An on-line detection environmental protection gas circuit breaker

Abstract

An online testing environmentally friendly gas circuit breaker includes a chassis with an assembly space inside. Within the assembly space are mounting stations, where a mounting plate is placed. The mounting plate and the assembly plate at the bottom of the circuit breaker are assembled using bolts. A testing platform is located on the top of the chassis. The circuit breaker chassis employs a modular assembly structure. The mounting plate and the circuit breaker assembly plate are fixed with bolts. Combined with a pressure sensor on the testing platform, the internal gas pressure of the arc-extinguishing chamber can be monitored in real time, further ensuring gas insulation and arc-extinguishing performance.

Description

Technical Field

[0001] This utility model relates to an electrical component, specifically to an online detection environmental gas circuit breaker. Background Technology

[0002] Gas circuit breakers are mainly used in high-voltage power systems, such as substations and power plants. They are adapted to harsh environments such as high altitude and humidity. They rely on the excellent insulation and arc-extinguishing properties of environmentally friendly gas to achieve reliable breaking. When opening, the moving contact separates from the stationary contact to generate an electric arc. The gas compressor compresses the environmentally friendly gas to form a high-speed airflow, which blows the arc longitudinally or laterally. The arc is extinguished through strong cooling and deionization. When closing, the contacts close quickly to restore the conductive path. The environmentally friendly gas is recycled in a sealed container. The pressure needs to be monitored by a density relay to prevent leakage. At the same time, components such as equalizing capacitors and insulating rods are used to optimize the electric field distribution and mechanical stability to ensure safe operation under high voltage.

[0003] In the prior art, CN201310198976.X discloses a high-voltage DC gas circuit breaker. This invention discloses a high-voltage DC gas circuit breaker that can interrupt fault current at a relatively high rated voltage level. The high-voltage DC gas circuit breaker consists of a superconducting current limiter and a hydrogen circuit breaker connected in series. The working principle is as follows: the fault current is first limited by the superconducting current limiter and then interrupted by the hydrogen circuit breaker, thereby achieving the purpose of interrupting the fault current. The high-voltage DC gas circuit breaker of this invention has the advantages of fast response speed, low current overload coefficient, simple structure, small size, low overvoltage, safety and reliability, and ensuring that the short-circuit current value of the line will not exceed the overcurrent value of the superconducting current limiter, thus protecting other equipment.

[0004] Although existing gas circuit breakers can prevent the short-circuit current from exceeding the overcurrent limit of the superconducting current limiter and protect other equipment, they also have the drawback of not being able to effectively detect internal air pressure. Utility Model Content

[0005] To overcome the inconvenience of detecting the internal air pressure value of existing circuit breakers, this utility model provides an online detection method for environmentally friendly gas circuit breakers.

[0006] This utility model adopts the following technical solution: an online detection environmentally friendly gas circuit breaker, including a chassis, an assembly space inside the chassis, a placement station in the assembly space, a placement plate on the placement station for assembling the circuit breaker, the placement plate and the assembly plate at the bottom of the circuit breaker being assembled by bolts, a detection platform on the top of the chassis, a slot on the detection platform, an environmental pressure detection component (a pressure sensor) in the slot on the detection platform, the circuit breaker being a gas circuit breaker, an arc-extinguishing chamber on the circuit breaker, a stationary contact inside the arc-extinguishing chamber, a moving contact on one side of the stationary contact, a connecting rod at the bottom of the moving contact, a drive rod below the connecting rod, and a drive component at the bottom of the drive rod.

[0007] The driving component is a driving hydraulic cylinder, which is provided with a connecting section. The connecting section and the driving rod are fixed together by bolts.

[0008] The chassis is provided with air flow components on both sides, and the air flow components have air intake pipes, on which control solenoid valves are installed.

[0009] The air intake pipe is provided with an air outlet port, the air outlet port is provided with an assembly thread, and the assembly thread is provided with an air distribution box.

[0010] The air distribution box is provided with multiple air outlets, and the arc extinguishing chamber is provided with a component for further pressure equalization, which is a pressure equalization capacitor.

[0011] The connecting rod is an insulating rod, and an external insulating component is provided on the outside of the insulating rod. The external insulating component is an insulating porcelain sleeve.

[0012] Compared to existing technologies, the circuit breaker enclosure adopts a modular assembly structure. The shelf plate and the circuit breaker assembly plate are fixed with bolts. With the help of pressure sensors on the detection platform, the internal gas pressure of the arc-extinguishing chamber can be monitored in real time, ensuring that the gas insulation and arc-extinguishing effect are further guaranteed. The pressure sensor can provide a good understanding of the internal pressure of the circuit breaker enclosure, and the pressure value can be monitored online. The drive hydraulic cylinder is rigidly connected to the drive rod with bolts. Combined with the double-layer insulation design of the insulating rod and the external insulating porcelain sleeve, it not only ensures the precise control of the opening and closing of the moving contact, but also avoids the risk of leakage under high-voltage environment.

[0013] The arc-extinguishing chamber is equipped with equalizing capacitors to effectively balance the electric field distribution and reduce the probability of arc reignition. The airflow components control the air intake through solenoid valves, and the multiple air outlets in the distribution box provide uniform airflow, significantly improving the heat dissipation capacity and medium circulation efficiency of the equipment under high load conditions. The use of environmentally friendly gas as the arc-extinguishing medium reduces the risk of environmental pollution. The composite protection system of insulating porcelain bushings and equalizing capacitors further enhances the equipment's adaptability to complex electromagnetic environments, ensuring long-term safety and reliability, and making it suitable for power system operation scenarios. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a sectional view of the present invention;

[0017] In the diagram: 1 is the chassis, 2 is the assembly space, 3 is the placement station, 4 is the testing platform, 5 is the slot, 6 is the pressure sensor, 7 is the gas circuit breaker, 8 is the arc extinguishing chamber, 9 is the stationary contact, 10 is the moving contact, 11 is the connecting rod, 12 is the drive rod, 13 is the drive hydraulic cylinder, 14 is the air inlet pipe, 15 is the control solenoid valve, 16 is the air distribution box, 17 is the equalizing capacitor, and 18 is the insulating porcelain sleeve. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] An online detection environmentally friendly gas circuit breaker includes a chassis 1, an assembly space 2 inside the chassis 1, a placement station 3 inside the assembly space 2, a placement plate on the placement station 3 for assembling the circuit breaker, the placement plate and the assembly plate at the bottom of the circuit breaker being assembled by bolts, a detection platform 4 on the top of the chassis 1, a slot 5 on the detection platform 4, an environmental pressure detection component (pressure sensor 6) inside the slot 5, the circuit breaker being a gas circuit breaker 7, an arc-extinguishing chamber 8 on the circuit breaker, a stationary contact 9 inside the arc-extinguishing chamber 8, a moving contact 10 on one side of the stationary contact 9, a connecting rod 11 at the bottom of the moving contact 10, a drive rod 12 below the connecting rod 11, and a drive component at the bottom of the drive rod 12.

[0020] The driving component is a driving hydraulic cylinder 13, which has a connecting section. The connecting section and the driving rod are fixed together by bolts. The circuit breaker housing adopts a modular assembly structure. The shelf plate and the circuit breaker assembly plate are fixed together by bolts. With the help of the pressure sensor 6 on the detection platform, the internal air pressure of the arc-extinguishing chamber 8 can be monitored in real time to ensure the gas insulation and arc-extinguishing effect. The pressure sensor 6 can be used to understand the pressure inside the circuit breaker housing and can monitor the pressure value online. The driving hydraulic cylinder 13 is rigidly connected to the driving rod 12 by bolts. Combined with the double-layer insulation design of the insulating rod and the external insulating porcelain sleeve, it not only ensures the precise control of the opening and closing of the moving contact 10, but also avoids the risk of leakage under high voltage environment.

[0021] Airflow components are provided on both sides of the chassis 1. The airflow components include an air intake pipe 14, a control solenoid valve 15, an air outlet port, an assembly thread, an air distribution box 16, and multiple air outlets. The arc extinguishing chamber is provided with a component for further pressure equalization, which is a pressure equalization capacitor 17.

[0022] The connecting rod 11 is an insulating rod, and an external insulating component, namely an insulating porcelain sleeve 18, is provided on the outside of the insulating rod. The arc-extinguishing chamber 8 is equipped with an equalizing capacitor to effectively balance the electric field distribution and reduce the probability of arc reignition. The air flow component controls the air intake through a solenoid valve, and works with the multiple air outlets of the air diversion box 16 to uniformly guide the airflow, which significantly improves the heat dissipation capacity and medium circulation efficiency of the equipment under high load conditions. The use of environmentally friendly gas as the arc-extinguishing medium can reduce the risk of environmental pollution. The composite protection system of the insulating porcelain sleeve 18 and the equalizing capacitor further enhances the adaptability of the equipment in complex electromagnetic environments, ensuring the safety and reliability of long-term operation, and is suitable for power system operation scenarios.

[0023] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An online detection environmental gas circuit breaker, comprising a chassis, wherein the chassis has an assembly space, the assembly space has a mounting station, and the mounting station for assembling the circuit breaker has a mounting plate, wherein the mounting plate and the assembly plate at the bottom of the circuit breaker are assembled by bolts, characterized in that: The top of the chassis is equipped with a detection platform, and the detection platform has a slot. An environmental pressure detection component, which is a pressure sensor, is installed in the slot on the detection platform. The circuit breaker is a gas circuit breaker, and the circuit breaker is equipped with an arc-extinguishing chamber. A stationary contact is installed in the arc-extinguishing chamber, and a moving contact is installed on one side of the stationary contact. A connecting rod is installed at the bottom of the moving contact, and a drive rod is installed below the connecting rod. A drive component is installed at the bottom of the drive rod.

2. The on-line detecting environmental-friendly gas circuit breaker according to claim 1, characterized in that: The driving component is a driving hydraulic cylinder, which is provided with a connecting section. The connecting section and the driving rod are fixed together by bolts.

3. The on-line detecting environmental-friendly gas circuit breaker according to claim 1, characterized in that: The chassis is provided with air flow components on both sides, and the air flow components have air intake pipes, on which control solenoid valves are installed.

4. The on-line detecting environmental-friendly gas circuit breaker according to claim 3, characterized in that: The air intake pipe is provided with an air outlet port, the air outlet port is provided with an assembly thread, and the assembly thread is provided with an air distribution box.

5. The on-line detecting environmentally friendly gas circuit breaker according to claim 4, characterized in that: The air distribution box is provided with multiple air outlets, and the arc extinguishing chamber is provided with a component for further pressure equalization, which is a pressure equalization capacitor.

6. The on-line detecting environmentally friendly gas circuit breaker according to claim 5, characterized in that: The connecting rod is an insulating rod, and an external insulating component is provided on the outside of the insulating rod. The external insulating component is an insulating porcelain sleeve.

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