Air insulation ring net cabinet

Abstract

This utility model provides an air-insulated ring main unit, including an air filter base, a support frame, an air compressor, a gas pipe, a cabinet, a switch door, and a top air vent. The support frame is fixedly installed inside the air filter base, and the air compressor is fixedly installed on the support frame. The gas pipe is fixedly installed at the air outlet of the air compressor. The cabinet is fixedly installed above the air filter base, and the gas pipe is fixedly installed on one side of the cabinet. The switch door is installed on the front side of the cabinet. The top air vent is fixedly installed on the top of the cabinet. The air filter base and gas pipe design of this utility model provide strong moisture filtration capabilities, prevent dust contamination, and provide emergency protection.

Description

Technical Field

[0001] This utility model relates to the field of grid cabinet technology, and in particular to an air-insulated ring main unit. Background Technology

[0002] In power distribution systems, ring main units (RMMs) are key equipment primarily used for power distribution, control, and protection. Traditional RMMs mainly employ either air insulation or SF6 gas insulation technologies. Air-insulated RMMs are widely used in medium-voltage power distribution due to their simple structure and lower cost. However, existing air-insulated RMMs still suffer from poor moisture filtration capabilities, susceptibility to dust contamination, and inadequate emergency protection capabilities.

[0003] Therefore, it is essential to invent an air-insulated ring main unit. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an air-insulated ring main unit, solving the issues of poor moisture filtration, susceptibility to dust contamination, and poor emergency protection capabilities still present in existing air-insulated ring main units. An air-insulated ring main unit includes a filter base, a support frame, an air compressor, a gas pipe, a cabinet, a switch door, and a top vent. The support frame is fixedly installed inside the filter base, and the air compressor is fixedly installed on the support frame; the gas pipe is fixedly installed at the air outlet of the air compressor. The cabinet is fixedly installed above the filter base, and the gas pipe is fixedly installed on one side of the cabinet. The switch door is installed on the front side of the cabinet. The top vent is fixedly installed on the top of the cabinet.

[0005] The air filter base includes a supporting bottom, an air intake chamber, a first filter screen, a second filter screen, and a mounting seal. The air intake chamber is fixedly installed on the surface of the supporting bottom, and the first and second filter screens are respectively fixedly installed on the front and rear sides of the air intake chamber. The mounting seal is installed on one side of the air intake chamber, and a gas pipe is fixedly installed inside it.

[0006] The gas pipe includes a guide pipe, a delivery pipe, an air drying pipe, an inlet pipe, and an insulating gas pipe. The guide pipe is fixedly installed at the outlet end of the air compressor, and the delivery pipe is fixedly installed at one end of the guide pipe. The air drying pipe is fixedly installed at one end of the delivery pipe, and the inlet pipe is fixedly installed on the outside of the air drying pipe and extends into the interior of the cabinet. The insulating gas pipe is fixedly installed on the outside of the guide pipe.

[0007] The air filter base is a relatively sealed stainless steel metal box, and the air inside the air filter base can be drawn by the air compressor. After the air filter base is drawn by the air compressor, a negative pressure is formed. The air filter base draws in outside air through its own negative pressure, and the air is filtered through the first filter and the second filter.

[0008] The gas pipe inside is a set of stainless steel metal pipes that can transmit the high-pressure gas generated by the air compressor to the interior of the air inlet drying pipe, and the air inlet pipe can transmit the dried air to the interior of the cabinet. Several air inlet pipes are used and installed at different heights in the cabinet. The insulating gas pipe can be directly connected to the arc-extinguishing gas cylinder in an emergency.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The air filter base of this utility model is designed to form a sealed cavity through a supporting bottom and an air intake chamber. It utilizes a first filter and a second filter to achieve multi-directional air filtration. When the air compressor draws air through the air pipe, a negative pressure is formed in the air intake chamber to drive the flow of outside air. The mounting sealing seat ensures an airtight connection with the gas pipe, while the support frame is fixed on the supporting bottom, providing a stable installation platform for the air compressor.

[0011] The gas pipe of this utility model is designed to deliver high-pressure gas generated by the air compressor to the air drying pipe for deep dehumidification via the gas guide pipe, and then distribute it to various height areas of the cabinet through multiple branch air inlet pipes to form a three-dimensional dry airflow. At the same time, the insulated gas pipe provides an emergency channel for external arc-extinguishing gas. The entire system is made of 304 stainless steel and achieves airtight connection through the installation of sealing seats to ensure gas delivery, and has the dual functions of dry air supply and emergency arc extinguishing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a second-view schematic diagram of the present invention.

[0014] Figure 3 This is a schematic diagram of the structure of the air filter base of this utility model.

[0015] Figure 4 This is a schematic diagram of the structure of the gas tube of this utility model.

[0016] In the picture:

[0017] Air filter base 1, support bottom 11, air intake chamber 12, first filter screen 13, second filter screen 14, mounting sealing seat 15, support frame 2, air compressor 3, gas pipe 4, air guide pipe 41, air delivery pipe 42, air drying pipe 43, air inlet pipe 44, insulating gas pipe 45, cabinet 5, switch door 6, top air vent 7. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. 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 should fall within the protection scope of the present invention.

[0019] As attached Figure 1 To be continued Figure 3 As shown.

[0020] This utility model provides an air-insulated ring main unit, including an air filter base 1, a support frame 2, an air compressor 3, a gas pipe 4, a cabinet body 5, a switch door 6, and a top air vent 7. The support frame 2 is fixedly installed inside the air filter base 1, and the air compressor 3 is fixedly installed on the support frame 2. The gas pipe 4 is fixedly installed at the outlet end of the air compressor 3. The cabinet body 5 is fixedly installed above the air filter base 1, and the gas pipe 4 is fixedly installed on one side of the cabinet body 5. The switch door 6 is installed on the front side of the cabinet body 5. The top air vent 7 is fixedly installed on the top of the cabinet body 5.

[0021] The air filter base 1 includes a supporting bottom 11, an air intake chamber 12, a first filter screen 13, a second filter screen 14, and a mounting sealing seat 15. The air intake chamber 12 is fixedly installed on the surface of the supporting bottom 11, and the first filter screen 13 and the second filter screen 14 are respectively fixedly installed on the front and rear sides of the air intake chamber 12. The mounting sealing seat 15 is installed on one side of the air intake chamber 12, and a gas pipe 4 is fixedly installed inside it.

[0022] The gas pipe 4 includes a guide pipe 41, a delivery pipe 42, an air drying pipe 43, an inlet pipe 44, and an insulating gas pipe 45. The guide pipe 41 is fixedly installed at the outlet end of the air compressor 3, and the delivery pipe 42 is fixedly installed at one end of the guide pipe 41. The air drying pipe 43 is fixedly installed at one end of the delivery pipe 42, and the inlet pipe 44 is fixedly installed on the outside of the air drying pipe 43 and extends into the interior of the cabinet 5. The insulating gas pipe 45 is fixedly installed on the outside of the guide pipe 41.

[0023] The air filter base 1 is a relatively sealed stainless steel metal box, and the air inside the air filter base 1 can be drawn by the air compressor 3. After the air filter base 1 is drawn by the air compressor 3, a negative pressure is formed. The air filter base 1 draws in the outside air through its own negative pressure, and the air is filtered through the first filter screen 13 and the second filter screen 14.

[0024] The gas pipe 41 inside the gas pipe 4 is a set of stainless steel metal pipes that can transmit the high-pressure gas generated by the air compressor 3 to the interior of the air inlet drying pipe 43, and the air inlet pipe 44 can transmit the dried air to the interior of the cabinet 5. Several air inlet pipes 44 are used and are installed at different heights in the cabinet 5. The insulating gas pipe 45 can be directly connected to the arc extinguishing gas cylinder in an emergency.

[0025] This air-insulated ring main unit adopts active circulation drying technology. The incoming air is pre-treated by the multi-directional filtration system of the air filter base 1, and after being compressed by the air compressor 3, it is deeply dehumidified through the gas pipe system 4. The dry air is injected into the cabinet 5 through multiple branch air inlet pipes 44 to form a three-dimensional circulation, while the top air vent 7 discharges the moisture. The system is equipped with an insulating gas pipe 45 as an emergency arc extinguishing channel, and the airtightness is ensured by installing a sealing seat 15. The support frame 2 provides mechanical support, and the opening and closing door 6 achieves IP4X protection, forming a complete dynamic humidity control system.

[0026] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. An air-insulated ring main unit, characterized in that: The system includes an air filter base (1), a support frame (2), an air compressor (3), a gas pipe (4), a cabinet (5), a switch door (6), and a top air vent (7), wherein: the support frame (2) is fixedly installed inside the air filter base (1), and the air compressor (3) is fixedly installed on the support frame (2), and the gas pipe (4) is fixedly installed at the outlet end of the air compressor (3); the cabinet (5) is fixedly installed above the air filter base (1), and the gas pipe (4) is fixedly installed on one side of the cabinet (5), and the switch door (6) is installed on the front side of the cabinet (5); the top air vent (7) is fixedly installed on the top of the cabinet (5).

2. The air-insulated ring main unit as described in claim 1, characterized in that: The air filter base (1) includes a supporting bottom (11), an air intake chamber (12), a first filter screen (13), a second filter screen (14), and a mounting sealing seat (15). The air intake chamber (12) is fixedly installed on the surface of the supporting bottom (11), and the first filter screen (13) and the second filter screen (14) are respectively fixedly installed on the front and rear sides of the air intake chamber (12). The mounting sealing seat (15) is installed on one side of the air intake chamber (12), and a gas pipe (4) is fixedly installed inside it.

3. The air-insulated ring main unit as described in claim 1, characterized in that: The gas pipe (4) includes a gas guide pipe (41), a gas delivery pipe (42), an air drying pipe (43), an air inlet pipe (44), and an insulating gas pipe (45). The gas guide pipe (41) is fixedly installed at the outlet end of the air compressor (3), and the gas delivery pipe (42) is fixedly installed at one end of the gas guide pipe (41). The air drying pipe (43) is fixedly installed at one end of the gas delivery pipe (42), and the air inlet pipe (44) is fixedly installed on the outside of the air drying pipe (43) and extends into the interior of the cabinet (5). The insulating gas pipe (45) is fixedly installed on the outside of the gas guide pipe (41).

4. The air-insulated ring main unit as described in claim 2, characterized in that: The filter base (1) is a relatively sealed stainless steel metal box, and the air inside the filter base (1) can be drawn by the air compressor (3). After the air compressor (3) draws the air from the filter base (1), a negative pressure is formed. The filter base (1) draws in outside air through its own negative pressure, and the air is filtered through the first filter screen (13) and the second filter screen (14) when it is drawn in.

5. The air-insulated ring main unit as described in claim 3, characterized in that: The gas pipe (4) inside the gas pipe (4) is a set of stainless steel metal pipes that can transmit the high-pressure gas generated by the air compressor (3) to the interior of the air inlet drying pipe (43), and the air inlet pipe (44) can transmit the dried air to the interior of the cabinet (5). Several air inlet pipes (44) are used and installed at different heights in the cabinet (5); the insulating gas pipe (45) can be directly connected to the arc extinguishing gas cylinder in an emergency.

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