Test experiment device for direct current circuit breaker

Abstract

The utility model discloses a test experiment device for a direct current breaker, which is characterized in that a control seat is fixedly mounted in the middle of one end of a test box, indicator lights are symmetrically and fixedly mounted at the bottom of the control seat, a placement flat plate is fixedly mounted in the middle of the bottom end of the test box, and an insulation pad is fixedly bonded on the surface of the top end of the placement flat plate; according to the utility model, through the use of the electric push rod, the position of the movable clamping plate is adjusted, and the movable clamping plate and the positioning plate are used for clamping and fixing a direct current circuit breaker needing to be tested and experimented, so that the direct current circuit breaker needs to be tested and experimented; the fixing mode is simple and convenient, great convenience is provided for wiring and experiments of workers, the bottom of the direct-current circuit breaker is isolated and protected through the insulating pad, meanwhile, the experiment result of the direct-current circuit breaker can be quickly shown and processed outwards through the indicator lamp, and use is more convenient and faster.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker testing technology, specifically a testing experimental device for DC circuit breakers. Background Technology

[0002] Both DC circuit breakers and on-load tap changers refer to the tap changer regulation method of transformers. The difference is that off-load tap changers do not have the ability to switch taps under load. This is because such tap changers have a short-term disconnection process during tap switching. Disconnecting the load current will cause arcing between the contacts, burning out the tap changer or causing a short circuit. Therefore, the transformer must be de-energized when adjusting the tap. In power systems with large capacity and high voltage, such as power plants and substations, DC systems provide reliable power for relay protection, operation control, signal and sound systems, and emergency lighting equipment. As one of the most important components in DC systems, the stable and reliable operation of miniature DC circuit breakers directly ensures the safety of the entire power system. During the research and development and production of circuit breakers, it is necessary to test their characteristics such as power outage protection to ensure that they can operate smoothly in use.

[0003] However, the circuit breaker currently lacks a fixing mechanism and the locking method is inconvenient, which causes the circuit breaker to shake during opening and other operations. Therefore, this utility model provides a test experimental device for DC circuit breakers to meet people's needs. Utility Model Content

[0004] This invention provides a test apparatus for DC circuit breakers, which can effectively solve the problem mentioned in the background art that the circuit breaker lacks a fixing mechanism and the locking method is inconvenient, resulting in the circuit breaker shaking during opening and other operations.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a test experimental device for DC circuit breakers, comprising a test box, a controller fixedly installed at one end inside the test box, connecting wires symmetrically fixedly connected to one end of the controller, and connectors fixedly connected to the ends of the connecting wires, a control base fixedly installed in the middle of one end of the test box, indicator lights symmetrically fixedly installed at the bottom of the control base, a placement plate fixedly installed in the middle of the bottom end of the test box, an insulating pad fixedly bonded to the surface of the top of the placement plate, a positioning plate fixedly installed at one end of the top of the placement plate, and an electric push rod fixedly installed inside the test box at one side of the placement plate, with a movable clamping plate fixedly connected to the end of the electric push rod;

[0006] One end of the test box is movably connected to a side flap via a hinge. Positioning holes are provided on the top of both sides of the test box. Limiting blocks are fixedly installed at both ends of the test box at one side of the side flap. The top of the test box is movably connected to an upper flap via a hinge. A transparent observation plate is embedded in the middle of the upper flap. A limiting strip is fixedly connected to one end of the upper flap. Positioning pins are symmetrically installed through both ends of the limiting strip.

[0007] Preferably, the signal output terminal of the controller is connected to the signal input terminal of the control base, and the length of both connecting lines is greater than the distance between the controller and the placed plate.

[0008] Preferably, the height of the positioning plate is greater than the thickness of the insulating pad, and the bottom end of the movable clamp is flush with the top end of the insulating pad.

[0009] Preferably, the limiting strip is closely attached to the surface of the side flap, the top of the side flap is flush with the top of the test box, and one end of the positioning pin is embedded in the positioning hole.

[0010] Preferably, a battery is fixedly installed inside the test box at the end furthest from the controller, a protective partition is fixedly installed inside the test box at the position on one side of the battery, and a charging port is provided at the bottom of one end of the test box at the position corresponding to the battery.

[0011] Preferably, the input terminals of the controller, the control base, and the electric push rod are all electrically connected to the output terminal of the battery, and the top of the protective partition is flush with the top of the test box.

[0012] Compared with the prior art, the advantages of this utility model are: the structure of this utility model is scientific and reasonable, and it is safe and convenient to use.

[0013] 1. Equipped with a control base, indicator lights, a placement plate, an insulating pad, a positioning plate, an electric push rod, and a movable clamping plate. The position of the movable clamping plate is adjusted by using the electric push rod. The movable clamping plate and the positioning plate are used to clamp and fix the DC circuit breaker to be tested. The fixing method is simple and provides great convenience for the staff to connect wires and conduct experiments. The insulating pad isolates and protects the bottom of the DC circuit breaker. At the same time, the indicator lights can quickly display the test results of the DC circuit breaker, making it more convenient to use.

[0014] 2. Equipped with side flaps, positioning holes, limit blocks, an upper flap, a transparent observation panel, limit strips, and positioning pins, the side flaps and upper flap can be flipped to unfold when installing and connecting the circuit breaker before the experiment, providing ample operating space and greatly facilitating experimental preparation. The positioning holes and pins work together to lock and secure the upper flap, while the limit strips on the side of the upper flap provide stability and limit the movement of the side flaps. This allows the upper and side flaps to be joined and wrapped together during the experiment, providing protection. Furthermore, the transparent observation panel allows direct monitoring of the internal experimental process.

[0015] 3. Equipped with a storage battery, protective partition, and charging port, the storage battery provides power to the electronic components inside the experimental equipment, making it more convenient to use. No rewiring is required, the experimental table is kept clean, and the storage battery can be charged through the charging port during idle time. The protective partition separates and protects the storage battery. Attached Figure Description

[0016] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the test box of this utility model;

[0020] Figure 3 This is a schematic diagram of the installation structure of the storage battery of this utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the movable clamping plate of this utility model;

[0022] The following are labeled in the diagram: 1. Test box; 2. Controller; 3. Connecting wire; 4. Connector; 5. Control base; 6. Indicator light; 7. Placement plate; 8. Insulating pad; 9. Positioning plate; 10. Electric push rod; 11. Movable clamp; 12. Side flip plate; 13. Positioning hole; 14. Limiting block; 15. Top flip plate; 16. Transparent observation plate; 17. Limiting strip; 18. Positioning pin; 19. Battery; 20. Protective partition; 21. Charging port. Detailed Implementation

[0023] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0024] Example: Figure 1-4 As shown, this utility model provides a technical solution: a test experimental device for DC circuit breakers, including a test box 1. A controller 2 is fixedly installed at one end inside the test box 1. Connecting wires 3 are symmetrically fixedly connected to one end of the controller 2, and connectors 4 are fixedly connected to the ends of the connecting wires 3. A control base 5 is fixedly installed in the middle of one end of the test box 1. Indicator lights 6 are symmetrically fixedly installed at the bottom of the control base 5. The signal output terminal of the controller 2 is connected to the signal input terminal of the control base 5. The lengths of both connecting wires 3 are greater than the distance between the controller 2 and the placement plate 7. A placement plate 7 is fixedly installed in the middle of the bottom end of the test box 1. An insulating pad 8 is fixedly adhered to the surface of the top of the placement plate 7. A fixed connector 4 is fixedly installed at one end of the top of the placement plate 7. Positioning plate 9, inside test box 1, is an electric push rod 10 fixedly installed on one side of the plate 7. The end of the electric push rod 10 is fixedly connected to a movable clamping plate 11. The height of the positioning plate 9 is greater than the thickness of the insulating pad 8. The bottom end of the movable clamping plate 11 is flush with the top end of the insulating pad 8. The position of the movable clamping plate 11 is adjusted by using the electric push rod 10. The DC circuit breaker to be tested is clamped and fixed by the movable clamping plate 11 and the positioning plate 9. The fixing method is simple and provides great convenience for the staff to connect wires and conduct experiments. The insulating pad 8 isolates and protects the bottom of the DC circuit breaker. At the same time, the test results of the DC circuit breaker can be quickly displayed and processed by the indicator light 6, making it more convenient to use.

[0025] One end of the test chamber 1 is hinged to a side flap 12. Positioning holes 13 are provided on the top of both sides of the test chamber 1. Limiting blocks 14 are fixedly installed at both ends of the test chamber 1, located on one side of the side flap 12. The top of the test chamber 1 is hinged to an upper flap 15. A transparent observation plate 16 is embedded in the middle of the upper flap 15. A limiting strip 17 is fixedly connected to one end of the upper flap 15. Positioning pins 18 are symmetrically installed through both ends of the limiting strip 17. The limiting strip 17 is tightly attached to the surface of the side flap 12, and the top of the side flap 12 is flush with the top of the test chamber 1. One end of 18 is embedded inside the positioning hole 13. Utilizing the fact that both the side flap 12 and the top flap 15 can be flipped, it can be unfolded when installing and connecting the circuit breaker before the experiment, providing a large operating space and greatly facilitating the experimental preparation work. At the same time, the top flap 15 is locked and fixed by the cooperation of the positioning hole 13 and the positioning pin 18, while the limiting strip 17 on the side of the top flap 15 can limit and stabilize the side flap 12, so that the top flap 15 and the side flap 12 can be spliced ​​and wrapped during the experiment, which plays a protective role. Moreover, the internal experimental process can be directly monitored by using the transparent observation plate 16.

[0026] A battery 19 is fixedly installed inside the test chamber 1 at the end furthest from the controller 2. A protective partition 20 is fixedly installed inside the test chamber 1 at one side of the battery 19. A charging port 21 is provided at the bottom of one end of the test chamber 1, corresponding to the position of the battery 19. The input terminals of the controller 2, the control base 5, and the electric push rod 10 are all electrically connected to the output terminal of the battery 19. The top of the protective partition 20 is flush with the top of the test chamber 1. The battery 19 provides power to the electronic components inside the experimental equipment, making it more convenient to use. There is no need to rewire, keeping the experimental table clean. The battery 19 can be charged through the charging port 21 during idle time. The protective partition 20 also separates and protects the battery 19.

[0027] The working principle and usage process of this utility model are as follows: First, the staff takes out the positioning pin 18, flips the upper flap 15 upward to reveal the top of the test box 1, and flips the side flap 12 to one side to reveal the side of the test box 1, providing a certain operating space. The staff takes the DC circuit breaker to be tested and places it on the top of the insulating pad 8. Both connectors 4 are fixedly inserted into the predetermined connection positions on the DC circuit breaker. One end of the DC circuit breaker is pushed to be close to the positioning plate 9. The electric push rod 10 extends forward and pushes the movable clamp 11 to slide on the surface of the insulating pad 8 until the movable clamp 11 is close to the surface of the DC circuit breaker. The DC circuit breaker is clamped and fixed by the movable clamp 11 and the positioning plate 9.

[0028] Next, push the side flap 12 upwards to make it stand upright on the side of the test box 1, and flip the upper flap 15 to fit against the top of the test box 1. The limiting strip 17 is tightly attached to the surface of the side flap 12 to limit and stabilize the side flap 12 so that it will not shake. Use the positioning pin 18 to pass through the limiting strip 17 and insert it into the positioning hole 13 to lock and fix the limiting strip 17 and the upper flap 15. Then, the staff starts the test from the outside. The controller 2 changes the circuit and detects the connected DC circuit breaker under short circuit and other conditions to determine whether the DC circuit breaker will automatically trip and disconnect the power in the event of a short circuit fault. The brightness of the indicator light 6 is used to determine whether the tripping is successful. The staff can also observe and monitor the test through the transparent observation plate 16 during the experiment. The electronic components used in the experiment, such as the controller 2, control base 5, and electric push rod 10, are all powered by the storage battery 19. During idle time, the staff can charge the storage battery 19 through the charging port 21.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A test apparatus for DC circuit breakers, comprising a test box (1), characterized in that: A controller (2) is fixedly installed at one end inside the test box (1). A connecting line (3) is symmetrically fixedly connected to one end of the controller (2). A connector (4) is fixedly connected to the end of the connecting line (3). A control seat (5) is fixedly installed in the middle of one end of the test box (1). An indicator light (6) is symmetrically fixedly installed at the bottom of the control seat (5). A placement plate (7) is fixedly installed in the middle of the bottom end of the test box (1). An insulating pad (8) is fixedly bonded to the surface of the top of the placement plate (7). A positioning plate (9) is fixedly installed at one end of the top of the placement plate (7). An electric push rod (10) is fixedly installed inside the test box (1) at one side of the placement plate (7). A movable clamp (11) is fixedly connected to the end of the electric push rod (10). One end of the test box (1) is movably connected to a side flap (12) via a hinge. Positioning holes (13) are provided on the top of both sides of the test box (1). Limiting blocks (14) are fixedly installed at both ends of the test box (1) on one side of the side flap (12). The top of the test box (1) is movably connected to an upper flap (15) via a hinge. A transparent observation plate (16) is embedded in the middle of the upper flap (15). A limiting strip (17) is fixedly connected to one end of the upper flap (15). Positioning pins (18) are symmetrically installed through both ends of the limiting strip (17).

2. The test apparatus for DC circuit breakers according to claim 1, characterized in that, The signal output terminal of the controller (2) is connected to the signal input terminal of the control base (5), and the lengths of the two connecting lines (3) are both greater than the distance between the controller (2) and the placement plate (7).

3. The test apparatus for DC circuit breakers according to claim 1, characterized in that, The height of the positioning plate (9) is greater than the thickness of the insulating pad (8), and the bottom end of the movable clamping plate (11) is flush with the top end of the insulating pad (8).

4. The test apparatus for DC circuit breakers according to claim 1, characterized in that, The limiting strip (17) is in close contact with the surface of the side flap (12), the top of the side flap (12) is flush with the top of the test box (1), and one end of the positioning pin (18) is embedded in the positioning hole (13).

5. The test apparatus for DC circuit breakers according to claim 1, characterized in that, A battery (19) is fixedly installed inside the test box (1) at the end away from the controller (2). A protective partition (20) is fixedly installed inside the test box (1) at the position on one side of the battery (19). A charging port (21) is opened at the bottom of one end of the test box (1) at the position corresponding to the battery (19).

6. The test apparatus for DC circuit breakers according to claim 5, characterized in that, The input terminals of the controller (2), the control base (5), and the electric push rod (10) are all electrically connected to the output terminal of the storage battery (19), and the top of the protective partition (20) is flush with the top of the test box (1).

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