Novel transformer substation SF6 electrical equipment inflation device

Abstract

The utility model provides a novel transformer station SF6 electrical equipment gas charging device, which relates to the technical field of SF6 electrical equipment, and comprises a mounting rack, the inner wall of the mounting rack is fixedly connected with a gas charging assembly, the output end of the gas charging assembly is fixedly connected with a rotating assembly, one end of the rotating assembly is fixedly connected with a buffer gas inlet assembly, and the buffer gas inlet assembly comprises a tank body. A floating tank is arranged in the tank body, and a ball valve is fixedly connected to the interior of the floating tank, so that during inflation operation, air inlet pressure can be effectively buffered and adjusted, air is prevented from entering the equipment at too high speed and pressure, mechanical stress on internal elements of the equipment is reduced, structural damage to the equipment is prevented, and the service life of the equipment is prolonged. And meanwhile, the overall operation of the equipment is maintained by automatically adjusting the gas flow rate and pressure, so that the mechanical stress and potential damage to the equipment caused by too fast entering of the gas are effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of SF6 electrical equipment, in particular to a novel gas filling device for SF6 electrical equipment in a substation. Background Art

[0002] The SF6 electrical equipment gas filling device is mainly used for filling and maintaining sulfur hexafluoride gas in high-voltage electrical equipment in the power industry. SF6 gas has excellent insulation and arc extinguishing characteristics and is widely used in power equipment such as gas-insulated switchgear and high-voltage circuit breakers.

[0003] However, in actual use, there are still the following deficiencies. For example, during the gas filling operation, if the direct gas inlet method is adopted, the inlet pressure cannot be properly buffered and regulated. In this case, the gas may enter the equipment interior at too high a speed and pressure. Such a fast gas filling speed may exert great mechanical stress on each component inside the equipment and may even cause structural damage to the equipment, not only shortening the service life of the equipment but also having a negative impact on its safety performance, thus affecting the overall operation stability of the equipment.

[0004] Therefore, the utility model provides a novel gas filling device for SF6 electrical equipment in a substation. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the deficiencies existing in the prior art and provide a novel gas filling device for SF6 electrical equipment in a substation.

[0006] To achieve the above purpose, the utility model adopts the following technical solution: A novel gas filling device for SF6 electrical equipment in a substation, including a mounting frame, an inner wall of the mounting frame is fixedly connected with a gas filling assembly, an output end of the gas filling assembly is fixedly connected with a rotating assembly, and one end of the rotating assembly is fixedly connected with a buffer air inlet assembly;

[0007] The buffer air inlet assembly includes a tank body, a floating tank is arranged inside the tank body, a ball valve is fixedly connected inside the floating tank, a floating ball is arranged inside the floating tank, a slow air inlet column is fixedly connected to a bottom end inner wall of the floating tank, and a fast air inlet column is fixedly connected to a top end of the floating tank.

[0008] As a preferred implementation, the rotating assembly includes a first rotary joint, one end of the first rotary joint is rotatably connected with an air inlet block, a top end of the tank body is fixedly connected with an air outlet block, a spring is fixedly connected to a bottom end inner wall of the tank body, and one end of the air outlet block is rotatably connected with a second rotary joint.

[0009] The technical effects of adopting the above technical solution are as follows: during the inflation process, initial buffering can be carried out through the slow inflation column first, and then rapid inflation can be carried out through the fast inflation column, thereby realizing staged control of the inflation speed and ensuring the smoothness of the inflation process.

[0010] As a preferred implementation manner, the inflation assembly includes a gas compressor, the bottom end of the gas compressor is installed on the mounting rack, the output end of the gas compressor is fixedly connected with a gas storage tank, and the output end of the gas storage tank is fixedly connected with a gas pipeline.

[0011] The technical effects of adopting the above technical solution are as follows: the SF6 gas is compressed by the gas compressor and stored in the gas storage tank, and then transported to the rotating assembly and the buffer intake assembly through the gas pipeline, ensuring the stable supply and continuity of the gas.

[0012] As a preferred implementation manner, the end of the spring away from the tank body is fixedly connected to the slow inflation column.

[0013] The technical effects of adopting the above technical solution are as follows: the existence of the spring can provide an upward force for the floating tank, enabling the floating tank to move up and down inside the tank body with the change of gas pressure.

[0014] As a preferred implementation manner, one end of the rotary joint one is fixedly connected to the gas pipeline.

[0015] The technical effects of adopting the above technical solution are as follows: it is convenient for the inflation device to rotate in different directions.

[0016] As a preferred implementation manner, the outer side of the fast inflation column is slidably connected to the inner wall of the air outlet block.

[0017] The technical effects of adopting the above technical solution are as follows: enabling the fast inflation column to quickly respond to the inflation demand and improving the inflation efficiency.

[0018] As a preferred implementation manner, the outer side of the floating ball is engaged with the ball valve.

[0019] The technical effects of adopting the above technical solution are as follows: through the cooperation of the floating ball and the ball valve, precise control of the gas flow rate can be achieved.

[0020] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0021] The utility model realizes effective buffering and regulating of the intake pressure during the inflation operation by setting a buffer intake assembly and a rotating assembly structure. When the floating tank moves along with the gas flow to the fast intake column, and the gas enters the tank body through the gas pipeline, the floating tank drives the fast intake column to move towards the air outlet block. The holes slow down the air flow speed, and the air in the floating tank slowly enters. The floating ball disengages from the ball valve, ensuring that the floating tank moves downward when the pressure increases and the fast intake column disengages from the air outlet block. The design allows for the reversal of the intake block and the air outlet block to release excess air when the gas pressure is too high, avoiding jamming, and the spring tension resets the system when there is no pressure. This design effectively buffers and regulates the intake pressure during the inflation operation, prevents the gas from entering the equipment interior at too high a speed and pressure, thereby reducing the mechanical stress on the internal components of the equipment and preventing structural damage to the equipment. At the same time, by automatically adjusting the gas flow rate and pressure, the overall operation of the equipment is maintained, effectively avoiding the mechanical stress and potential damage caused by the too-fast entry of gas into the equipment. Description of the Drawings

[0022] Figure 1 Fig. 6 is a perspective view of a novel SF6 electrical equipment inflation device for a substation provided by the utility model;

[0023] Figure 2 Fig. 10 is a schematic structural diagram of the inflation assembly of a novel SF6 electrical equipment inflation device for a substation provided by the utility model;

[0024] Figure 3 Fig. 14 is a schematic cross-sectional view of the tank body structure of a novel SF6 electrical equipment inflation device for a substation provided by the utility model;

[0025] Figure 4 Fig. 18 is a schematic cross-sectional view of the floating tank structure of a novel SF6 electrical equipment inflation device for a substation provided by the utility model.

[0026] Legend:

[0027] 1. Mounting frame;

[0028] 2. Inflation assembly; 21. Gas compressor; 22. Gas storage tank; 23. Gas pipeline;

[0029] 3. Rotating assembly; 31. First rotary joint; 32. Intake block; 33. Air outlet block; 34. Spring; 35. Second rotary joint;

[0030] 4. Buffer intake assembly; 41. Tank body; 42. Floating tank; 43. Ball valve; 44. Floating ball; 45. Slow intake column; 46. Fast intake column. Detailed Implementation Manner

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0032] As Figure 1 - Figure 4 shown, this embodiment provides a technical solution: a new type of SF6 electrical equipment inflation device for a substation, including a mounting frame 1. An inflation component 2 is fixedly connected to the inner wall of the mounting frame 1. The output end of the inflation component 2 is fixedly connected to a rotating component 3. One end of the rotating component 3 is fixedly connected to a buffer air intake component 4;

[0033] The buffer air intake component 4 includes a tank body 41. A floating tank 42 is arranged inside the tank body 41. A ball valve 43 is fixedly connected inside the floating tank 42. A floating ball 44 is arranged inside the floating tank 42. The outer side of the floating ball 44 is clamped on the ball valve 43. A slow air intake column 45 is fixedly connected to the bottom end of the inner wall of the floating tank 42. A fast air intake column 46 is fixedly connected to the top end of the floating tank 42. The tank body 41 is the main container of the buffer air intake component 4, responsible for containing gas and providing a buffer space, allowing the gas to adjust the pressure and speed inside the tank body 41. The floating tank 42 is located inside the tank body 41. The floating tank 42 can float according to the change of gas pressure, playing a role in adjusting the gas flow rate, helping to balance the air intake speed. The ball valve 43 is a key control element installed inside the floating tank 42, used to control the flow of gas. When the floating ball 44 rises or falls, the ball valve 43 will open and close, controlling the gas to enter and exit. The floating ball 44 is used in cooperation with the ball valve 43. The floating ball 44 moves up and down with the entry of gas or the change of air pressure inside the tank body 41, triggering the opening and closing of the ball valve 43, automatically adjusting the air intake process to prevent the gas from entering too fast. The slow air intake column 45 is used for low-speed air intake. When it is necessary to slowly adjust the gas pressure, the gas enters the tank body 41 through the slow air intake column 45, ensuring that the gas gradually increases compared with the fast air intake column 46. The air intake speed of the fast air intake column 46 is faster than that of the slow air intake column 45, so that when the gas flows through the tank body 41, it is slowed down, avoiding sudden pressure changes.

[0034] Furthermore, as Figure 1 、 Figure 3 And Figure 4As shown: In this solution, the rotating assembly 3 includes a first rotary joint 31. One end of the first rotary joint 31 is rotatably connected to an air inlet block 32. The top end of the tank body 41 is fixedly connected to an air outlet block 33. The outer side of the fast air inlet column 46 is slidably connected to the inner wall of the air outlet block 33. The bottom end of the inner wall of the tank body 41 is fixedly connected to a spring 34. The end of the spring 34 away from the tank body 41 is fixedly connected to the slow air inlet column 45. One end of the air outlet block 33 is rotatably connected to a second rotary joint 35. The first rotary joint 31 is the rotary joint connecting the air inlet block 32 and the entire inflation device, enabling the air inlet block 32 to rotate in different directions. The air inlet block 32 is the main inlet of the gas inflow device, connected to an external gas source. With the assistance of the first rotary joint 31, the air inlet block 32 can rotate, allowing the angle of gas inlet to be adjusted. The air outlet block 33 is the channel for gas to be output from the tank body 41, used to guide the gas from inside the tank body 41 to the equipment. By being slidably connected to the fast air inlet column 46, it allows the fast air inlet column 46 to quickly pass through this channel to complete an efficient inflation process when necessary. The fast air inlet column 46 enables the fast air inlet column 46 to move freely according to the inflation requirements. When rapid inflation is needed, it ensures that gas can quickly enter to meet the inflation requirements of the equipment for buffering. The function of the spring 34 is to adjust the position of the floating tank 42. When the air inlet block 32 and the air outlet block 33 are rotated in opposite directions, the gravity of the internal structure of the gas in the floating tank 42 is greater than the pressure in the tank body 41, which will cause the fast air inlet column 46 to slide into the air outlet block 33 to avoid blocking during normal air supply. The cooperative design of the ball valve 43 and the floating ball 44 enables the gas to automatically open and close when the pressure increases or decreases. The slow air inlet column 45 serves as a low-speed air inlet channel. When rapid inflation is not required, the gas slowly enters the floating tank 42 through the slow air inlet column 45, slowly increasing the buoyancy in the floating tank 42. The second rotary joint 35 enables the entire air outlet block 33 to be rotated and adjusted in different directions, similar to the first rotary joint 31.

[0035] Furthermore, as Figure 1 - Figure 2 shown: The inflation assembly 2 includes a gas compressor 21. The bottom end of the gas compressor 21 is installed on the mounting frame 1. The output end of the gas compressor 21 is fixedly connected to a gas storage tank 22. The output end of the gas storage tank 22 is fixedly connected to an air delivery pipe 23. One end of the first rotary joint 31 is fixedly connected to the air delivery pipe 23. As the core part of the device, the inflation assembly 2 is designed by fully considering the performance of the gas compressor 21 and the capacity of the gas storage tank 22 to ensure that stable and sufficient SF6 gas can be provided. The gas compressor 21 adopts advanced compression technology, which not only improves the compression efficiency of the gas but also reduces the energy consumption. The gas storage tank 22 has a sufficient volume to meet the large-scale inflation requirements. The air delivery pipe 23 is made of high-pressure-resistant material, ensuring the safety and reliability during the gas delivery process.

[0036] Working principle:

[0037] As Figure 1 - Figure 4 shown below:

[0038] When in use: when gas flows from the gas pipeline 23 to the intake block 32, the gas will first flow through the tank body 41 towards the outlet block 33. In order to reduce the rapid flow of the gas, the floating tank 42 will drive the fast intake column 46 on the floating tank 42 to flow towards the outlet block 33 under the flow of the gas. Since the holes on the fast intake column 46 will reduce the air flow speed, secondly, when the gas is flowing, the air inside the floating tank 42 slowly enters the floating tank 42 under the interference of the slow intake column 45. At this time, the floating ball 44 will disengage from the engagement with the ball valve 43. And when the pressure inside the floating tank 42 increases, since the density of the buffer intake component 4 accelerating the gas is greater than the density in the tank body 41, it will move towards the bottom, causing the fast intake column 46 to disengage from the outlet block 33. At this time, the positions of the rotating intake block 32 and the outlet block 33 will be reversed, and the excess air inside the floating tank 42 will also be discharged. And under pressure, the fast intake column 46 will abut against the groove of the outlet block 33 to prevent it from engaging with the air holes on the outlet block 33, and when there is no pressure, it can return to its original position under the pulling force of the spring 34.

[0039] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A new type of SF6 electrical equipment inflation device for a substation, comprising a mounting frame (1), and an inflation assembly (2) fixedly connected to the inner wall of the mounting frame (1), characterized in that, The output end of the inflation assembly (2) is fixedly connected to a rotation assembly (3), and one end of the rotation assembly (3) is fixedly connected to a buffer air inlet assembly (4). The buffer air inlet assembly (4) includes a tank body (41). A floating tank (42) is arranged inside the tank body (41). A ball valve (43) is fixedly connected inside the floating tank (42). A floating ball (44) is arranged inside the floating tank (42). A slow air inlet column (45) is fixedly connected to the bottom end of the inner wall of the floating tank (42). A fast air inlet column (46) is fixedly connected to the top end of the floating tank (42).

2. A novel SF6 electrical equipment inflation device for a substation according to claim 1, characterized in that: The rotation assembly (3) includes a first rotary joint (31). One end of the first rotary joint (31) is rotatably connected to an air inlet block (32). The top end of the tank body (41) is fixedly connected to an air outlet block (33). A spring (34) is fixedly connected to the bottom end of the inner wall of the tank body (41). One end of the air outlet block (33) is rotatably connected to a second rotary joint (35).

3. A novel SF6 electrical equipment gas filling device for a substation according to claim 2, characterized in that: The inflation assembly (2) includes a gas compressor (21). The bottom end of the gas compressor (21) is installed on the mounting frame (1). The output end of the gas compressor (21) is fixedly connected to a gas storage tank (22). The output end of the gas storage tank (22) is fixedly connected to an air delivery pipe (23).

4. A novel SF6 electrical equipment gas filling device for a substation according to claim 2, characterized in that: One end of the spring (34) away from the tank body (41) is fixedly connected to the slow air inlet column (45).

5. A novel SF6 electrical equipment gas filling device for a substation according to claim 3, characterized in that: One end of the first rotary joint (31) is fixedly connected to the air delivery pipe (23).

6. A novel SF6 electrical equipment gas filling device for a substation according to claim 2, characterized in that: The outer side of the fast air inlet column (46) is slidably connected to the inner wall of the air outlet block (33).

7. A novel SF6 electrical equipment gas filling device for a substation according to claim 1, characterized in that: The outer side of the floating ball (44) is engaged with the ball valve (43).

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