Environment-friendly load switch arc extinguishing structure

Abstract

The invention provides an environment-friendly load switch arc extinguishing structure, and relates to the technical field of arc extinguishing structures, the environment-friendly load switch arc extinguishing structure comprises a frame structure and an arc extinguishing structure, the environment-friendly load switch arc extinguishing structure is also provided with a dynamic sealing assembly, impurities such as metal steam generated in the arc extinguishing process can be effectively removed by adding filtering after air blowing, and in the process, the sealing effect is good. The arc extinguishing structure plays a key role, an arc extinguishing chamber in the arc extinguishing structure is a main area for generating metal steam, so that the insulating part is always kept good insulating performance, and a safe electrical environment is constructed by insulating components such as the insulating shell, the silicon rubber reinforced insulation and the insulating support and a filtering measure. And the safety of operators is protected, and safe and reliable operation of equipment under normal working voltage is ensured, so that a stable electrical environment in the environment-friendly gas cabinet is favorably maintained, electrical accidents such as flashover and breakdown caused by reduction of insulating property are avoided, and the stability of a whole power system is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of arc extinguishing structures, and more specifically, particularly relates to an environmentally friendly load switch arc extinguishing structure. Background Art

[0002] The arc extinguishing structure of the load switch is mainly used to extinguish the arc generated by the switch when the circuit is disconnected. Its working principle is to use various physical or chemical methods to quickly extinguish the arc, thereby protecting the switch equipment and ensuring the safety of the circuit. Common arc extinguishing structures include the compressed gas type. In this structure, when the switch is disconnected, the moving contact moves to compress the gas, causing the gas to spray out at high speed to blow out the arc. There is also a gas-generating type, which uses the high temperature of the arc to decompose the solid gas-generating material in the arc extinguishing chamber to produce gas. These gases are used to extinguish the arc. The magnetic blowing arc extinguishing structure relies on the force of the magnetic field on the arc to lengthen and cool the arc and eventually extinguish it. These arc extinguishing structures can effectively improve the performance of the load switch, extend its service life, and play a key role in fields such as power systems.

[0003] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems: During the operation of the environmentally friendly gas-filled cabinet load switch, metal vapor will be generated after the arc extinguishing process. These metal vapors may adhere to the surface of the insulating parts. Due to the conductivity and other characteristics of the metal vapor, the original insulation performance of the insulating parts may be destroyed, thereby causing insulation failure.

[0004] In view of this, the existing structure and defects are studied and improved to provide an environmentally friendly load switch arc extinguishing structure. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an environmentally friendly load switch arc extinguishing structure to solve the above problems.

[0006] An environmentally friendly load switch arc extinguishing structure comprises a frame structure and an arc extinguishing structure. The environmentally friendly load switch arc extinguishing structure is also provided with a dynamic sealing assembly. The arc extinguishing structure is fixedly connected to the inner wall of the frame structure. The lower end of the frame structure is fixedly connected to two beams, the two beams are parallel to each other, and one end of the frame structure is fixedly connected to the dynamic sealing assembly.

[0007] Preferably, a transmission shaft is arranged inside the frame structure, and both ends of the transmission shaft are fixedly connected to the inner wall of the frame structure.

[0008] Preferably, a group of silicone rubber reinforced insulation is arranged inside the frame structure, and each silicone rubber reinforced insulation is fixedly connected to the transmission shaft.

[0009] Preferably, two insulating supports are provided inside the frame structure, both ends of the two insulating supports are fixedly connected to the inner wall of the frame structure, and the two insulating supports are parallel to each other.

[0010] Preferably, the arc extinguishing structure comprises a group of insulating shells, each of which is located between two insulating supports.

[0011] Preferably, both ends of each insulating housing are provided with copper bars for incoming and outgoing lines, and the copper bars for incoming and outgoing lines on the same side are fixedly connected to corresponding insulating supports.

[0012] Preferably, an arc extinguishing chamber is provided inside each insulating shell, and two moving ends are provided at the lower end of each insulating shell.

[0013] Preferably, the upper end of each moving end is located inside the corresponding arc extinguishing chamber, and a double-break structure is also provided inside the arc extinguishing chamber.

[0014] Preferably, a fixed moving end insulating member is provided at the lower end of each insulating shell, and each fixed moving end insulating member is fixedly connected to the corresponding moving end.

[0015] Preferably, opposite ends of the two inlet and outlet copper bars are both located inside the insulating housing.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by adding filtering after air blowing, impurities such as metal vapor generated during the arc extinguishing process can be effectively removed. In this process, the arc extinguishing structure plays a key role. The arc extinguishing chamber inside it is the main area where metal vapor is generated, and the incoming and outgoing copper busbars and moving ends and other components work together to complete the arc extinguishing action, which also involves the generation and diffusion of metal vapor. The filtering measures after air blowing can prevent these metal vapors from adhering to the surface of the insulating parts, thereby ensuring that the insulating parts always maintain good insulation performance. Insulating parts such as insulating shells, silicone rubber reinforced insulation and insulating supports and filtering measures jointly construct a safe electrical environment, protect the safety of operators and ensure that the equipment operates safely and reliably under normal operating voltage. This helps to maintain a stable electrical environment inside the environmental protection gas cabinet, avoid electrical accidents caused by reduced insulation performance, such as flashover and breakdown, and ensure the stability of the entire power system.

[0017] In the present invention, the frame structure provides overall support for each component, ensuring the stability of the load switch structure. The insulating support is easy to install on the gas box as an integrated frame, which simplifies the installation process and improves the installation efficiency. At the same time, it ensures that each component is installed accurately and stably, which helps to quickly assemble and debug the overall equipment and lay the foundation for the stable operation of the equipment.

[0018] In the present invention, the dynamic sealing assembly serves as the connecting part between the integrated switch and the operating structure, which realizes the effective operation of the internal switch by the operating mechanism from the outside, and ensures the sealing of the cabinet, prevents gas leakage, ensures the stability of the internal environment of the inflation cabinet, and ensures the normal operation of the equipment.

[0019] In the present invention, the transmission shaft adopts a glass fiber rod, which has insulation properties while realizing the rotation function, effectively avoiding the occurrence of electrical failures and improving the safety and stability of equipment operation. The silicone rubber reinforced insulation enhances the insulation effect by increasing the creepage distance, further reducing the risk of electrical breakdown, and helping to improve the overall insulation performance of the inflatable cabinet and adapt to different working voltage environments. The insulating shell protects and insulates the internal structure, and together with other insulating components, constructs a safe electrical environment to protect the safety of operators and ensure the normal operation of the equipment.

[0020] In the present invention, the arc extinguishing structure adopts a grid arc extinguishing method, and the hole on the top of the incoming and outgoing copper busbar is used for air blowing arc extinguishing, which effectively improves the arc extinguishing efficiency, can quickly extinguish the arc, reduce the damage of the arc to the equipment, and ensure the safe and stable operation of the equipment. The arc extinguishing chamber is the key area of ​​arc extinguishing, and cooperates with the incoming and outgoing copper busbars, the moving end, etc. to realize the efficient arc extinguishing function. The arc surface on the top of the moving end is made of copper tungsten alloy CUW, which improves the electrical life, extends the service life of the load switch, and reduces the equipment maintenance cost and replacement frequency. The fixed moving end insulating part not only ensures the transmission function of the moving end, but also plays an insulating role to ensure electrical safety during the arc extinguishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the framework structure of the present invention; Figure 3 It is a structural schematic diagram of the transmission shaft of the present invention; Figure 4 It is a structural schematic diagram of the inlet and outlet copper busbar of the present invention; Figure 5 It is a schematic structural diagram of the insulating housing of the present invention; Figure 6 It is a structural schematic diagram of the arc extinguishing chamber of the present invention; Figure 7 It is a structural schematic diagram of the insulating support of the present invention.

[0022] In the figure, the correspondence between the component names and the figure numbers is: 11, frame structure; 12, arc extinguishing structure; 13, dynamic sealing assembly; 14, transmission shaft; 15, insulating support; 16, silicone rubber reinforced insulation; 17, insulating shell; 18, inlet and outlet copper busbars; 19, arc extinguishing chamber; 20, moving end; 21, fixed moving end insulation; 22, crossbeam. DETAILED DESCRIPTION

[0023] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] See also Figure 1-Figure 7 The present invention provides an environmentally friendly load switch arc extinguishing structure, comprising a frame structure 11 and an arc extinguishing structure 12. The environmentally friendly load switch arc extinguishing structure is also provided with a dynamic sealing assembly 13. The arc extinguishing structure 12 is fixedly connected to the inner wall of the frame structure 11. The lower end of the frame structure 11 is fixedly connected with two cross beams 22, and the two cross beams 22 are parallel to each other. One end of the frame structure 11 is fixedly connected with the dynamic sealing assembly 13. A transmission shaft 14 is provided inside the frame structure 11, and both ends of the transmission shaft 14 are fixedly connected to the inner wall of the frame structure 11. By adding filtering after air blowing, impurities such as metal vapor generated during the arc extinguishing process can be effectively removed. In this process, the arc extinguishing structure 12 plays a key role, and the arc extinguishing chamber inside it 19 is the main area where metal vapor is generated, and the copper busbar 18 of the incoming and outgoing lines and the moving end 20 and other components work together to complete the arc extinguishing action, which also involves the generation and diffusion of metal vapor. The filtering measures after the gas blowing can prevent these metal vapors from adhering to the surface of the insulating parts, thereby ensuring that the insulating parts always maintain good insulation performance. Insulating parts such as the insulating shell 17, silicone rubber reinforced insulation 16 and insulating support 15 and filtering measures jointly build a safe electrical environment to protect the safety of operators and ensure that the equipment operates safely and reliably under normal operating voltage. This helps to maintain a stable electrical environment inside the environmental protection gas cabinet, avoid electrical accidents caused by the degradation of insulation performance, such as flashover and breakdown, and ensure the stability of the entire power system.

[0025] A group of silicone rubber reinforced insulation 16 is arranged inside the frame structure 11, and each silicone rubber reinforced insulation 16 is fixedly connected to the transmission shaft 14. Two insulating supports 15 are arranged inside the frame structure 11, and both ends of the two insulating supports 15 are fixedly connected to the inner wall of the frame structure 11. The two insulating supports 15 are parallel to each other. The frame structure 11 provides overall support for each component and ensures the stability of the load switch structure. The insulating supports 15 are easy to install on the gas box as an integrated frame, which simplifies the installation process and improves the installation efficiency. At the same time, it ensures that each component is installed accurately and stably, which helps to quickly assemble and debug the overall equipment and lays the foundation for the stable operation of the equipment.

[0026] The arc extinguishing structure 12 includes a group of insulating shells 17, each insulating shell 17 is located between two insulating supports 15, and both ends of each insulating shell 17 are provided with input and output copper bars 18. The input and output copper bars 18 located on the same side are fixedly connected to the corresponding insulating supports 15. The dynamic sealing assembly 13 serves as the connecting part between the integrated switch and the operating structure, which realizes the effective operation of the internal switch by the operating mechanism from the outside, and ensures the sealing of the cabinet, prevents gas leakage, ensures the stability of the internal environment of the inflatable cabinet, and ensures the normal operation of the equipment.

[0027] An arc extinguishing chamber 19 is provided inside each insulating shell 17, and two moving ends 20 are provided at the lower end of each insulating shell 17. The upper end of each moving end 20 is located inside the corresponding arc extinguishing chamber 19. A double-break structure is also provided inside the arc extinguishing chamber 19. The double-break structure design effectively shares the requirements for the overall length, transmission angle, and force. Therefore, the product size can be further reduced to reduce the limitation of the installation size and effectively improve the overall service life of the product. The transmission shaft 14 adopts a glass fiber rod, which has insulating properties while realizing the rotation function, effectively avoiding the occurrence of electrical failures and improving the safety and stability of equipment operation. The silicone rubber reinforced insulation 16 increases the creepage distance to enhance the insulation effect, further reducing the risk of electrical breakdown, and helping to improve the overall insulation performance of the inflatable cabinet and adapt to different working voltage environments. The insulating shell 17 protects and insulates the internal structure, and together with other insulating components, builds a safe electrical environment to protect the safety of operators and ensure the normal operation of the equipment.

[0028] A fixed moving end insulating member 21 is provided at the lower end of each insulating housing 17, and each fixed moving end insulating member 21 is fixedly connected to the corresponding moving end 20. The opposite ends of the two incoming and outgoing copper busbars 18 are located inside the insulating housing 17. The arc extinguishing structure 12 adopts a grid arc extinguishing method, and the hole on the top of the incoming and outgoing copper busbars 18 is used for air blowing arc extinguishing, which effectively improves the arc extinguishing efficiency, can quickly extinguish the arc, reduce the damage of the arc to the equipment, and ensure the safe and stable operation of the equipment. The arc extinguishing chamber 19 is the key area of ​​arc extinguishing, and cooperates with the incoming and outgoing copper busbars 18, the moving end 20, etc. to realize efficient arc extinguishing function. The arc surface on the top of the moving end 20 is made of copper tungsten alloy CUW70, which improves the electrical life, extends the service life of the load switch, and reduces the equipment maintenance cost and replacement frequency. The fixed moving end insulating member 21 not only ensures the transmission function of the moving end 20, but also plays an insulating role to ensure electrical safety during the arc extinguishing process.

[0029] Working principle: In the first step, by adding filtering after air blowing, impurities such as metal vapor generated during the arc extinguishing process can be effectively removed. In this process, the arc extinguishing structure 12 plays a key role. The arc extinguishing chamber 19 inside it is the main area where metal vapor is generated, and the incoming and outgoing copper busbars 18 and the moving end 20 and other components work together to complete the arc extinguishing action, which also involves the generation and diffusion of metal vapor. The filtering measures after air blowing can prevent these metal vapors from adhering to the surface of the insulating parts, thereby ensuring that the insulating parts always maintain good insulation performance. Insulating parts such as the insulating shell 17, silicone rubber reinforced insulation 16 and insulating support 15 and filtering measures jointly build a safe electrical environment to protect the safety of operators and ensure that the equipment operates safely and reliably under normal operating voltage. This helps to maintain a stable electrical environment inside the environmental protection gas cabinet, avoid electrical accidents caused by the degradation of insulation performance, such as flashover and breakdown, and ensure the stability of the entire power system.

[0030] In the second step, the frame structure 11 provides overall support for each component, ensuring the stability of the load switch structure. The insulating support 15 is easy to install on the gas box as an integrated frame, which simplifies the installation process and improves the installation efficiency. At the same time, it ensures that each component is installed accurately and stably, which helps to quickly assemble and debug the overall equipment and lay the foundation for the stable operation of the equipment.

[0031] In the third step, the dynamic sealing component 13 serves as the connecting part between the integrated switch and the operating structure, realizes the effective operation of the internal switch by the operating mechanism from the outside, and ensures the sealing of the cabinet, prevents gas leakage, ensures the stability of the internal environment of the inflation cabinet, and ensures the normal operation of the equipment.

[0032] The fourth step is that the transmission shaft 14 adopts glass fiber rods, which have insulation properties while realizing the rotation function, effectively avoiding the occurrence of electrical failures and improving the safety and stability of equipment operation. The silicone rubber reinforced insulation 16 enhances the insulation effect by increasing the creepage distance, further reducing the risk of electrical breakdown, and helping to improve the overall insulation performance of the inflatable cabinet and adapt to different working voltage environments. The insulating shell 17 protects and insulates the internal structure, and together with other insulating components, builds a safe electrical environment to protect the safety of operators and ensure the normal operation of the equipment.

[0033] The fifth step, the arc extinguishing structure 12 adopts a grid arc extinguishing method, and the hole on the top of the incoming and outgoing copper busbar 18 is used for air blowing arc extinguishing, which effectively improves the arc extinguishing efficiency, can quickly extinguish the arc, reduce the damage of the arc to the equipment, and ensure the safe and stable operation of the equipment. The arc extinguishing chamber 19 is the key area of ​​arc extinguishing, and cooperates with the incoming and outgoing copper busbar 18, the moving end 20, etc. to achieve efficient arc extinguishing function. The arc surface on the top of the moving end 20 is made of copper tungsten alloy CUW70, which improves the electrical life, extends the service life of the load switch, and reduces the equipment maintenance cost and replacement frequency. The fixed moving end insulating part 21 not only ensures the transmission function of the moving end 20, but also plays an insulating role to ensure electrical safety during the arc extinguishing process.

[0034] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An environmentally friendly load switch arc extinguishing structure, comprising a frame structure (11) and an arc extinguishing structure (12), characterized in that: The environmentally friendly load switch arc extinguishing structure is also provided with a dynamic sealing component (13); The arc extinguishing structure (12) is fixedly connected to the inner wall of the frame structure (11), the lower end of the frame structure (11) is fixedly connected to two cross beams (22), the two cross beams (22) are parallel to each other, and one end of the frame structure (11) is fixedly connected to a dynamic sealing assembly (13).

2. An environmentally friendly load switch arc extinguishing structure as claimed in claim 1, characterized in that: A transmission shaft (14) is arranged inside the frame structure (11); Wherein, both ends of the transmission shaft (14) are fixedly connected to the inner wall of the frame structure (11).

3. An environmentally friendly load switch arc extinguishing structure as claimed in claim 2, characterized in that: A group of silicone rubber reinforced insulation (16) is arranged inside the frame structure (11); Each silicone rubber reinforced insulation (16) is fixedly connected to the transmission shaft (14).

4. An environmentally friendly load switch arc extinguishing structure as claimed in claim 3, characterized in that: Two insulating supports (15) are arranged inside the frame structure (11); Wherein, both ends of the two insulating supports (15) are fixedly connected to the inner wall of the frame structure (11), and the two insulating supports (15) are parallel to each other.

5. An environmentally friendly load switch arc extinguishing structure as claimed in claim 4, characterized in that: The arc extinguishing structure (12) comprises a set of insulating shells (17); Each insulating housing (17) is located between two insulating supports (15).

6. An environmentally friendly load switch arc extinguishing structure as claimed in claim 5, characterized in that: Both ends of each insulating housing (17) are provided with inlet and outlet copper bars (18); The inlet and outlet copper bars (18) located on the same side are all fixedly connected to the corresponding insulating supports (15).

7. An environmentally friendly load switch arc extinguishing structure as claimed in claim 6, characterized in that: An arc extinguishing chamber (19) is provided inside each of the insulating shells (17); Wherein, two movable ends (20) are arranged at the lower end of each insulating housing (17).

8. An environmentally friendly load switch arc extinguishing structure as claimed in claim 7, characterized in that: The upper end of each movable end (20) is located inside the corresponding arc extinguishing chamber (19), and a double-break structure is also provided inside the arc extinguishing chamber (19).

9. An environmentally friendly load switch arc extinguishing structure as claimed in claim 8, characterized in that: A fixed moving end insulating member (21) is provided at the lower end of each insulating housing (17); Wherein, each fixed moving end insulating member (21) is fixedly connected to the corresponding moving end (20).

10. An environmentally friendly load switch arc extinguishing structure as claimed in claim 9, characterized in that: The opposite ends of the two inlet and outlet copper bars (18) are both located inside the insulating housing (17).

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