has a mounting groove 4, within which a coiled receiving groove 5 is formed. A heating wire 6 is coiled within the receiving groove 5. A cover plate 7 is fixedly mounted within the mounting groove 4 to isolate the heating wire 6 via screws. A controller 8 and a temperature sensor 9 are fixedly mounted on the mechanism box 2 via wires for data connection. The inner box 3... A temperature and humidity sensor 10 for detecting the internal temperature is fixedly installed on the inner wall, and the temperature and humidity sensor 10 is connected to the controller 8 via a wire. A solar panel 11 is fixedly installed on the outer wall of the mechanism box 2, and a battery pack 12 for storing the electrical energy converted by the solar panel 11 is fixedly installed on one side of the cavity 201, and the two are electrically connected via a wire. During operation, the first temperature sensor 9 detects the external ambient temperature of the mechanism box 2, while the temperature and humidity sensor 10 detects the temperature and humidity data inside the inner box 3, and transmits this data to the controller 8. The controller 8 uses a built-in preset algorithm that comprehensively considers the air saturation humidity and temperature. Based on factors such as the relationship curve, when the humidity inside the inner chamber 3 reaches a certain value, and the temperature difference between the inner chamber 3 and the external ambient temperature of the mechanism box 2 exceeds a critical value, indicating a high risk of condensation on the inner wall of the inner chamber 3, the controller 8 controls the heating wire 6 to be energized. When the heating wire 6 is working, the heat generated is gradually transferred from the outer wall of the inner chamber 3 to the entire inner chamber 3 according to the principle of heat conduction, focusing on raising the temperature of the inner wall. The controller 8 can dynamically adjust the power of the heating wire 6 according to the real-time feedback data of the temperature and humidity inside the inner chamber 3, precisely controlling the heating amount, so that the temperature environment of the inner wall is stabilized at a suitable state that will not produce condensation, thereby effectively preventing the formation of condensation. The solar panel 11 converts solar energy into electrical energy and stores it in the battery pack 12, providing power to electrical equipment such as the heating wire 6. Through the coordinated operation of the temperature sensor 9, the temperature and humidity sensor 10, and the controller 8, it accurately monitors and intelligently adjusts the heating wire 6 based on the temperature and humidity of the inner box 3 and the temperature difference between the inside and outside, effectively preventing condensation in the inner box 3 due to temperature and humidity changes, creating a stable and dry environment for the circuit breaker components, reducing the risk of short circuits and corrosion, and improving the reliability and stability of the equipment. The solar panel 11 provides power, which is energy-saving and environmentally friendly, reduces dependence on external power sources, reduces long-term operating costs, and is suitable for outdoor pole-mounted circuit breaker applications, helping the stable operation and sustainable development of outdoor equipment in the power system.

[0024] Meanwhile, in this utility model, the design of the mechanism box 2, inner box 3, and partition 201 serves several purposes. First, the mechanism box 2 acts as an outer box, acting as a temperature buffer. In a natural environment, the outer box can act as the first barrier, mitigating the impact of rapid temperature changes on the inner box 3. The mechanism box 2 absorbs some of the impact of temperature changes, preventing the temperature around the inner box 3 from dropping immediately, thus giving the controller time to activate the heating wire. In terms of protection, the mechanism box 2 effectively prevents external dust, rain, sand, and other elements from directly contacting the inner box 3.

[0025] Furthermore, an air inlet 13 is provided on one side of the mechanism box 2, and an air outlet 14 is provided at the bottom of the mechanism box 2. An exhaust fan 15 is fixedly installed at the air outlet 14. A humidity sensor 17 is fixedly installed on the inner wall of the mechanism box 2 inside the cavity 201 and is connected to the controller 8 via a wire. During operation, the humidity sensor 17 monitors the humidity in the cavity 201 in real time. When the humidity exceeds a set threshold, the controller 8 starts the exhaust fan 15. External air enters the cavity 201 from the air inlet 13. Under the action of the exhaust fan 15, the humid air in the cavity 201 is discharged from the air outlet 14, realizing the circulation and dehumidification of the air in the cavity 201. The timely discharge of humid air in the cavity 201 further reduces the humidity in the mechanism box 2, reduces the possibility of condensation, and effectively protects the electrical equipment inside the box. At the same time, through the intelligent control of the humidity sensor 17 and the controller 8, the exhaust fan 15 can automatically control its power operation according to the actual humidity, improving the intelligence and operating efficiency of the equipment.

[0026] Furthermore, a rainproof baffle 16 is fixedly installed on the outer wall of the mechanism box 2 at the air inlet 13. During operation, the baffle 16 is located above the air inlet 13. When encountering rainy weather, the baffle 16 can prevent rainwater from directly entering the air inlet 13, keeping the air entering the air inlet 13 as dry as possible, preventing rainwater from entering the mechanism box 2, avoiding short circuits or moisture damage to the internal electrical equipment caused by rainwater entering, ensuring the normal operation of the equipment under severe weather conditions, and extending the service life of the equipment.

[0027] Furthermore, the inner wall of the air inlet 13 is an inverted conical bevel, and the lowest point of the inverted conical bevel is located outside the mechanism box 2. During operation, the design of the inverted conical bevel allows a small amount of rainwater or condensate entering the air inlet 13 to flow out of the mechanism box 2 under the action of gravity, without entering the partition cavity 201. This further enhances the rainproof and drainage capabilities of the air inlet, effectively reduces the risk of equipment failure caused by rainwater or condensate entering the partition cavity, and improves the overall waterproof performance of the mechanism box 2.

[0028] Furthermore, the cover plate 7 has built-in insulation material; during operation, the insulation material can reduce the heat loss from the heating wire 6, allowing more heat to be transferred to the inner box 3, improving heating efficiency, maintaining the stability of the internal temperature of the inner box 3, improving the heat utilization efficiency of the heating wire 6, reducing energy waste, and at the same time, it can more stably maintain the internal temperature of the inner box 3, enhance the anti-condensation effect, and ensure that the circuit breaker operating mechanism and related electrical components are in a suitable working environment. The insulation material can be polycarbonate material, or a suitable insulation material can be replaced according to the actual use.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A pole-mounted circuit breaker for preventing condensation, comprising a circuit breaker body (1) and a mechanism box (2), characterized in that: The mechanism box (2) is fixedly installed with an inner box (3) for accommodating the circuit breaker operating mechanism and related electrical components by a fixing frame. There is a partition (201) between the mechanism box (2) and the inner box (3). The outer wall of the inner box (3) is provided with a mounting groove (4). The mounting groove (4) is provided with a coiled receiving groove (5). The receiving groove (5) is coiled with a heating wire (6). The mounting groove (4) is fixedly installed with a cover plate (7) that isolates the heating wire (6) by screws. The mechanism box (2) is fixedly installed with a controller (8) and a temperature sensor (9) connected by wires. The inner wall of the inner box (3) is fixedly installed with a temperature and humidity sensor (10) for detecting the internal temperature. The temperature and humidity sensor (10) is connected to the controller (8) by wires.

2. The anti-condensation pole-mounted circuit breaker according to claim 1, characterized in that: A solar panel (11) is fixedly installed on the outer wall of the mechanism box (2), and a battery pack (12) for storing the electrical energy converted by the solar panel (11) is fixedly installed on one side of the cavity (201), and the two are electrically connected by wires.

3. The anti-condensation pole-mounted circuit breaker according to claim 1, characterized in that: An air inlet (13) is provided on one side of the mechanism box (2), and an air outlet (14) is provided at the bottom of the mechanism box (2). An exhaust fan (15) is fixedly installed at the air outlet (14). A humidity sensor (17) is fixedly installed on the inner wall of the mechanism box (2) inside the partition cavity (201) and is connected to the controller (8) via a wire.

4. The anti-condensation pole-mounted circuit breaker according to claim 1, characterized in that: The outer wall of the mechanism box (2) is fixedly equipped with a rainproof baffle (16) at the air inlet (13).

5. A pole-mounted circuit breaker for preventing condensation according to claim 3, characterized in that: The inner wall of the air inlet (13) is an inverted conical bevel, and the lowest point of the inverted conical bevel is located outside the mechanism box (2).

6. The anti-condensation pole-mounted circuit breaker according to claim 1, characterized in that: The cover plate (7) has built-in insulation material.

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