Air-insulated vacuum load ring main unit

Abstract

The utility model relates to an air-insulated vacuum load ring main unit, which comprises a cabinet body, a mounting rack arranged in the middle of the cabinet body, a load switch assembly arranged on the mounting rack, heat exchange cavities arranged on the left side and the right side of the cabinet body and penetrating up and down, and transverse plates uniformly arranged in the heat exchange cavities from top to bottom. Notches allowing air to penetrate through are formed between the tail ends of the transverse plates and the front wall or the rear wall in the heat exchange cavity, the gaps corresponding to the vertically adjacent transverse plates are located on the front side and the rear side, fans are evenly installed on an opening in the lower end of the heat exchange cavity, and heat exchange rods are arranged in the heat exchange cavity and connected with the transverse plates. The upper end of the heat exchange rod penetrates out of the top of the cabinet body and is provided with a heat dissipation plate, the bottom of the cabinet body is provided with a nitrogen supplementing assembly for supplying nitrogen into the cabinet body, the top in the cabinet body is provided with a nitrogen detector and an air pressure detector, the top of the cabinet body is provided with an exhaust port communicating inside and outside, the inner end of the exhaust port is provided with a valve A, and the outer end of the exhaust port is provided with a sucking pump. The LED lamp has the advantages of being high in heat dissipation speed and good in safety.

Description

Technical Field

[0001] The utility model relates to the technical field of ring network cabinets, in particular to an air-insulated vacuum load ring network cabinet. Background Art

[0002] A ring main unit is a group of electrical equipment that is installed in a metal or non-metallic insulating cabinet or made into an assembled interval ring main unit. It has the advantages of simple structure, small size, improved power supply parameters and performance, and power supply safety.

[0003] In the existing ring network cabinet, the interior of the ring network cabinet is a closed environment. The heat generated by the load switch and related components during operation is trapped inside the ring network cabinet, which is difficult to dissipate and poses a risk of overheating. Moreover, the load switch and related components are in the same environment, and the insulation effect between them is poor, posing a safety hazard. Utility Model Content

[0004] The utility model aims to provide an air-insulated vacuum load ring network cabinet, which has the advantages of fast heat dissipation speed and good safety.

[0005] The technical solution of the utility model is as follows:

[0006] An air-insulated vacuum load ring network cabinet comprises a cabinet body, which is a vertically placed rectangular parallelepiped, a sealed door hinged on the front opening of the cabinet body, a mounting frame provided in the middle of the cabinet body, a load switch assembly installed on the mounting frame, and a heat exchange cavity which passes through from top to bottom is provided on the left and right sides of the cabinet body, the upper end opening of the heat exchange cavity is higher than the load switch assembly and the lower end opening is lower than the load switch assembly, horizontal plates are evenly provided in the heat exchange cavity from top to bottom, a gap for gas to pass through is provided between the end of the horizontal plate and the front wall or the rear wall of the heat exchange cavity, and the gaps corresponding to the upper and lower adjacent horizontal plates are located at the front and rear sides, and fans are evenly provided on the lower end opening of the heat exchange cavity, and the fans blow from the heat exchange cavity to the Air is blown inside the cabinet, and a heat exchange rod is provided in the heat exchange cavity in the vertical direction. The heat exchange rod is connected to the horizontal plate, and the upper end of the heat exchange rod passes through the top of the cabinet. Heat dissipation plates are evenly provided on the part of the heat exchange rod outside the cabinet. The cabinet is filled with nitrogen, and a nitrogen replenishing component for supplying nitrogen to the cabinet is provided at the bottom of the cabinet. A nitrogen detector and an air pressure detector are provided at the top of the cabinet. An exhaust port communicating with the inside and outside is provided at the top of the cabinet. A valve A is provided at the inner end of the exhaust port, and an air pump is provided at the outer end of the exhaust port. The inlet of the air pump is connected to the exhaust port. A control console is provided on the front of the cabinet, and the console is electrically connected to the nitrogen replenishing component, nitrogen detector, air pressure detector, air pump and valve A.

[0007] Preferably, the nitrogen replenishing assembly includes an installation cavity, an installation door, a compressed nitrogen cylinder, a docking port, an air inlet and a valve B. The installation cavity is provided at the bottom of the cabinet, and an installation door is hinged on the front opening of the installation cavity. A compressed nitrogen cylinder is placed in the installation cavity, and a docking port for docking with the bottle mouth of the compressed nitrogen cylinder is provided in the installation cavity. The bottom of the cabinet is provided with an air inlet connected to the docking port, and the inner end of the air inlet is provided with a valve B.

[0008] Preferably, a filter screen plate tilted downward from back to front is provided at the upper opening of the heat exchange chamber, the filter screen plate is higher than the horizontal plate, a through hole is provided on the filter screen plate for the heat exchange rod to pass through, a waste removal port corresponding to the front end of the filter screen plate is provided on the front side of the cabinet, and a waste blocking door is hinged on the waste removal port.

[0009] Preferably, the mounting frame is evenly provided with air holes communicating with each other from top to bottom.

[0010] Preferably, three heat exchange rods are provided in one heat exchange cavity, and the heat exchange rods are evenly arranged from front to back in the heat exchange cavity.

[0011] Preferably, three fans are installed on the lower opening of one of the heat exchange chambers.

[0012] The utility model has the following beneficial technical effects:

[0013] 1. Create a nitrogen flow circulation between the load switch assembly and the heat exchange cavity in the cabinet. With the help of heat conduction through the horizontal plates, heat exchange rods and heat dissipation plates, the heat in the cabinet is quickly diffused to the outside, reducing the risk of overheating. The heated nitrogen in the middle of the cabinet is guided from the top into the heat exchange cavity by a fan and discharged from the bottom of the heat exchange cavity. When the nitrogen flows in the heat exchange cavity, the heat in the air is absorbed by the various horizontal plates of the heat exchange cavity, and the heat exchange rods connected to the horizontal plates conduct the heat to the outside of the cabinet, thereby reducing the risk of overheating inside the cabinet. The heat dissipation plates connected to the heat exchange rods increase the contact area with the air, helping to speed up the speed at which the heat exchange rods dissipate heat to the outside air. The horizontal plates divide the flow path in the heat exchange cavity for the nitrogen to bend and move forward. By increasing the moving length of the nitrogen in the heat exchange cavity, the heat exchange effect between the nitrogen in the heat exchange cavity and the horizontal plates is improved.

[0014] 2. Fill the cabinet with nitrogen to improve the insulation between the components in the load switch assembly and enhance safety. By using the nitrogen replenishing assembly, nitrogen detector, air pressure detector and vacuum pump in combination, the user can easily create a nitrogen-filled environment in the cabinet. The user first opens valve A and the vacuum pump through the console, and uses the data transmitted back to the console by the air pressure detector to determine whether the vacuum pump has exhausted all the air in the cabinet. After the gas in the cabinet is emptied, close valve A and the vacuum pump, and then open the nitrogen replenishing assembly to replenish nitrogen into the cabinet. Use the data transmitted back to the console by the nitrogen detector and air pressure detector to determine whether the cabinet is full of nitrogen. When the air pressure in the cabinet reaches normal pressure and the nitrogen concentration meets the standard, close the nitrogen replenishing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution of the utility model will be further described below in conjunction with the accompanying drawings.

[0016] Attachment Figure 1 It is the main view of the utility model.

[0017] Attachment Figure 2 This is a cross-sectional view from the main perspective of the present invention.

[0018] Attachment Figure 3 It is a cross-sectional view from the right side of the utility model.

[0019] In the figure: 1-cabinet, 2-sealed door, 3-mounting frame, 4-load switch assembly, 5-heat exchange cavity, 6-cross plate, 7-notch, 8-fan, 9-heat exchange rod, 10-heat sink, 11-nitrogen replenishing assembly, 12-nitrogen detector, 13-air pressure detector, 14-exhaust port, 15-valve A, 16-vacuum pump, 17-console, 18-mounting cavity, 19-mounting door, 20-compressed nitrogen cylinder, 21-docking port, 22-air inlet, 23-valve B, 24-filter plate, 25-through hole, 26-waste outlet, 27-waste blocking door, 28-air hole. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example:

[0022] like Figures 1 to 3As shown, this embodiment provides an air-insulated vacuum load ring network cabinet, including a cabinet body 1, which is a vertically placed rectangular parallelepiped. A sealed door 2 is hingedly connected to the front opening of the cabinet body 1. A mounting frame 3 is provided in the middle of the cabinet body 1, and a load switch assembly 4 is installed on the mounting frame 3. A heat exchange cavity 5 is provided on the left and right sides of the cabinet body 1, and the upper end opening of the heat exchange cavity 5 is higher than the load switch assembly 4 and the lower end opening is lower than the load switch assembly 4. Horizontal plates 6 are evenly arranged from top to bottom in the heat exchange cavity 5. A gap 7 for gas to pass through is provided between the end of the horizontal plate 6 and the front wall or rear wall of the heat exchange cavity 5. The gaps 7 corresponding to the upper and lower adjacent horizontal plates 6 are located at the front and rear sides. Fans 8 are evenly installed on the lower end opening of the heat exchange cavity 5, and the fan 8 blows air from the heat exchange cavity 5 into the cabinet body 1. A heat exchange rod 9 is provided in the heat exchange chamber 5 along the vertical direction. The heat exchange rod 9 is connected to the horizontal plate 6. The upper end of the heat exchange rod 9 passes through the top of the cabinet 1. Heat dissipation plates 10 are evenly provided on the part of the heat exchange rod 9 outside the cabinet 1. The cabinet 1 is filled with nitrogen. A nitrogen replenishing component 11 for supplying nitrogen to the cabinet 1 is provided at the bottom of the cabinet 1. A nitrogen detector 12 and an air pressure detector 13 are provided at the top of the cabinet 1. An exhaust port 14 communicating with the inside and outside is provided at the top of the cabinet 1. A valve A15 is provided at the inner end of the exhaust port 14, and an air pump 16 is provided at the outer end of the exhaust port 14. The inlet of the air pump 16 is connected to the exhaust port 14. A control console 17 is provided on the front of the cabinet 1. The control console 17 is electrically connected to the nitrogen replenishing component 11, the nitrogen detector 12, the air pressure detector 13, the air pump 16 and the valve A15.

[0023] A nitrogen flow circulation is created between the load switch assembly 4 and the heat exchange chamber 5 in the cabinet 1. With the help of heat conduction through the cross plate 6, heat exchange rod 9 and heat dissipation plate 10, the heat in the cabinet 1 is quickly diffused to the outside, reducing the risk of overheating; the nitrogen with heat in the middle of the cabinet 1 is guided from the top into the heat exchange chamber 5 by the fan 8 and discharged from the bottom of the heat exchange chamber 5. When the nitrogen flows in the heat exchange chamber 5, the heat in the air is absorbed by the various cross plates 6 of the heat exchange chamber 5, and the heat exchange rod 9 connected to the cross plate 6 conducts the heat to the outside of the cabinet 1, thereby reducing the risk of overheating inside the cabinet 1. The heat dissipation plate 10 connected to the heat exchange rod 9 increases the contact area with the air, helping to speed up the speed at which the heat exchange rod 9 dissipates heat to the outside air. The cross plate 6 divides a flow path in the heat exchange chamber 5 for the nitrogen to bend and move forward, thereby increasing the moving length of the nitrogen in the heat exchange chamber 5 and improving the heat exchange effect between the nitrogen in the heat exchange chamber 5 and the cross plate 6. The cabinet 1 is filled with nitrogen to improve the insulation between the various components in the load switch assembly 4 and enhance safety. By using the nitrogen replenishing assembly 11, the nitrogen detector 12, the air pressure detector 13 and the air pump 16 in combination, the user can conveniently create an environment filled with nitrogen in the cabinet 1. The user first opens the valve A15 and the air pump 16 through the console 17, and uses the data transmitted back to the console 17 by the air pressure detector 13 to determine whether the air in the cabinet 1 has been completely exhausted by the air pump 16. After the gas in the cabinet 1 is emptied, the valve A15 and the air pump 16 are closed, and then the nitrogen replenishing assembly 11 is opened to replenish nitrogen into the cabinet 1. The data transmitted back to the console 17 by the nitrogen detector 12 and the air pressure detector 13 are used to determine whether the cabinet 1 is filled with nitrogen. When the air pressure in the cabinet 1 reaches normal pressure and the nitrogen concentration meets the standard, the nitrogen replenishing assembly 11 is closed.

[0024] Furthermore, the nitrogen replenishing assembly 11 includes an installation cavity 18, an installation door 19, a compressed nitrogen cylinder 20, a docking port 21, an air inlet 22 and a valve B23. The installation cavity 18 is provided at the bottom of the cabinet 1, and the installation door 19 is hinged on the front opening of the installation cavity 18. The compressed nitrogen cylinder 20 is placed in the installation cavity 18, and the installation cavity 18 is provided with a docking port 21 for docking with the bottle mouth of the compressed nitrogen cylinder 20. The bottom of the cabinet 1 is provided with an air inlet 22 connected to the docking port 21, and the inner end of the air inlet 22 is provided with a valve B23.

[0025] A compressed nitrogen cylinder 20 is used as a nitrogen source, and the installation cavity 18 is used to store the compressed nitrogen cylinder 20. The bottle mouth of the compressed nitrogen cylinder 20 is connected to the valve B23 by the air inlet 22. The supply of nitrogen to the cabinet 1 is controlled by controlling the opening and closing of the valve B23. When the amount of nitrogen in the compressed nitrogen cylinder 20 is insufficient, the user opens the installation door 19 and replaces the compressed nitrogen cylinder 20 in the installation cavity 18.

[0026] Furthermore, a filter screen plate 24 tilted downward from the back to the front is provided at the upper opening of the heat exchange chamber 5. The filter screen plate 24 is higher than the horizontal plate 6. A through hole 25 is provided on the filter screen plate 24 for the heat exchange rod 9 to pass through. A waste outlet 26 corresponding to the front end of the filter screen plate 24 is provided on the front side of the cabinet 1. A waste blocking door 27 is hinged on the waste outlet 26.

[0027] The filter plate 24 is used to block impurities drawn into the nitrogen gas, thereby maintaining a clean nitrogen environment in the cabinet 1. The filter plate 24 is tilted downward from the back to the front, allowing some impurities not adhering to the filter plate 24 to roll forward and closer to the waste outlet 26. After the user opens the waste blocking door 27, the impurities on the filter plate 24 can be removed through the waste outlet 26, making cleaning easier.

[0028] Furthermore, the mounting frame 3 is evenly provided with air holes 28 communicating with each other from top to bottom.

[0029] The air holes 28 are used to improve the air permeability of the mounting frame 3, allowing the nitrogen to flow more evenly, thereby improving the effect of the flowing nitrogen in removing heat from the circuit breaker assembly.

[0030] Furthermore, three heat exchange rods 9 are provided in one heat exchange cavity 5 , and the heat exchange rods 9 are evenly arranged from front to back in the heat exchange cavity 5 .

[0031] Furthermore, three fans 8 are installed on the lower opening of a heat exchange chamber 5 .

[0032] The working principle and use process of this utility model:

[0033] After completing the commissioning and maintenance of the load switch assembly 4, the user closes the sealed door 2, then opens the valve A15 and starts the vacuum pump 16. After extracting the air in the cabinet 1, the valve A15 and the vacuum pump 16 are closed. Then, the nitrogen replenishing assembly 11 is opened, sufficient nitrogen is injected into the cabinet 1, and the nitrogen replenishing assembly 11 is closed. Finally, each fan 8 is started to create a nitrogen flow circulation in the cabinet 1 to help dissipate the heat generated by the load switch assembly 4 to the outside.

[0034] The above are only specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the scope of protection of the present invention.

Claims

1. An air-insulated vacuum load ring network cabinet, characterized by: The cabinet comprises a cabinet body, which is a vertically placed rectangular parallelepiped, a sealed door hinged on the front opening of the cabinet body, a mounting frame provided in the middle of the cabinet body, a load switch assembly installed on the mounting frame, a heat exchange cavity which passes through from top to bottom is provided on the left and right sides of the cabinet body, the upper opening of the heat exchange cavity is higher than the load switch assembly and the lower opening is lower than the load switch assembly, horizontal plates are evenly provided in the heat exchange cavity from top to bottom, a gap for gas to pass through is provided between the end of the horizontal plate and the front wall or the rear wall of the heat exchange cavity, the gaps corresponding to the upper and lower adjacent horizontal plates are located at the front and rear sides, fans are evenly provided on the lower opening of the heat exchange cavity, and the fans blow air from the heat exchange cavity into the cabinet body, A heat exchange rod is provided in the heat exchange cavity along the vertical direction, and the heat exchange rod is connected to the horizontal plate. The upper end of the heat exchange rod passes through the top of the cabinet. Heat dissipation plates are evenly provided on the part of the heat exchange rod outside the cabinet. The cabinet is filled with nitrogen. A nitrogen replenishing component for supplying nitrogen to the cabinet is provided at the bottom of the cabinet. A nitrogen detector and an air pressure detector are provided at the top of the cabinet. An exhaust port communicating with the inside and outside is provided at the top of the cabinet. A valve A is provided at the inner end of the exhaust port, and an air pump is provided at the outer end of the exhaust port. The inlet of the air pump is connected to the exhaust port. A control console is provided on the front of the cabinet, and the console is electrically connected to the nitrogen replenishing component, nitrogen detector, air pressure detector, air pump and valve A.

2. The air-insulated vacuum load ring main unit according to claim 1, characterized in that: The nitrogen replenishing assembly includes an installation cavity, an installation door, a compressed nitrogen cylinder, a docking port, an air inlet and a valve B. The installation cavity is provided at the bottom of the cabinet, and an installation door is hinged on the front opening of the installation cavity. A compressed nitrogen cylinder is placed in the installation cavity, and a docking port for docking with the bottle mouth of the compressed nitrogen cylinder is provided in the installation cavity. An air inlet connected to the docking port is provided at the bottom of the cabinet, and a valve B is provided at the inner end of the air inlet.

3. The air-insulated vacuum load ring main unit according to claim 1, characterized in that: A filter screen plate tilted downward from back to front is provided at the upper opening of the heat exchange chamber. The filter screen plate is higher than the horizontal plate. A through hole is provided on the filter screen plate for the heat exchange rod to pass through. A waste removal port corresponding to the front end of the filter screen plate is provided on the front side of the cabinet. A waste blocking door is hinged on the waste removal port.

4. The air-insulated vacuum load ring main unit according to claim 1, characterized in that: The mounting frame is evenly provided with air holes which are communicated with each other from top to bottom.

5. The air-insulated vacuum load ring main unit according to claim 1, characterized in that: Three heat exchange rods are arranged in one heat exchange cavity, and the heat exchange rods are evenly arranged from front to back in the heat exchange cavity.

6. The air-insulated vacuum load ring main unit according to claim 1, characterized in that: Three fans are installed on the lower opening of one heat exchange cavity.

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