High-voltage ring main unit capable of being quickly assembled and disassembled

Abstract

The invention discloses a high-voltage ring main unit capable of being quickly disassembled and assembled, and relates to the technical field of ring main units, bottom side plates are connected to the two sides of the top of a fixed base, connecting strips are welded to the tops and the bottoms of the bottom side plates, a top side plate is connected to the tops of the bottom side plates, and connecting grooves are formed in the positions, corresponding to the connecting strips, of the two sides of the top of the fixed base; connecting grooves are formed in the top and the bottom of the top side plate, the connecting strips are slidably embedded into the adjacent connecting grooves, clamping openings are formed in the two ends of the top and the two ends of the bottom of the bottom side plate, clamping openings are formed in the two ends of the top of the fixing base and the two ends of the bottom of the top side plate, and fixing boxes are movably embedded into the two adjacent clamping openings. According to the ring main unit, the modular design is adopted, all the assemblies can be rapidly disassembled and assembled, the time and cost needed for installation and maintenance are reduced, the tool-free rapid connection technology is adopted for the ring main unit, and therefore operators can complete disassembling and assembling of the ring main unit without using extra tools.

Description

Technical Field

[0001] The present invention relates to the technical field of ring main units, and particularly to a high-voltage ring main unit that can be quickly disassembled and assembled. Background Art

[0002] A ring main unit is a set of power transmission and distribution electrical equipment installed in a metal or non-metal insulated cabinet body or made into a prefabricated sectionalized ring main power supply unit. Its core part uses a load switch and a fuse, and has the advantages of simple structure, small volume, low price, improved power supply parameters and performance, and power supply safety. It is widely used in distribution substations and box-type substations in load centers such as urban residential areas, high-rise buildings, large public buildings, and industrial enterprises.

[0003] In the Chinese patent with the application number CN202322117935.5 and the name of "A Quickly Disassembled and Assembled Series High-Voltage Ring Main Unit", the side plate is inserted into the cabinet body by a sliding-in method. After the side plate slides into the cabinet body, it does not need to be manually supported, and the fixing part and the positioning rod can be directly fixed at the back end of the cabinet body. When disassembling, only the fixing part and the auxiliary part need to be loosened, and the disassembly and assembly are convenient and fast; However, this patent can only quickly disassemble and assemble the side plates at the bottom of the ring main unit, and the back plate and the top box body of the ring main unit cannot be disassembled and assembled. When the operator repairs the electrical components, the back plate of the ring main unit will hinder the operator from repairing the electrical components, and the repair is inconvenient. Moreover, if the electrical components installed inside the top box body are heavy, when the side plates of this patent ring main unit are disassembled, the cabinet body is prone to tipping after being stressed, threatening the personal safety of the on-site operator. Summary of the Invention

[0004] The present invention provides a high-voltage ring main unit that can be quickly disassembled and assembled, which can effectively solve the problems in the above background art that this patent can only quickly disassemble and assemble the side plates at the bottom of the ring main unit, and the back plate and the top box body of the ring main unit cannot be disassembled and assembled. When the operator repairs the electrical components, the back plate of the ring main unit will hinder the operator from repairing the electrical components, and the repair is inconvenient. Moreover, if the electrical components installed inside the top box body are heavy, when the side plates of this patent ring main unit are disassembled, the cabinet body is prone to tipping after being stressed, threatening the personal safety of the on-site operator.

[0005] To achieve the above object, the present invention provides the following technical solution: A high-voltage ring main unit that can be quickly disassembled and assembled, including a fixed base, and a quick disassembly and assembly component is arranged on the top of the fixed base, and the quick disassembly and assembly component includes a bottom side plate; Both sides of the top of the fixed base are connected with bottom side plates. Connecting bars are welded to both the top and bottom of the bottom side plates. The top of the bottom side plates is connected with top side plates. Connecting grooves are formed at positions corresponding to the connecting bars on both sides of the top of the fixed base. Connecting grooves are also formed at the top and bottom of the top side plates. The connecting bars are slidably inserted into the adjacent connecting grooves. Clamping openings are formed at both ends of the top and bottom of the bottom side plates. Clamping openings are also formed at both ends of the top of the fixed base and both ends of the bottom of the top side plates. A fixed box is movably inserted into the adjacent two clamping openings. A limiting slide bar is installed at the inner bottom of the fixed box. Fixed clips are slidably connected to both ends of the limiting slide bar.

[0006] According to the above technical solution, a driving rack is connected to the top of the fixed clip. A driving gear is rotatably installed at the inner top of the fixed box and in the middle of the adjacent two driving racks. The driving gear meshes with the adjacent two driving racks. One end of the rotation central axis of the driving gear is connected with a rotating ear. A return spring is connected between the adjacent two fixed clips.

[0007] According to the above technical solution, the longitudinal cross-sectional shapes of the connecting bar and the connecting groove are mutually fitting "T" shapes. The outer side of the connecting bar and the inner side of the connecting groove are both smooth surfaces. A bottom back plate is connected between the adjacent two bottom side plates. A top back plate is connected between the adjacent two top side plates. A plurality of fixing holes are evenly formed on both sides of the bottom back plate and the top back plate.

[0008] According to the above technical solution, fixing outer cylinders are installed at positions corresponding to each fixing hole on one side inside the bottom side plates and the top side plates. A fixing head is slidably connected inside the fixing outer cylinder. A tightening spring is connected between one end inside the fixing outer cylinder and one end inside the fixing head. Fixing grooves are formed on both sides of the fixing head. A pulling ear is connected to the top end of the fixing head. The pulling ear penetrates through the adjacent fixing hole. U-shaped pins are connected to both outer sides of the bottom back plate and the top back plate. The U-shaped pins are movably inserted into the adjacent fixing grooves.

[0009] According to the above technical solution, a sealing top plate is connected between the middle of the tops of the adjacent two top side plates. Fixing bars are welded to both sides of the bottom of the sealing top plate. The fixing bars are movably inserted into the adjacent connecting grooves.

[0010] According to the above technical solution, two connecting holes are formed on one side of the top of the sealing top plate. Support slide bars are installed on both sides of the outer top of the top back plate. A lifting rod is slidably connected to the outer sides of the adjacent two support slide bars. Connecting heads are welded to both ends of the top of the lifting rod. The connecting heads penetrate through the adjacent connecting holes. A connecting spring is connected between the bottom of the lifting rod and the bottom of the support sliding rod. A pull rod is rotatably connected to the middle of the bottom of the lifting rod. A limiting plate is welded to the bottom end of the pull rod. A limiting rod is welded to the middle of the outer side of the top back plate.

[0011] According to the above technical solution, an assembly frame is installed in the middle of the sealing top plate on the top of the fixed base. An assembly plate is fixed to the top of the assembly frame by bolts. The assembly plate is located at the connection position between the bottom side plate and the top side plate. Instrument doors are hinged to one side of one of the bottom side plates and one side of the top side plate respectively.

[0012] According to the above technical solution, fixed connection components are provided at both the bottom and the top of the fixed base. The fixed connection component includes a limiting bottom plate; The limiting bottom plate is installed at the bottom of the fixed base. Limiting grooves are provided on both sides of the top of the limiting bottom plate. A support bottom plate is installed on the top of the limiting bottom plate. Locking rollers are installed at the four corners of the bottom of the support bottom plate. The locking rollers are embedded inside the adjacent limiting grooves. A rotating base is rotatably installed on the top of the support bottom plate. The rotating base is connected to the bottom of the fixed base by bolts; An assembly frame is welded to one end of the fixed base. An assembly block is welded to the other end of the fixed base. The assembly block is embedded inside the adjacent assembly frame and is connected by a connecting pin.

[0013] According to the above technical solution, limiting top cylinders are installed on both sides of the bottom of the rotating base. Limiting bottom cylinders are installed on both sides of the top of the support bottom plate. A limiting plug is slidably connected inside the limiting bottom cylinder. A limiting spring is connected between one end inside the limiting plug and one end inside the limiting bottom cylinder. A fixed ear is welded to one side of the outside of the limiting plug. The limiting plug is embedded inside the adjacent limiting top cylinder. A guiding port is provided on one side of the limiting bottom cylinder. A fixing port is provided at the bottom of the guiding port.

[0014] According to the above technical solution, an air inlet is installed on one side of the fixed base. A plurality of ventilation holes are evenly provided on the top of the assembly plate. Heat dissipation holes are provided on both sides of the top of the sealing top plate. An arc-shaped sleeve is connected to the position corresponding to the heat dissipation hole on the top of the sealing top plate. A dust-proof net is movably embedded at the top of the heat dissipation hole at the bottom of the arc-shaped sleeve; A connecting pipe is movably embedded inside the adjacent two arc-shaped sleeves on the tops of two different sealing top plates. A series plate is welded between the adjacent two connecting pipes. A communication port is provided at the bottom of the connecting pipe. A heat dissipation fan is installed at one end of the connecting pipe. The input end of the heat dissipation fan is electrically connected to the output end of an external power supply.

[0015] Compared with the prior art, the beneficial effects of the present invention: 1. A quick disassembly and assembly component is provided. The fixed box is placed inside the clamping opening. The operator drives the driving rack to move by rotating the ear. When the fixed clamp moves to the joint between the bottom side plate and the fixed base, the rotating ear is released, and the return spring rebounds. Under the clamping of the fixed clamp, the bottom side plate and the fixed base are connected and fixed. Under the limiting and supporting effect between the connecting strip and the connecting groove, when the bottom side plate and the top side plate are installed, the bottom side plate and the top side plate will not tip over, and the installation is stable and convenient. When overhauling electrical components, the lifting rod is pulled by holding the pull rod, the connecting head is separated from the connecting hole, and the sealing top plate is disassembled. By removing the U-shaped pin from the fixed groove, the tightening spring drives the fixed head to be separated from the fixed hole, so that the bottom back plate and the top back plate can be quickly removed. By rotating the ear to rotate the driving gear, the two fixed clamps inside the fixed box are separated from the clamping opening, realizing the separation of the top side plate and the bottom side plate from the fixed base. After disassembly, there is no obstruction around the assembly frame and the assembly plate, making it convenient and fast for the operator to overhaul. Align the fixing holes on the bottom side plate and the top side plate with the fixing head. Hold the pull ear and pull the fixing head from top to bottom, insert the U-shaped pin into the fixing groove, and use the tightening spring to apply a pulling force to the U-shaped pin. The bottom back plate and the top back plate are respectively and firmly connected to the bottom side plate and the top side plate. The sealing top plate and the top side plate are connected through the cooperation of the fixing strip and the connecting groove. Hold the pull rod and pull the lifting rod, release the pull rod, and the connecting spring rebounds, and the connecting head is embedded into the connecting hole to fix the sealing top plate. In summary, the ring main unit adopts a modular design, and all components can be quickly disassembled and assembled, reducing the time and cost required for installation and maintenance. The ring main unit adopts a tool-free quick connection technology, enabling the operator to complete the disassembly and assembly of the ring main unit without using additional tools.

[0016] 2. A fixed connection component is provided. The limiting bottom plate is provided with an assembly block and an assembly frame, which can be assembled according to requirements for the limiting bottom, conveniently and quickly. The limiting groove limits the movement of the locking roller. The fixed base is fixedly connected to the rotating base. During overhaul, the operator removes the limiting plug from the limiting top cylinder, and the operator rotates the rotating base to drive the assembly frame and the assembly plate to rotate, and cooperates with the locking roller to drive the assembly frame to move horizontally. The operator does not need to walk around the assembly frame for overhaul, making the overhaul more convenient and fast. After multiple ring main units are connected in series and fitted together, by tightening the locking rollers, the connecting pipe is fitted into the arc-shaped sleeves at the tops of two adjacent ring main units. With the connection and fixation of the series connection plates, the stable connection of multiple ring main units is achieved, which is convenient and fast. While the connecting pipe plays a connecting role, it also plays a role in heat dissipation. When the cooling fan starts, the air pressure inside the connecting pipe decreases, and the heat generated by the operation of the electrical components rises. The external cold air sequentially passes through the air inlet, ventilation holes, heat dissipation holes and communication ports and enters the connecting pipe. Under the guiding action of the cooling fan, the heat is quickly discharged, avoiding heat accumulation inside the ring main unit and ensuring the stable operation of the ring main unit.

[0017] In summary, after the bottom side plate and the top side plate in the quick disassembly and assembly component are installed, by rotating the rotating base in the fixed connection component, it is convenient for the operator to install the bottom back plate and the top back plate, without the operator walking around to assemble the ring main unit. And under the limiting and supporting action between the connecting strip and the connecting groove, with the fixation of the fixed clip on the bottom side plate and the top side plate, compared with the comparative document, all the electrical components of this ring main unit are installed on the assembly rack and the assembly plate, with a stable center of gravity, and the ring main unit will not tip over, protecting the personal safety of the on-site operators. Brief Description of the Drawings

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, and do not constitute a limitation to the present invention.

[0019] In the drawings: Figure 1 is the three-dimensional structure schematic diagram of the present invention; Figure 2 is the structure schematic diagram of the quick disassembly and assembly component of the present invention; Figure 3 is the installation structure schematic diagram of the bottom side plate of the present invention; Figure 4 is the installation structure schematic diagram of the fixed box of the present invention; Figure 5 is the installation structure schematic diagram of the fixed outer cylinder of the present invention; Figure 6 is the installation structure schematic diagram of the fixed clip of the present invention; Figure 7 is the installation structure schematic diagram of the sealing top plate of the present invention; Figure 8 is the installation structure schematic diagram of the fixed head of the present invention; Figure 9 is the structure schematic diagram of the fixed connection component of the present invention; Figure 10 is the installation structure schematic diagram of the rotating base of the present invention; Figure 11 is the installation structure schematic diagram of the limiting bottom cylinder of the present invention; Figure 12 It is a schematic installation structure diagram of the limit plug of the present invention; Figure 13 It is a schematic installation structure diagram of the arc-shaped sleeve of the present invention; Reference numerals in the figure: 1, fixed base; 2, quick disassembly and assembly component; 201, bottom side plate; 202, connecting bar; 203, top side plate; 204, connecting groove; 205, clamping port; 206, fixed box; 207, limit slide bar; 208, fixed clamp; 209, driving rack; 210, driving gear; 211, rotating ear; 212, return spring; 213, bottom back plate; 214, top back plate; 215, fixing hole; 216, fixing outer cylinder; 217, fixing head; 218, tightening spring; 219, fixing groove; 220, pulling ear; 221, U-shaped plug; 222, sealing top plate; 223, fixing bar; 224, connecting hole; 225, support slide bar; 226, lifting rod; 227, connecting head; 228, connecting spring; 229, pull rod; 230, limit plate; 231, limit rod; 232, assembly frame; 233, assembly plate; 234, instrument door; 3, fixed connection component; 301, limit bottom plate; 302, limit groove; 303, assembly frame; 304, assembly block; 305, locking roller; 306, connecting pin; 307, support bottom plate; 308, rotating base; 309, limit top cylinder; 310, limit bottom cylinder; 311, limit plug; 312, limit spring; 313, fixed ear; 314, guiding port; 315, fixing port; 316, air inlet; 317, ventilation hole; 318, heat dissipation hole; 319, arc-shaped sleeve; 320, dust-proof net; 321, connecting pipe; 322, communication port; 323, series plate; 324, heat dissipation fan. Specific embodiments

[0020] The following is a description of the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0021] Embodiment: As Figures 1-13As shown in the figure, the present invention provides a technical solution for a high-voltage ring main unit that can be quickly disassembled and assembled, including a fixed base 1. A quick disassembly and assembly component 2 is arranged on the top of the fixed base 1. The quick disassembly and assembly component 2 includes a bottom side plate 201, a connecting strip 202, a top side plate 203, a connecting groove 204, a clamping opening 205, a fixed box 206, a limiting slide bar 207, a fixed clamp 208, a driving rack 209, a driving gear 210, a rotating ear 211, a return spring 212, a bottom back plate 213, a top back plate 214, a fixing hole 215, a fixing outer cylinder 216, a fixing head 217, a tightening spring 218, a fixing groove 219, a pulling ear 220, a U-shaped bolt 221, a sealing top plate 222, a fixing strip 223, a connecting hole 224, a support slide bar 225, a lifting rod 226, a connecting head 227, a connecting spring 228, a pull rod 229, a limiting plate 230, a limiting rod 231, an assembly frame 232, an assembly plate 233 and an instrument door 234; Both sides of the top of the fixed base 1 are connected with bottom side plates 201. Connecting strips 202 are welded to the top and bottom of the bottom side plates 201. The top of the bottom side plates 201 is connected with top side plates 203. Connecting grooves 204 are opened at positions corresponding to the connecting strips 202 on both sides of the top of the fixed base 1. Connecting grooves 204 are also opened at the top and bottom of the top side plates 203. The connecting strips 202 are slidably inserted into the adjacent connecting grooves 204. The longitudinal cross-sectional shapes of the connecting strips 202 and the connecting grooves 204 are mutually fitting "T" shapes. Under the limiting and supporting action between the connecting strips 202 and the connecting grooves 204, the bottom side plates 201 can be stably fixed on the top of the fixed base 1, and the top side plates 203 can also be stably fixed on the top of the bottom side plates 201. The outer sides of the connecting strips 202 and the inner sides of the connecting grooves 204 are smooth surfaces, reducing the frictional resistance between the connecting strips 202 and the connecting grooves 204; Clamping openings 205 are opened at both ends of the top and bottom of the bottom side plates 201. Clamping openings 205 are also opened at both ends of the top of the fixed base 1 and both ends of the bottom of the top side plates 203. Fixed boxes 206 are movably inserted into the adjacent two clamping openings 205. A limiting slide bar 207 is installed at the inner bottom of the fixed box 206. Fixed clamps 208 are slidably connected to both ends of the limiting slide bar 207. The top of the fixed clamps 208 is connected with driving racks 209. A driving gear 210 is rotatably installed at the inner top of the fixed box 206 and between the adjacent two driving racks 209. The driving gear 210 meshes with the adjacent two driving racks 209. One end of the central axis of rotation of the driving gear 210 is connected with a rotating ear 211. A return spring 212 is connected between the adjacent two fixed clamps 208; A bottom back plate 213 is connected between two adjacent bottom side plates 201, and a top back plate 214 is connected between two adjacent top side plates 203. A number of fixing holes 215 are evenly formed on both sides of the bottom back plate 213 and the top back plate 214. At the position corresponding to each fixing hole 215 on one side inside the bottom side plate 201 and the top side plate 203, a fixing outer cylinder 216 is installed. A fixing head 217 is slidably connected inside the fixing outer cylinder 216. A tightening spring 218 is connected between one end inside the fixing outer cylinder 216 and one end inside the fixing head 217. Fixing grooves 219 are formed on both sides of the fixing head 217. A pulling ear 220 is connected to the top end of the fixing head 217. The pulling ear 220 penetrates inside the adjacent fixing hole 215. U-shaped pins 221 are connected to both outer sides of the bottom back plate 213 and the top back plate 214. The U-shaped pins 221 are movably embedded inside the adjacent fixing grooves 219. When the U-shaped pins 221 are inserted into the fixing grooves 219 on both sides of the fixing head 217, the tightening spring 218 is in a tightened state at this time. The tightening spring 218 applies a pulling force to the U-shaped pins 221. Under the pulling force of the tightening spring 218, the bottom back plate 213 and the top back plate 214 can be firmly connected to the bottom side plate 201 and the top side plate 203 respectively. When the U-shaped pins 221 are removed from the fixing grooves 219, the tightening spring 218 can drive the fixing head 217 to disengage from the fixing holes 215. At this time, the bottom back plate 213 and the top back plate 214 can be removed; A sealing top plate 222 is connected to the middle of the tops of two adjacent top side plates 203. Fixed bars 223 are welded to both sides of the bottom of the sealing top plate 222. The fixed bars 223 are movably embedded inside the adjacent connection grooves 204. The fixed bars 223 have the same specifications as the connection bars 202. The sealing top plate 222 and the top side plates 203 are connected through the cooperation of the fixed bars 223 and the connection grooves 204, which facilitates the installation and disassembly of the sealing top plate 222. Two connection holes 224 are provided on one side of the top of the sealing top plate 222. Support slide bars 225 are installed on both sides of the top of the outer side of the top back plate 214. A lifting rod 226 is slidably connected to the outer sides of two adjacent support slide bars 225. Connection heads 227 are welded to both ends of the top of the lifting rod 226. The connection heads 227 penetrate inside the adjacent connection holes 224. A connection spring 228 is connected between the bottom of the lifting rod 226 and the bottom of the support slide bars 225. A pull rod 229 is rotatably connected to the middle of the bottom of the lifting rod 226. A limiting plate 230 is welded to the bottom end of the pull rod 229. A limiting rod 231 is welded to the middle of the outer side of the top back plate 214. The connection heads 227 can fix the sealing top plate 222. When disassembling the sealing top plate 222, hold the pull rod 229 and pull the lifting rod 226. The lifting rod 226 descends along the support slide bars 225, and the connection spring 228 is compressed. Then rotate the pull rod 229 to move the limiting plate 230 to the bottom of the limiting rod 231. Release the pull rod 229, and the connection spring 228 rebounds. The limiting plate 230 is blocked by the limiting rod 231. At this time, the connection heads 227 are disengaged from the connection holes 224, and the sealing top plate 222 can be disassembled. When installing the sealing top plate 222, rotate the pull rod 229 to disengage the limiting plate 230 from the limiting rod 231. The connection spring 228 rebounds, and the connection heads 227 can be embedded inside the connection holes 224 to fix the sealing top plate 222; An assembly frame 232 is installed in the middle of the sealing top plate 222 on the top of the fixed base 1. An assembly plate 233 is fixed to the top of the assembly frame 232 by bolts. Various electrical components are installed on the assembly frame 232 and the assembly plate 233. When overhauling the electrical components, remove the bottom side plates 201, top side plates 203, bottom back plates 213, top back plates 214 and the sealing top plate 222. There is no obstruction around the electrical components installed on the assembly frame 232 and the assembly plate 233, and the overhaul is convenient and fast. The assembly plate 233 is located at the connection position between the bottom side plate 201 and the top side plate 203. Instrument doors 234 are hinged to one side of one bottom side plate 201 and one side of the top side plate 203; Both the bottom and the top of the fixed base 1 are provided with fixed connection components 3. The fixed connection components 3 include a limit bottom plate 301, a limit groove 302, an assembly frame 303, an assembly block 304, a locking roller 305, a connection pin 306, a support bottom plate 307, a rotating base 308, a limit top cylinder 309, a limit bottom cylinder 310, a limit plug 311, a limit spring 312, a fixed ear 313, a guiding port 314, a fixed port 315, an air inlet 316, a ventilation hole 317, a heat dissipation hole 318, an arc-shaped sleeve 319, a dust-proof net 320, a connecting pipe 321, a communication port 322, a series connection plate 323, and a heat dissipation fan 324; The limit bottom plate 301 is installed at the bottom of the fixed base 1. Limit grooves 302 are opened on both sides of the top of the limit bottom plate 301. The support bottom plate 307 is installed on the top of the limit bottom plate 301. Locking rollers 305 are installed at the four corners of the bottom of the support bottom plate 307. The locking rollers 305 are embedded inside the adjacent limit grooves 302. An assembly frame 303 is welded to one end of the fixed base 1. An assembly block 304 is welded to the other end of the fixed base 1. The assembly block 304 is embedded inside the adjacent assembly frame 303 and connected by a connection pin 306. When installing multiple limit bottom plates 301, the assembly block 304 is inserted into the assembly frame 303, and the limit bottom plates 301 can be sequentially connected and fixed by using the connection pin 306, which is convenient for disassembly and installation. The rotating base 308 is rotatably installed on the top of the support bottom plate 307. The rotating base 308 is connected to the bottom of the fixed base 1 by bolts; An air inlet 316 is installed on one side of the fixed base 1. A number of ventilation holes 317 are evenly opened on the top of the assembly plate 233. Heat dissipation holes 318 are opened on both sides of the top of the sealing top plate 222. An arc-shaped sleeve 319 is connected to the top of the sealing top plate 222 corresponding to the position of the heat dissipation hole 318. A dust-proof net 320 is movably embedded at the top of the heat dissipation hole 318 at the bottom of the arc-shaped sleeve 319. A connecting pipe 321 is movably embedded inside two adjacent arc-shaped sleeves 319 on the tops of two different sealing top plates 222. A series connection plate 323 is welded between two adjacent connecting pipes 321. A communication port 322 is opened at the bottom of the connecting pipe 321. A heat dissipation fan 324 is installed at one end of the connecting pipe 321. The input end of the heat dissipation fan 324 is electrically connected to the output end of an external power supply. The heat generated by the operation of the electrical components rises, passes through the ventilation holes 317, the heat dissipation holes 318, and the communication port 322 and enters the connecting pipe 321. Under the guiding action of the heat dissipation fan 324, the heat is quickly discharged, preventing the heat from accumulating inside the ring main unit. The dust-proof net 320 can isolate external dust; On both sides of the bottom of the rotating base 308, limiting top cylinders 309 are installed. On both sides of the top of the support base plate 307, limiting bottom cylinders 310 are installed. A limiting plug 311 is slidably connected inside the limiting bottom cylinder 310. A limiting spring 312 is connected between one end inside the limiting plug 311 and one end inside the limiting bottom cylinder 310. A fixing ear 313 is welded to one side of the outside of the limiting plug 311. The limiting plug 311 is embedded inside the adjacent limiting top cylinder 309. A guiding opening 314 is formed on one side of the limiting bottom cylinder 310, and a fixing opening 315 is formed at the bottom of the guiding opening 314. When the limiting plug 311 is inserted into the limiting top cylinder 309, the rotating base 308 can be limited, so that the rotating base 308 cannot rotate. The operator pulls the fixing ear 313 to descend along the guiding opening 314, and the limiting spring 312 is compressed. The fixing ear 313 is rotated into the fixing opening 315. The fixing opening 315 limits the fixing ear 313, so that the limiting plug 311 cannot rebound. At this time, the limiting plug 311 is separated from the limiting top cylinder 309, and the rotating base 308 can rotate. When overhauling the electrical components inside the ring main unit, rotating the rotating base 308 can drive the mounting frame 232 and the mounting plate 233 to rotate, making the overhaul more convenient.

[0022] The working principle and usage process of the present invention: During assembly, according to the number of single ring main units to be installed, the corresponding number of limiting base plates 301 are installed. When multiple limiting base plates 301 are installed, the assembly blocks 304 are inserted into the assembly frames 303, and the limiting base plates 301 are sequentially connected and fixed by using the connecting pins 306. After the connection and fixation, the rotating base 308 is pushed, and the locking rollers 305 are moved into the limiting grooves 302. The movement of the locking rollers 305 is limited by the limiting grooves 302. The fixed base 1 and the rotating base 308 are fixedly connected by using bolts. At this time, the fixing ear 313 is located inside the fixing opening 315. The mounting frame 232 and the mounting plate 233 are installed inside the fixed base 1, and the corresponding electrical components are installed on the mounting frame 232 and the mounting plate 233. Next, insert the connecting strip 202 at the bottom of the bottom side plate 201 into the connecting groove 204 on the rotating base 308. After the bottom side plate 201 is inserted, place the fixing box 206 inside the clamping opening 205 between the bottom side plate 201 and the fixing base 1. An operator holds the rotating ear 211 and rotates the driving gear 210. The driving gear 210 drives the driving rack 209 to move, and the two fixing clips 208 inside the fixing box 206 approach each other along the limit slide bar 207. When the fixing clip 208 moves to the joint between the bottom side plate 201 and the fixing base 1, release the rotating ear 211, and the return spring 212 rebounds. Under the clamping of the fixing clip 208, the bottom side plate 201 and the fixing base 1 are connected and fixed. Subsequently, utilize the cooperation of the connecting strip 202 and the connecting groove 204 to connect the top side plate 203 with the bottom side plate 201. Then place the fixing box 206 inside the clamping opening 205 and repeat the above operation to fixedly connect the bottom side plate 201 and the top side plate 203; The longitudinal cross-sectional shapes of the connecting strip 202 and the connecting groove 204 are "T"-shaped that fit each other. Under the limiting and supporting action between the connecting strip 202 and the connecting groove 204, the bottom side plate 201 can be stably fixed on the top of the fixing base 1, and the top side plate 203 can also be stably fixed on the top of the bottom side plate 201. When installing the bottom side plate 201 and the top side plate 203, the bottom side plate 201 and the top side plate 203 will not tip over, and the installation is stable and convenient; After the installation of the bottom side plate 201 and the top side plate 203 is completed, by rotating the rotating base 308, make the pulling ear 220 face the operator, which is convenient for the operator to install the bottom back plate 213 and the top back plate 214. It is convenient and fast. Align the fixing holes 215 on the bottom side plate 201 and the top side plate 203 with the fixing heads 217, hold the pulling ear 220 and pull the fixing head 217 from top to bottom. The tightening spring 218 elongates, and insert the U-shaped pin 221 into the fixing groove 219. After the U-shaped pin 221 is inserted into the corresponding fixing groove 219, release the pulling ear 220, and the tightening spring 218 rebounds. The tightening spring 218 applies a pulling force to the U-shaped pin 221. Under the pulling force of the tightening spring 218, the bottom back plate 213 and the top back plate 214 are respectively firmly connected to the bottom side plate 201 and the top side plate 203, without the operator walking around to assemble the ring main unit. After the installation of the bottom back plate 213 and the top back plate 214 is completed; Next, the sealing top plate 222 is connected to the top side plate 203 through the cooperation of the fixing strip 223 and the connecting groove 204, the hand-held pull rod 229 pulls the lifting rod 226, the connecting spring 228 is compressed, and then the pull rod 229 is released, the connecting spring 228 rebounds, and the connecting head 227 is embedded in the connecting hole 224 to fix the sealing top plate 222, and the installation of a single ring network cabinet is completed. After the installation is completed, the rotating base 308 is rotated to make the instrument door 234 face the operator, and the operator moves the fixing ear 313 to disengage the fixing port 315, the limiting spring 312 rebounds, and the limiting plug 311 rises along the limiting bottom cylinder 310. The limiting plug 311 is inserted into the corresponding limiting top cylinder 309 to fix the rotating base 308 to prevent the ring network cabinet from rotating during use. During the assembly process of the entire single ring network cabinet, the operator can complete the assembly without using additional tools, which is convenient and quick. Repeat the above steps to complete the assembly of multiple ring network cabinets. After the assembly of multiple ring network cabinets is completed, the support bottom plate 307 is pushed to move along the limit groove 302 to make the multiple ring network cabinets fit in series. After the multiple ring network cabinets are fitted in series, the locking roller 305 is locked, and then the connecting pipe 321 is embedded in the arc sleeve 319 on the top of the two adjacent ring network cabinets, and the connection and fixation of the series connection plate 323 are used to achieve a stable connection of multiple ring network cabinets, which is convenient and fast. The connecting pipe 321 plays a connecting role and also a heat dissipation role. The heat dissipation fan 324 is started, the air pressure inside the connecting pipe 321 is reduced, and the heat generated by the operation of the electrical components increases. The external cold air passes through the air inlet 316, the vent 317, the heat dissipation hole 318 and the connecting port 322 in turn to enter the connecting pipe 321. Under the guidance of the heat dissipation fan 324, the heat is quickly discharged to avoid heat accumulation inside the ring network cabinet, thereby ensuring the stable operation of the ring network cabinet. When performing maintenance on electrical components, the operator separates multiple ring main units. First, the operator disassembles the sealed top plate 222. During disassembly, hold the pull rod 229 and pull the lifting rod 226. The lifting rod 226 descends along the support slide rod 225, the connecting spring 228 is compressed, and rotate the pull rod 229 to move the limit plate 230 to the bottom of the limit rod 231. Release the pull rod 229, the connecting spring 228 rebounds, and the limit plate 230 is blocked by the limit rod 231. At this time, the connecting head 227 is disengaged from the connecting hole 224, and the sealed top plate 222 is disassembled. After the sealed top plate 222 is disassembled, remove the U-shaped pin 221 from the inside of the fixed slot 219, and the tightening spring 218 drives the fixed head 217 to disengage from the fixed hole 215. At this time, the bottom back plate 213 and the top back plate 214 can be quickly removed. Then, the operator holds the rotating ear 211 and rotates the driving gear 210, and the two fixed clips 208 inside the fixed box 206 are disengaged from the clamping port 205. The operator takes out the fixed box 206 between the fixed base 1 and the bottom side plate 201. Then, pull out the top side plate 203 and the bottom side plate 201 to separate them from the fixed base 1. At this time, there is no obstruction around the assembly frame 232 and the assembly plate 233, which is convenient and fast for the operator to perform maintenance. During maintenance, the operator removes the limit plug 311 from the inside of the limit top cylinder 309, and the operator rotates the rotating base 308 to drive the assembly frame 232 and the assembly plate 233 to rotate. The operator does not need to walk around the assembly frame 232 for maintenance, making the maintenance more convenient and fast; The ring main unit adopts a modular design, and all components can be quickly disassembled and assembled, reducing the time and cost required for installation and maintenance. The ring main unit adopts a tool-free quick connection technology, enabling the operator to complete the disassembly and assembly of the ring main unit without using additional tools. In addition, under the limit support between the connecting strip 202 and the connecting groove 204, and in cooperation with the fixing of the bottom side plate 201 and the top side plate 203 by the fixed clip 208, heavier electrical components are all installed on the assembly frame 232 and the assembly plate 233. The structure of the assembly frame 232 is evenly distributed. When the ring main unit is disassembled, the center of gravity of the overall ring main unit changes little. Compared with the existing ring main unit, the center of gravity is stable, and the bottom side plate 201 and the top side plate 203 will not tip over, protecting the personal safety of on-site operators.

[0023] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-voltage ring main unit that can be quickly disassembled and assembled, comprising a fixed base (1), characterized in that: A quick disassembly assembly (2) is arranged on the top of the fixed base (1), and the quick disassembly assembly (2) comprises a bottom side plate (201); Both sides of the top of the fixed base (1) are connected to bottom side plates (201), the top and bottom of the bottom side plates (201) are welded with connecting strips (202), the top of the bottom side plates (201) is connected to the top side plates (203), connecting grooves (204) are provided at positions corresponding to the connecting strips (202) on both sides of the top of the fixed base (1), and the top and bottom of the top side plates (203) are also provided with connecting grooves (204), and the connecting strips (202) are slidably embedded in adjacent connecting grooves (204); The bottom side plate (201) has clamping openings (205) at both ends of the top and at both ends of the bottom, and the fixed base (1) has clamping openings (205) at both ends of the top and at both ends of the bottom of the top side plate (203); A fixing box (206) is movably embedded inside two adjacent clamping openings (205), a limiting slide bar (207) is installed at the inner bottom of the fixing box (206), and both ends of the limiting slide bar (207) are slidably connected to fixing clamps (208).

2. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 1 is characterized in that: The top of the fixing clamp (208) is connected to a driving rack (209), and a driving gear (210) is rotatably installed at the top of the inner side of the fixing box (206) and located between two adjacent driving racks (209). The driving gear (210) is meshed with the two adjacent driving racks (209), and one end of the rotation center axis of the driving gear (210) is connected to a rotating ear (211), and a return spring (212) is connected between two adjacent fixing clamps (208).

3. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 1 is characterized in that: The longitudinal cross-sections of the connection strip (202) and the connection groove (204) are in a "T" shape that fits in with each other, and the outer side of the connection strip (202) and the inner side of the connection groove (204) are both smooth surfaces; A bottom back plate (213) is connected between two adjacent bottom side plates (201), and a top back plate (214) is connected between two adjacent top side plates (203). A plurality of fixing holes (215) are evenly provided on both sides of the bottom back plate (213) and the top back plate (214).

4. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 3 is characterized in that: A fixed outer cylinder (216) is installed at a position corresponding to each fixing hole (215) on one side of the inner side of the bottom side plate (201) and the top side plate (203); a fixing head (217) is slidably connected to the inner side of the fixed outer cylinder (216); a tightening spring (218) is connected between one end of the inner side of the fixed outer cylinder (216) and one end of the inner side of the fixing head (217); fixing grooves (219) are provided on both sides of the fixing head (217); a pull ear (220) is connected to the top end of the fixing head (217); and the pull ear (220) passes through the inner side of the adjacent fixing hole (215); Both sides of the bottom back plate (213) and the top back plate (214) are connected to U-shaped latches (221), and the U-shaped latches (221) are movably embedded in adjacent fixing grooves (219).

5. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 1 is characterized in that: A sealing top plate (222) is connected in the middle of the tops of two adjacent top side plates (203), and fixing strips (223) are welded to both sides of the bottom of the sealing top plate (222), and the fixing strips (223) are movably embedded in the adjacent connection grooves (204).

6. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 5 is characterized in that: Two connection holes (224) are provided on one side of the top of the sealing top plate (222), support slide bars (225) are installed on both sides of the outer top of the top back plate (214), and lifting rods (226) are slidably connected to the outer sides of two adjacent support slide bars (225), and connectors (227) are welded at both ends of the top of the lifting rods (226), and the connectors (227) pass through the inside of the adjacent connection holes (224); A connecting spring (228) is connected between the bottom of the lifting rod (226) and the bottom of the supporting slide rod (225); a pull rod (229) is rotatably connected in the middle of the bottom of the lifting rod (226); a limiting plate (230) is welded to the bottom end of the pull rod (229); and a limiting rod (231) is welded in the middle of the outer side of the top back plate (214).

7. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 5 is characterized in that: An assembly frame (232) is installed on the top of the fixed base (1) in the middle of the sealing top plate (222), and an assembly plate (233) is fixed to the top of the assembly frame (232) by bolts. The assembly plate (233) is located at the connection position between the bottom side plate (201) and the top side plate (203), and an instrument door (234) is hinged on one side of the bottom side plate (201) and the top side plate (203).

8. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 7 is characterized in that: The bottom and top of the fixed base (1) are both provided with fixed connection components (3), and the fixed connection components (3) include a limiting bottom plate (301); A limiting base plate (301) is installed at the bottom of the fixed base (1), limiting grooves (302) are provided on both sides of the top of the limiting base plate (301), a supporting base plate (307) is installed on the top of the limiting base plate (301), locking rollers (305) are installed at the four corners of the bottom of the supporting base plate (307), and the locking rollers (305) are embedded in adjacent limiting grooves (302), and a rotating base (308) is rotatably installed on the top of the supporting base plate (307), and the rotating base (308) is connected to the bottom of the fixed base (1) by bolts; An assembly frame (303) is welded to one end of the fixed base (1), and an assembly block (304) is welded to the other end of the fixed base (1); the assembly block (304) is embedded in an adjacent assembly frame (303) and connected via a connecting pin (306).

9. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 8 is characterized in that: Limiting top cylinders (309) are installed on both sides of the bottom of the rotating base (308), and limiting bottom cylinders (310) are installed on both sides of the top of the supporting bottom plate (307). A limiting plug (311) is slidably connected inside the limiting bottom cylinder (310), and a limiting spring (312) is connected between one end inside the limiting plug (311) and one end inside the limiting bottom cylinder (310). A fixing ear (313) is welded on one side of the outside of the limiting plug (311), and the limiting plug (311) is embedded in the adjacent limiting top cylinder (309). A guide opening (314) is provided on one side of the limiting bottom cylinder (310), and a fixing opening (315) is provided at the bottom of the guide opening (314).

10. The high-voltage ring main unit that can be quickly disassembled and assembled according to claim 8, characterized in that: An air inlet (316) is installed on one side of the fixed base (1), a plurality of ventilation holes (317) are evenly opened on the top of the assembly plate (233), heat dissipation holes (318) are opened on both sides of the top of the sealing top plate (222), an arc-shaped sleeve (319) is connected to the top of the sealing top plate (222) at the position corresponding to the heat dissipation hole (318), and a dustproof net (320) is movably embedded at the bottom of the arc-shaped sleeve (319) located at the top of the heat dissipation hole (318); A connecting tube (321) is movably embedded in two adjacent arc-shaped sleeves (319) located at the top of two different sealing top plates (222), a series plate (323) is welded between the two adjacent connecting tubes (321), a connecting port (322) is provided at the bottom of the connecting tube (321), a heat dissipation fan (324) is installed at one end of the connecting tube (321), and an input end of the heat dissipation fan (324) is electrically connected to an output end of an external power supply.

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