Plateau arcing simulation device

Abstract

The utility model discloses a plateau arcing simulation device, which comprises a cylindrical tank body, the left end and the right end of the cylindrical tank body are respectively provided with a step-in tank door, the top of the cylindrical tank body is provided with a high-voltage wire inlet and outlet end, and the high-voltage wire inlet and outlet end comprises a wire inlet end used for leading in a high-voltage system and a wire outlet end used for leading in a grounding grid; the inner end, located in the cylindrical tank body, of the wire inlet end is connected with a fixed electrode fixedly arranged in the cylindrical tank body, and the inner end, located in the cylindrical tank body, of the wire outlet end is connected with an adjustable electrode which is movably arranged in the cylindrical tank body and can be close to and away from the fixed electrode to achieve arcing distance adjustment. A negative pressure pumping connector communicated with the cylindrical tank body is formed in the step-in tank door and connected with a vacuum pump used for pumping out air in the cylindrical tank body so as to adjust the air pressure in the cylindrical tank body to achieve simulation of plateau environments at different altitudes. According to the utility model, simulation of plateau arcing and arc extinguishing processes and fixed arcs in different altitude environments can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of simulation devices, in particular to a plateau arc burning simulation device. Background Art

[0002] Ground arc simulation tests at different altitudes are particularly important for the safe and reliable operation of power systems. Conducting grounding tests in different altitude environments is beneficial to the selection, operation and maintenance of power equipment in different altitude areas.

[0003] Currently, most ground arc simulation tests are conducted at room temperature and pressure, making them incapable of verifying grounding tests at high altitudes. This significantly hinders the research and analysis of high-altitude ground faults. Even single-phase ground arc simulation tests conducted in high-altitude areas of western China can only simulate ground arc simulation tests at the current altitude, enabling analysis of ground faults in that region. Simulation tests at other altitudes are not feasible, hindering the selection and operation and maintenance of power equipment. This reduces the reliability and safety of power equipment and negatively impacts the stability of the power system. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a plateau arc burning simulation device, which can realize arc experiments under different air pressures.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows.

[0006] A plateau arc simulation device comprises a cylindrical tank body, wherein the left and right ends of the cylindrical tank body are respectively provided with walk-in tank doors for entering the cylindrical tank body for operation, wherein the top of the cylindrical tank body is provided with high-voltage inlet and outlet terminals, and the high-voltage inlet and outlet terminals include an inlet terminal for introducing a high-voltage system and an outlet terminal for introducing a grounding grid; the inner end of the inlet terminal located inside the cylindrical tank body is connected to a fixed electrode fixedly arranged inside the cylindrical tank body, and the inner end of the outlet terminal located inside the cylindrical tank body is connected to an adjustable electrode movably arranged inside the cylindrical tank body and capable of approaching and moving away from the fixed electrode to adjust the arc spacing; a negative pressure extraction interface connected to the cylindrical tank body is provided on the walk-in tank door, and the negative pressure extraction interface is connected to a vacuum pump for pumping out the air in the cylindrical tank after the walk-in tank door is closed to adjust the air pressure in the cylindrical tank to achieve plateau environment simulation at different altitudes.

[0007] Preferably, the outer end of the inlet terminal located outside the cylindrical tank body is connected to a phase line of the high voltage system, and the outer end of the outlet terminal located outside the cylindrical tank body is connected to the grounding grid.

[0008] Preferably, the walk-in tank door is an open structure, and is provided with a rotary door handle connected to the cylindrical tank body for realizing opening and tightening of the walk-in tank door.

[0009] Preferably, a sealing rubber ring is provided between the walk-in tank door and the cylindrical tank body for achieving sealing after the walk-in tank door is closed.

[0010] Preferably, a step-by-step controllable motor and a bidirectional movable track are provided inside the cylindrical tank body. The step-by-step controllable motor and the bidirectional movable track include a track, a slide, a screw and a stepper motor. The track is horizontally fixed at the bottom of the cylindrical tank body, the screw is rotatably arranged at the bottom of the cylindrical tank body and is located on one side of the track and is arranged parallel to the track, the slide is arranged on the screw nut of the screw and is slidably assembled with the track, and the stepper motor is connected to the end of the screw through a transmission mechanism; high-voltage insulating supports are fixedly provided on the bottom of the cylindrical tank body and on the slide respectively, the fixed electrode is fixedly provided on the top of the high-voltage insulating support fixed on the bottom of the cylindrical tank body, and the adjustable electrode is fixedly provided on the top of the high-voltage insulating support fixed on the slide.

[0011] Preferably, the device further comprises a controller, and an output end of the controller is connected to a controlled end of the stepping motor.

[0012] Preferably, the cylindrical tank body is provided with a positive and negative pressure gauge for monitoring the pressure inside the cylindrical tank body so as to calculate the altitude of the plateau through the pressure data inside the cylindrical tank body.

[0013] Preferably, a high-intensity visual explosion-proof observation window is provided on the cylindrical tank body at a position opposite to the fixed electrode and the adjustable electrode for observing the burning and extinction process of the grounding arc so as to record images of the arcing and extinction process.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is as follows.

[0015] The utility model can realize the simulation of plateau arcing and arc extinction processes and fixed arcs in different altitude environments through the high-voltage input and output terminals, fixed electrodes, step-by-step controllable motors and bidirectional movable tracks, adjustable electrodes, vacuum pumps and positive and negative pressure gauges. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Among them: 1. Cylindrical tank body, 2. Walk-in tank door, 3. Rotary door handle, 4. High-voltage inlet and outlet terminals, 5. Fixed electrode, 6. Adjustable electrode, 7. High-voltage insulation support, 8. Step-type controllable motor and bidirectional movable track, 9. High-strength visual explosion-proof observation window, 10. Positive and negative pressure gauges, 11. Negative pressure extraction interface, 12. Vacuum pump. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] A plateau arc simulation device, combined with Figure 1 As shown, the tank comprises a cylindrical body 1, with walk-in doors 2 provided at each end. These doors allow easy access to the tank 1 for operation, which can be closed upon completion. The tank 1 and doors are constructed of high-strength 304 stainless steel and serve as a vehicle for simulating plateau environments at varying altitudes, thereby simulating negative pressure conditions at varying altitudes.

[0020] The walk-in door 2 is an open structure and is provided with a rotary door handle 3. The rotary door handle 3 is connected to the cylindrical tank body 1 and is used to open and close the walk-in door 2. A sealing rubber ring is provided between the walk-in door 2 and the cylindrical tank body 1 to achieve a seal when the walk-in door 2 is closed, thereby ensuring a sealed environment for the cylindrical tank body 1.

[0021] A fixed electrode 5 and an adjustable electrode 6 are provided inside the cylindrical tank body 1, wherein the fixed electrode 5 is fixedly provided inside the cylindrical tank body 1; the adjustable electrode 6 is movably provided inside the cylindrical tank body 1 and can approach and move away from the fixed electrode 5, thereby realizing the adjustment of the arcing distance, realizing the plateau arcing and arcing extinction process and the simulation of the fixed arc.

[0022] Specifically, a step-type controllable motor and a bidirectional movable track 8 are provided inside the cylindrical tank body 1. The step-type controllable motor and the bidirectional movable track 8 include a track, a slide, a screw and a stepper motor, wherein the track is horizontally fixed at the bottom of the cylindrical tank body 1; the screw is rotatably set at the bottom of the cylindrical tank body 1 and is located on one side of the track and parallel to the track; the slide is set on the screw nut of the screw and is slidably assembled with the track; the stepper motor is connected to the end of the screw through a transmission mechanism. The transmission mechanism is an existing technology, and its specific structure is not limited or elaborated here. The controlled end of the stepper motor is connected to a controller, and the staff can control the stepper motor through the controller. A high-voltage insulating support 7 is fixedly provided on the bottom of the cylindrical tank body 1 and on the slide, respectively. The fixed electrode 5 is fixedly provided on the top of the high-voltage insulating support 7 fixed to the bottom of the cylindrical tank body 1, and the adjustable electrode 6 is fixedly provided on the top of the high-voltage insulating support 7 fixed to the slide. The high-voltage insulating support 7 can isolate the fixed electrode 5 and the adjustable electrode 6 from the cylindrical tank body 1, thereby preventing the cylindrical tank body 1 from generating high voltage and avoiding the risk of electric shock. When in use, the controller sets parameters to control the rotation of the stepper motor, and the rotation of the stepper motor drives the screw to rotate. The rotation of the screw drives the slide to move. The movement of the slide drives the adjustable electrode 6 to move closer to and away from the fixed electrode 5, thereby adjusting the distance between the fixed electrode 5 and the adjustable electrode 6 to achieve arcing distance adjustment.

[0023] The top of the cylindrical tank 1 is equipped with high-voltage input and output terminals 4. These terminals include an input terminal for connecting to the high-voltage system, and an output terminal for connecting to the grounding grid. Specifically, the input terminal, located outside the cylindrical tank 1, is connected to a phase line of the high-voltage system, while the output terminal, located outside the cylindrical tank 1, is connected to the grounding grid, thereby simulating a single-phase grounding fault. The inner end of the input terminal, located inside the cylindrical tank 1, is connected to a fixed electrode 5, while the inner end of the output terminal, located inside the cylindrical tank 1, is connected to an adjustable electrode 6.

[0024] A negative pressure extraction interface 11 is provided on a walk-in tank door 2, and the negative pressure extraction interface 11 is connected to the cylindrical tank body 1. The negative pressure extraction interface 11 is also connected to a vacuum pump 12. When the walk-in tank door 2 is closed, the air in the cylindrical tank body 1 can be pumped out by the vacuum pump 12, thereby adjusting the air pressure in the cylindrical tank body 1. This not only achieves the simulation of plateau environments at different altitudes, but also increases the adjustable range of the altitude environment. A positive and negative pressure gauge 10 is provided on the cylindrical tank body 1. The positive and negative pressure gauge 10 is used to monitor the pressure inside the cylindrical tank body 1. The staff can observe the pressure data inside the cylindrical tank body 1 through the positive and negative pressure gauge 10, thereby facilitating the measurement of the plateau altitude.

[0025] A high-strength visual explosion-proof observation window 9 is provided on the cylindrical tank body 1 at a position opposite to the fixed electrode 5 and the adjustable electrode 6. The high-strength visual explosion-proof observation window 9 is made of high-strength tempered glass. The burning and extinction process of the grounding arc can be observed through the high-strength visual explosion-proof observation window 9, thereby facilitating the recording of arc burning and arc extinction process images.

[0026] When the utility model is in use, a high-voltage system is introduced through the input end of the high-voltage input and output terminal 4, and a grounding grid is introduced through the output end, and the walk-in tank door 2 is pressed tightly by the rotary door handle 3 to ensure the sealing of the cylindrical tank body 1; a vacuum pump 12 is used to connect the negative pressure interface 11 to extract the air inside the cylindrical tank body 1, and the positive and negative pressure gauges 10 display the internal pressure of the cylindrical tank body 1, which is converted to simulate the plateau environment at different altitudes; the controller sets parameters to control the step-type controllable motor and the bidirectional movable track 8 to realize the movement of the adjustable electrode 6, adjust the arcing distance, realize the plateau arcing and arcing extinction process and the simulation of the fixed arc; the burning and extinction process of the grounding arc is observed through the high-intensity visual explosion-proof observation window 9, and the arcing and arcing process images can be recorded.

Claims

1. A plateau arc burning simulation device, comprising a cylindrical tank body (1), wherein the left and right ends of the cylindrical tank body (1) are respectively provided with walk-in tank doors (2) for entering the cylindrical tank body (1) for operation, and wherein: The top of the cylindrical tank body (1) is provided with a high-voltage inlet and outlet terminal (4), which includes an inlet terminal for introducing a high-voltage system and an outlet terminal for introducing a grounding network; the inner end of the inlet terminal located inside the cylindrical tank body (1) is connected to a fixed electrode (5) fixedly arranged inside the cylindrical tank body (1), and the inner end of the outlet terminal located inside the cylindrical tank body (1) is connected to an adjustable electrode (6) movably arranged inside the cylindrical tank body (1) and capable of moving closer to and farther from the fixed electrode (5) to achieve arcing distance adjustment; the walk-in tank door (2) is provided with a negative pressure extraction interface (11) in communication with the cylindrical tank body (1), and the negative pressure extraction interface (11) is connected to a vacuum pump (12) for pumping out air from the cylindrical tank body (1) after the walk-in tank door (2) is closed to adjust the air pressure inside the cylindrical tank body (1) to achieve plateau environment simulation at different altitudes.

2. The plateau arc burning simulation device according to claim 1, characterized in that: The outer end of the inlet terminal located outside the cylindrical tank body (1) is connected to a phase line of the high-voltage system, and the outer end of the outlet terminal located outside the cylindrical tank body (1) is connected to the grounding grid.

3. The plateau arc burning simulation device according to claim 1, characterized in that: The walk-in tank door (2) is an open structure, and is provided with a rotary door handle (3) connected to the cylindrical tank body (1) and used to realize opening and tightening of the walk-in tank door (2).

4. The plateau arc burning simulation device according to claim 3, characterized in that: A sealing rubber ring is provided between the walk-in tank door (2) and the cylindrical tank body (1) for achieving sealing after the walk-in tank door (2) is closed.

5. The plateau arc burning simulation device according to claim 1, characterized in that: A step-by-step controllable motor and a bidirectional movable track (8) are provided inside the cylindrical tank body (1). The step-by-step controllable motor and the bidirectional movable track (8) include a track, a slide, a screw and a stepper motor. The track is horizontally fixedly provided at the bottom of the cylindrical tank body (1). The screw is rotatably provided at the bottom of the cylindrical tank body (1) and is located on one side of the track and is arranged parallel to the track. The slide is provided on the screw nut of the screw and is slidably assembled with the track. The stepper motor is connected to the end of the screw through a transmission mechanism. A high-voltage insulating support (7) is fixedly provided on the bottom of the cylindrical tank body (1) and the slide, respectively. The fixed electrode (5) is fixedly provided at the top end of the high-voltage insulating support (7) fixed at the bottom of the cylindrical tank body (1). The adjustable electrode (6) is fixedly provided at the top end of the high-voltage insulating support (7) fixed on the slide.

6. The plateau arc burning simulation device according to claim 5, characterized in that: The device also includes a controller, and an output end of the controller is connected to a controlled end of the stepping motor.

7. The plateau arc burning simulation device according to claim 1, characterized in that: The cylindrical tank body (1) is provided with a positive and negative pressure gauge (10) for monitoring the pressure inside the cylindrical tank body (1) so as to calculate the altitude of the plateau through the pressure data inside the cylindrical tank body (1).

8. The plateau arc burning simulation device according to claim 1, characterized in that: A high-intensity visual explosion-proof observation window (9) for observing the burning and extinguishing process of the grounding arc is provided at a position on the cylindrical tank (1) opposite to the fixed electrode (5) and the adjustable electrode (6) so as to record images of the burning and extinguishing process.

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