Solid insulation ring main unit

Abstract

The invention relates to the technical field of electrical equipment, and provides a solid insulation ring main unit comprising a cabinet body, a cabinet door, a heating expansion block, a first closing plate and a first reset member, one side of the cabinet body is provided with a mounting cavity, the mounting cavity is used for mounting components, the cabinet door is connected to the cabinet body, the first closing plate is slidably embedded in the mounting cavity, the first closing plate is provided with a first through groove, and the first through groove is provided with a second through groove. The installation cavity is provided with a first communication hole, the heating expansion block is embedded in the installation cavity and drives the first sealing plate to slide, the first reset piece is connected between the cabinet body and the first sealing plate, and the first reset piece enables the first through groove and the first communication hole to have the tendency of not communicating. When the temperature in the mounting cavity is increased, the heating expansion block is heated to expand and push the sealing plate to move upwards, so that the first communication hole is communicated with the first communication hole, the mounting cavity exchanges heat with the outside through the first through groove and the first communication hole, the possibility of damage of components in the mounting cavity is reduced, and the heat dissipation efficiency of the ring main unit is improved; and the service life of the ring main unit is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a solid-insulated ring main unit. Background Art

[0002] Solid insulation ring main unit is a ring main unit that uses solid insulation material as the main insulation medium.

[0003] The vacuum interrupter and its conductive connections, disconnectors, earthing switches, main busbars, branch busbars and other main conductive circuits are packaged with solid insulating media singly or in combination to form one or more modules with certain functions, which can be combined or expanded again and have full insulation and full sealing performance. The surface of the module that can be touched by people is coated with a conductive or semi-conductive shielding layer and can be directly and reliably grounded. Ring main unit.

[0004] When a solid-insulated ring main unit works for a long time, the internal temperature rises, which accelerates the aging process of the insulation material and reduces its insulation performance, thereby shortening the service life of the ring main unit; solid insulation materials may experience thermal breakdown at high temperatures, that is, the material loses its insulation ability due to excessive temperature, thereby causing electrical failures. Summary of the Invention

[0005] In order to improve the heat dissipation efficiency of a solid-insulated ring main unit, reduce safety accidents caused by overheating, and improve the safety of a solid-insulated ring main unit, the present application provides a solid-insulated ring main unit.

[0006] The solid insulated ring main unit provided in this application adopts the following technical solution: A solid insulated ring network cabinet comprises a cabinet body, a cabinet door and a heat dissipation mechanism, wherein an installation cavity is provided on one side of the cabinet body, and the installation cavity is used for installing components. The cabinet door is connected to the cabinet body and covers the opening of the installation cavity. The heat dissipation mechanism comprises a heat expansion block, a first closing plate and a first reset member. The first closing plate is slidably embedded in the installation cavity, the first closing plate is provided with a first through groove, and a first communicating hole is provided on the wall of the installation cavity. The first communicating hole is used to communicate with the first through groove. The heat expansion block is embedded in the installation cavity, and the heat expansion block is used to drive the first closing plate to slide. The first reset member is connected between the cabinet body and the first closing plate. The first reset member makes the first through groove and the first communicating hole have a tendency to be disconnected.

[0007] By adopting the above technical solution, when the temperature in the installation cavity rises, the heat expansion block expands due to the heat, pushing the closing plate up, so that the first connecting hole is connected with the first connecting hole, so that the installation cavity exchanges heat with the outside world through the first through groove and the first connecting hole, reducing the possibility of damage to components in the installation cavity and improving the heat dissipation efficiency of the ring network cabinet. When the temperature in the installation cavity drops, the first reset member drives the first closing plate to move downward, so that the first through groove and the first connecting hole are not connected with the outside world, reducing the possibility of components in the installation cavity being damaged by external impurities and improving the service life of the ring network cabinet.

[0008] Preferably, the heat dissipation mechanism also includes a second closing plate, a third sliding groove is provided on the upper cavity wall of the installation cavity, the upper end of the first closing plate is connected to a slide, the slide is slidably embedded in the third sliding groove, the sliding direction of the slide is vertical, the retracted first closing plate is located on the side of the installation cavity away from the cabinet door, the second closing plate is slidably embedded in the installation cavity, the sliding direction of the second closing plate is parallel to the sliding direction of the slide, the upper end of the second closing plate is used to abut against the slide, the second closing plate is provided with a second through groove, a second communicating hole is provided on the cavity wall of the installation cavity, the second communicating hole is used to communicate with the second through groove, two second closing plates are provided, and the two second closing plates are symmetrically distributed along the direction perpendicular to the sliding direction of the slide, the number of the heat expansion blocks is the same as the sum of the number of the first closing plate and the second closing plate and corresponds one to one, and the heat expansion block drives the second closing plate to slide.

[0009] By adopting the above technical solution and setting a second closing plate, a channel for heat exchange between the installation cavity and the outside world is increased when the temperature in the installation cavity is too high, thereby improving the heat dissipation efficiency of the ring network cabinet and extending the service life of the ring network cabinet.

[0010] Preferably, it also includes a fixing column, a magnetic ring and a second reset member, a fixing groove is provided on the side of the second closing plate close to the wall of the installation cavity, and a first groove is provided on the wall of the installation cavity, the number of the first groove, the fixing column, the magnetic ring and the second reset member is the same as the number of the fixing grooves and corresponds one to one, the magnetic ring is slidably embedded in the first groove, the magnetic ring and the magnetic ring of the adjacent cabinet repel each other, one end of the fixing column is connected to the magnetic ring, and the other end of the fixing column is used to be embedded in the fixing groove, the second reset member is connected between the magnetic ring and the cabinet, and the second reset member makes the end of the fixing column away from the magnetic ring have a tendency to be embedded in the first groove.

[0011] By adopting the above technical solution, when multiple ring network cabinets are installed adjacent to each other, the magnetic rings close to the adjacent ring network cabinet bodies and the magnetic rings inside the adjacent ring network cabinets repel each other, pushing the fixing column to overcome the elastic force of the second reset member and embed into the fixing groove, thereby realizing the relative fixation of the second closing plate and the cabinet body, avoiding the heat expansion block driving the second closing plate to slide, making the installation cavities of the two adjacent ring network cabinet bodies connected, making each ring network cabinet a relatively independent individual, reducing the possibility of influence between the two adjacent ring network cabinets, and improving the reliability and service life of the ring network cabinet.

[0012] Preferably, the heat dissipation mechanism also includes a cooling fan and a contact switch. The cabinet is provided with a connecting cavity, which is arranged around the installation cavity. The connecting cavity is connected to the first connecting hole and the second connecting hole. An air outlet is provided on the outer wall of the connecting cavity. The cooling fan is embedded in the air outlet. The contact switch is embedded in the third slide groove. The contact switch is used for the slide to abut against, and the contact switch is electrically connected to the cooling fan.

[0013] By adopting the above technical solution, as the heat expansion block expands, the overlapping area of ​​the first through slot and the first connecting hole and the overlapping area of ​​the second through slot and the second connecting hole gradually increases. When the first through slot is opposite to the first connecting hole and the second through slot is opposite to the second connecting hole, the proximity of heat exchange through the first through slot, the first connecting hole, the second through slot and the second connecting hole reaches the limit, the slide pushes the contact switch to close, the cooling fan works, and the hot air in the installation cavity enters the connecting cavity through the first through slot, the first connecting hole, the second through slot and the second connecting hole, and then the air in the connecting cavity is discharged from the cabinet through the air outlet by the cooling fan, thereby improving the heat dissipation efficiency of the ring network cabinet.

[0014] Preferably, it also includes a temperature sensor, a driving cylinder and a limit assembly, the first closing plate is provided with a first limit groove on one side close to the wall of the installation cavity, the second closing plate is provided with a second limit groove on one side close to the wall of the installation cavity, a second groove is provided on the wall of the installation cavity, the number of the second grooves, the driving cylinder and the limit assembly is the same as the sum of the number of the first limit groove and the second limit groove and corresponds one to one, the limit assembly includes a sliding seat, a fourth reset member and a limit block, the sliding seat is coaxially slidably embedded in the second groove, and the limit block is slidably connected to one side of the sliding seat close to the installation cavity On the other hand, the sliding direction of the limit block is parallel to the sliding direction of the sliding seat, the limit block is used to be embedded in the first limit groove or the second limit groove, the fourth reset member is connected between the limit block and the sliding seat, the fourth reset member makes the limit block have a tendency to move away from the sliding seat, the driving cylinder is embedded in the second groove, the driving cylinder is used to drive the limit block to slide, the temperature sensor is embedded in the installation cavity, the temperature sensor is used to detect the temperature in the installation cavity, when the temperature in the installation cavity is within a safe range, the end of the limit block away from the sliding seat is embedded in the second groove.

[0015] By adopting the above technical solution, when the temperature in the installation cavity exceeds the safe range, the temperature sensor sends a signal to the drive cylinder, the drive cylinder piston rod extends, and pushes the sliding seat to slide. The limit block is pressed against the first closing plate and the second closing plate under the action of the elastic force of the fourth reset member, and the heat expansion block drives the first closing plate and the second closing plate to slide. When the first limit groove and the second limit groove are opposite to the second groove, the limit block is embedded in the first limit groove and the second limit groove to achieve relative fixation of the first closing plate and the second closing plate and the cabinet body. When the temperature in the installation cavity drops to a safe range, the temperature sensor sends a signal to the drive cylinder, and the drive cylinder piston rod contracts, so that the sliding seat slides, and the limit block is disengaged from the first limit groove and the second limit groove through the fourth reset member, contacting the first closing plate and the second closing plate and the cabinet body to be locked, so that the slide plate moves down, the contact switch is disconnected, and the cooling fan stops working, reducing the possibility of damage to the cooling fan caused by frequent starting and stopping of the cooling fan, thereby extending the service life of the ring network cabinet.

[0016] Preferably, the heat dissipation mechanism also includes a baffle, a magnetic block, a third reset member and an electromagnet. An air inlet is provided on the wall of the installation cavity, the air inlet is located below the connecting cavity, the air inlet is connected to the outside world, the baffle is slidably connected to the cabinet to realize the opening and closing of the air inlet, the third reset member is connected between the baffle and the cabinet, and the third reset member makes the baffle have a tendency to close the air inlet, the magnet is connected to the baffle, the electromagnet is connected to the cabinet, the electromagnet is electrically connected to the cooling fan and the contact switch, and the electromagnet is used to adsorb the magnetic block.

[0017] By adopting the above technical solution, the slide plate contacts the contact switch, the cooling fan starts to work, and the air in the connecting cavity is sent out of the cabinet through the air outlet. The electromagnet is energized to attract the magnetic block, so that the baffle slides, and the air inlet is opened, allowing the outside air to enter the installation cavity through the air inlet, so that the installation cavity and the outside air can circulate in a stable loop, thereby improving the heat dissipation efficiency of the ring network cabinet.

[0018] Preferably, the heat dissipation mechanism further includes a filter assembly, the filter assembly includes a filter screen, a mounting groove is provided on the outer wall of the cabinet body, the mounting groove is connected to the air outlet and the air inlet, and the filter screen is embedded in the mounting groove.

[0019] By adopting the above technical solution, the filter is embedded in the installation groove, so that the air in the installation cavity is discharged to the outside. The outside air enters the installation cavity through the air inlet and needs to be filtered by the filter, reducing the possibility of external impurities entering the installation cavity and causing damage to components, thereby increasing the service life of the ring network cabinet.

[0020] Preferably, the filter assembly also includes a connecting rope, a knocking block and a seventh reset member, one end of the knocking block is rotatably embedded in the mounting groove, the rotation axis of the knocking block is horizontal, one end of the connecting rope is connected to the other end of the knocking block, the other end of the connecting rope is connected to the magnetic block, the seventh reset member is connected between the knocking block and the cabinet, and the seventh reset member makes the knocking block have a tendency to hit the filter.

[0021] By adopting the above technical solution, after the magnetic block slides, the knocking block is driven to rotate by the connecting rope. When the electromagnet is powered off, the knocking block rotates under the action of the elastic force of the seventh reset part. The knocking block knocks the filter screen, causing the filter screen to vibrate and shake off impurities on the filter screen, thereby realizing automatic cleaning of the filter screen and ensuring the filtering efficiency of the filter screen.

[0022] The locking block and the sixth restoring member are respectively connected to the first closing plate and the second closing plate, and the locking block is slidably connected to the first closing plate. The locking plate is fixed to a position adjacent to the first locking plate, and the locking plate is engaged with the locking member and the locking member is engaged with the locking member, and the locking member is engaged with the locking member.

[0023] By adopting the above technical solution, when the ring network cabinet is not installed, the locking block is embedded in the locking groove to lock the first closing plate and the second closing plate to the cabinet body, reducing the temperature change in the user site, causing the heat expansion block to drive the first closing plate and the second closing plate to move, so that the installation cavity is connected to the outside world, resulting in the possibility of external impurities entering the installation cavity and causing damage to components, thereby extending the service life of the ring network cabinet.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When the temperature in the installation cavity rises, the heat-expanding block expands due to the heat, pushing the closing plate upward, so that the first communicating hole is connected to the first communicating hole, allowing the installation cavity to exchange heat with the outside world through the first through-groove and the first communicating hole, reducing the possibility of damage to components in the installation cavity and improving the heat dissipation efficiency of the ring network cabinet. When the temperature in the installation cavity drops, the first reset member drives the first closing plate downward, so that the first through-groove and the first communicating hole are disconnected from the outside world, reducing the possibility of damage to components in the installation cavity by external impurities and extending the service life of the ring network cabinet; 2. When multiple ring network cabinets are installed adjacent to each other, the magnetic rings near the adjacent ring network cabinet body repel each other with the magnetic rings inside the adjacent ring network cabinet, pushing the fixing column to overcome the elastic force of the second reset member and embed into the fixing groove, thereby achieving relative fixation of the second closing plate and the cabinet body, preventing the thermal expansion block from driving the second closing plate to slide, and making the installation cavities of the two adjacent ring network cabinet bodies connected, making each ring network cabinet a relatively independent individual, reducing the possibility of impact between the two adjacent ring network cabinets, and improving the reliability and service life of the ring network cabinet; 3. The filter is embedded in the installation groove, so that the air in the installation cavity is discharged to the outside. The outside air enters the installation cavity through the air inlet and needs to be filtered by the filter to reduce the possibility of external impurities entering the installation cavity and causing damage to components, thereby increasing the service life of the ring network cabinet. After the magnetic block slides, the knocking block is driven to rotate by the connecting rope. When the electromagnet is powered off, the knocking block rotates under the action of the elastic force of the seventh reset member, and the knocking block knocks the filter, causing the filter to vibrate and shake off impurities on the filter, thereby realizing automatic cleaning of the filter and ensuring the filtering efficiency of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the solid insulation ring network cabinet.

[0026] Figure 2 It is a cross-sectional view of the solid-insulated ring main unit, mainly showing the first through groove and the first connecting hole.

[0027] Figure 3 It is a cross-sectional view of a solid-insulated ring main unit, mainly showing the connection cavity, the first connecting hole, and the second connecting hole.

[0028] Figure 4 It is a cross-sectional view of the solid-insulated ring main unit, mainly showing the second through groove and the second connecting hole.

[0029] Figure 5 yes Figure 2 Enlarged view of point A in the middle.

[0030] Figure 6 yes Figure 3 Enlarged view of point B in the middle.

[0031] Figure 7It is a partial cross-section view of the solid-insulated ring main unit, mainly showing the filter components.

[0032] Figure 8 yes Figure 2 Enlarged view of point C in the middle.

[0033] Figure 9 yes Figure 4 Enlarged view of point D in the middle.

[0034] Description of reference numerals: 1. Ring main unit; 11. Cabinet; 111. Installation cavity; 112. First connecting hole; 113. Third chute; 114. Second connecting hole; 115. First groove; 116. Connecting cavity; 117. Air outlet; 118. Second groove; 119. Air inlet; 1110. Installation groove; 1111. Fourth chute; 1112. Connecting groove; 1113. Locking groove; 1114. First connecting groove; 1115. First slide Groove; 1116, second sliding groove; 1117, third groove; 1118, retaining ring; 1119, fifth sliding groove; 1120, fourth groove; 1121, second connecting groove; 1122, fifth groove; 1123, connecting channel; 1124, sixth groove; 12, cabinet door; 13, slider; 131, push rod; 132, third embedded groove; 14, fifth reset member; 16, spacer; 161, avoidance groove; 162, grip groove; 2. Heat dissipation mechanism; 21. Thermal expansion block; 22. First closing plate; 221. First through-slot; 222. First limiting slot; 223. First embedding slot; 23. First reset member; 24. Second closing plate; 241. Second through-slot; 242. Fixing slot; 243. Second limiting slot; 244. Second embedding slot; 25. Slide plate; 26. Fixing assembly; 261. Fixing column; 262. Magnetic ring; 263. Second reset member; 27. Cooling fan; 28. Contact switch; 29. ​​Temperature sensor; 210. Drive cylinder; 211. Limiting assembly; 2111. Sliding seat; 2112. Fourth reset member; 2113. Limiting block; 212. Baffle; 2121. Connecting rod; 213. Magnetic block; 214. Third reset member; 215. Electromagnet; 216. Filtering assembly; 2161. Filter screen; 2162. Knocking block; 2163. Connecting rope; 2164. Seventh reset member; 2165. Rotating shaft; 2166. Connecting ring; 217. Locking assembly; 2171. Locking block; 21711. Chamfer; 2172. Sixth reset member. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1The present application discloses a solid-insulated ring main unit (RMU) including a RMU body 1. The RMU body 1 includes a plurality of cabinets 11, which are evenly distributed along the width of the cabinet 11. In this embodiment, two cabinets 11 are provided, and the side walls of adjacent cabinets 11 are in contact with each other.

[0037] Reference Figure 1 and Figure 2 The cabinet body 11 is provided with an installation cavity 111 along one side of the cabinet body 11 in the longitudinal direction. The installation cavity 111 is used for installing components. The ring main unit 1 also includes cabinet doors 12. The number of cabinet doors 12 is the same as the number of cabinet bodies 11 and they correspond one to one. The cabinet doors 12 are connected to the cabinet body 11 and cover the opening of the installation cavity 111. The cabinet door 12 is rotatably connected to the cabinet body 11 at one end along the longitudinal direction of the cabinet door 12. The rotation axis of the cabinet door 12 is vertical.

[0038] Reference Figure 2 and Figure 3 A solid insulated ring network cabinet also includes a heat dissipation mechanism 2, and the number of the heat dissipation mechanisms 2 is the same as the number of the cabinet bodies 11 and corresponds one to one. The cabinet body 11 is provided with a connecting cavity 116, and the connecting cavity 116 is arranged around the installation cavity 111. The heat dissipation mechanism 2 includes a first closing plate 22, and a first slide groove 1115 is provided on the cavity wall of the installation cavity 111 away from the cabinet door 12. The first closing plate 22 slides and is embedded in the first slide groove 1115. The sliding direction of the first closing plate 22 is vertical. The first closing plate 22 is provided with a plurality of first through grooves 221. The first through grooves 221 penetrate the first closing plate 22 along the thickness direction of the first closing plate 22, and the plurality of first through grooves 221 are distributed at intervals along the sliding direction of the first closing plate 22. In this embodiment, there are eight first through grooves 221, and the eight first through grooves 221 are evenly distributed along the sliding direction of the first closing plate 22. A plurality of first communication holes 112 are defined at the bottom of the first chute 1115. These first communication holes 112 are configured to communicate with the first through-slots 221, which in turn communicate with the connecting cavity 116. The plurality of first communication holes 112 are organized into eight groups, each corresponding to the eight first through-slots 221. The plurality of first communication holes 112 in the same group are spaced apart along the width of the cabinet 11. In this embodiment, there are forty first communication holes 112, with each group of five first communication holes 112 evenly distributed across the width of the cabinet 11.

[0039] Reference Figure 3 and Figure 4The heat dissipation mechanism 2 also includes a second sealing plate 24. Second sliding grooves 1116 are respectively provided on the side walls of the mounting cavity 111 along the width direction of the cabinet body 11. The number of second sealing plates 24 is equal to the number of second sliding grooves 1116, and the second sealing plates 24 slide into the second sliding grooves 1116, and the sliding direction of the second sealing plate 24 is parallel to the sliding direction of the first sealing plate 22. The second sealing plate 24 is provided with a plurality of second through-slots 241, which extend through the second sealing plate 24 along its thickness. The plurality of second through-slots 241 are spaced apart along the sliding direction of the second sealing plate 24. In this embodiment, there are eight second through-slots 241, which are evenly distributed along the sliding direction of the second sealing plate 24. The bottom of the second chute 1116 is provided with a plurality of second communicating holes 114, which are used to communicate with the second through-slots 241 and the connecting cavity 116. The plurality of second communicating holes 114 are divided into eight groups, each corresponding to the eight second through-slots 241. The plurality of second communicating holes 114 in the same group are spaced apart along the length of the cabinet 11. In this embodiment, there are forty second communicating holes 114, and the plurality of second communicating holes 114 in the same group are evenly distributed along the length of the cabinet 11.

[0040] Reference Figure 2 and Figure 4 A third groove 1117 is provided on the lower wall of the first slide groove 1115 and the second slide groove 1116. The heat dissipation mechanism 2 also includes a heat expansion block 21. The number of the heat expansion blocks 21 is the same as the number of the third grooves 1117 and corresponds one to one. The heat expansion block 21 is embedded in the third groove 1117. The heat expansion block 21 is used to drive the first closing plate 22 or the second closing plate 24 to slide.

[0041] Reference Figure 2 The heat dissipation mechanism 2 also includes a slide 25 and a first reset member 23. A third slide groove 113 is provided on the upper wall of the installation cavity 111. The third slide groove 113 is connected to the first slide groove 1115 and the second slide groove 1116. The slide 25 is fixedly connected to the upper end of the first closing plate 22. The slide 25 slides and is embedded in the third slide groove 113. The sliding direction of the slide 25 is parallel to the sliding direction of the first closing plate 22. The slide 25 abuts against the upper end of the second closing plate 24. The first reset member 23 is connected between the slide 25 and the cabinet 11. The first reset member 23 causes the first through-slot 221 and the second connecting hole 114 and the second through-slot 241 and the second connecting hole 114 to have a tendency to disconnect. In this embodiment, the first reset member 23 is a spring. One end of the first reset member 23 is connected to the side surface of the slide 25 away from the first closing plate 22, and the other end of the first reset member 23 is connected to the upper wall of the third slide groove 113.

[0042] The ring main unit 1 also includes a slider 13, a fifth reset member 14, and a spacer 16. The number of sliders 13 and spacers 16 is the same as the number of the cabinet body 11 and corresponds one-to-one. A fourth chute 1111 is provided at the lower end of the cabinet body 11. The slider 13 slides and is embedded in the fourth chute 1111. The slider 13 slides vertically, and the sidewalls of the slider 13 are aligned with the walls of the fourth chute 1111. The fifth reset member 14 is connected between the slider 13 and the cabinet body 11. The fifth reset member 14 causes the lower end of the slider 13 to extend out of the fourth chute 1111. In this embodiment, the fifth reset member 14 is a spring. A third embedded groove 132 is provided at the upper end of the slider 13. One end of the fifth reset member 14 is connected to the bottom of the third embedded groove, and the other end of the fifth reset member 14 is connected to the bottom of the fourth chute 1111. There are four third engaging grooves 132, distributed at the four corners of the slider 13. The number of fifth return members 14 is the same as the number of third engaging grooves 132, and they correspond one to one. A connecting groove 1112 is provided on the groove wall of the fourth slide groove 1111 away from the cabinet door 12. The connecting groove 1112 communicates with the outside world, and the upper groove wall of the connecting groove 1112 is flush with the bottom of the fourth slide groove 1111. One end of the pad 16 passes through the connecting groove 1112 and abuts against the groove wall of the fourth slide groove 1111 close to the cabinet door 12. The side wall of the pad 16 fits with the groove wall of the connecting groove 1112. The end of the pad 16 away from the cabinet door 12 is flush with the outer wall of the cabinet body 11. The two ends of the pad 16 in the vertical direction respectively abut against the bottom of the fourth slide groove 1111 and the upper end of the slider 13. The end of the pad 16 close to the cabinet body 11 is provided with an avoidance groove 161, and the avoidance groove 161 is used for the fifth reset member 14 to be embedded. The end of the pad 16 away from the cabinet door 12 is provided with a gripping groove 162, and the gripping groove 162 is used for the user's fingers to be embedded.

[0043] Reference Figure 4 and Figure 5The heat dissipation mechanism 2 also includes a locking assembly 217, which includes a locking block 2171 and a sixth restoring member 2172. A first engaging groove 223 is defined on the surface of the first closing plate 22 near the bottom of the first chute 1115. The first engaging groove 223 is located on the side of the first closing plate 22 near the receiving groove. A second engaging groove 244 is defined on the surface of the second closing plate 24 near the bottom of the second chute 1116. The second engaging groove 244 is located on the side of the second closing plate 24 near the receiving groove. Locking grooves 1113 are defined on the bottom of the first chute 1115 or the second chute 1116. The number of locking grooves 1113, locking blocks 2171, and sixth restoring members 2172 is equal to the sum of the number of first engaging grooves 223 and second engaging grooves 244, and they correspond one-to-one. The locking block 2171 slides into the first or second groove 223, 244. The sliding direction of the locking block 2171 is perpendicular to the sliding direction of the first sealing plate 22, and the sidewalls of the locking block 2171 abut against the walls of the first or second groove 223, 244. The end of the locking block 2171 facing away from the first or second groove 223, 244 is adapted to engage with the locking groove 1113. A sixth return member 2172 is connected between the locking block 2171 and the first or second sealing plate 22, 24. The sixth return member 2172 forces the locking block 2171 to extend out of the first or second groove 223, 244. In this embodiment, the sixth return member 2172 is a spring. One end of the sixth return member 2172 is connected to the end of the locking block 2171 facing away from the locking groove 1113, and the other end of the sixth return member 2172 is connected to the bottom of the first or second groove 223, 244. The bottom of the fourth chute 1111 is provided with a first connecting groove 1114, which communicates with the locking groove 1113. The number of first connecting grooves 1114 is the same as the number of locking grooves 1113, and the number of first connecting grooves 1114 is one-to-one. A push rod 131 is fixedly connected to the upper end of the slider 13. The number of push rods 131 is the same as the number of first connecting grooves 1114, and the push rod 131 slides in the first connecting groove 1114. The push rod 131 slides vertically, and the side surface of the push rod 131 near the installation cavity 111 is flush with the bottom of the first chute 1115 or the second chute 1116. The locking block 2171 has a chamfer 21711 on the end away from the bottom of the first embedding groove 223 or the second embedding groove 244. The chamfer 21711 is located on the side of the locking block 2171 near the fourth chute 1111 and is designed to abut the end of the push rod 131 away from the slider 13.

[0044] Reference Figure 3 and Figure 6The heat dissipation mechanism 2 also includes a fixing assembly 26, which includes a fixing post 261, a magnetic ring 262, and a second reset member 263. Four fixing grooves 242 are provided on the surface of the second closing plate 24 near the bottom of the second chute 1116. The four fixing grooves 242 are distributed at the four corners of the second closing plate 24. A first groove 115 is provided at the bottom of the second chute 1116. The number of first grooves 115, fixing posts 261, magnetic rings 262, and second reset members 263 is the same as the number of fixing grooves 242 and corresponds one-to-one. The magnetic ring 262 coaxially slides and fits within the first groove 115. The outer wall of the magnetic ring 262 fits against the wall of the first groove 115, and the magnetic rings 262 in adjacent cabinets 11 repel each other. A retaining ring 1118 is coaxially fixedly connected to the wall of the first groove 115 near the second chute 1116. The retaining ring 1118 is used to abut against the end of the magnetic ring 262 near the second chute 1116. One end of the fixed post 261 is coaxially fixedly connected to the inner side of the magnetic ring 262. The outer wall of the fixed post 261 is aligned with the inner wall of the magnetic ring 262. The other end of the fixed post 261 is used to be embedded in the fixed groove 242. The side wall of the fixed post 261 is aligned with the inner wall of the retaining ring 1118. The second reset member 263 is connected between the magnetic ring 262 and the cabinet 11. The second reset member 263 allows the end of the fixed post 261 away from the magnetic ring 262 to have a tendency to be embedded in the first groove 115. In this embodiment, the second reset member 263 is a spring. The second reset member 263 is sleeved on the outer periphery of the fixed post 261. One end of the second reset member 263 is connected to the end of the magnetic ring 262 near the second slide groove 1116, and the other end of the second reset member 263 is connected to the side surface of the retaining ring 1118 away from the second slide groove 1116.

[0045] Reference Figure 2 The heat dissipation assembly also includes a cooling fan 27, a contact switch 28, and a filter assembly 216. The filter assembly 216 includes a filter 2161. A mounting groove 1110 is provided on the side of the cabinet body 11 away from the cabinet door 12, and the filter 2161 is embedded in the mounting groove 1110. An air outlet 117 is provided at the bottom of the mounting groove 1110. The air outlet 117 is connected to the connecting cavity 116. The air outlet 117 is located on the side of the connecting cavity 116 away from the fourth slide groove 1111. The cooling fan 27 is embedded in the air outlet 117. The contact switch 28 is fixedly connected to the bottom of the third slide groove 113. The contact switch 28 is electrically connected to the cooling fan 27. The contact switch 28 is used for the slide plate 25 to abut against.

[0046] Reference Figure 7The heat dissipation assembly also includes a baffle 212, a third reset member 214, a magnetic block 213, and an electromagnet 215. An air inlet 119 is provided at the bottom of the mounting slot 1110. The air inlet 119 is located below the connecting cavity 116 and communicates with the mounting cavity 111. Two air inlets 119 are provided, and the two air inlets 119 are symmetrically distributed along the width of the cabinet 11. A fifth chute 1119 is provided at the bottom of the mounting slot 1110. The fifth chute 1119 communicates with the air inlet 119. The number of the fifth chute 1119, baffle 212, and magnetic block 213 is the same as the number of air inlets 119 and corresponds one-to-one. The baffle 212 slides within the fifth chute 1119 to open and close the air inlet 119. The baffle 212 slides vertically. The cabinet 11 is provided with a fourth groove 1120, which is located above the mounting slot 1110. A second connecting groove 1121 is provided on the upper wall of the fifth slide 1119 and communicates with the fourth groove 1120. A connecting rod 2121 is fixedly connected to the side wall of the baffle 212 and slidably fits within the second connecting groove 1121. A magnet 213 is fixedly connected to the end of the connecting rod 2121 away from the baffle 212. A fifth groove 1122 is provided on the wall of the second connecting groove 1121 near the end of the fourth groove 1120. The magnet 213 fits within the fifth groove 1122. An electromagnet 215 is fixedly connected to the wall of the fourth groove 1120 away from the mounting groove 1110. The electromagnet 215 is electrically connected to the cooling fan 27 and the contact switch 28 and is used to attract the magnet 213. A third reset member 214 is connected between the baffle 212 and the cabinet 11 and causes the baffle 212 to tend to close the air inlet 119. In this embodiment, the third return member 214 is a spring. One end of the third return member 214 is connected to the end of the baffle 212 near the connecting rod 2121, and the other end of the third return member 214 is connected to the side wall of the fifth sliding groove 1119 near the second connecting groove 1121. There are two third return members 214 for each baffle 212, and the two third return members 214 are symmetrically distributed along the width of the cabinet 11.

[0047] The filter assembly 216 also includes a knocking block 2162, a rotating shaft 2165, a connecting rope 2163 and a seventh reset member 2164. The rotating shaft 2165 is rotatably embedded in the mounting groove 1110. The rotating axis of the rotating shaft 2165 is parallel to the width direction of the cabinet 11. The rotating shaft 2165 is located on the side of the filter 2161 close to the cooling fan 27. One end of the knocking block 2162 is fixedly connected to the rotating shaft 2165. There are several knocking blocks 2162, and the knocking blocks 2162 are spaced apart along the rotating axis of the rotating shaft 2165. In this embodiment, there are seven knocking blocks 2162, and the seven knocking blocks 2162 are evenly distributed along the rotating axis of the rotating shaft 2165. One end of the connecting rope 2163 is fixedly connected to the side of the knocking block 2162 away from the filter 2161. The connection between the connecting rope 2163 and the knocking block 2162 is located on the side of the knocking block 2162 away from the rotating shaft 2165. A connecting channel 1123 is provided on the side of the fifth groove 1122 away from the fourth groove 1120. This connecting channel 1123 communicates with the mounting groove 1110. The axis of the connecting channel 1123 is vertical. The other end of the connecting rope 2163 passes through the connecting channel 1123 and is fixedly connected to the side of the magnetic block 213 near the connecting rod 2121. A seventh restoring member 2164 is connected between the cabinet 11 and the rotating shaft 2165. This seventh restoring member 2164 ensures that the end of the striking block 2162 away from the rotating shaft 2165 tends to strike the filter 2161. In this embodiment, the seventh reset member 2164 adopts a torsion spring, and a sixth groove 1124 is respectively provided on the groove walls on both sides of the installation groove 1110 along the width direction of the cabinet body 11. One end of the seventh reset member 2164 is connected to the bottom of the sixth groove 1124, and the outer periphery of the rotating shaft 2165 is coaxially fixedly connected with a connecting ring 2166. The other end of the seventh reset member 2164 is connected to the side surface of the connecting ring 2166 away from the other connecting ring 2166.

[0048] Reference Figure 8 and Figure 9The heat dissipation mechanism 2 also includes a temperature sensor 29, a drive cylinder 210, and a limit assembly 211. A first limit groove 222 is provided on the surface of the first closing plate 22 near the bottom of the first chute 1115. The first limit groove 222 is located on the side of the first closing plate 22 away from the fourth chute 1111. A second limit groove 243 is provided on the surface of the second closing plate 24 near the bottom of the second chute 1116. The second limit groove 243 is located on the side of the second closing plate 24 away from the fourth chute 1111. A second groove 118 is provided at the bottom of the first chute 1115 or the second chute 1116. The number of second grooves 118, drive cylinder 210, and limit assembly 211 is equal to the sum of the number of first limit grooves 222 and second limit grooves 243, and they correspond one-to-one. In this embodiment, when the slide plate 25 abuts the contact switch 28 and the heat dissipation fan 27 is in operation, the second groove 118 directly faces the first limit groove 222 and the second limit groove 243. The limiting assembly 211 includes a sliding seat 2111, a fourth restoring member 2112, and a limiting block 2113. The sliding seat 2111 is coaxially slidably embedded in the second groove 118, with the sidewalls of the sliding seat 2111 abutting against the walls of the second groove 118. The limiting block 2113 is slidably connected to the sliding seat 2111. The sliding direction of the limiting block 2113 is parallel to the sliding direction of the sliding seat 2111, and the sidewalls of the limiting block 2113 abut against the walls of the second groove 118. The end of the limiting block 2113 away from the sliding seat 2111 is adapted to be inserted into the first limiting groove 222 or the second limiting groove 243. The fourth restoring member 2112 is connected between the sliding seat 2111 and the limiting block 2113, and the fourth restoring member 2112 forces the limiting block 2113 to move away from the sliding seat 2111. In this embodiment, the fourth return member 2112 is a spring. One end of the fourth return member 2112 is connected to the end of the sliding seat 2111 near the mounting cavity 111, and the other end of the fourth return member 2112 is connected to the end of the limit block 2113 away from the mounting cavity 111. The drive cylinder 210 is embedded in the second groove 118 and is used to drive the sliding seat 2111 to slide. In this embodiment, the drive cylinder 210 is a pneumatic cylinder. The cylinder body of the drive cylinder 210 is fixedly connected to the bottom of the second groove 118, and the piston rod of the drive cylinder 210 is fixedly connected to the end of the sliding seat 2111 away from the limit block 2113.

[0049] Reference Figure 2 and Figure 8 The heat dissipation mechanism 2 further includes a temperature sensor 29, which is fixedly connected to a surface of the slide plate 25 that is away from the bottom of the third slide groove 113. The temperature sensor 29 is used to detect the temperature within the installation cavity 111. In this embodiment, when the temperature within the installation cavity 111 is within a safe range, the piston rod of the drive cylinder 210 retracts, and the end of the limit block 2113 away from the sliding seat 2111 is embedded in the second groove 118.

[0050] The implementation principle of a solid-insulated ring main unit (RMU) in the embodiment of the present application is as follows: when the RMU body 1 is installed at a specified external position, the spacer 16 is pulled out, the slider 13 overcomes the elastic force of the fifth reset member 14 and engages with the fourth slide groove 1111, the push rod 131 moves upward to abut the chamfer 21711, pushing the locking block 2171 out of the locking groove 1113, thereby releasing the lock between the first and second closing plates 22, 24 and the cabinet body 11. When multiple RMU bodies 1 are connected on one side, the magnetic rings 262 in two adjacent RMU bodies 1 repel each other, the magnetic rings 262 overcome the second reset member 263 and disengage, driving the fixing column 261 to engage with the fixing groove 242, thereby locking the second closing plate 24 and the cabinet body 11.

[0051] When the ring main unit 1 is in operation, the temperature in the installation cavity 111 rises, the heat-expanding block 21 expands, pushing the first closing plate 22 and the second closing plate 24 upward, driving the first connecting hole 112 to communicate with the first through-slot 221, the second connecting hole 114 to communicate with the second through-slot 241, and the installation cavity 111 to communicate with the connecting cavity 116, so that the air in the installation cavity 111 can exchange heat with the outside world. When the temperature in the installation cavity 111 continues to rise, the heat-expanding block 21 continues to expand, the first connecting hole 112 faces the first through-slot 221, the second connecting hole 114 faces the second through-slot 241, the slide plate 25 abuts the contact switch 28, and the cooling fan 27 starts to work, accelerating the exchange efficiency between the installation cavity 111 and the outside air. The electromagnet 215 is energized, attracting the magnetic block 213, driving the baffle 212 to overcome the elastic force of the third reset member 214 and move upward, and the air inlet 119 is connected to the outside world. The magnetic block 213 drives the end of the knocking block 2162 away from the rotating shaft 2165 via the connecting rope 2163 to rotate away from the filter 2161. The limiting block 2113 is elastically engaged with the first limiting groove 222 and the second limiting groove 243 by the fourth restoring member 2112, thereby locking the first and second closing plates 22, 24 to the cabinet 11.

[0052] The temperature in the installation cavity 111 drops, and the heat expansion block 21 shrinks. When the temperature in the installation cavity 111 drops to a safe range, the temperature sensor 29 detects the temperature in the installation cavity 111 and sends a signal to the drive cylinder 210. The piston rod of the drive cylinder 210 shrinks, driving the sliding seat 2111 to slide away from the first closing plate 22 and the second closing plate 24, driving the limit block 2113 to disengage from the first limit groove 222 and the second limit block 2113, contacting the first closing plate 22 and the second closing plate 24 and the lock with the cabinet 11, and the first reset member 23 drives the slide plate 25 to move downward, so that the first through groove 221 is not connected to the first connecting hole 112, and the second through groove 241 is not connected to the second through groove 241. The contact switch 28 is turned on, the cooling fan 27 stops working, the electromagnet 215 loses its magnetism, the baffle 212 closes the air inlet 119 driven by the elastic force of the third reset member 214, and the knocking block 2162 rotates and knocks the filter 2161 under the action of the seventh reset member 2164 to clean the filter 2161.

[0053] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A solid insulated ring main unit, characterized by: The invention comprises a cabinet body (11), a cabinet door (12) and a heat dissipation mechanism (2); a mounting cavity (111) is provided on one side of the cabinet body (11); the mounting cavity (111) is used for installing components; the cabinet door (12) is connected to the cabinet body (11) and covers the opening of the mounting cavity (111); the heat dissipation mechanism (2) comprises a heat expansion block (21), a first closing plate (22) and a first reset member (23); the first closing plate (22) is slidably embedded in the mounting cavity (111); the first closing plate (22) is provided with a first through groove (23); 21); a first communicating hole (112) is provided on the wall of the installation cavity (111); the first communicating hole (112) is used to communicate with the first through groove (221); the heat-expanding block (21) is embedded in the installation cavity (111); the heat-expanding block (21) is used to drive the first closing plate (22) to slide; the first resetting member (23) is connected between the cabinet (11) and the first closing plate (22); the first resetting member (23) makes the first through groove (221) and the first communicating hole (112) have a tendency to be disconnected.

2. The solid insulated ring main unit according to claim 1, characterized in that: The heat dissipation mechanism (2) further comprises a second closing plate (24); a third sliding groove (113) is provided on the upper wall of the installation cavity (111); a slide plate (25) is connected to the upper end of the first closing plate (22); the slide plate (25) is slidably embedded in the third sliding groove (113); the sliding direction of the slide plate (25) is vertical; the first closing plate (22) is retracted to be located on a side of the installation cavity (111) away from the cabinet door (12); the second closing plate (24) is slidably embedded in the installation cavity (111); the sliding direction of the second closing plate (24) is parallel to the sliding direction of the slide plate (25); the upper end of the second closing plate (24) is The end is used to abut against the slide plate (25); the second closing plate (24) is provided with a second through groove (241); the cavity wall of the installation cavity (111) is provided with a second communicating hole (114); the second communicating hole (114) is used to communicate with the second through groove (241); there are two second closing plates (24); the two second closing plates (24) are symmetrically distributed along a direction perpendicular to the sliding direction of the slide plate (25); the number of the heat expansion blocks (21) is the same as the sum of the number of the first closing plate (22) and the second closing plate (24) and has a one-to-one correspondence; the heat expansion blocks (21) drive the second closing plate (24) to slide.

3. The solid insulated ring main unit according to claim 2, characterized in that: The second closing plate (24) is provided with a fixing groove (242) on one side close to the wall of the installation cavity (111); a first groove (115) is provided on the wall of the installation cavity (111); the number of the first groove (115), the fixing column (261), the magnetic ring (262) and the second resetting member (263) is the same as the number of the fixing groove (242) and corresponds to each other; the magnetic ring (262) is slidably embedded in the first groove (115) 15); the magnetic ring (262) and the magnetic ring (262) of the adjacent cabinet (11) repel each other; one end of the fixing column (261) is connected to the magnetic ring (262); the other end of the fixing column (261) is used to be embedded in the fixing groove (242); the second reset member (263) is connected between the magnetic ring (262) and the cabinet (11); the second reset member (263) makes the end of the fixing column (261) away from the magnetic ring (262) have a tendency to be embedded in the first groove (115).

4. The solid insulated ring main unit according to claim 2, characterized in that: The heat dissipation mechanism (2) further includes a heat dissipation fan (27) and a contact switch (28); the cabinet (11) is provided with a connecting cavity (116); the connecting cavity (116) is arranged around the installation cavity (111); the connecting cavity (116) is connected to the first connecting hole (112) and the second connecting hole (114); an air outlet (117) is provided at the outer cavity wall of the connecting cavity (116); the heat dissipation fan (27) is embedded in the air outlet (117); the contact switch (28) is embedded in the third sliding groove (113); the contact switch (28) is used for the slide plate (25) to abut against; the contact switch (28) is electrically connected to the heat dissipation fan (27).

5. The solid insulated ring main unit according to claim 4, characterized in that: The invention also includes a temperature sensor (29), a drive cylinder (210) and a limit assembly (211); a first limit groove (222) is provided on one side of the first closing plate (22) close to the wall of the installation cavity (111); a second limit groove (243) is provided on one side of the second closing plate (24) close to the wall of the installation cavity (111); a second groove (118) is provided on the wall of the installation cavity (111); the second groove (118), the drive cylinder (210) and The number of the limiting components (211) is the same as the sum of the number of the first limiting groove (222) and the second limiting groove (243) and corresponds one to one; the limiting component (211) includes a sliding seat (2111), a fourth reset member (2112) and a limiting block (2113); the sliding seat (2111) is coaxially slidably embedded in the second groove (118); the limiting block (2113) is slidably connected to a side of the sliding seat (2111) close to the mounting cavity (111) The sliding direction of the limit block (2113) is parallel to the sliding direction of the sliding seat (2111); the limit block (2113) is used to be embedded in the first limit groove (222) or the second limit groove (243); the fourth reset member (2112) is connected between the limit block (2113) and the sliding seat (2111); the fourth reset member (2112) makes the limit block (2113) have a tendency to move away from the sliding seat (2111); the driving The cylinder (210) is embedded in the second groove (118); the driving cylinder (210) is used to drive the limit block (2113) to slide; the temperature sensor (29) is embedded in the installation cavity (111); the temperature sensor (29) is used to detect the temperature in the installation cavity (111); when the temperature in the installation cavity (111) is within a safe range; the end of the limit block (2113) away from the sliding seat (2111) is embedded in the second groove (118).

6. The solid insulated ring main unit according to claim 4, characterized in that: The heat dissipation mechanism (2) further includes a baffle (212), a magnetic block (213), a third reset member (214) and an electromagnet (215); an air inlet (119) is provided on the wall of the installation cavity (111); the air inlet (119) is located below the connection cavity (116); the air inlet (119) is connected to the outside; the baffle (212) is slidably connected to the cabinet (11) to realize the opening and closing of the air inlet (119); the third reset member (214 ... provided on the wall of the installation cavity (111); the air inlet (119) is provided on the wall of the installation cavity (111); the air inlet (119) is provided on the wall of the installation cavity (111); the air inlet (119) is provided on The component (214) is connected between the baffle (212) and the cabinet (11); the third reset component (214) causes the baffle (212) to have a tendency to close the air inlet (119); the magnet is connected to the baffle (212); the electromagnet (215) is connected to the cabinet (11); the electromagnet (215) is electrically connected to the cooling fan (27) and the contact switch (28); and the electromagnet (215) is used to attract the magnetic block (213).

7. The solid insulated ring main unit according to claim 6, characterized in that: The heat dissipation mechanism (2) further comprises a filter assembly (216); the filter assembly (216) comprises a filter screen (2161); a mounting groove (1110) is provided on the outer wall of the cabinet (11); the mounting groove (1110) is connected to the air outlet (117) and the air inlet (119); and the filter screen (2161) is embedded in the mounting groove (1110).

8. The solid insulated ring main unit according to claim 7, characterized in that: The filter assembly (216) further comprises a connecting rope (2163), a knocking block (2162) and a seventh resetting member (2164); one end of the knocking block (2162) is rotatably embedded in the mounting groove (1110); the rotation axis of the knocking block (2162) is horizontal; one end of the connecting rope (2163) is connected to the other end of the knocking block (2162); the other end of the connecting rope (2163) is connected to the magnetic block (213); the seventh resetting member (2164) is connected between the knocking block (2162) and the cabinet (11); the seventh resetting member (2164) enables the knocking block (2162) to have a tendency to hit the filter screen (2161).

9. The solid insulated ring main unit according to claim 2, characterized in that: The cabinet (11) further comprises a slider (13), a fifth reset member (14) and a pad (16); the heat dissipation mechanism (2) further comprises a locking block (2171) and a sixth reset member (2172); a fourth slide groove (1111) is provided at the lower end of the cabinet (11); the slider (13) is slidably embedded in the fourth slide groove (1111); the sliding direction of the slider (13) is vertical; the fifth reset member (14) is connected between the slider (13) and the cabinet (11); the fifth reset member (14) makes the slider (13) have a tendency to extend out of the fourth slide groove (1111); the fourth slide groove (111 1) A connecting groove (1112) is provided on the groove wall; the connecting groove (1112) is connected to the outside; one end of the pad (16) passes through the connecting groove (1112) and is embedded in the fourth slide groove (1111); the two ends of the pad (16) respectively abut the bottom of the fourth slide groove (1111) and the upper end of the slider (13); the number of the locking block (2171) and the sixth reset member (2172) is the same as the sum of the number of the first closing plate (22) or the second closing plate (24) and corresponds one to one; the locking block (2171) is slidably connected to the first closing plate (22) or the second closing plate (24); The sliding direction of the locking block (2171) is perpendicular to the sliding direction of the first closing plate (22); a locking groove (1113) is provided on the wall of the installation cavity (111); the locking groove (1113) is used for the locking block (2171) to be embedded; the sixth reset member (2172) is connected between the locking block (2171) and the first closing plate (22) or the second closing plate (24); the sixth reset member (2172) makes the locking block (2171) have a tendency to be embedded in the locking groove (1113); the bottom of the fourth sliding groove (1111) is provided with a first connecting groove (1114); The first connecting groove (1114) is connected to the locking groove (1113); the slider (13) is connected to a push rod (131); the push rod (131) is slidably embedded in the first connecting groove (1114); one end of the locking block (2171) embedded in the locking groove (1113) is provided with a chamfer (21711); the chamfer (21711) is located on a side of the locking block (2171) close to the slider (13); the chamfer (21711) is used for abutment by the push rod (131); a surface of one side of the push rod (131) close to the installation cavity (111) is flush with the cavity wall of the installation cavity (111).

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