Lightning protection power transmission and distribution equipment

Abstract

The present invention relates to the field of transformers, and specifically discloses a lightning protection power transmission and distribution equipment, including a transformer housing and a transformer body arranged inside the transformer housing, wherein the inside of the transformer housing is provided with an oil pressure flushing assembly for cleaning the inner cavity side wall of the transformer housing and the side wall of the transformer body. The lightning protection power transmission and distribution equipment can not only clean the inner cavity side wall of the transformer housing, but also clean the outer wall of the transformer body through the oil pressure flushing assembly arranged inside the transformer housing. Due to the shape adaptation and flushing through its own transformer oil, not only the cleaning effect is good, but also the insulation material on the inner wall of the transformer housing and the transformer body will not be damaged, and it can be achieved without disassembly, thereby improving efficiency.

Description

Technical Field

[0001] The invention relates to the field of transformers, and in particular to a lightning protection power transmission and distribution device. Background Art

[0002] In high-altitude cold regions, power transmission and distribution equipment, especially transformers, face many challenges, among which the short life of transformer oil and the need for regular replacement and cleaning are particularly prominent. The climatic conditions in these areas are extreme, including long-term low temperatures, strong winds, and possible ice and snow coverage. In particular, low temperatures have a significant impact on the performance of transformers and the transformer oil inside them.

[0003] At present, various impurity particles will be generated in transformer oil that has been used for a long time. These impurity particles include but are not limited to metal particles, oxidation products, etc. At the same time, due to the increase in viscosity of low-temperature transformer oil, the fluidity will deteriorate, and deposition will easily occur. In the prior art, oil replacement and cleaning requires first disassembling the transformer, then draining the transformer oil, cleaning the inner wall, and finally replacing the oil. Due to the large size and complex structure of the transformer, this is not only time-consuming and labor-intensive, but may also cause secondary damage to the transformer. Moreover, the disassembly and cleaning work not only increases the investment in manpower and material resources, but may also lead to prolonged transformer downtime, affecting the reliability and stability of power supply. In addition, during the disassembly and cleaning process, if the operation is improper or the protective measures are not in place, safety accidents such as fire and electric shock may be caused. Therefore, the replacement and cleaning of the transformer oil inside the transformer in the prior art is very inconvenient.

[0004] Therefore, it is necessary to propose a lightning protection power transmission and distribution equipment to solve the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a lightning protection power transmission and distribution equipment, which can effectively solve the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A lightning protection power transmission and distribution equipment, comprising a transformer housing and a transformer body arranged inside the transformer housing, wherein the inside of the transformer housing is provided with an oil pressure flushing assembly for cleaning the inner cavity side wall of the transformer housing and the side wall of the transformer body, wherein the oil pressure flushing assembly comprises a cleaning plate movably connected to the inside of the transformer housing along the height direction of the transformer housing, wherein the middle of the cleaning plate is provided with a profiling opening adapted to the transformer body, wherein the cleaning plate is movably arranged on the outside of the transformer body through the profiling opening, wherein nozzles are arranged on the inner periphery of the profiling opening and around the cleaning plate, wherein a square channel connected to the nozzle is arranged on the inner periphery of the cleaning plate, wherein the transformer housing The four corners of the lower end of the inner cavity are symmetrically fixed with second fixed blocks, a piston cylinder is vertically fixed on the second fixed block, a hollow piston rod is movably connected to the inner side of the upper end of the piston cylinder, and the upper ends of the four piston rods are respectively connected to the four corners of the bottom of the cleaning plate, and the four piston rods correspond to and are connected to the four corners of the square channel respectively, a first one-way valve is provided at the upper end of the piston rod, a connecting pipe is connected to the side of the lower end of the piston cylinder, an oil suction port is provided at the end of the connecting pipe away from the piston cylinder, a second one-way valve is provided on the connecting pipe, the oil suction port is fan-shaped, and the oil suction port is used to suck transformer oil in the transformer housing, and a filter is provided at the end of the oil suction port away from the piston cylinder;

[0008] The piston cylinder is provided with an anti-blocking component, which includes a rotating shaft rotatably connected to the bottom of the inner side of the piston cylinder, a spiral guide groove is provided on the outer side of the rotating shaft, a driving cylinder is fixedly provided on the inner middle part of the inner side of the piston rod, and a gap is provided between the driving cylinder and the inner wall of the piston rod, the upper end of the rotating shaft is movably connected to the inner side of the driving cylinder, and a hemispherical driving block that cooperates with the sliding guide of the spiral guide groove is fixedly provided on the inner wall of the lower end of the driving cylinder, the bottom of the rotating shaft extends to the bottom of the piston cylinder and is provided with a brush strip for cleaning the filter screen.

[0009] Preferably, the first one-way valve is configured so that the oil in the piston rod can only flow into the square channel;

[0010] The second one-way valve is configured so that the oil in the transformer housing can only flow from the connecting pipe to the piston cylinder.

[0011] Preferably, the nozzle is arranged to be tilted downward;

[0012] There is a gap between the periphery of the cleaning plate and the inner wall of the transformer housing;

[0013] There is a gap between the inner wall of the profiling opening and the outer wall of the transformer body.

[0014] Preferably, it also includes a driving assembly for driving the cleaning plate to lift and lower, the driving assembly includes a bidirectional screw rotatably connected to the lower end of the inner side of the transformer housing, two ends of the bidirectional screw are symmetrically threadedly connected with a traction plate, and the side surfaces of the transformer housing inner cavity and the traction plate end corresponding to the end are provided with a "concave" shaped guide frame, the lower end of the guide frame is provided with a first transverse guide groove arranged parallel to the bidirectional screw, and the two ends of the guide frame are symmetrically provided with a vertical guide groove in a vertical shape. The two ends of the traction plate are symmetrically fixed with a connecting shaft, and the end of the connecting shaft away from the traction plate is fixedly provided with a sliding block that cooperates with the first transverse guide groove for sliding guidance, the two ends of the cleaning plate and the corresponding side of the guide frame are symmetrically rotatably connected with the first guide shaft, and the end of the first guide shaft away from the cleaning plate extends to the inner side of the vertical guide groove and movably cooperates with the vertical guide groove, the first guide shaft is rotatably arranged on the linkage rod, and the lower end of the linkage rod is rotatably arranged on the connecting shaft, and one side of the lower end of the transformer housing is provided with a motor for driving the bidirectional screw to rotate.

[0015] Preferably, the driving assembly is linked with a cleaning assembly located at the lower end of the inner cavity of the transformer housing, the cleaning assembly includes a push plate that is longitudinally penetrated and movably connected to the traction plate, first fixed blocks are symmetrically arranged at both ends of the top of the push plate, an anti-rotation groove is arranged at one end of the first fixed block away from the push plate, an anti-rotation rod is movably connected to the anti-rotation groove, a second guide shaft is rotatably arranged at one end of the anti-rotation rod away from the first fixed block, a spring is arranged between the anti-rotation rod and the inner wall of the anti-rotation groove, a guide plate is arranged on the side of the guide frame close to the inner wall of the transformer housing, and a spring is arranged on the side of the guide plate away from the inner wall of the transformer housing The guide groove corresponding to the second guide shaft comprises a second transverse guide groove arranged on the side of the guide plate away from the inner wall of the transformer housing, each second guide shaft corresponds to two second transverse guide grooves, and the two second transverse guide grooves are arranged in parallel, an oblique guide groove is arranged at the end of the second transverse guide groove, and the oblique guide grooves at the ends of the two second transverse guide grooves are connected, so that the second transverse guide groove and the oblique guide groove form a closed loop connection, two of the diagonally arranged oblique guide grooves on the two second transverse guide grooves are provided with steps, and the other two diagonally arranged oblique guide grooves are provided with slopes corresponding to the steps, and the second guide shaft cooperates with the second transverse guide groove and the oblique guide groove movable guide.

[0016] Preferably, the cross-sections of the anti-rotation rod and the anti-rotation groove are both regular polygons.

[0017] Preferably, a avoidance groove corresponding to the bidirectional screw is provided in the middle of the upper end of the push plate.

[0018] Preferably, a heat-conducting substrate is provided on the bottom wall of the inner cavity of the transformer housing, and a heating wire is arranged on the inner side of the heat-conducting substrate.

[0019] Preferably, an oil drain groove is provided in the middle of the top of the heat-conducting substrate, and the oil drain groove is inclined and corresponds to the middle of the bidirectional screw. A discharge port corresponding to the lower end of the oil drain groove is provided on one side of the lower end of the transformer housing, and a valve is provided on the discharge port.

[0020] Preferably, a lightning arrester is provided on the top of the transformer housing, and one end of the lightning arrester is electrically connected to the high voltage side of the transformer housing, and the other end is grounded.

[0021] Compared with the prior art, the present invention provides a lightning protection power transmission and distribution equipment, which has the following beneficial effects:

[0022] 1. The lightning protection power transmission and distribution equipment can not only clean the inner cavity side wall of the transformer shell, but also clean the outer wall of the transformer body through the oil pressure flushing component arranged inside the transformer shell. Due to the shape adaptation and flushing with its own transformer oil, not only the cleaning effect is good, but also no damage is caused to the inner wall of the transformer shell and the insulating material on the transformer body. It can be achieved without disassembly, which improves efficiency and increases convenience. Moreover, flushing after filtering avoids impurities returning to the inner wall of the transformer shell and the outer wall of the transformer body. The setting of the anti-blocking component can realize the cleaning of the filter screen while cleaning the inner wall, avoiding blockage affecting the entry of oil. The structure is compact, and the longitudinal displacement of the oil pressure flushing component is facilitated by the arranged driving mechanism, thereby facilitating the cleaning of the inner wall.

[0023] 2. The lightning protection power transmission and distribution equipment has a cleaning component and a driving mechanism that are linked together, which can push the bottom sediment while cleaning the upper end, making it easy to discharge. The cleaning component rises when resetting to avoid the pushback of impurities. It has a compact structure and is easy to use.

[0024] 3. The lightning protection power transmission and distribution equipment can heat the inside of the transformer shell in high-cold areas through the setting of the thermal conductive substrate and the heating wire. By heating the transformer oil at an appropriate temperature, the fluidity of the oil can be significantly improved, the viscosity can be reduced, and the smooth circulation of the oil can be ensured. The insulation performance is effectively enhanced, and local discharge and arc generation can be prevented. At the same time, the deposition of impurities and moisture in the oil is reduced, and the aging and pollution of the oil are delayed. The reliability and safety of the transformer are comprehensively improved, and the stable operation of the equipment in a low-temperature environment is ensured. The hot oil circulation efficiency is improved, and the requirements for the installation, insulation drying treatment and test grid connection of large-capacity main transformers are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention.

[0026] Figure 2 It is a structural schematic diagram of the present invention from another perspective.

[0027] Figure 3 It is a schematic structural diagram of the transformer housing and the heat-conducting substrate of the present invention in a disassembled state.

[0028] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the transformer housing of the present invention.

[0029] Figure 5 It is a schematic structural diagram of the transformer housing and the transformer body of the present invention in a disassembled state.

[0030] Figure 6 It is a schematic structural diagram of the transformer body and the cleaning plate of the present invention in a disassembled state.

[0031] Figure 7 It is a schematic diagram of the overall structure of the oil pressure flushing component, the driving component and the debris cleaning component of the present invention.

[0032] Figure 8 The present invention Figure 7 Schematic diagram of the structure when the foundation is disassembled.

[0033] Fig. 9 It is a structural schematic diagram of the guide frame, linkage rod and traction plate of the present invention in a coordinated state.

[0034] Fig.10 It is a schematic structural diagram of the push plate, the traction plate and the second guide shaft of the present invention in a disassembled state.

[0035] Fig.11 It is a schematic diagram of the overall structure of the piston cylinder and the piston rod of the present invention.

[0036] Fig.12 It is a structural schematic diagram of the lower end of the piston cylinder of the present invention.

[0037] Fig.13 It is a schematic diagram of the top cross-sectional structure of the cleaning plate of the present invention.

[0038] Fig.14 It is a structural schematic diagram of the guide groove of the present invention.

[0039] Fig.15 It is a schematic diagram of the cross-sectional structure of the piston cylinder and the piston rod of the present invention.

[0040] Fig.16 The present invention Fig.15 Enlarged view of point A in the middle.

[0041] Fig.17 It is a schematic diagram of the top cross-sectional structure of the thermal conductive substrate of the present invention.

[0042] In the figure: 1, transformer housing; 2, lightning arrester; 3, motor; 4, outlet; 5, valve; 6, heat-conducting substrate; 7, push plate; 8, bidirectional screw; 9, transformer body; 10, guide plate; 11, guide frame; 12, linkage rod; 13, cleaning plate; 14, piston cylinder; 15, piston rod; 16, vertical guide groove; 17, first transverse guide groove; 18, first guide shaft; 19, traction plate; 20, slider; 21, connecting shaft; 22, first fixed block; 23, second guide shaft; 24, anti-rotation Rod; 25, spring; 26, anti-rotation groove; 27, avoidance groove; 28, first one-way valve; 29, second fixed block; 30, oil suction port; 31, filter screen; 32, connecting pipe; 33, second one-way valve; 34, contoured port; 35, nozzle; 36, square channel; 37, second transverse guide groove; 38, inclined guide groove; 39, step; 40, slope; 41, rotating shaft; 42, driving cylinder; 43, spiral guide groove; 44, driving block; 45, heating wire; 46, oil drain groove; 47, brush strip. DETAILED DESCRIPTION

[0043] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0044] like Figure 1-Figure 8 , Figure 11-13 , Figure 15-16As shown, a lightning protection power transmission and distribution equipment includes a transformer housing 1 and a transformer body 9 arranged on the inner side of the transformer housing 1. The inner side of the transformer housing 1 is provided with an oil pressure flushing component for cleaning the inner cavity side wall of the transformer housing 1 and the side wall of the transformer body 9. The oil pressure flushing component includes a cleaning plate 13 movably connected to the inner side of the transformer housing 1 along the height direction of the transformer housing 1. The middle part of the cleaning plate 13 is provided with a profiling port 34 adapted to the transformer body 9. The cleaning plate 13 is movably arranged on the outer side of the transformer body 9 through the profiling port 34. The inner periphery of the profiling port 34 and the surroundings of the cleaning plate 13 are provided with nozzles 35. The nozzles 35 are arranged tilted downward to provide a flushing effect. There is a gap between the surroundings of the cleaning plate 13 and the inner wall of the transformer housing 1, and there is a gap between the inner wall of the profiling port 34 and the outer wall of the transformer body 9 to avoid contact with the inner wall of the transformer housing 1 and the outer wall of the transformer body 9 to cause damage. The inner periphery of the cleaning plate 13 is provided with a square channel connected to the nozzle 35. 36, the four corners of the lower end of the inner cavity of the transformer housing 1 are symmetrically fixed with second fixing blocks 29, and a piston cylinder 14 is vertically fixed on the second fixing block 29. The inner side of the upper end of the piston cylinder 14 is movably connected with a hollow piston rod 15, and the upper ends of the four piston rods 15 are respectively connected to the four corners of the bottom of the cleaning plate 13, and the four piston rods 15 are respectively corresponding to and connected with the four corners of the square channel 36, and the upper end of the piston rod 15 is provided with a first one-way valve 28, and the first one-way valve 28 is configured to be oil in the piston rod 15. The liquid can only flow into the square channel 36. The lower end side of the piston cylinder 14 is connected with a connecting pipe 32. The end of the connecting pipe 32 away from the piston cylinder 14 is provided with an oil suction port 30. The connecting pipe 32 is provided with a second one-way valve 33. The second one-way valve 33 is configured so that the oil in the transformer housing 1 can only flow from the connecting pipe 32 to the piston cylinder 14. The oil suction port 30 is fan-shaped, and the oil suction port 30 is used to absorb the transformer oil in the transformer housing 1. The end of the oil suction port 30 away from the piston cylinder 14 is provided with a filter screen 31;

[0045] When in use, the oil pressure flushing component arranged inside the transformer housing 1 can not only clean the inner cavity side wall of the transformer housing 1, but also clean the outer wall of the transformer body 9. Due to the shape adaptation and flushing with its own transformer oil, not only the cleaning effect is good, but also no damage is caused to the inner wall of the transformer housing 1 and the insulating material on the transformer body 9. It can be achieved without disassembly, which improves efficiency and convenience. Moreover, flushing after filtering can prevent impurities from returning to the inner wall of the transformer housing 1 and the outer wall of the transformer body 9 again.

[0046] like Fig.12 , Fig.15As shown, an anti-blocking component is provided on the piston cylinder 14, and the anti-blocking component includes a rotating shaft 41 rotatably connected to the bottom of the inner side of the piston cylinder 14, a spiral guide groove 43 is provided on the outer side of the rotating shaft 41, a driving cylinder 42 is fixedly provided in the middle of the inner side of the piston rod 15, and there is a gap between the driving cylinder 42 and the inner wall of the piston rod 15, the upper end of the rotating shaft 41 is movably connected to the inner side of the driving cylinder 42, and a hemispherical driving block 44 that cooperates with the spiral guide groove 43 for sliding guidance is fixedly provided on the inner wall of the lower end of the driving cylinder 42, the bottom of the rotating shaft 41 extends to the bottom of the piston cylinder 14 and is provided with a brush strip 47 for cleaning the filter screen 31, the anti-blocking component can clean the filter screen 31 while cleaning the inner wall, avoiding blockage affecting the entry of oil, and the structure is compact.

[0047] like Figure 2-Figure 10 As shown, it also includes a driving assembly for driving the cleaning plate 13 to rise and fall, the driving assembly includes a bidirectional screw 8 rotatably connected to the lower end of the inner side of the transformer housing 1, and the two ends of the bidirectional screw 8 are symmetrically threadedly connected with a traction plate 19, and the side of the inner cavity of the transformer housing 1 corresponding to the end of the traction plate 19 is provided with a "concave" guide frame 11, and the lower end of the guide frame 11 is provided with a first transverse guide groove 17 arranged in parallel with the bidirectional screw 8, and the two ends of the guide frame 11 are symmetrically provided with vertical guide grooves 16, and the two ends of the traction plate 19 are symmetrically fixed with connecting shafts 21, and the connecting shaft 21 is away from the traction plate 19. A slider 20 is fixedly provided at one end and cooperates with the first transverse guide groove 17 for sliding guidance. The two ends of the cleaning plate 13 and the corresponding sides of the guide frame 11 are symmetrically connected with the first guide shaft 18, and the end of the first guide shaft 18 away from the cleaning plate 13 extends to the inner side of the vertical guide groove 16 and movably cooperates with the vertical guide groove 16. The first guide shaft 18 is rotatably set on the linkage rod 12, and the lower end of the linkage rod 12 is rotatably set on the connecting shaft 21. A motor 3 for driving the bidirectional screw 8 to rotate is provided on one side of the lower end of the transformer housing 1. The driving mechanism facilitates the longitudinal displacement of the oil pressure flushing component, thereby facilitating the cleaning of the inner wall.

[0048] like Figure 3-Figure 10 , Fig.14As shown, the driving assembly is linked with a cleaning assembly located at the lower end of the inner cavity of the transformer housing 1, and the cleaning assembly includes a push plate 7 that is longitudinally connected and movably connected to the traction plate 19, and a avoidance groove 27 corresponding to the bidirectional screw 8 is provided in the middle of the upper end of the push plate 7. The first fixed blocks 22 are symmetrically provided at both ends of the top of the push plate 7, and an anti-rotation groove 26 is provided at one end of the first fixed block 22 away from the push plate 7. The anti-rotation groove 26 is movably connected with an anti-rotation rod 24, and a second guide shaft 23 is rotatably provided at one end of the anti-rotation rod 24 away from the first fixed block 22. A spring 25 is provided between the anti-rotation rod 24 and the inner wall of the anti-rotation groove 26. The cross-sections of the anti-rotation rod 24 and the anti-rotation groove 26 are both regular polygons, which prevents the anti-rotation rod 24 from rotating and affecting the spring 25. A guide plate 10 is provided on the side of the guide frame 11 close to the inner wall of the transformer housing 1. A guide groove corresponding to the second guide shaft 23 is provided on one side of the guide plate 10 away from the inner wall of the transformer housing 1. The guide groove includes a second transverse guide groove 37 provided on the side of the guide plate 10 away from the inner wall of the transformer housing 1. Each second guide shaft 23 corresponds to two second transverse guide grooves 37, and the two second transverse guide grooves 37 are arranged in parallel. An oblique guide groove 38 is provided at the end of the second transverse guide groove 37, and the oblique guide grooves 38 at the ends of the two second transverse guide grooves 37 are connected, so that the second transverse guide grooves 37 and the oblique guide grooves 38 form a closed loop connection. Two of the diagonally arranged oblique guide grooves 38 on the two second transverse guide grooves 37 are provided with steps 39, and the other two diagonally arranged oblique guide grooves 38 are provided with slopes 40 corresponding to the steps 39. The second guide shaft 23 is movably guided and matched with the second transverse guide grooves 37 and the oblique guide grooves 38;

[0049] When in use, the debris cleaning component is linked with the driving mechanism, which can push the bottom sediment while cleaning the upper end, making it easy to discharge. When resetting, the debris cleaning component rises to avoid pushing back the impurities. The structure is compact and easy to use.

[0050] like Figure 3-Figure 5 , Fig.17 As shown, a heat-conducting substrate 6 is provided on the bottom wall of the inner cavity of the transformer housing 1, and a heating wire 45 is arranged on the inner side of the heat-conducting substrate 6. The arrangement of the heat-conducting substrate 6 and the heating wire 45 can heat the inside of the transformer housing 1 in high-cold areas. By heating the transformer oil at an appropriate temperature, the fluidity of the oil can be significantly improved, the viscosity can be reduced, the smooth circulation of the oil can be ensured, the insulation performance can be effectively enhanced, and local discharge and arc generation can be prevented. At the same time, the deposition of impurities and moisture in the oil can be reduced, the aging and pollution of the oil can be delayed, the reliability and safety of the transformer can be comprehensively improved, the stable operation of the equipment in a low-temperature environment can be ensured, and the hot oil circulation efficiency can be improved to meet the requirements of installation, insulation drying treatment and test grid connection of large-capacity main transformers.

[0051] like Figure 3-Figure 5 , Fig.17As shown, an oil drain groove 46 is provided in the middle of the top of the heat-conducting substrate 6, and the oil drain groove 46 is inclined, and the oil drain groove 46 corresponds to the middle of the bidirectional screw 8, and a discharge port 4 corresponding to the lower end of the oil drain groove 46 is provided on one side of the lower end of the transformer housing 1, and a valve 5 is provided on the discharge port 4 to facilitate the collection and discharge of oil.

[0052] like Figure 1 As shown, a lightning arrester 2 is arranged on the top of the transformer housing 1, and one end of the lightning arrester 2 is electrically connected to the high-voltage side of the transformer housing 1, and the other end is grounded. The lightning arrester 2 can effectively protect the transformer from lightning and overvoltage shock. In thunder and lightning weather, lightning may penetrate into the transformer through the power line, causing the transformer to bear huge overvoltage, thereby causing equipment damage or even fire and other serious accidents. The lightning arrester 2, as a special overvoltage protection device, can quickly introduce lightning energy into the ground to avoid direct shock to the transformer and ensure the safe operation of the transformer.

[0053] Working principle: when using, if the transformer oil inside the transformer housing 1 needs to be replaced and cleaned, first shut down the transformer, open the valve 5 on the discharge port 4, connect the motor 3 to the external power supply, and the transformer oil in the transformer housing 1 is gradually discharged. During this period, the motor 3 continuously drives the bidirectional screw 8 to rotate forward and reverse. When rotating forward, the two traction plates 19 drive the push plate 7 to move closer. At this time, the second guide shaft 23 is located in the second horizontal guide groove 37 at the bottom, and the push plate 7 is at the lowest position, pushing the bottom impurities to the middle and collecting them in the oil drain groove 46 for discharge. At the same time, when the traction plate 19 is displaced, it will drive the connecting shaft 21 and the slider 20 to move synchronously, and then the connecting shaft 21 drives the linkage rod 12 to move and the inclination angle changes. The connecting shaft 21 drives the cleaning plate 13 to move downward through the first guide shaft 18, and the vertical guide groove 16 and the first transverse guide groove 17 on the guide frame 11 are guided. The downward movement of the cleaning plate 13 will drive the piston rod 15 to move downward, thereby squeezing the oil on the inner wall of the piston cylinder 14. The oil flows upward through the gap between the driving cylinder 42 and the inner wall of the piston rod 15, and then enters the square channel 36 after passing through the first one-way valve 28. It is pressed into the nozzle 35 through the square channel 36. The nozzle 35 flushes the surrounding side walls of the inner cavity of the transformer housing 1 and the outer wall of the transformer body 9, and the incoming oil will be filtered by the filter screen 31, and the piston rod 15 will drive the driving cylinder 42 to move longitudinally when it is displaced longitudinally. The driving cylinder 42 passes through the driving block The cooperation between 44 and the spiral guide groove 43 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the avoidance groove 27 to rotate to clean the filter screen 31 to avoid blockage. When the two traction plates 19 are close to the limit distance, the second guide shaft 23 enters the inclined guide groove 38, and then the spring 25 will reset when passing through the step 39, so that the second guide shaft 23 passes through the step 39 and falls into the upper inclined guide groove 38. After that, when the motor 3 is reversed, the two traction plates 19 move away from each other, and the second guide shaft 23 moves to the upper second transverse guide groove 37 under the restriction of the step 39 and the guidance of the slope 40, and then the first fixed block 22 drives the push plate 7 to move upward, and the bottom of the push plate 7 is away from the bottom of the inner cavity of the transformer housing 1 to avoid impurities, etc. After being pushed back, the second guide shaft 23 also passes through the step 39 at the other end and falls into the inclined guide groove 38 below after being reset. Then, when the motor 3 rotates forward again, the second guide shaft 23 enters the second transverse guide groove 37 below again. This cycle is repeated many times until the oil is drained. While the push plate 7 moves back and forth to push the oil, the cleaning plate 13 moves back and forth longitudinally. Under the action of the first one-way valve 28 and the second one-way valve 33, the cleaning plate 13 cleans the inner wall of the transformer housing 1 and the outer wall of the transformer body 9 when moving downward. When moving upward, the oil suction port 30 absorbs the oil at the bottom of the transformer housing 1. After draining, new transformer oil can be injected through the oil pillow. The device greatly saves the steps of replacing transformer oil and improves efficiency and safety.

[0054] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A lightning protection power transmission and distribution device, comprising a transformer housing (1) and a transformer body (9) arranged inside the transformer housing (1), characterized in that: An oil pressure flushing assembly for cleaning the inner wall of the transformer housing (1) and the side wall of the transformer body (9) is arranged on the inner side of the transformer housing (1), the oil pressure flushing assembly comprising a cleaning plate (13) movably connected to the inner side of the transformer housing (1) along the height direction of the transformer housing (1), a contoured opening (34) adapted to the transformer body (9) is arranged in the middle of the cleaning plate (13), the cleaning plate (13) is movably arranged on the outer side of the transformer body (9) through the contoured opening (34), nozzles (35) are arranged on the inner periphery of the contoured opening (34) and around the cleaning plate (13), a square channel (36) connected to the nozzle (35) is arranged on the inner periphery of the cleaning plate (13), and second fixing blocks (29) are symmetrically fixedly arranged at the four corners of the lower end of the inner cavity of the transformer housing (1), the second fixing blocks (29) are fixedly arranged at the four corners of the lower end of the inner cavity of the transformer housing (1), and the second fixing blocks (29) are fixedly arranged at the outer side of the transformer housing (1). 9) is vertically fixedly provided with a piston cylinder (14), the inner side of the upper end of the piston cylinder (14) is movably connected with a hollow piston rod (15), and the upper ends of the four piston rods (15) are respectively connected to the four corners of the bottom of the cleaning plate (13), and the four piston rods (15) are respectively corresponding to and connected to the four corners of the square channel (36), the upper end of the piston rod (15) is provided with a first one-way valve (28), the lower end side of the piston cylinder (14) is connected to a connecting pipe (32), the end of the connecting pipe (32) away from the piston cylinder (14) is provided with an oil suction port (30), the connecting pipe (32) is provided with a second one-way valve (33), the oil suction port (30) is fan-shaped, and the oil suction port (30) is used to suck transformer oil in the transformer housing (1), and the end of the oil suction port (30) away from the piston cylinder (14) is provided with a filter screen (31); The piston cylinder (14) is provided with an anti-blocking component, the anti-blocking component comprising a rotating shaft (41) rotatably connected to the bottom of the inner side of the piston cylinder (14), a spiral guide groove (43) being provided on the outer side of the rotating shaft (41), a driving cylinder (42) being fixedly provided at the middle of the inner side of the piston rod (15), and a gap being provided between the driving cylinder (42) and the inner wall of the piston rod (15), the upper end of the rotating shaft (41) being movably connected to the inner side of the driving cylinder (42), a driving block (44) which is hemispherical and slidingly matched with the spiral guide groove (43) being fixedly provided on the inner wall of the lower end of the driving cylinder (42), the bottom of the rotating shaft (41) extending to the bottom of the piston cylinder (14) and being provided with a brush strip (47) for cleaning the filter screen (31); The utility model also comprises a driving assembly for driving the cleaning plate (13) to rise and fall, the driving assembly comprising a bidirectional screw (8) rotatably connected to the lower end of the inner side of the transformer housing (1), the two ends of the bidirectional screw (8) being symmetrically threadedly connected to the traction plate (19), a guide frame (11) in a "concave" shape is arranged on the side of the inner cavity of the transformer housing (1) corresponding to the end of the traction plate (19), the lower end of the guide frame (11) is provided with a first transverse guide groove (17) arranged parallel to the bidirectional screw (8), the two ends of the guide frame (11) are symmetrically provided with vertical guide grooves (16), the two ends of the traction plate (19) are symmetrically fixed with connecting shafts (21), and the connecting shafts (21) are symmetrically fixed to the two ends of the traction plate (19). A slider (20) is fixedly provided at one end of the connecting shaft (21) away from the traction plate (19) and is slidably guided with the first transverse guide groove (17); two ends of the cleaning plate (13) and the guide frame (11) corresponding to the sides thereof are symmetrically rotatably connected with the first guide shaft (18); an end of the first guide shaft (18) away from the cleaning plate (13) extends to the inner side of the vertical guide groove (16) and is movably matched with the vertical guide groove (16); the first guide shaft (18) is rotatably provided on the linkage rod (12); and the lower end of the linkage rod (12) is rotatably provided on the connecting shaft (21); and a motor (3) for driving the bidirectional screw (8) to rotate is provided on one side of the lower end of the transformer housing (1); The driving assembly is linked to a cleaning assembly located at the lower end of the inner cavity of the transformer housing (1), the cleaning assembly comprising a push plate (7) longitudinally penetrating and movably connected to the traction plate (19), first fixed blocks (22) being symmetrically arranged at both ends of the top of the push plate (7), an anti-rotation groove (26) being arranged at one end of the first fixed block (22) away from the push plate (7), an anti-rotation rod (24) being movably connected to the anti-rotation groove (26), a second guide shaft (23) being rotatably arranged at one end of the anti-rotation rod (24) away from the first fixed block (22), a spring (25) being arranged between the anti-rotation rod (24) and the inner wall of the anti-rotation groove (26), a guide plate (10) being arranged on one side of the guide frame (11) close to the inner wall of the transformer housing (1), a spring (25) corresponding to the second guide shaft (23) being arranged on one side of the guide plate (10) away from the inner wall of the transformer housing (1) A guide groove, the guide groove comprising a second transverse guide groove (37) arranged on a side of the guide plate (10) away from the inner wall of the transformer housing (1), each second guide shaft (23) corresponds to two second transverse guide grooves (37), and the two second transverse guide grooves (37) are arranged in parallel, an oblique guide groove (38) is arranged at the end of the second transverse guide groove (37), and the oblique guide grooves (38) at the ends of the two second transverse guide grooves (37) are arranged in communication, so that the second transverse guide grooves (37) and the oblique guide grooves (38) form a closed loop communication, two of the diagonally arranged oblique guide grooves (38) on the two second transverse guide grooves (37) are provided with steps (39), and the other two diagonally arranged oblique guide grooves (38) are provided with slopes (40) corresponding to the steps (39), and the second guide shaft (23) is movably guided in cooperation with the second transverse guide grooves (37) and the oblique guide grooves (38).

2. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: The first one-way valve (28) is configured so that the oil in the piston rod (15) can only flow into the square channel (36); The second one-way valve (33) is configured so that the oil in the transformer housing (1) can only flow from the connecting pipe (32) to the piston cylinder (14).

3. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: The nozzle (35) is arranged to be tilted downward; There is a gap between the periphery of the cleaning plate (13) and the inner wall of the transformer housing (1); There is a gap between the inner wall of the contoured opening (34) and the outer wall of the transformer body (9).

4. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: The cross sections of the anti-rotation rod (24) and the anti-rotation groove (26) are both regular polygons.

5. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: A avoidance groove (27) corresponding to the bidirectional screw rod (8) is provided in the middle of the upper end of the push plate (7).

6. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: A heat-conducting substrate (6) is arranged on the bottom wall of the inner cavity of the transformer housing (1), and a heating wire (45) is arranged on the inner side of the heat-conducting substrate (6).

7. The lightning protection power transmission and distribution equipment according to claim 6, characterized in that: An oil drain groove (46) is provided at the middle of the top of the heat-conducting substrate (6), and the oil drain groove (46) is arranged obliquely, and the oil drain groove (46) corresponds to the middle of the bidirectional screw (8), and a discharge port (4) corresponding to the lower end of the oil drain groove (46) is provided at one side of the lower end of the transformer housing (1), and a valve (5) is provided on the discharge port (4).

8. The lightning protection power transmission and distribution equipment according to claim 1, characterized in that: A lightning arrester (2) is arranged on the top of the transformer housing (1), and one end of the lightning arrester (2) is electrically connected to the high-voltage side of the transformer housing (1), and the other end is grounded.

Images