An air-insulated ring main unit

Abstract

The present invention relates to the technical field of ring network cabinets, and discloses an air-insulated ring network cabinet, comprising: a cabinet body, wherein two opposite sides of the cabinet body are respectively provided with an air inlet and an air outlet, and the air outlet and the air inlet are distributed at different heights; an air intake assembly, wherein the air intake assembly is connected to the air inlet, and the air intake assembly introduces low-temperature air into the interior of the cabinet body through the air inlet; a dehumidifier, wherein the dehumidifier is fixedly installed in the cabinet body, and the dehumidifier is connected to the air outlet end of the air intake assembly; a filter assembly, wherein the filter assembly includes a filter element, which is rotatably installed in the middle of the air inlet, and filters the air passing through the air inlet through the filter element; and a drive assembly, wherein the drive assembly is connected to the air intake assembly, and the drive assembly drives the air intake assembly to operate and the filter element to rotate. The present invention can effectively ensure that the air entering the interior of the network cabinet is dry, thereby making the entire ring network cabinet applicable to more different usage scenarios, effectively improving the scope of application.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main unit (RMU), and more particularly to an air-insulated RMU. Background Art

[0002] Air-insulated ring main unit (RMU) is a medium-voltage power distribution equipment that uses dry air as the insulating medium. It is environmentally friendly, safe, and reliable, and is widely used in urban power distribution networks, industrial power distribution, and other fields. Compared with traditional SF6 gas-insulated RMUs, air-insulated RMUs have the following advantages: environmental protection, higher safety, and economy.

[0003] For example, in the prior art, the patent document with the announcement number CN110165591B discloses a ring network cabinet, including a cabinet body, a door panel, a heat dissipation structure, a cleaning structure, a filtering structure, a first sealing structure and a second sealing structure; through the cleaning structure installed on the top of the cabinet body, it can not only collect rainwater on rainy days to dissipate heat for the cabinet body, but also can promptly clean up the leaves that have fallen on the top of the cabinet body, thereby avoiding the leaves clogging the cleaning structure to dissipate heat for the cabinet body, and while the cleaning structure is working, it can drive the heat dissipation structure on the top of the cabinet body to work synchronously, and through the work of the heat dissipation structure, it can quickly realize the air exchange between the inside and outside of the cabinet body, thereby realizing rapid heat dissipation inside the cabinet body, thereby avoiding the high-power electrical components inside the cabinet body from spontaneous combustion due to excessive temperature, and through the work of the heat dissipation structure, it can also react to the cleaning structure, so that the heat dissipation effect of the cleaning structure is better.

[0004] At present, most existing air-insulated ring network cabinets need to be installed in dry areas during use to ensure that the air inside them is always dry. Otherwise, the air inside them is prone to moisture, which will lead to poor insulation and cause danger. This will undoubtedly greatly limit their use places. Based on this, when used in places with high air humidity, the existing ring network cabinets are easily susceptible to moisture during the ventilation and heat dissipation process, making them very unsafe to use. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an air-insulated ring main unit (RMU) to solve the problem that the existing RMU is easily affected by moisture during ventilation and heat dissipation when used in places with high air humidity.

[0006] The present invention provides the following technical solution: an air-insulated ring network cabinet, comprising: a cabinet body, wherein two opposite sides of the cabinet body are respectively provided with an air inlet and an air outlet, and the air outlet and the air inlet are distributed at different heights; an air intake assembly, wherein the air intake assembly is connected with the air inlet, and the air intake assembly introduces low-temperature air into the interior of the cabinet body through the air inlet; a dehumidifier, wherein the dehumidifier is fixedly installed in the cabinet body, and the dehumidifier is connected with the air outlet end of the air intake assembly; a filter assembly, wherein the filter assembly includes a filter element, the filter element is rotatably installed in the middle of the air inlet, and the air passing through the air inlet is filtered by the filter element; a drive assembly, wherein the drive assembly is connected with the air intake assembly, and the air intake assembly is driven to operate and the filter element is driven to rotate by the drive assembly.

[0007] Furthermore, the air intake assembly includes an air intake pipe and fan blades. The air intake pipe is connected between the air inlet and the air inlet end of the dehumidifier. A partition is installed in the middle of the air intake pipe, and the partition divides the middle of the air intake pipe into an air intake chamber and a cleaning chamber. One end of the air intake chamber is connected to the air inlet, and the other end is connected to the air inlet end of the dehumidifier. The fan blades are rotatably installed in the middle of the air intake chamber, and the suction surface of the fan blades faces the air inlet.

[0008] Among them, a pump air component and a backflush orifice plate are fixedly installed in the cleaning chamber, the inlet end of the backflush orifice plate is connected to the pump air component, and the outlet end of the backflush orifice plate faces the filter element, realizing the backflush clearing function.

[0009] An induction plate is rotatably installed in the air intake chamber, and a transmission mechanism is provided in the air intake pipe. When the induction plate senses the change of airflow in the air intake chamber, the induction plate swings and triggers the air pump assembly through the transmission mechanism, so that the air pump assembly injects air into the back-blowing orifice plate, so that the back-blowing has the function of automatic start and stop.

[0010] Furthermore, the filter assembly includes a bracket and an end cover. The bracket is rotatably installed in the middle of the air inlet, and the rotating shaft of the bracket passes through the fan blade rotating shaft. The filter element is installed in the middle of the bracket and can rotate synchronously with the bracket. At the same time, the filter element covers the air inlet. The end cover is detachably clamped on the air inlet, and the filter element is limited by the end cover to facilitate the disassembly and replacement of the filter element.

[0011] Furthermore, the drive assembly includes a motor, a first pulley, a first belt, a reducer, a second pulley and a second belt. The motor is fixedly mounted on the surface of the intake pipe, and the motor output shaft and the fan blade shaft are transmitted through the first pulley and the first belt. The reducer is fixedly connected to the surface of the intake pipe, the output shaft of the motor is coaxially connected to the reducer input shaft, and the output shaft of the reducer and the bracket shaft are transmitted through the second pulley and the second belt, and the fan blades are driven to rotate through the drive assembly.

[0012] Furthermore, the air pump assembly includes a cylinder liner, a piston, an air outlet pipe and a valve. The cylinder liner is fixedly installed in the clean chamber, and the piston is slidably installed in the cylinder liner. An air inlet hole is provided on the surface of the piston, and a one-way valve is provided in the middle of the air inlet hole. Under the action of the one-way valve, external air can only enter the middle of the cylinder liner from the clean chamber. The air outlet pipe is connected to the air outlet hole of the cylinder liner. The valve is installed on the air outlet pipe. A connecting rod is provided between the valve and the piston. One end of the connecting rod is rotatably connected to the switch knob of the valve, and the other end is transmission connected to the piston. When the piston moves close to the inner side of the cylinder liner, the piston will drive the switch knob of the valve to open through the connecting rod, so that the air pump assembly can supply air to the backblowing orifice plate.

[0013] Furthermore, the driving assembly also includes a first gear, a second gear, a reciprocating screw and a threaded seat. The first gear is arranged in the cleaning chamber and fixedly mounted on the rotating shaft of the bracket. The reciprocating screw is rotatably mounted in the cleaning chamber, and the second gear is fixedly mounted on the surface of the reciprocating screw. At the same time, the first gear can engage with the second gear. The threaded seat is threadedly mounted on the surface of the reciprocating screw, and the lower end of the threaded seat is fixedly connected to the piston. The end of the connecting rod is rotatably connected to the lower end of the threaded seat. The connecting rod is connected to the piston through the threaded seat, and the pump air assembly is driven to work through the driving assembly.

[0014] Furthermore, the transmission mechanism includes a sliding sleeve, a first spring and a second spring. The sliding sleeve is fixedly installed in the cleaning chamber. The reciprocating screw can slide back and forth along its axis, and one end of the reciprocating screw is slidably inserted in the sliding sleeve, and the other end extends through the partition to the air intake chamber and contacts the induction plate. The first spring and the second spring are both compression springs, and the first spring is installed between the inner end of the sliding sleeve and the end of the reciprocating screw, and the second spring is installed between the induction plate and the fan blade shaft bearing. When the wind speed in the air intake pipe decreases, the second spring can push the induction plate to rotate, and drive the reciprocating screw to slide through the induction plate, so that the first gear and the second gear are engaged, and the pump air assembly is triggered through the transmission mechanism.

[0015] Furthermore, a window is provided on the end cover, and the window corresponds to the entrance of the air inlet chamber. A dust exhaust channel is fixedly installed on the end cover, and the dust exhaust channel corresponds to the mouth of the cleaning chamber. The dust backblown off the filter element can be discharged from the dust exhaust channel, which is convenient for dust collection.

[0016] Technical effects and advantages of the present invention:

[0017] 1. The ring network cabinet proposed in the present invention provides a filter component at the air inlet of the dehumidifier. The external air is filtered and dehumidified before being input into the ring network cabinet, which can effectively ensure that the air entering the ring network cabinet is dry, meeting the requirements of the ring network cabinet in humid environments, thereby making the entire ring network cabinet applicable to more different usage scenarios and effectively improving the scope of application.

[0018] 2. The ring network cabinet proposed in the present invention is provided with a rotatable filter element, a pump air assembly and a back-blowing orifice plate. When the motor drives the fan blades to rotate and delivers cooling air to the cabinet body, it drives the pump air assembly to operate and injects air into the back-blowing orifice plate. Since the filter element is in a rotating state, the airflow discharged by the back-blowing orifice plate can back-blow the filter element, prompting the dust generated by the filtration to separate from the filter element, thereby achieving the effect of automatic dust removal and blockage clearing, ensuring unobstructed air intake, and extending the service life of the filter element.

[0019] 3. The ring network cabinet proposed in the present invention is provided with an induction plate and a transmission assembly. During use, when too much dust accumulates on the surface of the filter element and affects the air intake volume of the air intake assembly, the wind speed in the air intake pipe will decrease, thereby triggering the action of the induction plate. The induction plate pushes the reciprocating screw to move to make the second gear engage with the first gear. At this time, the rotating shaft of the bracket that drives the filter element to rotate will synchronously drive the reciprocating screw to move, and then drive the piston to move to generate high-pressure air in the cylinder sleeve, and when the piston moves close to the inner end of the cylinder sleeve, it will also synchronously open the valve on the outlet pipe connected to the outlet end of the cylinder sleeve to quickly release the high-pressure air inside the cylinder sleeve to backflush and clean the filter element, thereby realizing automatic start and stop control of the backflush function, and ensuring stable and reliable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the ring network cabinet proposed by the present invention Figure 1 ;

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the ring network cabinet proposed by the present invention Figure 2 ;

[0022] Figure 3 Schematic diagram of the three-dimensional structure of the ring network cabinet proposed by the present invention Figure 3 ;

[0023] Figure 4 for Figure 3 A in the middle is an enlarged structural diagram;

[0024] Figure 5 for Figure 4 The enlarged structural diagram at B in the middle;

[0025] Figure 6 This is a schematic diagram of the internal structure of the air intake pipe proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the front cross-section structure of the air intake pipe proposed by the present invention.

[0027] The accompanying drawings are marked as follows: 1. cabinet; 2. air inlet; 3. air outlet; 4. dehumidifier; 5. filter element; 6. air inlet pipe; 7. fan blade; 8. partition; 9. air inlet chamber; 10. cleaning chamber; 11. bracket; 12. end cover; 13. window; 14. dust exhaust channel; 15. cylinder liner; 16. piston; 17. air outlet pipe; 18. valve; 19. backflush orifice plate; 20. connecting rod; 21. motor; 22. reducer; 23. first pulley; 24. first belt; 25. second pulley; 26. second belt; 27. first gear; 28. second gear; 29. ​​reciprocating screw; 30. threaded seat; 31. induction plate; 32. sliding sleeve; 33. first spring; 34. second spring. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples and are not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1-Figure 7 The present invention provides an air-insulated ring main unit, comprising: a cabinet body 1, wherein two opposite sides of the cabinet body 1 are respectively provided with an air inlet 2 and an air outlet 3, and the air outlet 3 is arranged at a higher level than the air inlet 2. Figure 1 、 Figure 2 ;

[0030] The air intake assembly is connected to the air inlet 2, and the air intake assembly introduces low-temperature air into the cabinet 1 through the air inlet 2;

[0031] Dehumidifier 4, dehumidifier 4 is fixedly installed in cabinet 1, and dehumidifier 4 is connected to the air outlet end of the air inlet component;

[0032] The filter assembly includes a filter element 5, which is rotatably installed in the middle of the air inlet 2 and filters the air passing through the air inlet 2;

[0033] The driving assembly is connected to the air intake assembly and drives the air intake assembly to operate and the filter element 5 to rotate.

[0034] refer to Figure 4The air intake assembly includes an air intake pipe 6 and a fan blade 7. The air intake pipe 6 is connected between the air inlet 2 and the air inlet end of the dehumidifier 4. A partition 8 is installed in the middle of the air intake pipe 6, and the partition 8 divides the middle of the air intake pipe 6 into an air intake cavity 9 and a clean cavity 10. The surface of the partition 8 is provided with perforations, and the air in the air intake cavity 9 can enter the clean cavity 10 through the perforations. One end of the air intake cavity 9 is connected with the air inlet 2, and the other end is connected with the air inlet end of the dehumidifier 4. The fan blade 7 is rotatably installed in the middle of the air intake cavity 9, and the suction surface of the fan blade 7 faces the air inlet 2.

[0035] Specifically, such as Figure 6 As shown, the filter assembly also includes a bracket 11 and an end cover 12. The bracket 11 is rotatably installed in the middle of the air inlet 2, and the rotating shaft of the bracket 11 passes through the rotating shaft of the fan blade 7. The filter element 5 is installed in the middle of the bracket 11 and can rotate synchronously with the bracket 11. At the same time, the filter element 5 covers the air inlet 2, and the end cover 12 is detachably clamped on the air inlet 2, and the filter element 5 is limited by the end cover 12.

[0036] like Figure 4 As shown, the drive assembly includes a motor 21, a first pulley 23, a first belt 24, a reducer 22, a second pulley 25 and a second belt 26. The motor 21 is fixedly mounted on the surface of the air intake pipe 6, and the output shaft of the motor 21 and the rotating shaft of the fan blade 7 are transmitted through the first pulley 23 and the first belt 24. The reducer 22 is fixedly connected to the surface of the air intake pipe 6, and the output shaft of the motor 21 is coaxially connected to the input shaft of the reducer 22. The output shaft of the reducer 22 and the rotating shaft of the bracket 11 are transmitted through the second pulley 25 and the second belt 26.

[0037] When in use, the fan blades 7 rotate and external air is sucked in from the air inlet 2 through the air intake assembly. The air will enter the cabinet 1 through the dehumidifier 4. The dehumidifier 4 can remove moisture from the air and ensure that the air input into the cabinet 1 is dry, so that the entire ring network cabinet can be used in humid areas. At the same time, the filter assembly will remove dust from the incoming air. It should be noted that the dehumidifier 4 is a mature product of the existing technology and will not be described here.

[0038] The ring network cabinet proposed in the present invention, by arranging a filter component at the air inlet of the dehumidifier 4, the external air is filtered and dehumidified and then input into the ring network cabinet, which can effectively ensure that the air entering the ring network cabinet is dry, and meet the requirements of the ring network cabinet in a humid environment, so that the entire ring network cabinet can be applied to more different usage scenarios, effectively improving the scope of application.

[0039] In this embodiment, a pump air assembly and a backflush orifice plate 19 are fixedly installed in the cleaning chamber 10, and the inlet end of the backflush orifice plate 19 is connected to the pump air assembly. Figure 6A column of exhaust ports is provided on the surface of the back-blowing orifice plate 19, the outlet end of the back-blowing orifice plate 19 faces the filter element 5, a window 13 is provided on the end cover 12, and the window 13 corresponds to the inlet position of the air inlet chamber 9, a dust exhaust channel 14 is fixedly installed on the end cover 12, and the dust exhaust channel 14 corresponds to the mouth of the cleaning chamber 10, and the dust backblown off the filter element 5 can be discharged from the dust exhaust channel 14.

[0040] When the motor 21 drives the fan blades 7 to rotate, the bracket 11 will also rotate synchronously, so that the filter element 5 is in a rotating state, and the dust in the air is intercepted by the filter element 5. Since the filter element 5 always keeps rotating, it can prevent the filter element 5 from being severely blocked locally, ensuring that sufficient air intake enters the intake pipe 6.

[0041] The ring main unit proposed in the present invention is provided with a rotatable filter element 5, a pump air assembly and a back-blowing orifice plate 19, as shown in FIG. Figure 7 As shown, the motor 21 drives the fan blades 7 to rotate, and when delivering cooling air to the cabinet 1, it drives the pump air component to operate and injects air into the back-blowing orifice plate 19. Since the filter element 5 is in a rotating motion state, the airflow discharged by the back-blowing orifice plate 19 can back-blow the filter element 5, prompting the dust generated by the filtration to separate from the filter element 5, achieving the effect of automatic dust removal and blockage clearing, ensuring smooth air intake, and extending the service life of the filter element 5.

[0042] In this embodiment, a sensing plate 31 is rotatably installed in the air intake chamber 9, and a transmission mechanism is provided in the air intake pipe 6. When the sensing plate 31 senses the change of airflow in the air intake chamber 9, the sensing plate 31 swings and triggers the pump air component through the transmission mechanism, causing the pump air component to inject air into the back-blowing orifice plate 19.

[0043] refer to Figure 5 The pump air assembly includes a cylinder liner 15, a piston 16, an air outlet pipe 17 and a valve 18. The cylinder liner 15 is fixedly installed in the clean chamber 10, and the piston 16 is slidably installed in the cylinder liner 15. An air inlet hole is provided on the surface of the piston 16, and a one-way valve is provided in the middle of the air inlet hole. Under the action of the one-way valve, external air can only enter the middle of the cylinder liner 15 from the clean chamber 10. The air outlet pipe 17 is connected to the air outlet hole of the cylinder liner 15. The valve 18 is installed on the air outlet pipe 17. A connecting rod 20 is provided between the valve 18 and the piston 16. One end of the connecting rod 20 is rotatably connected to the switch knob of the valve 18, and the other end is transmission connected to the piston 16. When the piston 16 moves close to the inner side of the cylinder liner 15, the piston 16 will drive the switch knob of the valve 18 to open through the connecting rod 20.

[0044] Among them, the driving assembly also includes a first gear 27, a second gear 28, a reciprocating screw 29 and a threaded seat 30. The first gear 27 is arranged in the cleaning chamber 10 and is fixedly mounted on the rotating shaft of the bracket 11. The reciprocating screw 29 is rotatably mounted in the cleaning chamber 10, and the second gear 28 is fixedly mounted on the surface of the reciprocating screw 29. At the same time, the first gear 27 can engage with the second gear 28. The threaded seat 30 is threadedly mounted on the surface of the reciprocating screw 29, and the lower end of the threaded seat 30 is fixedly connected to the piston 16. The end of the connecting rod 20 is rotatably connected to the lower end of the threaded seat 30, and the connecting rod 20 is transmission-connected to the piston 16 through the threaded seat 30.

[0045] The transmission mechanism includes a sliding sleeve 32, a first spring 33 and a second spring 34. The sliding sleeve 32 is fixedly installed in the cleaning chamber 10. The reciprocating screw 29 can slide back and forth along its axis, and one end of the reciprocating screw 29 is slidably inserted in the sliding sleeve 32, and the other end extends through the partition 8 to the air intake chamber 9 and contacts the induction plate 31. The first spring 33 and the second spring 34 are both compression springs, and the first spring 33 is installed between the inner end of the sliding sleeve 32 and the end of the reciprocating screw 29, and the second spring 34 is installed between the induction plate 31 and the shaft bearing of the fan blade 7. When the wind speed in the air intake pipe 6 decreases, the second spring 34 can push the induction plate 31 to rotate, and drive the reciprocating screw 29 to slide through the induction plate 31, so that the first gear 27 and the second gear 28 are engaged.

[0046] like Figure 5 As shown, under normal conditions, the airflow in the intake pipe 6 is relatively large, and the airflow pushes the induction plate 31 to flip, the induction plate 31 compresses the second spring 34, and the induction plate 31 is separated from the end of the reciprocating screw 29. Under the action of the first spring 33, the first gear 27 and the second gear 28 are in a staggered separation state, so that the piston 16 stops moving, reducing the rotation resistance of the bracket 11 and the filter element 5. Among them, the induction plate 31 is affected by the turbulence of the airflow. See reference: Wu Zhicheng. Experimental study on the influence of airflow turbulence on the aerodynamic characteristics of the dish paraboloid [J]. Journal of Nanjing University of Aeronautics and Astronautics, 1990, (03): 119-123.

[0047] By setting the induction plate 31 and the transmission assembly, during use, when too much dust accumulates on the surface of the filter element 5 and affects the air intake of the air intake assembly, the wind speed in the air intake pipe 6 will decrease, thereby triggering the action of the induction plate 31, and the induction plate 31 pushes the reciprocating screw 29 to move so that the second gear 28 is engaged with the first gear 27. At this time, the rotating shaft of the bracket 11 that drives the filter element 5 to rotate will synchronously drive the reciprocating screw 29 to move, thereby driving the piston 16 to move to generate high-pressure air in the cylinder sleeve 15, and the piston 1 When 6 moves close to the inner end of the cylinder sleeve 15, it will also open the valve 18 on the outlet pipe 17 connected to the outlet end of the cylinder sleeve 15 synchronously to quickly release the high-pressure air inside the cylinder sleeve 15 to back-blow and clean the filter element 5, realize the automatic start and stop control of the back-blow function, and ensure the stable and reliable operation of the equipment. The back-blow principle can be found in the reference: Wang Zhanyong, Li Qingjun, Li Yingqiu. Back-blow design of filter element recovery system [J]. Modern Paint and Coating, 2012, 15(07): 46-47.

[0048] Working principle: First, start the motor 21, and the motor 21 will drive the fan blades 7 to rotate through the first pulley 23 and the first belt 24. After the fan blades 7 rotate, the external air will be sucked into the air inlet cavity 9 of the air inlet pipe 6 from the air inlet 2, and then sent to the dehumidifier 4. After that, the dehumidifier 4 removes moisture and sends it into the cabinet 1, and finally it is discharged from the air outlet 3 to achieve heat dissipation inside the cabinet 1.

[0049] During the entire working process, the dehumidifier 4 can effectively remove moisture from the air, thereby keeping the interior of the cabinet 1 dry and ensuring insulation, so that the entire ring network cabinet can operate in a relatively humid environment, greatly improving its scope of application.

[0050] At the same time, during use, since a filter element 5 is installed at the air inlet 2, it can intercept dust in the air entering the cabinet 1, thereby ensuring the cleanliness of the interior of the cabinet 1, avoiding electrical faults caused by dust, and making the entire ring network cabinet safer to use.

[0051] In addition, during use, when the motor 21 is running, it will also drive the reducer 22 to operate. The reducer 22 will drive the bracket 11 to rotate through the second pulley 25 and the second belt 26. The rotation of the bracket 11 will synchronously drive the filter element 5 to rotate, thereby realizing the switching of the filter element 5 in the corresponding positions of the cleaning chamber 10 and the air inlet chamber 9, ensuring that sufficient air intake enters the air inlet pipe 6.

[0052] As time goes by, when too much dust is trapped on the filter element 5, the air intake volume inside the air intake pipe 6 will be reduced, thereby reducing the wind speed in the air intake pipe 6. At this time, under the action of the second spring 34, the induction plate 31 will push the reciprocating screw rod 29 to slide toward the cleaning chamber 10 until the first gear 27 and the second gear 28 are engaged. The rotating shaft of the bracket 11 will drive the reciprocating screw rod 29 to rotate through the first gear 27 and the second gear 28, and the reciprocating screw rod 29 will drive the threaded seat 30 to move back and forth, and the cleaning chamber 10 will be cleaned. The piston 16 is driven to move back and forth. When the piston 16 moves toward the middle of the cylinder liner 15, the air inside the cylinder liner 15 is compressed and pressurized. When the piston 16 is close to the inner side of the cylinder liner 15, the piston 16 drives the switch knob of the valve 18 to open through the connecting rod 20. At this time, the high-pressure air inside the cylinder liner 15 will quickly pass through the air outlet pipe 17 and blow the part of the filter element 5 corresponding to the cleaning chamber 10 through the back-blowing orifice plate 19, thereby realizing the back-blowing cleaning function when the filter element 5 is blocked.

[0053] In summary, during the entire use process, under the action of the air intake component and the dehumidifier 4, the air entering the network cabinet can be effectively ensured to be dry. At the same time, during use, the filter component will also filter the air entering the network cabinet, thereby intercepting the dust in the air. As the filter element 5 is gradually blocked and reaches a certain degree of blockage, the back-flush function is automatically started to back-flush and clear the blockage, ensuring the air permeability of the filter element 5, so that the entire ring network cabinet can be applied to more different usage scenarios, effectively improving the scope of application.

[0054] Finally, it should be noted that the drawings of the embodiments disclosed herein only relate to structures related to the embodiments disclosed herein. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0055] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air insulated ring main unit, characterized in that: include: A cabinet body (1), wherein two opposite sides of the cabinet body (1) are respectively provided with an air inlet (2) and an air outlet (3), and the air outlet (3) and the air inlet (2) are arranged at different heights; An air intake assembly, the air intake assembly being in communication with the air inlet (2), and the air intake assembly introducing low-temperature air into the interior of the cabinet (1) through the air inlet (2); A dehumidifier (4), wherein the dehumidifier (4) is fixedly installed in the cabinet (1), and the dehumidifier (4) is connected to the air outlet end of the air inlet component; A filter assembly, the filter assembly comprising a filter element (5), the filter element (5) being rotatably mounted in the middle of the air inlet (2), and filtering air passing through the air inlet (2) through the filter element (5); A drive assembly, the drive assembly being connected to the air intake assembly and driving the air intake assembly and the filter element (5) to rotate; The air intake assembly includes an air intake pipe (6) and a fan blade (7), the air intake pipe (6) is connected between the air inlet (2) and the air inlet end of the dehumidifier (4), a partition (8) is installed in the middle of the air intake pipe (6), and the partition (8) divides the middle of the air intake pipe (6) into an air intake cavity (9) and a cleaning cavity (10), one end of the air intake cavity (9) is connected to the air inlet (2), and the other end is connected to the air inlet end of the dehumidifier (4), the fan blade (7) is rotatably installed in the middle of the air intake cavity (9), and the air suction surface of the fan blade (7) faces the air inlet (2); A pump air assembly and a back-blowing orifice plate (19) are fixedly installed in the cleaning chamber (10), the inlet end of the back-blowing orifice plate (19) is communicated with the pump air assembly, and the outlet end of the back-blowing orifice plate (19) faces the filter element (5); A sensing plate (31) is rotatably mounted in the air inlet chamber (9), and a transmission mechanism is provided in the air inlet pipe (6). When the sensing plate (31) senses a change in the air flow in the air inlet chamber (9), the sensing plate (31) swings and triggers the air pump assembly to operate through the transmission mechanism, causing the air pump assembly to inject air into the backflush orifice plate (19); The filter assembly includes a bracket (11) and an end cover (12), the bracket (11) is rotatably mounted in the middle of the air inlet (2), and the rotating shaft of the bracket (11) passes through the rotating shaft of the fan blade (7), the filter element (5) is mounted in the middle of the bracket (11) and can rotate synchronously with the bracket (11), and at the same time the filter element (5) covers the air inlet (2), the end cover (12) is detachably clamped on the air inlet (2), and the filter element (5) is limited by the end cover (12); The driving assembly includes a motor (21), a first pulley (23), a first belt (24), a reducer (22), a second pulley (25) and a second belt (26), wherein the motor (21) is fixedly mounted on the surface of the air intake pipe (6), and the output shaft of the motor (21) and the rotating shaft of the fan blade (7) are driven through the first pulley (23) and the first belt (24), the reducer (22) is fixedly connected to the surface of the air intake pipe (6), the output shaft of the motor (21) and the input shaft of the reducer (22) are coaxially connected, and the output shaft of the reducer (22) and the rotating shaft of the bracket (11) are driven through the second pulley (25) and the second belt (26).

2. The air-insulated ring main unit according to claim 1, characterized in that: The pump air assembly comprises a cylinder sleeve (15), a piston (16), an air outlet pipe (17) and a valve (18). The cylinder sleeve (15) is fixedly mounted in the clean chamber (10), and the piston (16) is slidably mounted in the cylinder sleeve (15). An air inlet hole is provided on the surface of the piston (16), and a one-way valve is provided in the middle of the air inlet hole. Under the action of the one-way valve, external air can only enter the middle of the cylinder sleeve (15) from the clean chamber (10). The air outlet pipe (17) is communicated with the air outlet hole of the cylinder sleeve (15). The valve (18) is mounted on the air outlet pipe (17). A connecting rod (20) is provided between the valve (18) and the piston (16). One end of the connecting rod (20) is rotatably connected to the switch knob of the valve (18), and the other end is transmission-connected to the piston (16). When the piston (16) moves to be close to the inner side of the cylinder sleeve (15), the piston (16) drives the switch knob of the valve (18) to open through the connecting rod (20).

3. The air-insulated ring main unit according to claim 2, characterized in that: The driving assembly further comprises a first gear (27), a second gear (28), a reciprocating screw (29) and a threaded seat (30), wherein the first gear (27) is arranged in the cleaning chamber (10) and fixedly mounted on the rotating shaft of the bracket (11), the reciprocating screw (29) is rotatably mounted in the cleaning chamber (10), and the second gear (28) is fixedly mounted on the surface of the reciprocating screw (29), and the first gear (27) can be engaged with the second gear (28), the threaded seat (30) is threadedly mounted on the surface of the reciprocating screw (29), and the lower end of the threaded seat (30) is fixedly connected to the piston (16), the end of the connecting rod (20) is rotatably connected to the lower end of the threaded seat (30), and the connecting rod (20) is transmission-connected to the piston (16) through the threaded seat (30).

4. The air-insulated ring main unit according to claim 3, characterized in that: The transmission mechanism includes a sliding sleeve (32), a first spring (33) and a second spring (34). The sliding sleeve (32) is fixedly installed in the cleaning chamber (10). The reciprocating screw (29) can slide back and forth along its axis, and one end of the reciprocating screw (29) is slidably inserted in the sliding sleeve (32), and the other end passes through the partition (8) and extends into the air intake chamber (9) and contacts the induction plate (31). The first spring (33) and the second spring (34) are both compression springs, and the first spring (33) is installed between the inner end of the sliding sleeve (32) and the end of the reciprocating screw (29). The second spring (34) is installed between the induction plate (31) and the shaft bearing of the fan blade (7). When the wind speed in the air intake pipe (6) decreases, the second spring (34) can push the induction plate (31) to rotate, and drive the reciprocating screw (29) to slide through the induction plate (31), so that the first gear (27) and the second gear (28) are engaged.

5. The air-insulated ring main unit according to claim 4, characterized in that: A window (13) is provided on the end cover (12), and the window (13) corresponds to the inlet position of the air inlet chamber (9). A dust exhaust passage (14) is fixedly mounted on the end cover (12), and the dust exhaust passage (14) corresponds to the opening position of the cleaning chamber (10). Dust backblown from the filter element (5) can be discharged from the dust exhaust passage (14).

Images