Protection device of ring main unit and protection method thereof

Abstract

The invention discloses a ring main unit protection device and method, and the device comprises a main unit, an exhaust heat dissipation unit, an air inlet heat dissipation unit, a cleaning unit and a cleaning auxiliary unit, the main unit comprises a waterproof platform, a ring main unit body fixedly connected with the top of the waterproof platform, and a rain cover fixedly connected with the top of the ring main unit body, the exhaust heat dissipation unit is fixedly communicated with the right side of the ring main unit body and used for guiding out gas in the ring main unit body, the gas inlet heat dissipation unit is fixedly communicated with the left side of the ring main unit body, the cleaning unit is used for cleaning a first filter screen plate while a second ventilation pipe ascends and descends, and the cleaning auxiliary unit is connected with the cleaning unit. And spraying and dust falling can be carried out during cleaning of the cleaning unit. According to the cleaning device, the cleaning unit and the cleaning auxiliary unit are in mechanical linkage, so that cooperative work of automatic cleaning and water mist spraying of the cleaning brush is achieved, the cleaning efficiency is improved, and synchronism of the two functions of cleaning and dust falling is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main unit protection, and in particular to a protection device and a protection method for a ring main unit. Background Art

[0002] As an important equipment in the power system, the stable operation of the ring main unit is of great significance to ensure the safe and reliable power supply of the power grid. However, in the actual operation of the ring main unit, due to the heating of the internal electrical components and the influence of the external environment, the internal temperature of the ring main unit tends to gradually increase. If the heat cannot be dissipated in time, the excessive temperature will not only accelerate the aging of the electrical components and reduce their service life, but in serious cases it may also cause safety accidents such as fire, posing a serious threat to the safe and stable operation of the power grid.

[0003] In the prior art, the ring network cabinet generally adopts a cooling fan for heat dissipation. However, after a long period of operation, dust easily accumulates in the heat dissipation channel and the filter screen. This will not only reduce the heat dissipation efficiency of the cooling fan, but may also block the heat dissipation channel, further aggravating the temperature problem inside the ring network cabinet. In order to solve this problem, the prior art attempts to link the cleaning function of the cooling fan with the filter screen, aiming to achieve simultaneous heat dissipation and cleaning. During the cleaning process, in order to reduce the impact of dust on the filter screen, the function of spraying water mist is usually introduced. However, the water mist spraying and cleaning processes in these schemes are often independent of each other and lack synchronization. This results in that during the cleaning process, the dust that has just been swept down may float again and adhere to the filter screen that has just been cleaned, thereby affecting the cleaning effect. At the same time, it is also impossible to effectively prevent the secondary adhesion of dust. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A protection device for a ring main unit, mainly comprising:

[0006] A main unit, the main unit comprising a waterproof platform, a ring network cabinet body fixedly connected to the top of the waterproof platform, and a rain cover fixedly connected to the top of the ring network cabinet body;

[0007] An exhaust heat dissipation unit, which is fixedly connected to the right side of the ring main unit body and is used to discharge the gas inside the ring main unit body;

[0008] An air intake heat dissipation unit, the air intake heat dissipation unit is fixedly connected to the left side of the ring network cabinet body, and the air intake heat dissipation unit includes a first ventilation pipe fixedly connected to the middle part of the left side of the ring network cabinet body, a second ventilation pipe adapted to slide with the inside of the first ventilation pipe, a first heat dissipation fan fixedly installed in the inside of the second ventilation pipe, a driving mechanism for driving the second ventilation pipe to move up and down, and a first filter screen fixedly installed at the outer end of the first ventilation pipe;

[0009] A cleaning unit, the cleaning unit is connected to the first ventilation pipe and the second ventilation pipe, and is used to clean the first filter screen while the second ventilation pipe is raised and lowered;

[0010] A cleaning auxiliary unit is connected to the cleaning unit and can spray to reduce dust when the cleaning unit is cleaning.

[0011] As a preferred solution of the protection device and protection method of the ring network cabinet described in the present invention, the exhaust heat dissipation unit includes a third ventilation duct fixedly connected to the middle part of the right side of the ring network cabinet body, a second cooling fan fixedly connected to the inside of the third ventilation duct, and a second filter plate fixedly connected to the outer end of the third ventilation duct.

[0012] As a preferred solution of the protection device and protection method of the ring network cabinet described in the present invention, the driving mechanism includes a vertically arranged screw rod rotatably connected to the inside of the second ventilation duct and a driving motor fixedly connected to the top of the second ventilation duct, the bottom output end of the driving motor is fixedly connected to the top of the screw rod, and the screw rod spirally passes through the second ventilation duct.

[0013] As a preferred solution of the protection device and protection method of the ring main unit of the present invention, one end of the second ventilation pipe is movably fitted to the inner side of the first filter screen.

[0014] As a preferred solution of the protection device and protection method of the ring network cabinet of the present invention, wherein: the cleaning unit comprises an L-shaped plate fixedly connected to the top of the first ventilation pipe and placed inverted, and a lifting rod fixedly connected to the bottom of the second ventilation pipe;

[0015] A rotating shaft is rotatably penetrated through the vertical plate of the L-shaped plate through a bearing, a gear is fixedly sleeved on the outside of the rotating shaft, a mounting plate is fixedly connected to one end of the rotating shaft facing the first filter screen plate, a cleaning brush is fixedly connected to the side of the mounting plate away from the rotating shaft, one side of the cleaning brush is movably fitted with the surface of the first filter screen plate, a first water flow hole connected at both ends is opened inside the rotating shaft, a second water flow hole is opened inside the mounting plate, one end of the first water flow hole is sealed and connected to the second water flow hole, a plurality of nozzles are connected to the front and rear sides of the mounting plate, and the nozzles are connected to the second water flow hole;

[0016] The bottom end of the lifting rod slides through the first ventilation pipe and is fixedly connected to an L-shaped rod. The top end of the vertical rod of the L-shaped rod is fixedly connected to a rack. The rack is meshed with the front side of the gear. The cleaning auxiliary unit is connected to the L-shaped rod and the rotating shaft.

[0017] As a preferred solution of the protection device and protection method of the ring main unit of the present invention, wherein: the cleaning auxiliary unit is located below the L-shaped rod, and the cleaning auxiliary unit includes a bearing plate fixedly connected to one side of the waterproof platform, a water pump and a water tank fixedly connected to the top of the bearing plate, a switch fixedly connected to the water pump, and an opening and closing mechanism for opening and closing the switch;

[0018] The water inlet end of the water pump is fixedly connected to the water tank through a first connecting pipe, and the water outlet end of the water pump is fixedly connected to a second connecting pipe. The second connecting pipe is rotatably connected to the end of the rotating shaft away from the cleaning brush, and the second connecting pipe is connected to the first water flow hole. The opening and closing assembly is fixedly connected to one side of the L-shaped rod.

[0019] As a preferred solution of the protection device and protection method of the ring network cabinet described in the present invention, the opening and closing mechanism includes an opening and closing member fixedly connected to one side of the L-shaped rod and a pressing member fixedly connected to the top of the supporting plate. In the process that the opening and closing member follows the lifting and lowering of the L-shaped rod, the switch can be pressed by the pressing member.

[0020] As a preferred solution of the protection device and protection method of the ring network cabinet described in the present invention, wherein: the opening and closing part includes an opening and closing rod fixedly connected to one side of the L-shaped rod, an opening time control groove is provided in the middle of the side of the opening and closing rod facing the switch, and arc-shaped closing grooves are provided above and below the opening time control groove on the side of the opening and closing rod facing the switch, and the protruding part between the arc-shaped closing groove and the opening time control groove is a starting bump.

[0021] As a preferred solution of the protection device and protection method of the ring network cabinet described in the present invention, the pressing part includes a fixing plate fixedly connected to the top of the supporting plate, a pressing rod slidingly penetrates the fixing plate corresponding to the switch, a connecting plate is fixedly connected to the pressing rod on the side of the fixing plate away from the switch, a reset spring is fixedly connected between the connecting plate and the fixing plate, the reset spring is movably sleeved on the outside of the pressing rod, and one end of the pressing rod away from the switch is set to an arc surface, and when the second ventilation pipe is located above or below, the arc surface of the pressing rod is adapted to engage with the arc closing groove, and when the arc surface at one end of the pressing rod comes out of the arc closing groove and abuts against the starting protrusion, the other end of the pressing rod presses the switch.

[0022] The protection method using the protection device of the ring main unit as above comprises the following steps:

[0023] Step 1: When cooling the inside of the ring network cabinet body, first, start the first cooling fan and the second cooling fan. The second cooling fan is responsible for discharging the high-temperature gas inside the ring network cabinet body, and the first cooling fan introduces the low-temperature air from the outside into the ring network cabinet body. At the same time, start the drive motor, and the output end of the drive motor drives the screw rod to rotate forward or reverse. When the screw rod rotates, the second ventilation pipe moves downward or upward along the screw rod under the limiting and guiding action inside the first ventilation pipe, so that the first cooling fan moves to dissipate heat, and the heat dissipation effect is good;

[0024] Step 2: With the movement of the second ventilation pipe, the L-shaped rod moves upward or downward accordingly, and the L-shaped rod drives the rack to move synchronously. The rack drives the rotating shaft to rotate through the gear meshing with it, and the rotating shaft drives the cleaning brush to rotate and clean the surface of the first filter plate through the mounting plate, which can effectively prevent ventilation obstruction caused by dust accumulation;

[0025] Step 3: In addition, when the L-shaped rod moves upward or downward, the opening and closing part moves accordingly, and the pressing rod is squeezed out of the arc-shaped closing groove through the adaptation characteristics of the arc surface and the arc-shaped closing groove. During the squeezing and disengaging process, one end of the pressing rod gradually approaches the switch. When one end of the arc surface of the pressing rod is completely out of the arc-shaped closing groove and abuts against the starting protrusion, the pressing rod presses the switch to the bottom, thereby starting the water pump; as the starting rod continues to move, the pressing rod separates from the starting protrusion and enters the opening time control groove area, and the pressing rod retreats and releases the switch under the action of the rebound force of the reset spring; after the water pump is running, the water in the water tank is introduced into the second connecting pipe through the first connecting pipe, and then enters the first water flow hole and the second water flow hole through the second connecting pipe, and finally sprayed out by the nozzle, so as to suppress the flying of dust, thereby preventing the dust from floating onto the first filter plate again;

[0026] Step 4: When the pressing rod leaves the opening time control slot area, it is pushed by the starting protrusion again to press the switch to close it. After closing, as the starting rod continues to move, the pressing rod separates from the starting protrusion and enters the arc-shaped closing slot area, and retreats under the action of the rebound force of the reset spring and engages with the arc-shaped closing slot again. Subsequently, the single machine is driven to reverse and rotate, and the above steps are cyclically executed.

[0027] Beneficial effects of the present invention:

[0028] 1. The present invention drives the screw rod to rotate by driving the motor, driving the second heat dissipation channel and the first heat dissipation fan inside to move up and down, which can cover a larger heat dissipation range and improve the heat dissipation efficiency of the ring network cabinet. At the same time, the L-shaped rod links the rack and gear to drive the cleaning brush to rotate and clean the first filter plate to avoid the influence of dust accumulation on the heat dissipation effect, thereby maintaining the stable operation of the ring network cabinet.

[0029] 2. When cleaning the first filter screen, the present invention opens and closes the switch through the L-shaped rod linkage opening and closing member and the pressing member, so that water mist can be sprayed while the cleaning brush rotates to settle the dust particles in the air, preventing the swept dust from floating again and adhering to the first filter screen that has just been cleaned. The overall operation is simple, which improves the self-cleaning ability of the equipment and ensures that the ring network cabinet equipment is always in the best working condition.

[0030] 3. In the present invention, the cleaning unit and the cleaning auxiliary unit are mechanically linked to achieve the coordinated work of automatic cleaning of the cleaning brush and water mist spraying. Specifically, when the second ventilation duct moves up and down, this action will link the L-shaped rod, which in turn drives the rack to move accordingly. The movement of the rack then drives the gear to rotate, and the gear in turn drives the cleaning brush to rotate and clean, ensuring that the first filter screen is cleaned comprehensively and effectively. At the same time, the water pump is started synchronously, and water mist can be sprayed during the cleaning process to achieve the effect of immediate dust reduction and prevent dust from adhering to the surface of the cleaned first filter screen again. This linkage design not only improves the cleaning efficiency, but also realizes the seamless connection and coordinated operation of the two major functions of cleaning and dust reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0032] Figure 1 The figure is a schematic diagram of the overall structure of a protection device for a ring main unit according to the present invention.

[0033] Figure 2 The present invention is a schematic cross-sectional structural diagram of a protection device for a ring main unit.

[0034] Figure 3 The present invention is a schematic cross-sectional structural diagram of an air intake and heat dissipation unit of a protection device for a ring main unit.

[0035] Figure 4 The present invention is a schematic structural diagram of a cleaning unit of a protection device for a ring main unit.

[0036] Figure 5 The present invention is a schematic cross-sectional structural diagram of a cleaning unit of a protection device for a ring main unit.

[0037] Figure 6 The present invention is a schematic diagram of the connection structure between a cleaning unit and an air intake and heat dissipation unit of a protection device of a ring main unit.

[0038] Figure 7The present invention is a schematic diagram of the connection structure of a cleaning unit and a cleaning auxiliary unit of a protection device of a ring main unit.

[0039] Figure 8 This is a structural schematic diagram of the opening and closing mechanism of a protection device for a ring main unit of the present invention when the water pump is not running.

[0040] Fig. 9 It is a structural schematic diagram of the opening and closing mechanism when starting a water pump of a protection device of a ring main unit of the present invention.

[0041] Fig.10 This is a structural schematic diagram of an opening and closing mechanism of a protection device for a ring main unit of the present invention when a water pump is in operation.

[0042] In the figure: 100, main unit; 101, waterproof platform; 102, ring network cabinet body; 103, rain cover; 200, exhaust cooling unit; 201, third ventilation pipe; 202, second cooling fan; 203, second filter screen; 300, intake cooling unit; 301, first ventilation pipe; 302, second ventilation pipe; 303, first cooling fan; 304, driving mechanism; 304-1, screw rod; 304-2, driving motor; 305, first filter screen; 400, cleaning unit; 401, L-shaped plate; 402, lifting rod; 403, rotating shaft; 404, gear; 405, mounting plate; 406, cleaning brush; 407, first A water flow hole; 408, a second water flow hole; 409, a nozzle; 410, an L-shaped rod; 411, a rack; 500, a cleaning auxiliary unit; 501, a bearing plate; 502, a water pump; 503, a switch; 504, an opening and closing mechanism; 504-1, an opening and closing member; 504-11, an opening and closing rod; 504-12, an opening time control groove; 504-13, an arc-shaped closing groove; 504-14, a starting protrusion; 504-2, a pressing member; 504-21, a fixing plate; 504-22, a pressing rod; 504-23, a connecting plate; 504-24, a reset spring; 505, a first connecting pipe; 506, a water tank; 507, a second connecting pipe. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0047] Example 1

[0048] Reference Figure 1-5 , which is the first embodiment of the present invention, provides a protection device for a ring main unit, mainly comprising:

[0049] The main unit 100, such as Figure 1 The main unit 100 includes a waterproof platform 101, a ring network cabinet body 102 fixedly connected to the top of the waterproof platform 101, and a rain cover 103 fixedly connected to the top of the ring network cabinet body 102. By setting the rain cover 103, it can play a rainproof effect and prevent rainwater from entering the inside of the ring network cabinet body 102 through the exhaust heat dissipation unit 200 and the air intake heat dissipation unit 300.

[0050] Exhaust heat dissipation unit 200, such as Figure 2 The exhaust heat dissipation unit 200 is fixedly connected to the right side of the ring network cabinet body 102, and is used to discharge the internal gas of the ring network cabinet body 102. The exhaust heat dissipation unit 200 includes a third ventilation pipe 201 fixedly connected to the middle part of the right side of the ring network cabinet body 102, a second cooling fan 202 fixedly connected to the inside of the third ventilation pipe 201, and a second filter plate 203 fixedly connected to the outer end of the third ventilation pipe 201. When the inside of the ring network cabinet body 102 is cooled, the second cooling fan 202 is started, and the second cooling fan 202 is responsible for discharging the high-temperature gas inside the ring network cabinet body 102.

[0051] The air intake cooling unit 300, such as Figure 3 The air intake and heat dissipation unit 300 is fixedly connected with the left side of the ring main unit body 102. The air intake and heat dissipation unit 300 includes a first ventilation pipe 301 fixedly connected with the middle part of the left side of the ring main unit body 102, a second ventilation pipe 302 adapted to slide with the inside of the first ventilation pipe 301, a first heat dissipation fan 303 fixedly installed in the second ventilation pipe 302, a driving mechanism 304 for driving the second ventilation pipe 302 to move up and down, and a first filter plate 305 fixedly installed at the outer end of the first ventilation pipe 301;

[0052] The driving mechanism 304 includes a screw rod 304-1 which is vertically arranged and rotatably connected to the inside of the second ventilation pipe 302, and a driving motor 304-2 which is fixedly connected to the top of the second ventilation pipe 302. The bottom output end of the driving motor 304-2 is fixedly connected to the top of the screw rod 304-1. The screw rod 304-1 is spirally arranged to penetrate the second ventilation pipe 302, and one end of the second ventilation pipe 302 is movably fitted to the inside of the first filter screen 305. When the inside of the ring network cabinet body 102 is cooled, the first cooling fan 303 and the driving motor 304-2 are started. When the first cooling fan 303 is running, the low-temperature air from the outside can be introduced into the ring network cabinet body 102. When used in conjunction with the first cooling fan 303, the inside of the ring network cabinet body 102 can be cooled quickly. When the driving motor 304-2 is running, it drives the screw rod 304-1 to rotate forward or reverse. When the screw rod 304-1 rotates, the second ventilation duct 302 moves downward or upward along the screw rod 304-1 under the limiting and guiding action inside the first ventilation duct 301, so that the first cooling fan 303 moves to dissipate heat, and the heat dissipation range is wide, which can further improve the heat dissipation effect.

[0053] Cleaning unit 400, such as Figure 2 The cleaning unit 400 is connected to the first ventilation pipe 301 and the second ventilation pipe 302, and is used to clean the first filter plate 305 while the second ventilation pipe 302 is raised or lowered.

[0054] Specifically, Figure 4 The cleaning unit 400 includes an L-shaped plate 401 fixedly connected to the top of the first ventilation pipe 301 and placed upside down, and a lifting rod 402 fixedly connected to the bottom of the second ventilation pipe 302;

[0055] like Figure 5 The vertical plate of the L-shaped plate 401 is rotatably connected with a rotating shaft 403 through a bearing, and a gear 404 is fixedly sleeved on the outside of the rotating shaft 403. The end of the rotating shaft 403 facing the first filter screen plate 305 is fixedly connected with a mounting plate 405, and the side of the mounting plate 405 away from the rotating shaft 403 is fixedly connected with a cleaning brush 406. One side of the cleaning brush 406 is movably fitted with the surface of the first filter screen plate 305, so when the cleaning brush 406 rotates, the first filter screen plate 305 can be cleaned. A first water flow hole 407 connected at both ends is opened inside the rotating shaft 403, and a second water flow hole 408 is opened inside the mounting plate 405. One end of the first water flow hole 407 is sealed and connected with the second water flow hole 408. A plurality of nozzles 409 are connected to the front and rear sides of the mounting plate 405, and the nozzles 409 are connected to the second water flow hole 408;

[0056] like Figure 4The bottom end of the lifting rod 402 slides out of the first ventilation pipe 301 and is fixedly connected to an L-shaped rod 410. The top of the vertical rod of the L-shaped rod 410 is fixedly connected to a rack 411, and the rack 411 is meshed with the front side of the gear 404.

[0057] In summary, when the second ventilation duct 302 moves upward or downward, the lifting rod 402 and the L-shaped rod 410 move upward or downward accordingly, and the L-shaped rod 410 drives the rack 411 to move synchronously. The rack 411 drives the rotating shaft 403 to rotate through the gear 404 meshing with it, and the rotating shaft 403 drives the cleaning brush 406 to rotate and clean the surface of the first filter plate 305 through the mounting plate 405, which can effectively prevent ventilation obstructions caused by dust accumulation, thereby ensuring the heat dissipation effect of the ring network cabinet body 102.

[0058] Example 2

[0059] Reference Figure 7-10 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the device also includes a cleaning auxiliary unit 500, which is connected to the cleaning unit 400 and can spray to reduce dust when the cleaning unit 400 is cleaning. The cleaning auxiliary unit 500 is connected to the L-shaped rod 410 and the rotating shaft 403.

[0060] Specifically, Figure 7 The cleaning auxiliary unit 500 is located below the L-shaped rod 410, and includes a bearing plate 501 fixedly connected to one side of the waterproof platform 101, a water pump 502 and a water tank 506 fixedly connected to the top of the bearing plate 501, a switch 503 fixedly connected to the water pump 502, and an opening and closing mechanism 504 for opening and closing the switch 503;

[0061] The water inlet end of the water pump 502 is fixedly connected to the water tank 506 through the first connecting pipe 505, and the water outlet end of the water pump 502 is fixedly connected to the second connecting pipe 507. The second connecting pipe 507 is rotatably connected to the end of the rotating shaft 403 away from the cleaning brush 406. Therefore, when the rotating shaft 403 rotates, the second connecting pipe 507 does not rotate with the rotating shaft 403, and the second connecting pipe 507 is connected to the first water flow hole 407, and the opening and closing component 504 is fixedly connected to one side of the L-shaped rod 410.

[0062] Specifically, Figure 8 The opening and closing mechanism 504 includes an opening and closing member 504-1 fixedly connected to one side of the L-shaped rod 410 and a pressing member 504-2 fixedly connected to the top of the supporting plate 501. When the opening and closing member 504-1 follows the rise and fall of the L-shaped rod 410, the switch 503 can be pressed by the pressing member 504-2.

[0063] Furthermore, if Figure 8The opening and closing member 504-1 includes an opening and closing rod 504-11 fixedly connected to one side of the L-shaped rod 410. An opening time control groove 504-12 is provided in the middle of the side of the opening and closing rod 504-11 facing the switch 503. The upper and lower ends of the opening time control groove 504-12 are both set to arc shape, which facilitates the pressing rod 504-22 to be squeezed out of the opening time control groove 504-12. The opening and closing rod 504-11 has an arc-shaped closing groove 504-13 on the upper and lower sides of the opening time control groove 504-12 on the side facing the switch 503. The protruding part between the arc-shaped closing groove 504-13 and the opening time control groove 504-12 is a starting bump 504-14.

[0064] The pressing member 504-2 includes a fixing plate 504-21 fixedly connected to the top of the carrier plate 501, a pressing rod 504-22 is slidably penetrated on the fixing plate 504-21 corresponding to the switch 503, a connecting plate 504-23 is fixedly connected to the pressing rod 504-22 on the side of the fixing plate 504-21 away from the switch 503, a return spring 504-24 is fixedly connected between the connection plate 504-23 and the fixing plate 504-21, and the return spring 504-2 The movable sleeve is arranged outside the pressing rod 504-22, and one end of the pressing rod 504-22 away from the switch 503 is set as an arc surface. When the second ventilation pipe 302 is located at the upper or lower part, the arc surface of the pressing rod 504-22 is adapted to engage with the arc closing groove 504-13. When the arc surface of one end of the pressing rod 504-22 is released from the arc closing groove 504-13 and abuts against the start protrusion 504-14, the other end of the pressing rod 504-22 presses the switch 503.

[0065] The remaining structures are the same as those of Example 1.

[0066] In summary, the cleaning unit 400 and the cleaning auxiliary unit 500 realize the coordinated work of automatic cleaning of the cleaning brush 406 and water mist spraying through mechanical linkage. Specifically, when the second ventilation pipe 302 moves up and down, this action will link the lifting rod 402 and the L-shaped rod 410, and then drive the rack 411 to move accordingly. The movement of the rack 411 then drives the gear 404 to rotate, and the gear 404 then drives the cleaning brush 406 to rotate and clean, ensuring that the first filter screen 305 is cleaned comprehensively and effectively. At the same time, the water pump 502 is started synchronously, and can spray water mist during the cleaning process to achieve the effect of immediate dust reduction and prevent dust from adhering to the surface of the cleaned first filter screen 305 again. This linkage design not only improves the cleaning efficiency, but also realizes the seamless connection and coordinated operation of the two major functions of cleaning and dust reduction.

[0067] The protection method of using the above-mentioned protection device of the ring main unit is as follows: when dissipating heat inside the ring main unit body 102, first, start the first cooling fan 303 and the second cooling fan 202, the second cooling fan 202 is responsible for discharging the high-temperature gas inside the ring main unit body 102, and the first cooling fan 303 introduces the external low-temperature air into the ring main unit body 102. At the same time, start the drive motor 304-2, and the output end of the drive motor 304-2 drives the screw rod 304-1 to rotate forward or reverse. When the screw rod 304-1 rotates, the second ventilation pipe 302 moves downward or upward along the screw rod 304-1 under the limiting and guiding action inside the first ventilation pipe 301, so that the first cooling fan 303 moves to dissipate heat, and the heat dissipation effect is good. As the second ventilation pipe 302 moves, the L-shaped rod 410 moves upward or downward accordingly, and the L-shaped rod 410 drives the rack 411 to move synchronously. The rack 411 drives the rotating shaft 403 to rotate through the gear 404 meshing with it, and the rotating shaft 403 drives the cleaning brush 406 to rotate and clean the surface of the first filter plate 305 through the mounting plate 405, which can effectively prevent ventilation obstruction caused by dust accumulation. In addition, when the L-shaped rod 410 moves upward or downward, the opening and closing member 504-1 moves accordingly, and the pressing rod 504-22 is adapted to the arc surface and the arc-shaped closing groove 504-13 through the adaptation characteristics (such as Figure 8 ), squeezed out from the arc-shaped closing groove 504-13. During the squeezing and escaping process, one end of the pressing rod 504-22 gradually approaches the switch 503. When the arc surface end of the pressing rod 504-22 completely escapes from the arc-shaped closing groove 504-13 and abuts against the starting protrusion 504-14 (such as Fig. 9 ), the pressing rod 504-22 presses the switch 503 to the bottom, thereby starting the water pump 502; as the starting rod 504-12 continues to move, the pressing rod 504-22 separates from the starting protrusion 504-14 and enters the opening time control groove 504-12 area (such as Fig.10), the pressing rod 504-22 retreats under the rebound force of the return spring 504-24 to release the switch 503; after the water pump 502 is running, the water in the water tank 506 is introduced into the second connecting pipe 507 through the first connecting pipe 505, and then enters the first water flow hole 407 and the second water flow hole 408 through the second connecting pipe 507, and is finally sprayed out by the nozzle 409, which suppresses the flying of dust, thereby preventing the dust from floating onto the first filter screen plate 305 again. When the pressing rod 504-22 leaves the opening time control groove 504-12 area, it is pushed by the starting protrusion 504-14 again to press the switch 503 to close it. After closing, as the starting rod 504-12 continues to move, the pressing rod 504-22 separates from the starting protrusion 504-14 and enters the arc-shaped closing groove 504-13 area, and retreats under the action of the rebound force of the reset spring 504-24 and engages with the arc-shaped closing groove 504-13 again. Subsequently, the single machine 304-2 is driven to reverse and rotate, and the above steps are cyclically executed.

[0068] It is worth noting that the entire device is controlled by a controller. Since the controller is a commonly used device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A protection device for a ring main unit, characterized in that: include: A main unit (100), the main unit (100) comprising a waterproof platform (101), a ring network cabinet body (102) fixedly connected to the top of the waterproof platform (101), and a rain cover (103) fixedly connected to the top of the ring network cabinet body (102); An exhaust heat dissipation unit (200), the exhaust heat dissipation unit (200) being fixedly connected to the right side of the ring main unit body (102) and used for discharging the internal gas of the ring main unit body (102); An air intake heat dissipation unit (300), the air intake heat dissipation unit (300) being fixedly connected to the left side of the ring network cabinet body (102), the air intake heat dissipation unit (300) comprising a first ventilation pipe (301) fixedly connected to the middle part of the left side of the ring network cabinet body (102), a second ventilation pipe (302) adapted to slide inside the first ventilation pipe (301), a first heat dissipation fan (303) fixedly installed inside the second ventilation pipe (302), a driving mechanism (304) for driving the second ventilation pipe (302) to move up and down, and a first filter screen (305) fixedly installed at the outer end of the first ventilation pipe (301); a cleaning unit (400), the cleaning unit (400) being connected to the first ventilation pipe (301) and the second ventilation pipe (302), and being used for cleaning the first filter screen (305) while the second ventilation pipe (302) is being raised or lowered; A cleaning auxiliary unit (500) is connected to the cleaning unit (400) and is capable of spraying to reduce dust when the cleaning unit (400) is cleaning.

2. The protection device for the ring main unit according to claim 1, characterized in that: The exhaust heat dissipation unit (200) comprises a third ventilation pipe (201) fixedly connected to the middle part of the right side of the ring main unit (102), a second heat dissipation fan (202) fixedly connected to the inside of the third ventilation pipe (201), and a second filter screen (203) fixedly connected to the outer end of the third ventilation pipe (201).

3. The protection device for the ring main unit according to claim 1, characterized in that: The driving mechanism (304) comprises a screw rod (304-1) which is vertically arranged and rotatably connected to the inside of the second ventilation pipe (302), and a driving motor (304-2) which is fixedly connected to the top of the second ventilation pipe (302); the bottom output end of the driving motor (304-2) is fixedly connected to the top of the screw rod (304-1), and the screw rod (304-1) is spirally arranged to penetrate the second ventilation pipe (302).

4. The protection device for the ring main unit according to claim 1, characterized in that: One end of the second ventilation pipe (302) is movably fitted to the inner side of the first filter screen plate (305).

5. The protection device for the ring main unit according to claim 1, characterized in that: The cleaning unit (400) comprises an L-shaped plate (401) fixedly connected to the top of the first ventilation pipe (301) and placed upside down, and a lifting rod (402) fixedly connected to the bottom of the second ventilation pipe (302); A rotating shaft (403) is rotatably penetrated through the vertical plate of the L-shaped plate (401) via a bearing, a gear (404) is fixedly sleeved on the outside of the rotating shaft (403), a mounting plate (405) is fixedly connected to one end of the rotating shaft (403) facing the first filter screen plate (305), a cleaning brush (406) is fixedly connected to the side of the mounting plate (405) away from the rotating shaft (403), one side of the cleaning brush (406) is movably fitted with the surface of the first filter screen plate (305), a first water flow hole (407) with two ends connected is provided inside the rotating shaft (403), a second water flow hole (408) is provided inside the mounting plate (405), one end of the first water flow hole (407) is sealed and connected to the second water flow hole (408), and a plurality of nozzles (409) are connected to the front and rear sides of the mounting plate (405), and the nozzles (409) are connected to the second water flow hole (408); The bottom end of the lifting rod (402) slides out of the first ventilation pipe (301) and is fixedly connected to an L-shaped rod (410); the top end of the vertical rod of the L-shaped rod (410) is fixedly connected to a rack (411); the rack (411) is meshedly connected to the front side of the gear (404); and the cleaning auxiliary unit (500) is connected to the L-shaped rod (410) and the rotating shaft (403).

6. The protection device for the ring main unit according to claim 5, characterized in that: The cleaning auxiliary unit (500) is located below the L-shaped rod (410), and comprises a bearing plate (501) fixedly connected to one side of the waterproof platform (101), a water pump (502) and a water tank (506) fixedly connected to the top of the bearing plate (501), a switch (503) fixedly connected to the water pump (502), and an opening and closing mechanism (504) for opening and closing the switch (503); The water inlet end of the water pump (502) is fixedly connected to the water tank (506) via a first connecting pipe (505), and the water outlet end of the water pump (502) is fixedly connected to a second connecting pipe (507). The second connecting pipe (507) is rotatably connected to an end of the rotating shaft (403) away from the cleaning brush (406), and the second connecting pipe (507) is connected to the first water flow hole (407). The opening and closing component (504) is fixedly connected to one side of the L-shaped rod (410).

7. The protection device for the ring main unit according to claim 6, characterized in that: The opening and closing mechanism (504) comprises an opening and closing member (504-1) fixedly connected to one side of the L-shaped rod (410) and a pressing member (504-2) fixedly connected to the top of the carrying plate (501); when the opening and closing member (504-1) follows the L-shaped rod (410) to rise and fall, the switch (503) can be pressed by the pressing member (504-2).

8. The protection device for the ring main unit according to claim 7, characterized in that: The opening and closing member (504-1) comprises an opening and closing rod (504-11) fixedly connected to one side of the L-shaped rod (410); an opening time control groove (504-12) is provided in the middle of a side of the opening and closing rod (504-11) facing the switch (503); arc-shaped closing grooves (504-13) are provided above and below the opening time control groove (504-12) on the side of the opening and closing rod (504-11) facing the switch (503); and a protruding portion between the arc-shaped closing groove (504-13) and the opening time control groove (504-12) is a starting protrusion (504-14).

9. The protection device for a ring main unit according to claim 7, characterized in that: The pressing member (504-2) comprises a fixing plate (504-21) fixedly connected to the top of the carrying plate (501); a pressing rod (504-22) is slidably penetrated through the fixing plate (504-21) at a position corresponding to the switch (503); a connecting plate (504-23) is fixedly connected to the pressing rod (504-22) at a side of the fixing plate (504-21 away from the switch (503); a return spring (504-24) is fixedly connected between the connection plate (504-23) and the fixing plate (504-21); the return spring The movable sleeve (504-24) is arranged on the outside of the pressing rod (504-22), and one end of the pressing rod (504-22) away from the switch (503) is set as an arc surface. When the second ventilation pipe (302) is located at the top or bottom, the arc surface of the pressing rod (504-22) is adapted to engage with the arc-shaped closing groove (504-13). When the arc surface of one end of the pressing rod (504-22 is released from the arc-shaped closing groove (504-13) and abuts against the starting protrusion (504-14), the other end of the pressing rod (504-22 presses the switch (503).

10. The protection method of the protection device of the ring main unit according to any one of claims 1 to 9, characterized in that: Step 1: When dissipating heat inside the ring network cabinet body (102), first, start the first heat dissipation fan (303) and the second heat dissipation fan (202), the second heat dissipation fan (202) is responsible for discharging high-temperature gas inside the ring network cabinet body (102), and the first heat dissipation fan (303) introduces low-temperature air from the outside into the ring network cabinet body (102). At the same time, start the drive motor (304-2), and the output end of the drive motor (304-2) drives the screw rod (304-1) to rotate forward or reverse. When the screw rod (304-1) rotates, the second ventilation pipe (302) moves downward or upward along the screw rod (304-1) under the limiting and guiding action inside the first ventilation pipe (301), so that the first heat dissipation fan (303) moves to dissipate heat, and the heat dissipation effect is good; Step 2: As the second ventilation pipe (302) moves, the L-shaped rod (410) moves upward or downward accordingly, and the L-shaped rod (410) drives the rack (411) to move synchronously, and the rack (411) drives the rotating shaft (403) to rotate through the gear (404) meshing with it, and the rotating shaft (403) drives the cleaning brush (406) to rotate and clean the surface of the first filter plate (305) through the mounting plate (405), which can effectively prevent ventilation obstruction caused by dust accumulation; Step 3: In addition, when the L-shaped rod (410) moves upward or downward, the opening and closing member (504-1) moves accordingly, and the pressing rod (504-22) is squeezed out of the arc-shaped closing groove (504-13) through the adaptation characteristics of the arc surface and the arc-shaped closing groove (504-13). During the squeezing and escaping process, one end of the pressing rod (504-22) gradually approaches the switch (503). When the arc surface end of the pressing rod (504-22) is completely out of the arc-shaped closing groove (504-13) and abuts against the starting protrusion (504-14), the pressing rod (504-22) presses the switch (503) to the bottom, thereby starting the water pump (502); as the starting rod (504 -12) continues to move, the pressing rod (504-22) separates from the starting protrusion (504-14) and enters the opening time control groove (504-12) area, and the pressing rod (504-22) retreats under the rebound force of the return spring (504-24) to release the switch (503); after the water pump (502) is running, the water in the water tank (506) is introduced into the second connecting pipe (507) through the first connecting pipe (505), and then enters the first water flow hole (407) and the second water flow hole (408) through the second connecting pipe (507), and finally is sprayed out by the nozzle (409), so as to suppress the flying of dust, thereby preventing the dust from floating onto the first filter screen plate (305) again; Step 4: When the pressing rod (504-22) leaves the opening time control groove (504-12) area, it is pushed by the starting protrusion (504-14) again to press the switch (503) to close it. After closing, as the starting rod (504-12) continues to move, the pressing rod (504-22) separates from the starting protrusion (504-14) and enters the arc-shaped closing groove (504-13) area, and retreats under the rebound force of the return spring (504-24) and engages with the arc-shaped closing groove (504-13) again, and then drives the single machine (304-2) to reverse rotation and repeat the above steps.

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