Ring net box

Abstract

The utility model relates to a ring main unit, and relates to the technical field of power equipment, and the ring main unit comprises a box body, a plurality of arranged cabinets are installed in the box body, electric elements used for ensuring stable operation of a power system are arranged in the cabinets, control buttons used for controlling the electric elements are arranged on the surfaces of the cabinets, and a protective cover used for isolating air covers the control buttons. The cabinet body is provided with a maintenance window through which internal electric elements can be directly observed. Electric elements in the cabinet body can be prevented from being corroded as much as possible, and the service life of the electric elements in the cabinet body is prolonged.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power equipment, in particular to a ring main unit. BACKGROUND

[0002] The ring main unit is widely applied to power distribution stations of urban residential areas, high-rise buildings, large public buildings and factories and enterprises, and is mainly used for realizing power distribution, control and protection.

[0003] In the related art, the salt mist is serious in the coastal area, the salt content in the air is high, and the inner wall fittings of the ring main unit are easily corroded during heat dissipation and ventilation, thereby affecting the service life of the internal electrical elements. SUMMARY

[0004] In order to improve the service life of the internal electrical elements of the ring main unit, the application provides a ring main unit.

[0005] The application provides a ring main unit adopting the following technical scheme:

[0006] The ring main unit comprises a box body, a plurality of cabinet bodies arranged in the box body, electrical elements for ensuring stable operation of a power system arranged in the cabinet bodies, control buttons for controlling the electrical elements arranged on surfaces of the cabinet bodies, protective covers arranged on the control buttons for isolating air, and maintenance windows arranged on the cabinet bodies and capable of directly observing the internal electrical elements.

[0007] By adopting the above technical scheme, the protective covers are arranged on the control buttons on the surfaces of the cabinet bodies to avoid the entry of the external salt mist into the cabinet bodies through the gaps between the control buttons and the cabinet bodies, so that the internal electrical elements of the cabinet bodies are prevented from being corroded as much as possible, and the service life of the internal electrical elements is increased. In addition, the operation of the internal electrical elements can be directly observed through the maintenance windows, so that the number of times of opening the covers for maintenance by the workers is reduced, and the number of times of contact between the internal electrical elements and the external air is reduced.

[0008] Optionally, a partition plate is arranged in the box body, the partition plate and the inner wall of the box body cooperatively form an installation chamber and a filtering chamber, a plurality of cabinet bodies for installing the electrical elements are arranged in the installation chamber, a filtering air pipe for filtering air is arranged in the filtering chamber, an air inlet pipe is arranged on the partition plate and connected with one end of the filtering air pipe, and an air inlet pipe is arranged in the filtering chamber and connected with the filtering air pipe.

[0009] By adopting the above technical scheme, the external cold air flows into the filtering air pipe, so that the salt in the air flowing into the filtering air pipe is fully absorbed, and the treated air flows into the installation chamber through the air inlet pipe and exchanges heat with the cabinet bodies, so that the cabinet bodies can be effectively prevented from being corroded during heat dissipation and ventilation, and the service life of the internal electrical elements is improved.

[0010] Optionally, the filter air duct comprises a plurality of filter tubes arranged in a staggered manner on the partition plate, a filter plate is arranged in the filter tube, a reaction tank is formed in the filter plate, and an adsorbent for adsorbing salt is arranged in the reaction tank.

[0011] By adopting the above technical scheme, the salt or impurities in the air flow in the filter air duct are adsorbed after passing through the filter plate, and the filtering effect is effectively improved and the salt in the air is reduced by arranging a plurality of filter tubes arranged in a staggered manner.

[0012] Optionally, a clamping groove is formed in the filter tube, and the filter plate extends into the clamping groove.

[0013] By adopting the above technical scheme, the filter plate is clamped with the inner wall of the filter tube, so that misalignment or gap of the filter plate is avoided, and the air filtration is insufficient.

[0014] Optionally, a sealing hole is formed in the filter tube, a sealing block is arranged on the filter plate, the sealing block extends into the sealing hole, and an observation window is arranged on the sealing block.

[0015] By adopting the above technical scheme, the sealing block and the sealing hole can avoid air leakage in the filter tube, and the filter plate can be pulled out of the filter tube by pulling the sealing block, so that the filter plate can be quickly replaced.

[0016] Optionally, the filter air duct further comprises a cold air duct for sequentially connecting the filter tubes arranged in a staggered manner, and an adsorbent is arranged on the inner wall of the cold air duct.

[0017] By adopting the above technical scheme, the staggered arrangement of the filter tubes makes the connected cold air duct have a plurality of curved portions, and the number of collisions between the air in the cold air duct and the inner wall of the cold air duct increases, so that the filtering effect of the adsorbent in the cold air duct on the air is improved.

[0018] Optionally, a plurality of air outlet pipes are arranged in the installation chamber, and a negative pressure fan is arranged in the air outlet pipe.

[0019] By adopting the above technical scheme, cold air enters the installation chamber from the air inlet pipe, hot air in the installation chamber is taken out from the air outlet pipe, and air circulation is formed in the installation chamber by the negative pressure fan, so that the heat exchange rate in the installation chamber is increased.

[0020] Optionally, a one-way valve is arranged in the air outlet pipe.

[0021] By adopting the above technical scheme, the one-way valve can prevent untreated air from entering the installation chamber and causing corrosion of the equipment in the installation chamber.

[0022] Optionally, an air filter screen is arranged in the air inlet pipe, and an air inlet fan is arranged on one side of the air filter screen.

[0023] By adopting the above technical scheme, the air flow speed in the air inlet pipe is increased by the air inlet fan, the internal heat exchange rate is improved, and the air is preliminarily filtered by the air filter screen.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Can effectively avoid the cabinet body from being corroded during heat dissipation and ventilation, and improve the service life of internal electrical components;

[0026] 2. The air circulation in the installation chamber is formed by the negative pressure fan, and the heat exchange rate in the installation chamber is increased. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application;

[0028] Figure 2 is a schematic diagram of the overall structure of embodiment 2 of the present application, mainly embodying the filter chamber;

[0029] Figure 3 is Figure 2 a schematic diagram of the partial cross-sectional structure along the A-A plane in

[0030] Figure 4 is Figure 2 a schematic diagram of the partial cross-sectional structure along the B-B plane in

[0031] BRIEF DESCRIPTION OF DRAWINGS: 1, box body; 2, cabinet body; 201, control cabinet; 202, incoming line cabinet; 203, comprehensive cabinet; 3, control button; 4, air exchange hole; 5, protective cover; 6, cabinet door; 7, maintenance window; 8, partition; 9, installation chamber; 10, filter chamber; 11, filter air pipe; 12, air inlet pipe; 13, air inlet pipe; 14, air filter screen; 15, air inlet fan; 16, fan power supply; 17, filter pipe; 18, cold air pipe; 19, sealing block; 20, filter plate; 21, reaction tank; 22, reaction hole; 23, clamping groove; 24, observation window; 25, air outlet pipe; 26, one-way valve; 27, negative pressure fan. DETAILED DESCRIPTION

[0032] The following will be combined with the Figure 1 - attached Figure 4 , the present application is further described in detail.

[0033] Embodiment 1:

[0034] A ring network box, referring to Figure 1 , comprising a box body 1, four cabinet bodies 2 arranged and placed in the box body 1, the cabinet bodies 2 comprising a control cabinet 201, an incoming line cabinet 202 and a comprehensive cabinet 203.

[0035] Control cabinet 201 is used to control the operation of integrated cabinet 203, incoming line cabinet 202 is used to connect external lines and extend the circuit into integrated cabinet 203, and integrated cabinet 203 is used to control and protect the circuit.

[0036] Several control buttons 3 are fixedly connected to the integrated cabinet 203. The control buttons 3 are used to turn the integrated cabinet 203 on or off. Several ventilation holes 4 are opened on the lower side wall of the integrated cabinet 203. The integrated cabinet 203 exchanges heat with the outside air through the ventilation holes 4, thereby reducing the heat of the electrical components during operation.

[0037] A protective cover 5 is fixedly connected to the integrated cabinet 203, and the protective cover 5 covers the component button. The protective cover 5 is used to isolate the control button 3 from the outside air.

[0038] The control cabinet 201 is rotatably connected to a cabinet door 6, which has an inspection window 7. Maintenance personnel can directly observe the internal electrical components through the inspection window 7.

[0039] Example 2:

[0040] A ring network box, referring to Figure 2 , Figure 3 The difference from Embodiment 1 is that a partition 8 is fixedly connected inside the housing 1. The partition 8 cooperates with the inner wall of the housing 1 to divide the housing 1 into an installation chamber 9 and a filter chamber 10, wherein the cabinet 2 is installed in the installation chamber 9. An air inlet pipe 12 is fixedly connected through the side wall of the housing 1 at the filter chamber 10, and an air inlet pipe 13 is fixedly connected through the partition 8. The air inlet pipe 12 and the air inlet pipe 13 are connected through a filter air pipe 11, which is used to filter the air flowing in from the inlet pipe 12.

[0041] Reference Figure 2 An air filter 14 is fixedly connected to one end of the air inlet duct 12 away from the filter chamber 10. An air intake fan 15 is fixedly connected to one end of the air inlet duct 12 inside the filter chamber 10. The other end of the air intake fan 15 is fixedly connected to the filter duct 11. A fan power supply 16 is fixedly connected inside the filter chamber 10. The fan power supply 16 is connected to the air intake fan 15 via wires and provides operating power to the air intake fan 15.

[0042] The filter duct 11 includes several filter groups. Each filter group includes two staggered filter tubes 17 fixedly connected to the partition plate 8 and a cold air duct 18 connecting the two filter tubes 17. A sealing hole is provided on the side wall of the filter tube 17, and a sealing block 19 is slidably connected in the sealing hole. The sealing block 19 abuts against the inner wall of the sealing hole.

[0043] Reference Figure 3A filter plate 20 is fixedly connected to the sealing block 19. A reaction tank 21 is formed inside the filter plate 20, and several reaction holes 22 are formed on the inner walls of opposite sides of the reaction tank 21. Activated carbon for adsorbing salts is placed inside the reaction tank 21. A locking groove 23 is formed inside the filter tube 17, and the filter plate 20 extends into the locking groove 23 and abuts against the bottom of the locking groove 23. After the filter plate 20 is installed in place, the bottom of the locking groove 23 cooperates with the filter plate 20 to seal the reaction tank 21.

[0044] An observation window 24 is provided on the side of the sealing block 19 away from the filter plate 20. The observation window 24 includes an observation hole that passes through the sealing block 19 and communicates with the reaction tank 21. Glass plates are fixedly connected to the inner wall of the observation hole at both openings.

[0045] Reference Figure 2 , Figure 3 Several filter groups are connected by a cold air duct 18. After the cold air duct 18 is installed in place, it bends in an "S" shape to increase the collision between the air and the inner wall of the cold air duct 18. At the same time, activated carbon reagent is evenly coated on the inner wall of the cold air duct 18. One end of the filter duct 11 is fixedly connected to the air intake fan 15 through the cold air duct 18, and the other end is connected to the air intake pipe 13 through the cold air duct 18.

[0046] Reference Figure 3 , Figure 4 Several air outlet pipes 25 are fixedly installed through the side wall of the housing 1 at the installation chamber 9. One-way valves 26 are fixedly connected to one end of the air outlet pipes 25 away from the housing 1, and negative pressure fans 27 are fixedly connected to the other end of the air outlet pipes 25. The fan power supply 16 is electrically connected to the negative pressure fans 27 through wires.

[0047] The principle of Embodiment 2 of this application is as follows: the fan power supply 16 provides power to the intake fan 15 and the negative pressure fan 27, so that the intake fan 15 and the negative pressure fan 27 are started. The negative pressure fan 27 extracts the hot air in the box 1, and the intake fan 15 introduces cold air from the outside into the box 1 and the output airflow is discharged from the air outlet duct 25, thereby forming a heat exchange air circulation in the box 1.

[0048] When outside air enters the housing 1, it passes through the air filter 14 to initially filter larger particles such as dust. Subsequently, the air flows through the intake fan 15 into the filter duct 11 of the filter assembly connected to it. The air flows along the cold air duct 18 and collides with the inner wall of the cold air duct 18, so that the air comes into full contact with the activated carbon reagent on the inner wall of the cold air duct 18 and reacts, thereby removing salt spray and water vapor from the air.

[0049] When the air flows into the filtering tube 17 through the cold air tube 18, the air first flows through the reaction holes 22, so that the air column flowing into the reaction groove 21 is small, and can fully contact and react with the activated carbon reagent in the reaction groove 21. Then, the air enters into the cold air tube 18 again through the reaction holes 22, and reaches the next filtering group, so that the flowing air is filtered multiple times, so as to ensure that the water vapor and salt in the air are completely removed. Finally, the air enters into the installation chamber 9 through the cold air tube 18.

[0050] The embodiments of the present specific embodiment are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, wherein the same parts are denoted by the same reference numerals. Therefore, any equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A ring main unit comprising a housing (1), characterized in that: The enclosure (1) contains several cabinets (2) arranged in a row. The cabinets (2) contain electrical components for ensuring the stable operation of the power system. The surface of the cabinets (2) is provided with control buttons (3) for controlling the electrical components. The control buttons (3) are covered with protective covers (5) for isolating air. The cabinets (2) are provided with inspection windows (7) that allow direct observation of the internal electrical components. The housing (1) is provided with a partition (8), which cooperates with the inner wall of the housing (1) to form an installation chamber (9) and a filter chamber (10). The installation chamber (9) is provided with a number of cabinets (2) for installing electrical components. The filter chamber (10) is provided with a filter duct (11) for filtering air. An air inlet pipe (13) is provided on the partition (8) and is connected to the filter duct (11). An air inlet pipe (12) is provided in the filter chamber (10) and is connected to the filter duct (12). The filter duct (11) includes several filter tubes (17) arranged in a staggered manner on the partition (8). A filter plate (20) is provided inside the filter tube (17). A reaction tank (21) is opened inside the filter plate (20). An adsorbent for adsorbing salt is provided inside the reaction tank (21). The installation chamber (9) is equipped with several air outlet pipes (25), and a negative pressure fan (27) is installed in each air outlet pipe (25).

2. The ring box of claim 1, wherein: The filter tube (17) has a slot (23) inside, and the filter plate (20) extends into the slot (23).

3. The ring box of claim 2, wherein: The filter tube (17) has a sealing hole, and the filter plate (20) has a sealing block (19) that extends into the sealing hole. The sealing block (19) has an observation window (24).

4. The ring box of claim 3, wherein: The filter duct (11) also includes a cold air duct (18) for sequentially connecting the staggered filter tubes (17), and the inner wall of the cold air duct (18) is provided with an adsorbent.

5. A ring main unit according to claim 4, characterized in that: A one-way valve (26) is installed inside the air outlet pipe (25).

6. A ring main unit according to claim 1, characterized in that: An air filter (14) is installed inside the air inlet pipe (12), and an air intake fan (15) is installed on one side of the air filter (14).

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