12kv environment-friendly gas insulated ring net cabinet

Abstract

The application relates to the technical field of ring network cabinets, and discloses a 12kV environmentally-friendly gas insulated ring network cabinet, which comprises a network cabinet, an operation panel is fixedly connected to the side wall of the network cabinet, and circuit instruments are fixedly connected to the inner wall of the network cabinet. In view of the height difference between two network cabinets, a limiting mechanism is arranged in the equipment. When the height of the two network cabinets is different, the top or bottom of the outer wall of the rubber hard pad will bear an excessive pressure. When the rubber hard pad is pressed, the arc-shaped soft pad will be deformed due to the soft material of the arc-shaped soft pad, and the outer wall plane of the rubber hard pad will be tightly attached to the inner wall of the connecting cylinder II. The deformation of the arc-shaped soft pad replaces the rubber hard pad, so that the outer wall of the rubber hard pad can still be completely attached to the inner wall of the connecting cylinder II even if there is a height difference, preventing the rubber hard pad from being not tightly attached to the connecting cylinder II due to the height difference, and preventing the phenomenon of high-pressure leakage.

Description

Technical Field

[0001] This invention relates to the field of ring main unit technology, specifically a 12kV environmentally friendly gas-insulated ring main unit. Background Technology

[0002] The 12kV environmentally friendly gas-insulated ring main unit mainly consists of a gas box, cabinet, instrument room, and primary components. The gas box contains circuit breakers, switches, and other mechanisms. The switches are controlled by spring operating mechanisms installed on the outer wall of the gas box. Bushings for busbar inlet and outlet are installed on the outer wall of the gas box. Environmentally friendly gas-insulated ring main units are mostly modular designs. Adjacent ring main units are connected to a new functional unit gas box through standardized mechanical and electrical interfaces, ensuring that two independent gas boxes are combined into a common gas chamber and a completely sealed system.

[0003] However, in practical applications, due to factors such as uneven ground, there are slight differences in the height of adjacent ring main units. This results in a height difference between the electrical interfaces at both ends. When installing the side expansion device, due to the height difference at both ends, the double-lip seal ring on the outside of the side expansion device is formed in an inclined state inside the electrical interface. When the side expansion device is tilted downward, the bottom of the double-lip seal ring will bear greater pressure, resulting in higher sealing performance, while the top is in a relatively relaxed state with lower sealing performance. The different sealing performance of the same double-lip seal ring will greatly reduce the sealing performance of the double-lip seal ring. To address the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a 12kV environmentally friendly gas-insulated ring main unit, including a main unit, an operation panel fixedly connected to the side wall of the main unit, circuit instruments fixedly connected to the inner wall of the main unit, and three connection ports fixedly connected to the side wall of the main unit, and further including:

[0005] The fixing mechanism is fixedly installed on the side wall of the network cabinet;

[0006] The auxiliary mechanism is fixedly installed on the side wall of the fixed mechanism;

[0007] The limiting mechanism is fixedly installed on the outer wall of the auxiliary mechanism;

[0008] Before use, the two network cabinets need to be fixed in the required positions, and then the fixing mechanism is inserted into the connection port.

[0009] Preferably, the fixing mechanism includes:

[0010] The mounting components are fixedly installed on the side wall of the cabinet.

[0011] Interconnection components are fitted and installed on the inner wall of the mounting components;

[0012] There are three installation components, and the three installation components and the connection port are concentrically set.

[0013] Preferably, the auxiliary mechanism includes:

[0014] The flow component is fixedly installed on the outer wall of the interconnection component;

[0015] Contact components are fixedly installed on the outer wall of the interconnection components;

[0016] After the equipment is installed, the high-pressure gas inside the cabinet will be transferred to another cabinet through the circulation component.

[0017] Preferably, the limiting mechanism includes:

[0018] A sealing component is fixedly installed on the inner wall of the contact component.

[0019] The snap-fit ​​assembly is fixedly installed on the outer wall of the sealing assembly;

[0020] When high-pressure gas acts on the sealing component, the sealing component will deform.

[0021] Preferably, the installation assembly includes three fixing plates fixedly connected to the side wall of the cabinet, and connecting cylinders two are fixedly connected to the side walls of the three fixing plates;

[0022] Among them, the central axis of the connecting cylinder 2 overlaps with the central axis of the connecting port, and the two are at the same height. High-pressure gas can be transmitted to the inner wall of another cabinet through the connecting port and the interconnection component.

[0023] Preferably, the interconnection assembly includes a connecting cylinder one that is fitted to the inner wall of the connecting cylinder two, and a rubber pad is fixedly connected to the outer wall of the connecting cylinder one;

[0024] During installation, workers need to insert connecting cylinder one into connecting cylinder two at both ends.

[0025] Preferably, the flow assembly includes a positioning plate fixedly connected to the inner wall of the connecting cylinder, and a through hole is provided on the side wall of the positioning plate;

[0026] In this process, after the high-pressure gas enters the interior of the connecting cylinder, it enters the interior of another cabinet through the through hole.

[0027] Preferably, the contact assembly includes a contact ring fixedly connected to the outer wall of the connecting cylinder, and a mounting ring fixedly connected to the side wall of the connecting cylinder.

[0028] After installation, the installation ring will be tightly attached to the inner wall of the connection port to ensure that the high-pressure gas inside the connection port can only be transmitted to the other cabinet through the connection cylinder.

[0029] Preferably, the sealing assembly includes a mounting pad fixedly connected to the outer wall of the contact ring, an arc-shaped soft pad fixedly connected to the top of the mounting pad, and a rubber hard pad fixedly connected to the end of the arc-shaped soft pad away from the mounting pad.

[0030] Among them, the material of the curved soft pad is softer than that of the hard rubber pad. When external pressure is applied to the outer wall of the hard rubber pad, the curved soft pad will deform first.

[0031] Preferably, the snap-fit ​​assembly includes a force-bearing plate fixedly connected to the side wall of the arc-shaped cushion, and a metal reinforcing rib fixedly connected to the outer wall of the arc-shaped cushion;

[0032] When the curved soft pad is deformed by high-pressure gas, the curved soft pad will transmit the force to the rubber hard pad through the metal reinforcing rib, forcing the rubber hard pad to stick tightly to the inner wall of the connecting cylinder.

[0033] The present invention has the following beneficial effects:

[0034] (1) This invention addresses the problem of height difference between two wire mesh cabinets by incorporating a limiting mechanism inside the device. When the heights of the two wire mesh cabinets differ, the top or bottom of the outer wall of the rubber hard pad will bear excessive pressure, such as... Figure 9 As shown, when the rubber hard pad is compressed, the curved soft pad will deform due to its softer material. The outer wall of the rubber hard pad will then be tightly pressed against the inner wall of the connecting cylinder 2. By using the above components, the deformation of the curved soft pad replaces the rubber hard pad, ensuring that even with height differences, the outer wall of the rubber hard pad remains completely and tightly pressed against the inner wall of the connecting cylinder 2. This prevents high-pressure leakage caused by the rubber hard pad not being tightly fitted to the connecting cylinder 2 due to height differences.

[0035] (2) This invention utilizes the characteristic of the rubber hard pad tightly adhering to the inner wall of the connecting cylinder two. When the high-pressure gas inside the cabinet flows through the interconnection component, the pressure generated by the high-pressure gas will act on the arc-shaped soft pad, such as... Figure 9 As shown, the arc-shaped soft pad will expand outward along path H under the influence of high-pressure gas. Since the arc-shaped soft pad is a complete circle, when the entire arc-shaped soft pad is compressed and expands outward, the part of the arc-shaped soft pad that was originally twisted due to the height difference will also be pushed outward under the influence of the expansion force. Through the application of the above components, while preventing the same arc-shaped soft pad from being excessively twisted due to the height difference, the arc-shaped soft pad will also generate an outward thrust along path J. This thrust will force the rubber hard pad to be more tightly attached to the inner wall of the connecting cylinder two.

[0036] (3) The present invention utilizes the deformation characteristics of the above-mentioned arc-shaped soft pad under pressure and sets a buckle assembly inside the equipment. The material of the force plate is hard rubber. When the arc-shaped soft pad expands, it will reduce the expansion efficiency of the inner ring of the arc-shaped soft pad. When the arc-shaped soft pad expands outward, the outer ring of the arc-shaped soft pad will be pressed around K, causing the upper part of the arc-shaped soft pad to rotate outward. However, due to the restriction of the metal reinforcing rib, the outer ring of the arc-shaped soft pad will have a clockwise flipping tendency. At this time, the rubber hard pad is tightly attached to the inner wall of the connecting cylinder two, restricting the inner wall of the arc-shaped soft pad. The flipping pressure will force the rubber hard pad to fit more closely to the inner wall of the connecting cylinder two. Through the application of the above-mentioned components, the sealing performance between the rubber hard pad and the connecting cylinder two is effectively enhanced.

[0037] (4) This invention utilizes the characteristic of high-pressure gas interconnection within adjacent cabinets to mirror the limiting mechanism on the same connecting cylinder, such as... Figure 6 As shown, when the left side of the connecting cylinder is subjected to high pressure, a [something] will be generated. Figure 6 The sliding trend of the H-path in the middle, while the other end of the connecting cylinder extends deep into the cabinet, also bearing a... Figure 6 The thrust of path P is generated by the high-pressure gas inside the two cabinets being interconnected. Therefore, the thrust generated by P and H is the same but in opposite directions, thus canceling each other out. The application of the above components prevents the connecting cylinder from sliding outward due to the external thrust of the high-pressure gas, which would affect the airtightness between the subsequent cabinets. Attached Figure Description

[0038] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0040] Figure 2 This is a front sectional view of the overall structure of the present invention;

[0041] Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention from the rear.

[0042] Figure 4 This is a cross-sectional view of the mounting components of the present invention;

[0043] Figure 5 This is a schematic diagram of the contact component of the present invention;

[0044] Figure 6 This is a schematic diagram of the interconnection component of the present invention;

[0045] Figure 7 This is a cross-sectional schematic diagram of the flow component of the present invention;

[0046] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle;

[0047] Figure 9 This is a schematic cross-sectional view of the sealing component of the present invention.

[0048] The attached diagram lists the components represented by each number as follows:

[0049] In the diagram: 1. Fixing mechanism; 11. Mounting component; 12. Interconnection component; 13. Cabinet; 14. Operation panel; 15. Circuit instrument; 16. Connection port; 111. Fixing plate; 112. Connecting cylinder two; 121. Rubber pad; 122. Connecting cylinder one; 2. Auxiliary mechanism; 21. Flow component; 22. Contact component; 211. Positioning plate; 212. Through hole; 221. Contact ring; 222. Mounting ring; 3. Restriction mechanism; 31. Sealing component; 32. Buckle component; 311. Mounting pad; 312. Arc-shaped soft pad; 313. Rubber hard pad; 321. Metal reinforcing rib; 322. Force plate. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1, please refer to Figure 1 - Figure 7 This invention relates to a 12kV environmentally friendly gas-insulated ring main unit, comprising a main unit 13, an operation panel 14 fixedly connected to the side wall of the main unit 13, circuit instruments 15 fixedly connected to the inner wall of the main unit 13, and three connection ports 16 fixedly connected to the side wall of the main unit 13. It also includes:

[0052] Fixing mechanism 1 is fixedly installed on the side wall of the wire mesh cabinet 13;

[0053] Auxiliary mechanism 2 is fixedly installed on the side wall of fixed mechanism 1;

[0054] The limiting mechanism 3 is fixedly installed on the outer wall of the auxiliary mechanism 2;

[0055] Before use, install the two network cabinets 13 tightly together and ensure that the interconnection component 12 is inserted into the connecting cylinder 112. Then fill the network cabinet 13 with environmentally friendly gas and the equipment is officially put into use.

[0056] Fixed mechanism 1 includes:

[0057] Mounting component 11 is fixedly installed on the side wall of the wire mesh cabinet 13;

[0058] Interconnection component 12 is fitted and disposed on the inner wall of mounting component 11;

[0059] There are three installation components 11, and the three installation components 11 are concentrically arranged with the connection port 16.

[0060] Auxiliary mechanism 2 includes:

[0061] The flow component 21 is fixedly installed on the outer wall of the interconnection component 12;

[0062] Contact component 22 is fixedly disposed on the outer wall of interconnection component 12;

[0063] After the equipment is installed, the high-pressure gas inside the cabinet 13 will be transferred to another cabinet 13 through the circulation component 21.

[0064] Restricted agency 3 includes:

[0065] The sealing component 31 is fixedly installed on the inner wall of the contact component 22;

[0066] The snap-fit ​​assembly 32 is fixedly disposed on the outer wall of the sealing assembly 31;

[0067] When high-pressure gas acts on the sealing component 31, the sealing component 31 will deform.

[0068] Example 2, please refer to Figure 4 - Figure 9 The present invention is a 12kV environmentally friendly gas-insulated ring main unit. Based on Example 1, the installation component 11 includes three fixing plates 111 fixedly connected to the side wall of the ring main unit 13, and connecting cylinders 112 are fixedly connected to the side wall of the three fixing plates 111.

[0069] Among them, the central axis of the connecting cylinder 112 overlaps with the central axis of the connecting port 16, and the two are at the same height. High-pressure gas can be transmitted to the inner wall of another cabinet 13 through the connecting port 16 and the interconnection component 12.

[0070] The interconnection component 12 includes a connecting cylinder 122 that fits against the inner wall of the connecting cylinder 112, and a rubber pad 121 is fixedly connected to the outer wall of the connecting cylinder 122.

[0071] Taking advantage of the high-pressure gas exchange feature within adjacent cabinets 13, the limiting mechanism 3 on the same connecting cylinder 122 is mirrored, such as... Figure 6 As shown, when the left side of connecting cylinder 122 is subjected to high pressure, a [missing information] will be generated. Figure 6 The sliding trend of the H-path, while the other end of the connecting cylinder 122 extends into the interior of the wire mesh cabinet 13, also bearing a... Figure 6 The thrust of path P is generated by the high-pressure gas inside the two cabinets 13, which are in a state of mutual communication. Therefore, the thrust generated by P and H is the same but in opposite directions. Thus, the thrust cancels each other out. Through the application of the above components, the external thrust of the high-pressure gas is prevented from causing the connecting cylinder 122 to slide outward and affecting the airtightness between the subsequent cabinets 13.

[0072] The circulation component 21 includes a positioning plate 211 fixedly connected to the inner wall of the connecting cylinder 122, and a through hole 212 is provided on the side wall of the positioning plate 211.

[0073] After entering the interior of the connecting cylinder 122, the high-pressure gas enters the interior of another wire mesh cabinet 13 through the through hole 212;

[0074] Among them, the limiting mechanism 3 is mirrored on both sides of the connecting cylinder 122.

[0075] The contact assembly 22 includes a contact ring 221 fixedly connected to the outer wall of the connecting cylinder 122, and an mounting ring 222 fixedly connected to the side wall of the connecting cylinder 122.

[0076] After installation, the installation ring 222 will be tightly attached to the inner wall of the connection port 16, ensuring that the high-pressure gas inside the connection port 16 can only be transmitted to the other cabinet 13 through the connecting tube 122.

[0077] The sealing assembly 31 includes a mounting pad 311 fixedly connected to the outer wall of the contact ring 221. An arc-shaped soft pad 312 is fixedly connected to the top of the mounting pad 311, and a rubber hard pad 313 is fixedly connected to the end of the arc-shaped soft pad 312 away from the mounting pad 311.

[0078] To address the height difference between the two network cabinets 13, a limiting mechanism 3 is installed inside the equipment. When the heights of the two network cabinets 13 differ, the top or bottom of the outer wall of the rubber hard pad 313 will bear excessive pressure, such as... Figure 9As shown, when the rubber hard pad 313 is compressed, the curved soft pad 312 will deform under pressure due to its softer material. The outer wall of the rubber hard pad 313 will then be tightly pressed against the inner wall of the connecting cylinder 2 112. Through the application of the above components, the deformation of the curved soft pad 312 replaces the rubber hard pad 313, ensuring that even when there is a height difference, the outer wall of the rubber hard pad 313 can still be completely and tightly pressed against the inner wall of the connecting cylinder 2 112. This prevents the rubber hard pad 313 from not being tightly pressed against the connecting cylinder 2 112 due to the height difference, thus preventing high pressure leakage.

[0079] The buckle assembly 32 includes a force-bearing plate 322 fixedly connected to the side wall of the arc-shaped soft pad 312, and a metal reinforcing rib 321 fixedly connected to the outer wall of the arc-shaped soft pad 312.

[0080] Taking advantage of the fact that the rubber hard pad 313 is tightly attached to the inner wall of the connecting cylinder 112, when the high-pressure gas inside the wire mesh cabinet 13 flows through the interconnection component 12, the pressure generated by the high-pressure gas will act on the arc-shaped soft pad 312, such as... Figure 9 As shown, the arc-shaped soft pad 312 will expand outward along the path H under the influence of high-pressure gas. Since the arc-shaped soft pad 312 is a complete circle, when the entire arc-shaped soft pad 312 is compressed and expands outward, the part of the arc-shaped soft pad 312 that was originally twisted due to the height difference will also be stretched outward under the influence of the expansion force. Through the application of the above components, while preventing the same arc-shaped soft pad 312 from being excessively twisted due to the height difference, the arc-shaped soft pad 312 will also generate an outward thrust along the path J. This thrust will force the rubber hard pad 313 to be more tightly attached to the inner wall of the connecting cylinder 112.

[0081] One specific application of this embodiment is as follows: Before use, the two network cabinets 13 are installed together tightly and the interconnection component 12 is inserted into the connecting cylinder 112. Then, environmentally friendly gas is filled into the network cabinet 13 and the equipment is put into use.

[0082] To address the height difference between the two network cabinets 13, a limiting mechanism 3 is installed inside the equipment. When the heights of the two network cabinets 13 differ, the top or bottom of the outer wall of the rubber hard pad 313 will bear excessive pressure, such as... Figure 9 As shown, when the rubber hard pad 313 is compressed, the curved soft pad 312 will deform under pressure due to its softer material. The outer wall of the rubber hard pad 313 will then be tightly pressed against the inner wall of the connecting cylinder 2 112. Through the application of the above components, the deformation of the curved soft pad 312 replaces the rubber hard pad 313, ensuring that even when there is a height difference, the outer wall of the rubber hard pad 313 can still be completely and tightly pressed against the inner wall of the connecting cylinder 2 112. This prevents the rubber hard pad 313 from not being tightly pressed against the connecting cylinder 2 112 due to the height difference, thus preventing high pressure leakage.

[0083] Taking advantage of the fact that the rubber hard pad 313 is tightly attached to the inner wall of the connecting cylinder 112, when the high-pressure gas inside the wire mesh cabinet 13 flows through the interconnection component 12, the pressure generated by the high-pressure gas will act on the arc-shaped soft pad 312, such as... Figure 9 As shown, the arc-shaped soft pad 312 will expand outward along path H under the influence of high-pressure gas. Since the arc-shaped soft pad 312 is a complete circle, when the entire arc-shaped soft pad 312 is compressed and expands outward, the part of the arc-shaped soft pad 312 that was originally twisted due to the height difference will also be pushed outward under the influence of the expansion force. Through the application of the above components, while preventing the same arc-shaped soft pad 312 from being excessively twisted due to the height difference, the arc-shaped soft pad 312 will also generate an outward thrust along path J. This thrust will force the rubber hard pad 313 to be more tightly attached to the inner wall of the connecting cylinder 112.

[0084] Utilizing the deformation characteristic of the aforementioned arc-shaped soft pad 312 under pressure, a snap-fit ​​assembly 32 is installed inside the equipment. The force plate 322 is made of hard rubber. When the arc-shaped soft pad 312 expands, it reduces the expansion efficiency of the inner ring of the arc-shaped soft pad 312. When the arc-shaped soft pad 312 expands outward, the outer ring of the arc-shaped soft pad 312 will be compressed around K, causing the upper part of the arc-shaped soft pad 312 to rotate outward. However, due to the restriction of the metal reinforcing rib 321, the outer ring of the arc-shaped soft pad 312 will have a clockwise flipping tendency. At this time, the rubber hard pad 313 is tightly attached to the inner wall of the connecting cylinder 2 112, restricting the inner wall of the arc-shaped soft pad 312. The flipping pressure will force the rubber hard pad 313 to fit more closely to the inner wall of the connecting cylinder 2 112. Through the application of the above-mentioned components, the sealing performance between the rubber hard pad 313 and the connecting cylinder 2 112 is effectively enhanced.

[0085] Taking advantage of the high-pressure gas exchange feature within adjacent cabinets 13, the limiting mechanism 3 on the same connecting cylinder 122 is mirrored, such as... Figure 6 As shown, when the left side of connecting cylinder 122 is subjected to high pressure, a [missing information] will be generated. Figure 6 The sliding trend of the H-path, while the other end of the connecting cylinder 122 extends into the interior of the wire mesh cabinet 13, also bearing a... Figure 6 The thrust of path P is generated by the high-pressure gas inside the two cabinets 13, which are in a state of mutual communication. Therefore, the thrust generated by P and H is the same but in opposite directions. Thus, the thrust cancels each other out. Through the application of the above components, the external thrust of the high-pressure gas is prevented from causing the connecting cylinder 122 to slide outward and affecting the airtightness between the subsequent cabinets 13.

[0086] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A 12kV environmentally friendly gas-insulated ring main unit, comprising a main unit, an operation panel fixedly connected to the side wall of the main unit, circuit instruments fixedly connected to the inner wall of the main unit, and three connection ports fixedly connected to the side wall of the main unit, characterized in that, Also includes: A fixing mechanism is fixedly installed on the side wall of the wire mesh cabinet; An auxiliary mechanism is fixedly installed on the side wall of the fixed mechanism; A limiting mechanism is fixedly installed on the outer wall of the auxiliary mechanism; Before use, the two network cabinets need to be fixed in the required positions, and then the fixing mechanism is inserted into the connection port. The fixing mechanism includes: The mounting components are fixedly installed on the side wall of the cabinet; An interconnection component is fitted onto the inner wall of the mounting component; The number of installation components is three, and the three installation components and the connection port are concentrically set; The auxiliary mechanism includes: A flow component, wherein the flow component is fixedly disposed on the inner wall of the interconnection component; A contact component, which is fixedly disposed on the outer wall of the interconnection component; After the equipment is installed, the high-pressure gas inside the cabinet will be transferred to another cabinet through the circulation component. The restrictive mechanism includes: A blocking assembly, wherein the blocking assembly is fixedly disposed on the outer wall of the contact assembly; A snap-fit ​​assembly, wherein the snap-fit ​​assembly is fixedly disposed on the outer wall of the sealing assembly; When high-pressure gas acts on the sealing component, the sealing component will deform. The installation assembly includes three fixing plates fixedly connected to the side wall of the cabinet, and connecting cylinders two are fixedly connected to the side walls of the three fixing plates. The interconnection assembly includes connecting cylinder one that fits into the inner wall of connecting cylinder two. The contact assembly includes a contact ring that is fixedly connected to an outer wall of the connecting cylinder; The sealing assembly includes a mounting pad fixedly connected to the outer wall of the contact ring, an arc-shaped soft pad fixedly connected to the top of the mounting pad, and a rubber hard pad fixedly connected to the end of the arc-shaped soft pad away from the mounting pad. Among them, the material of the curved soft pad is softer than that of the hard rubber pad. When external pressure is applied to the outer wall of the hard rubber pad, the curved soft pad will deform first.

2. The 12kV environmentally friendly gas-insulated ring main unit according to claim 1, characterized in that: The central axis of the second connecting cylinder overlaps with the central axis of the connecting port, and the two are at the same height. High-pressure gas can be transmitted to the inner wall of another cabinet through the connecting port and the interconnection component.

3. A 12kV environmentally friendly gas-insulated ring main unit according to claim 2, characterized in that: A rubber pad is fixedly connected to the outer wall of the connecting cylinder; During installation, workers need to insert connecting cylinder one into connecting cylinder two at both ends.

4. A 12kV environmentally friendly gas-insulated ring main unit according to claim 3, characterized in that: The flow assembly includes a positioning plate fixedly connected to the inner wall of the connecting cylinder, and a through hole is provided on the side wall of the positioning plate; In this process, after the high-pressure gas enters the interior of the connecting cylinder, it enters the interior of another cabinet through the through hole.

5. A 12kV environmentally friendly gas-insulated ring main unit according to claim 4, characterized in that: An installation ring is fixedly connected to the side wall of the connecting cylinder one; After installation, the installation ring will be tightly attached to the inner wall of the connection port to ensure that the high-pressure gas inside the connection port can only be transmitted to the other cabinet through the connection cylinder.

6. A 12kV environmentally friendly gas-insulated ring main unit according to claim 5, characterized in that: The buckle assembly includes a force-bearing plate fixedly connected to the side wall of the arc-shaped soft pad, and a metal reinforcing rib fixedly connected to the outer wall of the arc-shaped soft pad; When the curved soft pad is deformed by high-pressure gas, the curved soft pad will transmit the force to the rubber hard pad through the metal reinforcing rib, forcing the rubber hard pad to stick tightly to the inner wall of the connecting cylinder.

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