A water-resistant, fully sealed, miniaturized ring main unit

Abstract

This utility model discloses a water-resistant, fully sealed, miniaturized ring main unit, including a box body, a sealing plate, a receiving groove, and a first circular pad. Support columns are fixedly connected to all four sides of the upper end of the box body. Two of the support columns are hinged to connecting plates at their upper ends. The connecting plates, on the side away from two of the support columns, are bolted to the other two support columns. An adjusting rod is threaded onto the upper end of the connecting plate, and a push plate is rotatably connected to the bottom end of the adjusting rod. The bottom end of the push plate contacts a fixed frame. The fixed frame, on the side away from the connecting plate, contacts the upper end of the box body. An air outlet groove is provided at the upper end of the box body. An air inlet frame is fixedly connected to the upper end of the fixed frame, and a first air pump is fixedly connected to one side of the upper end of the fixed frame. This utility model utilizes a guide pipe externally located outside the box body on the side away from the sealing plate. The first air pump draws air from inside the box body and transmits it to the guide pipe, then it flows back to the bottom of the box body through the connecting frame, thus making the insulating gas flowable. Combined with a heat-conducting sheet, this increases the heat dissipation surface area and improves heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ring network box technology, specifically to a water-resistant, fully sealed, miniaturized ring network box. Background Technology

[0002] A ring main unit, also known as a ring main cabinet, is a high-voltage switchgear used in ring main power supply systems for connection, segmentation, control, and protection. It typically features SF6 gas insulation, full sealing, and modular structure, and offers advantages such as small size, high reliability, good safety, and maintenance-free operation.

[0003] Common water-resistant, sealed, miniaturized ring main units have a compact layout due to space constraints, resulting in concentrated heat-generating components and a small actual heat dissipation area. Furthermore, the thermal conductivity of the insulating gas is much lower than that of metals or liquid coolants, so the ring main unit relies heavily on natural convection of the insulating gas for heat dissipation, which is inefficient and causes the temperature to rise rapidly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a water-resistant, fully sealed, miniaturized ring main unit to improve heat dissipation and increase heat dissipation efficiency.

[0005] The technical solution adopted by this utility model to solve the technical problem is: a water-resistant, fully sealed, miniaturized ring mesh box, including a box body, a sealing plate, a receiving groove, and a first ring gasket. Support columns are fixedly connected to all four sides of the upper end of the box body. Two of the support columns are hinged to connecting plates at their upper ends. The connecting plates, on the side away from two of the support columns, are fixedly connected to the other two support columns by bolts. An adjusting rod is threadedly connected to the upper end of the connecting plate. A push plate is rotatably connected to the bottom end of the adjusting rod. The bottom end of the push plate contacts a fixing frame. The end of the fixing frame away from the connecting plate contacts the upper end of the box body. An air outlet groove is provided at the upper end. An air inlet frame is fixedly connected to the upper end of the fixed frame. A first air pump is fixedly connected to one side of the upper end of the fixed frame. The air inlet end of the first air pump is connected to the inside of the air inlet frame. An air distribution pipe is fixedly connected to the output end of the first air pump. The air distribution pipe and the sealing plate are located on both sides of the box. A guide pipe is evenly fixedly connected to one end of the air distribution pipe. A connecting frame is fixedly connected to the bottom end of the guide pipe. The connecting frame is fixedly connected to the box by bolts and is connected to the inside of the box. A baffle is fixedly connected to the bottom side of the box. An air inlet groove is provided on the baffle.

[0006] As a preferred technical solution of this utility model, the upper end of the box body is in contact with a second loop-shaped pad, and a loop-shaped clip frame is snapped onto the second loop-shaped pad. The loop-shaped clip frame is fixedly connected to the bottom side of the fixed frame. By setting the second loop-shaped pad and the loop-shaped clip frame, the gap between the box body and the fixed frame can be sealed.

[0007] As a preferred technical solution of this utility model, a nitrogen replenishment bottle is fixedly connected to one side of the upper end of the fixed frame, an air inlet pipe is fixedly connected to the bottom side of the nitrogen replenishment bottle, and a second air pump is fixedly connected to one side of the air inlet pipe. The second air pump is fixedly connected to the upper side of the fixed frame. By setting the second air pump and the nitrogen replenishment bottle, the insulating air inside the box can be replenished.

[0008] As a preferred technical solution of this utility model, an exhaust valve is fixedly connected to one side of the upper end of the connecting frame, and a micro motor is fixedly connected to one side of the exhaust valve. The micro motor controls the rotation of the valve plate, thereby opening and closing the exhaust valve.

[0009] As a preferred technical solution of this utility model, a U-shaped pressure plate is fixedly connected inside the connecting frame, and a third U-shaped pad is in contact with one side of the U-shaped pressure plate. The third U-shaped pad is in contact with one side of the box body. By setting the U-shaped pressure plate and the third U-shaped pad, the sealing between the box body and the connecting frame can be increased.

[0010] This utility model has the following advantages:

[0011] By placing the guide pipe outside the box on the side away from the sealing plate, the first air pump draws air from inside the box and transmits it to the guide pipe. Then, the air flows back to the bottom of the box through the connecting frame, thereby making the insulating gas flow. In conjunction with the heat-conducting plate, the heat dissipation surface can be increased and the heat dissipation efficiency can be improved.

[0012] By setting up a receiving groove and a first loop gasket, a loop frame, a second loop gasket, a loop pressure plate, and a third loop gasket, a sealing structure can be formed, increasing the sealing effect of the box and reducing water erosion.

[0013] By setting a connecting plate with hinges and limiting the connecting plate and connecting frame with bolts, the nitrogen replenishment bottle, the first air pump, the second air pump, the first backing pad, the second backing pad and the third backing pad can be replaced during disassembly, which can greatly improve disassembly efficiency and reduce the time required for maintenance. Attached Figure Description

[0014] Figure 1 This is a side sectional view of a preferred embodiment of a water-resistant, fully sealed, miniaturized ring mesh box of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of a water-resistant, fully sealed, miniaturized ring mesh box according to a preferred embodiment of the present invention.

[0016] Figure 3 This is a three-dimensional sectional view of the fixed frame of a water-resistant, fully sealed, miniaturized ring network box according to a preferred embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Sealing plate; 3. Support column; 4. Connecting plate; 5. Adjusting rod; 6. Push plate; 7. Fixing frame; 8. Air outlet slot; 9. Air inlet frame; 10. First air pump; 11. Air distribution pipe; 12. Guide pipe; 13. Connecting frame; 14. Baffle; 15. U-shaped retaining frame; 16. Second U-shaped retaining pad; 17. Nitrogen replenishment bottle; 18. Air inlet pipe; 19. Second air pump; 20. Exhaust valve. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to the following: Figure 1-3 The illustrated water-resistant, fully sealed miniaturized ring network box includes a box body 1, a sealing plate 2, a receiving groove, and a first ring gasket. The box body 1, away from the sealing plate 2, also has a wire frame and wire connection holes. Rubber sealing rings and heat-shrinkable sealing sleeves are installed in the wire connection holes, and these are pre-sealed with epoxy resin. Together with the receiving groove, the first ring gasket, the ring frame 13, the second ring gasket 16, the ring pressure plate, and the third ring gasket, a strong sealing structure is formed, reducing water erosion into the box body 1. Support columns 3 are fixedly connected to the four sides of the upper end of the first box body 1, including two support columns 3... The upper hinge connects to a connecting plate 4. The side of the connecting plate 4 furthest from two of the support columns 3 is bolted to the other two support columns 3. An adjusting rod 5 is threaded onto the upper end of the connecting plate 4. Rotating the adjusting rod 5 causes the push plate 6 to press down, thus compressing the first shaped pad and bringing it into close contact with the upper end of the housing 1, reducing the gap between the housing 1 and the fixing frame 7, thereby achieving a seal. The bottom end of the adjusting rod 5 is rotatably connected to the push plate 6, and the bottom end of the push plate 6 contacts the fixing frame 7. The end of the fixing frame 7 furthest from the connecting plate 4 contacts the upper end of the housing 1. An air vent 8 is provided at the upper end of the housing 1. An air inlet frame 9 is fixedly connected to the upper end of frame 7. A first air pump 10 is fixedly connected to one side of the upper end of frame 7. The first air pump 10 is used to draw gas from the box 1 and transmit it to the connecting frame 13 through the guide pipe 12, and then return to the box 1 from the bottom side. The air inlet end of the first air pump 10 is connected to the inside of the air inlet frame 9. A gas distribution pipe 11 is fixedly connected to the output end of the first air pump 10. The gas distribution pipe 11 is used to distribute the gas in the box 1 evenly. The gas distribution pipe 11 and the sealing plate 2 are located on the two sides of the box 1, respectively. One end of the gas distribution pipe 11 is evenly fixedly connected to... A guide pipe 12 is connected to the outer side of the housing 1. The guide pipe 12 is wavy and is uniformly fixed to heat-conducting plates on the outer side of the housing 1. This increases the heat dissipation surface and facilitates heat dissipation. By circulating the airflow, the heat generated by the components inside the housing 1 can be transferred to the heat-conducting plates, thereby improving the heat dissipation effect. A connecting frame 13 is fixedly connected to the bottom end of the guide pipe 12. The connecting frame 13 is fixedly connected to the housing 1 by bolts and communicates with the inside of the housing 1. A baffle 14 is fixedly connected to the bottom side of the inner side of the housing 1. An air inlet groove is opened on the baffle 14.

[0020] The upper end of the housing 1 is in contact with a second loop-shaped pad 16, and a loop-shaped frame 15 is snapped onto the second loop-shaped pad 16. The loop-shaped frame 15 is fixedly connected to the bottom side of the fixed frame 7. By setting the second loop-shaped pad 16 and the loop-shaped frame 15, moisture can be reduced from entering the housing 1 through the gap between the upper end of the housing 1 and the fixed frame 7, thus reducing the corrosion of the components inside the housing 1.

[0021] Nitrogen replenishment bottle 17 is fixedly connected to one side of the upper end of the fixed frame 7. An air inlet pipe 18 is fixedly connected to the bottom side of the nitrogen replenishment bottle 17. A second air pump 19 is fixedly connected to one side of the air inlet pipe 18. The second air pump 19 is fixedly connected to the upper side of the fixed frame 7. The nitrogen replenishment bottle 17 can be used to replenish nitrogen into the box 1. When the operation of the box 1 requires opening the sealing plate 2, air can be supplied through the second air pump 19, and then the gas that enters the box 1 when the sealing plate 2 is open can be discharged through the exhaust valve 20.

[0022] Among them, an exhaust valve 20 is fixedly connected to one side of the upper end of the connecting frame 13, and a micro motor is fixedly connected to one side of the exhaust valve 20. The structure of the exhaust valve 20 consists of a pipe, a micro motor and a valve plate. The micro motor controls the valve plate to rotate, thereby opening or closing the pipe, thus reducing the amount of water or air entering the connecting frame 13.

[0023] The connecting frame 13 is fixedly connected with a U-shaped pressure plate. One side of the U-shaped pressure plate contacts a third U-shaped pad. The third U-shaped pad contacts one side of the box body 1. The design of the third U-shaped pad and the U-shaped pressure plate allows the third U-shaped pad to fit tightly against the box body 1, thereby reducing the amount of water vapor or air entering the box body 1 from the connecting frame 13.

[0024] Working principle: The insulating air inside the enclosure 1 is supplied by a nitrogen replenishment bottle 17. Then, the first air pump 10 draws gas through the inlet frame 9 into the distribution pipe 11, then flows back through the guide pipe 12 to the connecting frame 13, and finally enters the bottom of the enclosure 1, completing the gas circulation. The gas carries heat to the corrugated guide pipe 12 structure. With the increased heat dissipation area, heat conduction from the components inside the enclosure 1 is improved, enhancing heat dissipation efficiency. Furthermore, by adding a first, second, and third ring-shaped gasket, and installing rubber sealing rings and heat-shrinkable sealing sleeves at the wire connection holes, along with epoxy resin potting, a strong... The sealed structure reduces the ingress of moisture into the housing 1. During maintenance, nitrogen replenishment bottle 17 fills the housing 1 with nitrogen, while exhaust valve 20 is used to release gas, thus completing the filling and replenishment of insulating gas. During disassembly, the adjusting rod 5 can be flipped to move the push plate 6 to the side of the connecting plate 4. At this time, the bolts on the upper side of the connecting plate 4 and the side of the connecting frame 13 away from the housing 1 can be opened, allowing the fixing frame 7 and the guide pipe 12 to be disassembled, thereby replacing the first loop gasket, the second loop gasket 16, the third loop gasket, the first air pump 10, the second air pump 19, and the nitrogen replenishment bottle 17, which facilitates maintenance and replacement.

[0025] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0026] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A water-resistant, fully sealed, miniaturized ring mesh box, comprising a box body (1), a sealing plate (2), a receiving groove, and a first ring gasket, characterized in that, The upper end of the box (1) is fixedly connected to four support columns (3). Two of the support columns (3) are hinged to a connecting plate (4). The side of the connecting plate (4) away from two of the support columns (3) is fixedly connected to the other two support columns (3) by bolts. The upper end of the connecting plate (4) is threadedly connected to an adjusting rod (5). The bottom end of the adjusting rod (5) is rotatably connected to a push plate (6). The bottom end of the push plate (6) contacts a fixing frame (7). The end of the fixing frame (7) away from the connecting plate (4) contacts the upper end of the box (1). The upper end of the box (1) is provided with an air outlet groove (8). The upper end of the fixing frame (7) is fixedly connected to an air inlet frame (9). A first air pump (10) is fixedly connected to one side of the upper end. The air inlet end of the first air pump (10) is connected to the inside of the air inlet frame (9). The output end of the first air pump (10) is fixedly connected to a distribution pipe (11). The distribution pipe (11) and the sealing plate (2) are located on both sides of the box (1). One end of the distribution pipe (11) is evenly fixedly connected to a guide pipe (12). The bottom end of the guide pipe (12) is fixedly connected to a connecting frame (13). The connecting frame (13) is fixedly connected to the box (1) by bolts. The connecting frame (13) is connected to the inside of the box (1). A baffle (14) is fixedly connected to the bottom side of the box (1). An air inlet groove is opened on the baffle (14).

2. The water-resistant, fully sealed, miniaturized ring main unit as described in claim 1, characterized in that, The upper end of the box (1) is in contact with a second loop pad (16), and a loop frame (15) is snapped onto the second loop pad (16). The loop frame (15) is fixedly connected to the bottom side of the fixed frame (7).

3. The water-resistant, fully sealed, miniaturized ring main unit as described in claim 2, characterized in that, A nitrogen replenishment bottle (17) is fixedly connected to one side of the upper end of the fixed frame (7), and an air inlet pipe (18) is fixedly connected to the bottom side of the nitrogen replenishment bottle (17). A second air pump (19) is fixedly connected to one side of the air inlet pipe (18), and the second air pump (19) is fixedly connected to the upper side of the fixed frame (7).

4. The water-resistant, fully sealed, miniaturized ring main unit as described in claim 1, characterized in that, An exhaust valve (20) is fixedly connected to one side of the upper end of the connecting frame (13), and a micro motor is fixedly connected to one side of the exhaust valve (20).

5. A water-resistant, fully sealed, miniaturized ring main unit as described in claim 4, characterized in that, A loop-shaped pressure plate is fixedly connected inside the connecting frame (13). One side of the loop-shaped pressure plate contacts a third loop-shaped pad, and the third loop-shaped pad contacts one side of the box body (1).

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