Vacuum circuit breaker with high altitude environment adaptability

Abstract

The utility model discloses a vacuum circuit breaker with high altitude environment adaptability, which relates to the technical field of vacuum circuit breakers and comprises a mechanism box, a first square groove is arranged on one side of the mechanism box, an air supply box is fixedly connected in the first square groove, a second square groove is arranged on the other side of the mechanism box, and the air supply box is fixedly connected in the second square groove. An air outlet box is fixedly connected into the second square groove, air holes are formed in the sides, close to each other, of the air supply box and the air outlet box, the air supply box and the air outlet box are matched through a circulation assembly, and the circulation assembly comprises a first air pipe, an equipment box, a second air pipe, a conveying device and a third air pipe; the equipment box and the conveying device are fixedly connected to the outer wall of the mechanism box. According to the vacuum circuit breaker with the high-altitude environment adaptability, through the arrangement of the air supply box, the air outlet box, the circulation assembly and other structures, drying airflow is formed in the mechanism box, water vapor is rapidly sucked in time, the use efficiency of the vacuum circuit breaker is improved, and therefore the vacuum circuit breaker has the high-altitude environment adaptability.

Description

Technical Field

[0001] This utility model relates to the field of vacuum circuit breaker technology, and in particular to a vacuum circuit breaker with high-altitude environment adaptability. Background Technology

[0002] Vacuum circuit breakers are named for their high vacuum nature, which is the medium used for arc extinguishing and the insulating medium between the contacts after arc extinguishing. They are characterized by their small size, light weight, suitability for frequent operation, and maintenance-free arc extinguishing, making them widely used in power distribution networks. Vacuum circuit breakers are indoor power distribution devices used in 3-10kV, 50Hz three-phase AC systems, and can be used for the protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations.

[0003] Currently, due to the large temperature difference between day and night, condensation is prone to occur inside the mechanism box of high-altitude outdoor pole-mounted vacuum circuit breakers. This can lead to creepage and abnormal flashover discharge of electrical components caused by insulation gaps, posing certain safety hazards to the equipment.

[0004] For example, a patent entitled "A High-Altitude Outdoor Pole-Mounted Vacuum Circuit Breaker" (patent application number: CN202122810362.5) discloses a high-altitude outdoor pole-mounted vacuum circuit breaker. By setting up an air pump, air pipe, heating and drying box, sealing mechanism and exhaust port, when condensation occurs inside the mechanism box, the inside of the mechanism box can be quickly heated and dried, and then the gas generated after drying is discharged. This avoids the occurrence of creepage and abnormal flashover discharge of electrical components caused by insulation gap, and increases the overall safety performance. However, the efficiency is low because exhaust is only set up with an exhaust port, and the inside of the mechanism box is easily moistened again.

[0005] Therefore, it is necessary to propose a vacuum circuit breaker with high-altitude environmental adaptability to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a vacuum circuit breaker with high-altitude environmental adaptability to solve the problems of low efficiency and easy secondary damping of the mechanism box by simply setting an exhaust port for exhaust.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a vacuum circuit breaker with high-altitude environment adaptability, including a mechanism box, a first square groove is provided on one side of the mechanism box, an air supply box is fixedly connected inside the first square groove, a second square groove is provided on the other side of the mechanism box, an air outlet box is fixedly connected inside the second square groove, air holes are provided on the sides of the air supply box and the air outlet box that are close to each other, and the air supply box and the air outlet box are connected by a circulation component.

[0008] Preferably, the circulation component includes a first air duct, an equipment box, a second air duct, a conveying device, and a third air duct. The equipment box and the conveying device are both fixedly connected to the outer wall of the mechanism box. One end of the first air duct is connected to the air outlet box, and the other end of the first air duct is connected to the equipment box. One end of the second air duct is connected to the equipment box, and the other end of the second air duct is connected to the conveying device. One end of the third air duct is connected to the conveying device, and the other end of the third air duct is connected to the air supply box.

[0009] Preferably, the air vents are provided in multiple ways.

[0010] Preferably, the multiple air vents are distributed in an S-shape.

[0011] Preferably, the inner diameter of each air vent gradually increases in the direction away from the circulation component.

[0012] Preferably, a condensation sensor is installed inside the mechanism housing.

[0013] Preferably, both ends of the mechanism box are fixedly connected to a fixing seat, and both ends of the fixing seat are provided with mounting holes.

[0014] Preferably, an insulator is installed on the mechanism box.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model, by setting up structures such as an air supply box, an air outlet box, and a circulation component, forms a drying airflow inside the mechanism box and quickly and timely extracts water vapor, thereby improving the efficiency of the vacuum circuit breaker and making it adaptable to high-altitude environments.

[0017] 2. Multiple air vents are arranged in an S-shape to expand the airflow coverage area and ensure drying effect;

[0018] 3. Gradually increase the inner diameter of each air hole in the direction away from the circulation component to balance the impact of the conveying path and ensure the uniformity of air supply and suction. Attached Figure Description

[0019] Figure 1 This is a first-view structural schematic diagram of the vacuum circuit breaker with high-altitude environment adaptability of this utility model.

[0020] Figure 2 This is a second-view structural schematic diagram of the vacuum circuit breaker with high-altitude environment adaptability of this utility model.

[0021] Figure 3 This is a third-view structural diagram of the vacuum circuit breaker with high-altitude environment adaptability of this utility model.

[0022] Figure 4This is a schematic diagram of the air outlet box and air vent structure of this utility model.

[0023] In the diagram: 1. Mechanism box; 2. First square channel; 3. Air supply box; 4. Second square channel; 5. Air outlet box; 6. Air hole; 7. First air duct; 8. Equipment box; 9. Second air duct; 10. Conveying device; 11. Third air duct; 12. Fixing base; 13. Mounting hole; 14. Insulator; 15. Condensation sensor. Detailed Implementation

[0024] This utility model provides, for example Figures 1-4 The vacuum circuit breaker shown is adapted to high-altitude environments and includes a mechanism box 1, on which insulators 14 are installed, and multiple insulators 14 are provided. The mechanism box 1 is also provided with an operating mechanism (not shown in the figure).

[0025] Both ends of the mechanism box 1 are fixedly connected to the mounting base 12, and both ends of the mounting base 12 are provided with mounting holes 13. In actual use, bolts and other components are passed through the mounting holes 13 to install the vacuum circuit breaker on the outdoor pole at high altitude.

[0026] Considering that condensation may easily occur inside the mechanism box 1 when used in high-altitude environments due to the large temperature difference between day and night, which may lead to creepage and abnormal flashover discharge of electrical components caused by insulation gap, in order to improve the safety of vacuum circuit breaker use, a first square groove 2 is provided on one side of the mechanism box 1, and an air supply box 3 is fixedly connected inside the first square groove 2; a second square groove 4 is provided on the other side of the mechanism box 1, and an air outlet box 5 is fixedly connected inside the second square groove 4. Air holes 6 are provided on the sides of the air supply box 3 and the air outlet box 5 that are close to each other, and multiple air holes 6 are provided.

[0027] The air supply box 3 and the air outlet box 5 are connected by a circulation assembly, which includes a first air duct 7, an equipment box 8, a second air duct 9, a conveying device 10, and a third air duct 11. The equipment box 8 and the conveying device 10 are both fixedly connected to the outer wall of the mechanism box 1. The equipment box 8 contains condensation and heating equipment. The condensation equipment includes a condenser plate and other structures to condense water vapor; the heating equipment includes electric heating wires and other structures to heat the condensed gas to form high-temperature gas; the conveying device 10 includes a fan and other structures to transport the gas. A filter screen can also be installed inside the equipment box 8 to filter impurities, and this can be adjusted according to specific usage requirements.

[0028] One end of the first air duct 7 is connected to the air outlet box 5, and the other end of the first air duct 7 is connected to the equipment box 8. One end of the second air duct 9 is connected to the equipment box 8, and the other end of the second air duct 9 is connected to the conveying device 10. One end of the third air duct 11 is connected to the conveying device 10, and the other end of the third air duct 11 is connected to the air supply box 3.

[0029] A condensation sensor 15 is installed inside the mechanism box 1.

[0030] Specifically, a controller can be set up to connect between the condensing equipment, heating equipment, conveying device 10, and condensation sensor 15. When the condensation sensor 15 detects that the humidity inside the mechanism box 1 exceeds the set threshold, it transmits this information to the controller. The controller then controls the condensing equipment, heating equipment, and conveying device 10 to start. The conveying device 10 quickly draws water vapor from inside the mechanism box 1 through the first air duct 7, air outlet box 5, and other structures. The condensing equipment condenses the water vapor. The heating equipment heats the condensed gas to form high-temperature gas, which is then transported to the inside of the mechanism box 1 through the third air duct 11, air outlet box 3, and other structures. A drying airflow is formed inside the mechanism box 1, which quickly heats and dries the inside of the mechanism box 1.

[0031] By setting up structures such as the air supply box 3, the air outlet box 5, and the circulation components, a drying airflow is formed inside the mechanism box 1, and water vapor is extracted in a timely and rapid manner, thereby improving the efficiency of the vacuum circuit breaker and enabling it to adapt to high-altitude environments.

[0032] The controller and its control principle are common technologies, and will not be elaborated here.

[0033] Multiple air holes 6 are distributed in an S-shape to expand the airflow coverage area and ensure the drying effect. The positions of the multiple air holes 6 can be set according to the distribution of electrical components inside the mechanism box 1.

[0034] Since the air vents 6, which are far from the circulation components, have a long conveying path, they are greatly affected by friction and other factors. Therefore, the inner diameter of each air vent 6 is gradually increased in the direction away from the circulation components to balance the influence of the conveying path and ensure the uniformity of air supply and suction.

Claims

1. A vacuum circuit breaker with high-altitude environment adaptability, comprising a mechanism box (1), characterized in that: The mechanism box (1) has a first square groove (2) on one side, and an air supply box (3) is fixedly connected inside the first square groove (2). The mechanism box (1) has a second square groove (4) on the other side, and an air outlet box (5) is fixedly connected inside the second square groove (4). The air supply box (3) and the air outlet box (5) are both provided with air holes (6) on the side that are close to each other, and the air supply box (3) and the air outlet box (5) are connected by a circulation component.

2. A vacuum circuit breaker with high-altitude environment adaptability according to claim 1, characterized in that: The circulation assembly includes a first air duct (7), an equipment box (8), a second air duct (9), a conveying device (10), and a third air duct (11). The equipment box (8) and the conveying device (10) are fixedly connected to the outer wall of the mechanism box (1). One end of the first air duct (7) is connected to the air outlet box (5), and the other end of the first air duct (7) is connected to the equipment box (8). One end of the second air duct (9) is connected to the equipment box (8), and the other end of the second air duct (9) is connected to the conveying device (10). One end of the third air duct (11) is connected to the conveying device (10), and the other end of the third air duct (11) is connected to the air supply box (3).

3. A vacuum circuit breaker with high-altitude environment adaptability according to claim 2, characterized in that: The air vents (6) are provided in multiple ways.

4. A vacuum circuit breaker with high-altitude environment adaptability according to claim 3, characterized in that: Multiple air vents (6) are distributed in an S-shape.

5. A vacuum circuit breaker with high-altitude environment adaptability according to claim 4, characterized in that: The inner diameter of each air vent (6) gradually increases in the direction away from the circulation component.

6. A vacuum circuit breaker with high-altitude environment adaptability according to claim 1, characterized in that: A condensation sensor (15) is installed inside the mechanism box (1).

7. A vacuum circuit breaker with high-altitude environment adaptability according to claim 1, characterized in that: Both ends of the mechanism box (1) are fixedly connected to a fixing seat (12), and both ends of the fixing seat (12) are provided with mounting holes (13).

8. A vacuum circuit breaker with high-altitude environment adaptability according to claim 1, characterized in that: An insulator (14) is installed on the mechanism box (1).

Images