A GIS large-flow aeration filter joint

Abstract

The utility model relates to the field of inflation joint, concretely is a GIS with big flow inflation filter joint, it is used to connect GIS gas chamber and inflation device, inflation device and GIS gas chamber are connected through main body mechanism, and the main body mechanism forms inflation passage, and the main body mechanism end part is provided with the air nozzle mechanism of connecting inflation device and leading through inflation passage, and sets up double filtration mechanism in inflation passage, in the utility model, the whole process gas has passed filter wick and filter screen two filtration barriers, has guaranteed the inflation speed while effectively prevented the foreign matter from entering the inside of GIS gas chamber, has improved the product quality of GIS combined electric appliance, has guaranteed the power grid operation reliability.

Description

Technical Field

[0001] This utility model relates to the field of air inflatable connectors, and more particularly to a high-flow-rate air filter connector for GIS. Background Technology

[0002] The power system plays an increasingly important role in people's lives. Gas-insulated metal-enclosed switchgear, also known as GIS switchgear, is an important component of the power system. It mainly consists of current transformers, circuit breakers, isolating grounding switches, bushings, etc.

[0003] GIS switchgear requires SF6 gas for internal filling. The filling process is typically completed by a filling device. During filling, this device often introduces foreign matter mixed in with the gas into the GIS gas chamber. This foreign matter can cause equipment malfunctions and create a risk of electric field distortion during operation. Generally, using a standard filling filter connector will reduce the filling speed. Utility Model Content

[0004] The purpose of this invention is to address the problems in the prior art where inflation introduces foreign objects and the use of an inflation filter connector reduces the inflation speed, by proposing a high-flow-rate inflation filter connector for GIS.

[0005] The technical solution of this utility model is as follows: a high-flow-rate air-filled filter connector for GIS, which is used to connect the GIS air chamber and the air-filling device; the air-filling device and the GIS air chamber are connected through a main body structure, an air-filling channel is formed in the main body structure, and an air nozzle mechanism is provided at the end of the main body structure to connect the air-filling device and conduct the air-filling channel. A double filter mechanism is provided in the air-filling channel.

[0006] Preferably, the main structure includes a filter cylinder, air nozzles at both ends of the filter cylinder, and connecting components for connecting the GIS air chamber.

[0007] Preferably, the connecting assembly includes a filter cartridge side connector at one end of the filter cartridge, an air chamber side connector at the other end of the filter cartridge side connector, and a GIS air chamber docking nut at the other end of the air chamber side connector. The GIS air chamber docking nut is connected to the inflation shut-off valve of the GIS air chamber and enables the inflation shut-off valve of the GIS air chamber to be open.

[0008] Preferably, the dual filtration mechanism includes a filter screen disposed in the side connector channel of the filter cylinder and a filter core rod disposed at the end of the side connector of the filter cylinder, the filter core rod being located inside the filter cylinder, and the end of the filter core rod away from the side connector of the filter cylinder being closed.

[0009] Preferably, a screw plug is provided on the inner circumferential wall of the filter cylinder side connector, and the two are threaded together, with a fourth sealing ring provided between the screw plug and the filter screen.

[0010] Preferably, the air nozzle mechanism includes an air inlet side connector disposed at the end of the filter cylinder and connected to the air inlet device, and an air inlet disposed on the air inlet side connector; the end of the air inlet side connector is inserted into the air inlet device, and in the air inlet state, the air inlet opens and opens the air inlet channel.

[0011] Preferably, the inflation side connector is provided with a perforated baffle, and the inflation nozzle includes a positioning section and a valve core. The positioning section is inserted into the extension section of the inflation side connector and the extension section is connected to the inflation device. One end of the valve core is conical and is sealed to the conical sealing surface in the positioning section. The other end of the valve core is a straight section and passes through the center hole of the perforated baffle. A return spring is sleeved on the straight section of the valve core. When the inflation device is in the inflation state, the valve core of the inflation nozzle is pushed open, and the inflation channel is opened.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: the gas reaches the GIS gas chamber through the inflation device and the filter connector. During the whole process, the gas passes through two filtration barriers, the filter core rod and the filter screen. These two filtrations form a double insurance, ensuring that foreign objects cannot enter the gas chamber even if one fails. While effectively preventing foreign objects from entering the GIS gas chamber, the inflation speed is guaranteed, the product quality of the GIS combined electrical appliance is improved, and the reliability of the power grid operation is guaranteed. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention.

[0014] Reference numerals in the attached drawings: 1. GIS air chamber docking nut; 2. Air chamber side connector; 3. Filter cylinder side connector; 4. Filter screen; 5. Plug; 6. Filter core rod; 7. Filter cylinder; 8. Inflation side connector; 9. First sealing ring; 10. Second sealing ring; 11. Third sealing ring; 12. Fourth sealing ring; 13. Fifth sealing ring; 14. Sixth sealing ring; 15. Seventh sealing ring; 16. Return spring; 17. Inflation nozzle; 18. Inflation device; 19. GIS air chamber. Detailed Implementation

[0015] Example 1

[0016] like Figure 1 As shown, the present invention proposes a high-flow-rate air filter connector for GIS, which is used to connect the GIS air chamber 19 and the air filling device 18. The air filling device 18 and the GIS air chamber 19 are connected through the main body structure, and an air filling channel is formed in the main body structure. An air nozzle mechanism is provided at the end of the main body structure to connect the air filling device 18 and conduct the air filling channel. A double filter mechanism is provided in the air filling channel.

[0017] The main structure includes a filter cylinder 7, air nozzle mechanisms at both ends of the filter cylinder 7, and a connecting assembly for connecting the GIS air chamber 19. The connecting assembly includes a filter cylinder side connector 3 at one end of the filter cylinder 7, an air chamber side connector 2 at the other end of the filter cylinder side connector 3, and a GIS air chamber docking nut 1 at the other end of the air chamber side connector 2. The GIS air chamber docking nut 1 connects to the inflation shut-off valve of the GIS air chamber 19, enabling the inflation shut-off valve to operate. Specifically, the GIS air chamber docking nut 1 is threadedly fixed to the inflation shut-off valve of the GIS air chamber 19. A second sealing ring 10 is provided on the outer wall of the air chamber side connector 2. The second sealing ring 10 acts as a limit, maintaining the relative position of the GIS air chamber docking nut 1 and the air chamber side connector 2, preventing the GIS air chamber docking nut 1 from sliding upwards and causing the exposed sealing surface of the air chamber side connector 2 to fail. After the GIS air chamber docking nut 1 and the GIS air chamber 19 are connected, the inflation shut-off valve is opened by a push rod inside the air chamber side connector 2, thus enabling operation.

[0018] The dual filtration mechanism includes a filter screen 4 disposed in the channel of the filter cylinder side connector 3, and a filter core 6 disposed at the end of the filter cylinder side connector 3. The filter core 6 is located inside the filter cylinder 7, and the end of the filter core 6 away from the filter cylinder side connector 3 is closed. The filter core 6 and the filter cylinder side connector 3 are threadedly connected, and a sixth sealing ring 14 is provided between the end of the filter core 6 and the bottom of the thread of the filter cylinder side connector 3.

[0019] The air nozzle mechanism includes an inflation side connector 8 located at the end of the filter cylinder 7 and connected to the inflation device 18, and an inflation nozzle 17 located on the inflation side connector 8. The end of the inflation side connector 8 is inserted into the inflation device 18. In the inflation state, the inflation nozzle 17 is opened and the inflation channel is opened. Specifically, a perforated baffle is provided inside the inflation side connector 8. The inflation nozzle 17 includes a positioning section and a valve core. The positioning section is inserted into the extension section of the inflation side connector 8 and is connected to the inflation device 18. One end of the valve core is conical and is sealed to the conical sealing surface in the positioning section. The other end of the valve core is a straight section that passes through the center hole of the perforated baffle. A return spring 16 is sleeved on the straight section of the valve core. In the inflation state of the inflation device 18, the valve core of the inflation nozzle 17 is pushed open, the inflation channel is opened, and the return spring 16 is compressed. After the inflation ends, under the thrust of the return spring 16, the elastic retaining ring is re-attached to the inner wall of the extension section for sealing.

[0020] Example 2

[0021] like Figure 1 As shown, this utility model proposes a high-flow-rate air-filled filter connector for GIS. Compared with Embodiment 1, this embodiment details the sealing structure.

[0022] The filter cylinder side connector 3 and the filter cylinder 7 are threaded together, and a fifth sealing ring 13 is provided on the filter cylinder side connector 3. The fifth sealing ring 13 contacts the end face of the filter cylinder 7 to achieve a seal and prevent leakage. The filter cylinder side connector 3 and the air chamber side connector 2 are threaded together, and a third sealing ring 11 is provided between the air chamber side connector 2 and the filter cylinder side connector 3 to achieve a seal and prevent leakage. A first sealing ring 9 is provided on the inner wall of the air chamber side connector 2, and the first sealing ring 9 fits against the outer wall of the inflation shut-off valve of the GIS air chamber 19. The filter core rod 6 and the filter cylinder side connector 3 are threaded together, and a sixth sealing ring 14 is provided between the end of the filter core rod 6 and the bottom of the thread of the filter cylinder side connector 3. A screw plug 5 is provided on the inner peripheral wall of the filter cylinder side connector 3, and the two are threaded together. A fourth sealing ring 12 is provided between the screw plug 5 and the filter screen 4. The filter cylinder 7 and the inflation side connector 8 are threaded together, and a seventh sealing ring 15 is provided between the two to prevent leakage.

[0023] In summary, in this utility model, the gas reaches the interior of the GIS gas chamber 19 via the inflation device 18 and the aforementioned filter connector. Throughout the process, the gas passes through two filtration barriers: the filter core rod 6 and the filter screen 4. These two filtrations form a double insurance, ensuring that foreign objects cannot enter the gas chamber even if one fails. This effectively prevents foreign objects from entering the GIS gas chamber 19 while maintaining the inflation speed, improving the product quality of the GIS combined electrical appliance, and ensuring the reliability of the power grid operation.

[0024] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A high-flow-rate air filter connector for GIS, used to connect the GIS air chamber (19) and the air filling device (18); characterized in that, The inflation device (18) and the GIS air chamber (19) are connected through the main body structure, forming an inflation channel. The end of the main body structure is provided with an air nozzle mechanism that connects to the inflation device (18) and guides the inflation channel. A double filter mechanism is provided in the inflation channel.

2. The high-flow-rate air-filled filter connector for GIS according to claim 1, characterized in that, The main structure includes a filter cylinder (7), and air nozzles and connecting components that connect to the GIS air chamber (19) at both ends of the filter cylinder (7).

3. The high-flow-rate air-filled filter connector for GIS according to claim 2, characterized in that, The connecting assembly includes a filter cylinder side connector (3) located at one end of the filter cylinder (7), a chamber side connector (2) located at the other end of the filter cylinder side connector (3), and a GIS chamber docking nut (1) located at the other end of the chamber side connector (2). The GIS chamber docking nut (1) is connected to the inflation shut-off valve of the GIS chamber (19) and makes the inflation shut-off valve of the GIS chamber (19) open.

4. The high-flow-rate air-filled filter connector for GIS according to claim 3, characterized in that, The dual filtration mechanism includes a filter screen (4) disposed in the channel of the filter cylinder side connector (3) and a filter core rod (6) disposed at the end of the filter cylinder side connector (3). The filter core rod (6) is located inside the filter cylinder (7), and the end of the filter core rod (6) away from the filter cylinder side connector (3) is closed.

5. The high-flow-rate air-filled filter connector for GIS according to claim 4, characterized in that, A screw plug (5) is provided on the inner circumferential wall of the side connector (3) of the filter cylinder, and the two are connected by threads. A fourth sealing ring (12) is provided between the screw plug (5) and the filter screen (4).

6. The high-flow-rate air-filled filter connector for GIS according to claim 2, characterized in that, The air nozzle mechanism includes an air-filled side connector (8) located at the end of the filter cylinder (7) and connected to the air-filling device (18), and an air nozzle (17) located on the air-filled side connector (8); the end of the air-filled side connector (8) is inserted into the air-filling device (18), and in the air-filled state, the air nozzle (17) is opened and the air-filling channel is opened.

7. The high-flow-rate air-filled filter connector for GIS according to claim 6, characterized in that, The inflation side connector (8) is provided with a perforated baffle. The inflation nozzle (17) includes a positioning section and a valve core. The positioning section is inserted into the extension section of the inflation side connector (8). The extension section is connected to the inflation device (18). One end of the valve core is conical and fits and seals with the conical sealing surface in the positioning section. The other end of the valve core is a straight section and passes through the center hole of the perforated baffle. A return spring (16) is sleeved on the straight section of the valve core. When the inflation device (18) is in the inflation state, the valve core of the inflation nozzle (17) is pushed open, and the inflation channel is opened.

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