New energy explosion-proof transformer

Abstract

The application relates to the technical field of transformers, and discloses a new energy explosion-proof transformer which comprises a pressure storage bin and an oil storage tank. An annular backing plate is arranged on the bottom of the inner cavity of the pressure storage bin and close to the outer side, a pressure relief hole is arranged on the inner wall of the pressure storage bin and above the annular backing plate, a first pressure relief nozzle is arranged on the back of the outer side of the pressure storage bin and close to the top, and a second pressure relief nozzle is arranged on the back of the outer side of the oil storage tank. When the pressure inside the transformer is increased, gas enters a cavity below the bottom plate through the second pressure relief nozzle and a pipeline connected with the first pressure relief nozzle. Since the reset spring is initially in a compressed state and the elastic force and the weight of the oil storage device are balanced, the bottom plate moves upwards after the high-pressure gas enters the cavity between the bottom plate and the pressure storage bin, so that the volume of the cavity is increased, the effect of containing high-pressure gas is achieved, the internal pressure of the transformer can be effectively reduced, and the transformer is prevented from being deformed and cracked due to high pressure.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of transformers, in particular to a new energy explosion-proof transformer. BACKGROUND

[0002] With the development of the performance energy industry, a large number of charging devices of new energy vehicles are installed in various public buildings, shopping malls, public parking lots and underground parking garages of communities. In order to adapt to the charging piles, new energy explosion-proof transformers need to be installed to supply power to various types of charging piles, so as to ensure that each charging pile can supplement the energy of the vehicle under different power conditions. The traditional transformer is filled with insulating oil inside to cool the internal transformer coil. In order to avoid the influence of the expansion of the liquid on the shell, a certain amount of gas is left in the transformer. When the temperature in the transformer rises, the gas expands under the heat, the pressure of the shell of the transformer increases, and the insulating oil is squeezed to cause backflow, which causes the insulating oil level in the transformer to drop and the heat dissipation performance to decrease, and heat runaway and self-ignition and explosion of the transformer are prone to occur. To this end, the application provides a new energy explosion-proof transformer to solve the above problems. SUMMARY

[0003] The application provides a new energy explosion-proof transformer, which has the advantages of reducing the internal pressure of the transformer and balancing the liquid level height in the transformer, so as to solve the problems of insulating oil level drop and heat dissipation capacity decrease caused by gas expansion due to high temperature in the transformer.

[0004] To achieve the above purpose, the application adopts the following technical scheme: a new energy explosion-proof transformer, comprising a base, a transformer is fixedly installed on the top of the base, insulating oil is filled in the inside of the base, a first gas guide nozzle is arranged on the top of the transformer, a first backflow nozzle is arranged on the back of the transformer near the middle, a first flow guide nozzle is arranged on the back of the transformer on the right side of the first backflow nozzle, a pressure storage device is fixedly installed on the top of the base on the position of the back side of the transformer, an oil storage device is fixedly installed on the top of the pressure storage device, a liquid replacement device is fixedly installed on the top of the base on the positions on both sides of the pressure storage device, and a supporting device is fixedly installed on the top of the base on the positions on both sides of the liquid replacement device.

[0005] Further, the pressure storage device comprises a pressure storage bin, an annular pad is arranged on the bottom of the inner cavity of the pressure storage bin near the outer side, a pressure relief hole is arranged on the inner wall of the pressure storage bin on the position above the annular pad, a first pressure relief nozzle is arranged on the back of the outer side of the pressure storage bin near the top, a bottom plate is movably installed in the inner cavity of the pressure storage bin, and the bottom plate is in contact with the top of the annular pad in the initial state, so that a gap is left between the bottom plate and the bottom surface of the pressure storage bin.

[0006] Specifically, a support rod is fixedly installed on the top of the bottom plate near the center, a connecting plate is fixedly installed on the outer surface of the support rod near the middle, a placing table is arranged on the top of the support rod, and a second air guide nozzle is arranged on the top of the bottom plate on the front side of the support rod.

[0007] Specifically, the pressure relief holes are arranged in a ring array, the oil storage device is placed on the top of the placing table, the connecting plate is fixedly connected with the liquid changing device, and the second air guide nozzle is connected with the first air guide nozzle through a pipeline.

[0008] Further, the contact surface between the bottom plate and the inner wall of the pressure storage bin is sealed, and the bottom plate is in the initial state and blocks one end of the pressure relief hole.

[0009] Further, the oil storage device comprises an oil storage tank, and the inside of the oil storage tank is filled with insulating oil.

[0010] Specifically, connecting rods are fixedly installed at both ends of the oil storage tank, a second flow guide nozzle is arranged on the bottom of the oil storage tank, first liquid changing nozzles are arranged on the bottom of the oil storage tank at both ends of the connecting rods, and pressure limiting valves are arranged on the top of the oil storage tank near both ends.

[0011] Specifically, an alarm is fixedly installed on the top of the pressure limiting valve, and a sharp whistle sound is generated when the gas flow passes through the alarm.

[0012] Specifically, a flow guide plate is arranged on the top of the inner cavity of the oil storage tank, flow blocking grids are fixedly installed on the bottom of the flow guide plate, a second pressure relief nozzle is arranged on the back of the outer side of the oil storage tank, and a gas chromatograph is fixedly installed on the side of the inner wall near the top.

[0013] Specifically, the connecting rods are fixedly connected with the support device, the second flow guide nozzle is connected with the first flow guide nozzle through a pipeline, the cross section of the flow guide plate is in the shape of low in the middle and high on both sides, and the second pressure relief nozzle is connected with the first pressure relief nozzle through a pipeline.

[0014] Further, the flow blocking grids are arranged in a linear array, the flow blocking grids are in the shape of a sector and are provided with notches on one side, and the notches of adjacent two flow blocking grids are located on different sides.

[0015] Further, the liquid changing device comprises a liquid changing cylinder, a second backflow nozzle is arranged on the outer side of the liquid changing cylinder near the bottom, a second liquid changing nozzle is arranged on the outer side of the liquid changing cylinder near the top, a telescopic rod is movably installed in the liquid changing cylinder, and a single-way liquid pressing seat is fixedly installed on the bottom of the telescopic rod.

[0016] Specifically, the second backflow nozzle is connected with the first backflow nozzle through a pipeline, and the second liquid exchange nozzle is connected with the first liquid exchange nozzle through a pipeline.

[0017] Further, the outer surface of the single-pass liquid pressing seat is sealed with the inner wall of the liquid exchange cylinder, and the single-pass liquid pressing seat is in an open state during upward movement.

[0018] Further, the support device comprises a stroke sleeve, a limiting rod is fixedly installed at the bottom of the inner cavity of the stroke sleeve, a stroke rod is movably installed on the outer surface of the limiting rod, a reset spring is arranged at the bottom of the stroke rod, the bottom of the reset spring is connected with the bottom of the inner cavity of the stroke sleeve, and the top of the stroke rod is fixedly connected with the connecting rod.

[0019] Further, the liquid level of the insulating oil in the transformer is flush with the liquid level of the insulating oil in the oil storage tank.

[0020] Further, the reset spring is initially in a compressed state, and the elastic force is balanced with the weight of the oil storage device.

[0021] The present application has the following beneficial effects.

[0022] The high-pressure gas in the transformer can be guided to flow to other positions for storage, thereby relieving the high-pressure environment in the transformer, and the pressure difference caused by the liquid level difference is used to guide the insulating oil to flow into the interior of the transformer and supplement the insulating oil therein, so as to avoid abnormal heat dissipation caused by the decrease of the insulating oil level in the transformer. When the high-pressure environment in the transformer cannot be relieved, the pressure can be transmitted to the interior of the oil storage tank through the first pressure relief nozzle, the second pressure relief nozzle and the connecting pipeline, and the insulating oil with lower temperature in the oil storage tank is pumped into the interior of the transformer through the up-down circular movement, so as to realize the effect of cooling the insulating oil in the transformer. When the pressure in the transformer cannot be fully released and continuously increases, the high-pressure gas is discharged through the alarm and a sharp alarm sound is emitted, thereby achieving the effect of warning. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of the specification, illustrate the embodiments of the present application and serve to explain the principles of the present application.

[0024] The present disclosure can be more clearly understood and appreciated from the following detailed description, taken in conjunction with the following drawings of which:

[0025] Figure 1 is a structural schematic view of the present application;

[0026] Figure 2 is a structural main view of the present application;

[0027] Figure 3Figure of the pressure storage device of the present application structure;

[0028] Figure 4 Sectional view of the pressure storage device of the present application structure;

[0029] Figure 5 Structure of the present application Figure 4 Enlarged view at A in the figure;

[0030] Figure 6 Split view of the pressure storage device of the present application structure;

[0031] Figure 7 Figure of the oil storage device of the present application structure;

[0032] Figure 8 Right view of the oil storage device of the present application structure;

[0033] Figure 9 Sectional view of the oil storage device of the present application structure;

[0034] Figure 10 Internal structure view of the oil storage device of the present application structure;

[0035] Figure 11 Figure of the liquid exchange device of the present application structure;

[0036] Figure 12 Split view of the liquid exchange device of the present application structure;

[0037] Figure 13 Sectional view of the liquid exchange device of the present application structure;

[0038] Figure 14 Figure of the support device of the present application structure;

[0039] Figure 15 Sectional view of the support device of the present application structure.

[0040] In the figure; 1, base; 2, transformer; 3, first air guide nozzle; 4, first backflow nozzle; 5, first flow guide nozzle; 6, pressure storage device; 61, pressure storage bin; 62, annular gasket; 63, pressure relief hole; 64, first pressure relief nozzle; 65, bottom plate; 66, support rod; 67, connecting plate; 68, placement table; 69, second air guide nozzle; 7, oil storage device; 71, oil storage tank; 72, connecting rod; 73, second flow guide nozzle; 74, first liquid exchange nozzle; 75, pressure limiting valve; 76, alarm; 77, flow guide plate; 78, flow blocking grid; 79, second pressure relief nozzle; 701, gas chromatograph; 8, liquid exchange device; 81, liquid exchange cylinder; 82, second backflow nozzle; 83, second liquid exchange nozzle; 84, telescopic rod; 85, single-pass liquid pressure seat; 9, support device; 91, stroke sleeve; 92, limiting rod; 93, stroke rod; 94, return spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0042] A new energy explosion-proof transformer, please refer to Figures 1-2 , comprising a base 1, the top of the base 1 is fixedly installed with a transformer 2, the inside of the base 1 is filled with insulating oil, the top of the transformer 2 is provided with a first air guide nozzle 3, the back of the transformer 2 is provided with a first backflow nozzle 4 near the middle, the back of the transformer 2 is provided with a first flow guide nozzle 5 on the right side of the first backflow nozzle 4, the top of the base 1 is fixedly installed with a pressure storage device 6 at a position on the back side of the transformer 2, the top of the pressure storage device 6 is fixedly installed with an oil storage device 7, the top of the base 1 is fixedly installed with a liquid exchange device 8 at positions on both sides of the pressure storage device 6, and the top of the base 1 is fixedly installed with a supporting device 9 at positions on both sides of the liquid exchange device 8.

[0043] Please refer to Figures 3-6 , the pressure storage device 6 comprises a pressure storage bin 61, the bottom of the inner cavity of the pressure storage bin 61 is provided with an annular pad 62 near the outer side, the inner wall of the pressure storage bin 61 is provided with a pressure relief hole 63 at a position above the annular pad 62, the back of the outer side of the pressure storage bin 61 is provided with a first pressure relief nozzle 64 near the top, and the inner cavity of the pressure storage bin 61 movably installs a bottom plate 65, and the bottom plate 65 is in an initial state in contact with the top of the annular pad 62, so that a gap is left between the bottom plate 65 and the bottom surface of the pressure storage bin 61.

[0044] When the inside of the transformer 2 expands due to high temperature, the pressure in the inside of the transformer 2 is increased, the gas enters the cavity below the bottom plate 65 through the second pressure relief nozzle 79 and the pipeline connected with the first pressure relief nozzle 64, and since the reset spring 94 is in an initial compressed state and the elastic force and the weight of the oil storage device 7 are in balance, when the high-pressure gas enters the cavity between the bottom plate 65 and the pressure storage bin 61, the bottom plate 65 moves upward, thereby increasing the volume of the cavity, and the effect of accommodating high-pressure gas is achieved, which can effectively reduce the internal pressure of the transformer 2 and avoid deformation and cracks of the transformer 2 caused by high pressure.

[0045] Please refer to Figures 3-6 , the top of the bottom plate 65 is fixedly installed with a supporting rod 66 near the center, the outer surface of the supporting rod 66 is fixedly installed with a connecting plate 67 near the middle, the top of the supporting rod 66 is provided with a placing table 68, and the top of the bottom plate 65 is provided with a second air guide nozzle 69 at a position on the front side of the supporting rod 66.

[0046] Please refer to Figures 3-6 , the pressure relief hole 63 is distributed in the form of an annular array, the oil storage device 7 is placed on the top of the placement table 68, the connecting plate 67 is fixedly connected with the liquid replacement device 8, and the second air guide nozzle 69 is connected in communication with the first air guide nozzle 3 through a pipeline.

[0047] Please refer to Figures 3-6 , the contact surface between the bottom plate 65 and the inner wall of the pressure storage bin 61 is sealed, and the bottom plate 65 is in an initial state and blocks one end of the pressure relief hole 63.

[0048] When the high-pressure gas enters the cavity between the pressure storage bin 61 and the bottom plate 65 and the bottom plate 65 moves upwards, the bottom plate 65 is in a misaligned state with the pressure relief hole 63, and the vaporized insulating oil can be slowly discharged outward through the pressure relief hole 63 at this time, avoiding the situation that the vaporized insulating oil at high temperature and high pressure is concentrated in the inside of the pressure storage bin 61 and self-ignition occurs. In addition, since the pressure relief hole 63 is provided with multiple pressure relief holes and is distributed in the form of an annular array, the vaporized insulating oil is dispersed and discharged, further reducing the risk of self-ignition and improving the safety of the device.

[0049] Please refer to Figures 7-10 , the oil storage device 7 comprises an oil storage tank 71, and the inside of the oil storage tank 71 is filled with insulating oil.

[0050] Please refer to Figures 7-10 , connecting rods 72 are fixedly installed at both ends of the oil storage tank 71, a second flow guide nozzle 73 is arranged at the bottom of the oil storage tank 71, first liquid replacement nozzles 74 are arranged at positions below the connecting rods 72 at both ends of the oil storage tank 71, and pressure limiting valves 75 are arranged at positions close to both ends at the top of the oil storage tank 71. The through rate of the gas flow can be adjusted by adjusting the pressure limiting valve 75.

[0051] When the bottom plate 65 moves upwards, the placement table 68 moves upwards synchronously, and the oil storage tank 71 is placed on the top of the placement table 68, so that the oil storage tank 71 moves upwards with the placement table 68 during the upward movement of the placement table 68. Since the liquid level of the insulating oil in the inside of the transformer 2 is flush with the liquid level of the insulating oil in the inside of the oil storage tank 71, after the oil storage tank 71 moves upwards, the liquid level of the insulating oil in the inside of the oil storage tank 71 is higher than the liquid level of the insulating oil in the inside of the transformer 2, so that the liquid pressure in the inside of the oil storage tank 71 is higher than the liquid pressure in the inside of the transformer 2. Since the second flow guide nozzle 73 is connected in communication with the first flow guide nozzle 5 through a pipeline, part of the insulating oil in the inside of the oil storage tank 71 flows into the inside of the transformer 2 through the pipeline, thereby supplementing the hydraulic oil in the inside of the transformer 2, avoiding the problem that the liquid level of the insulating oil is lowered and the cooling effect is reduced due to the expansion of the gas in the inside of the transformer 2, eliminating the risk of self-ignition explosion caused by the expansion of the gas due to high temperature, and improving the safety performance of the device.

[0052] Please refer toFigures 7-10 The top of the pressure limiting valve 75 is fixedly provided with an alarm 76, and a sharp whistle sound is generated when gas flows through the alarm 76.

[0053] When the speed of discharging the vaporized insulating oil through the pressure relief hole 63 is lower than the generation speed of the vaporized insulating oil inside the transformer 2, the bottom plate 65 is continuously moved upward, and is always moved to the upper side of the first pressure relief nozzle 64. At this time, the vaporized insulating oil enters the inside of the oil storage device 7 through the first pressure relief nozzle 64 and the pipeline. Since the passing speed of the first pressure relief nozzle 64 is fast, the inside of the pressure storage chamber 61 is rapidly depressurized, avoiding the problem of structural damage caused by overpressure. At the same time, when the vaporized insulating oil passes through the first pressure relief nozzle 64, the inside of the pressure storage chamber 61 is instantaneously depressurized, so that the bottom plate 65 moves downward and reciprocates, so that the bottom plate 65 is in a state of continuously moving up and down. Under the transmission effect of the supporting rod 66 and the connecting plate 67, the telescopic rod 84 is continuously moved up and down. In the process of moving up and down of the telescopic rod 84, the single-way pressure liquid seat 85 is in an open state. At this time, the insulating oil inside the transformer 2 enters the inside of the liquid replacement cylinder 81 through the first liquid replacement nozzle 74, the second liquid replacement nozzle 83 and the connecting pipeline. In the process of moving down of the telescopic rod 84, the single-way pressure liquid seat 85 is in a closed state. At this time, the insulating oil inside the transformer 2 is returned to the inside of the transformer 2 through the second return flow nozzle 82, the first return flow nozzle 4 and the connecting pipeline under the extrusion of the single-way pressure liquid seat 85, so as to realize the replacement of the low-temperature insulating oil in the inside of the oil storage tank 71 with the high-temperature insulating oil in the inside of the transformer 2, and realize the effect of cooling the temperature of the inside of the transformer 2, so as to avoid the occurrence of safety accidents caused by the high temperature of the inside of the transformer 2. While the liquid replacement device 8 continuously pumps the insulating oil in the inside of the oil storage tank 71 into the inside of the transformer 2, the insulating oil in the inside of the transformer 2 returns to the inside of the oil storage tank 71 through the first flow guide nozzle 5, the second flow guide nozzle 73 and the connecting pipeline, so as to maintain the pressure stability of the inside of the transformer 2 and the inside of the oil storage tank 71.

[0054] When the transformer 2 continuously generates vaporized insulating oil, the pressure in the inside of the transformer 2 cannot be released. At this time, the bottom plate 65 moves upward to the limit position in the inside of the pressure storage chamber 61. The high-pressure vaporized insulating oil continuously enters the inside of the oil storage tank 71 through the first pressure relief nozzle 64, the second flow guide nozzle 73 and the connecting pipeline. At this time, the pressure in the inside of the oil storage tank 71 is continuously increased and exceeds the limit of the pressure limiting valve 75, and is discharged outward through the alarm 76. Since a sharp whistle sound is generated when gas flows through the alarm 76, the alarm 76 plays a warning role, so that the nearby staff can quickly learn that the transformer has a fault and needs to be treated in time, thereby improving the reliability of the device.

[0055] Please refer to Figures 7-10The top of the inner cavity of the oil storage tank 71 is provided with a flow guide plate 77, the bottom of the flow guide plate 77 is fixedly installed with a flow blocking grid 78, the back of the outer side of the oil storage tank 71 is provided with a second pressure relief nozzle 79, and the inner wall of the oil storage tank 71 is fixedly installed with a gas chromatograph 701 near the top.

[0056] The gas chromatograph 701 can analyze the gas composition inside the oil storage tank 71 in real time. If hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide or carbon dioxide appears, it represents that a serious fault occurs inside the transformer. At this time, the device can be directly stopped and personnel can be notified for maintenance, thereby avoiding the problem that the problem caused by the internal fault of the transformer is aggravated, causing a serious safety accident, and improving the practicality of the device.

[0057] Please refer to Figure 2 , Figure 4 and Figures 7-10 , the connecting rod 72 is fixedly connected with the supporting device 9, the second flow guide nozzle 73 is connected with the first flow guide nozzle 5 through a pipeline, the cross section of the flow guide plate 77 is in the shape of low in the middle and high on both sides, and the second pressure relief nozzle 79 is connected with the first pressure relief nozzle 64 through a pipeline.

[0058] Please refer to Figure 10 , the flow blocking grids 78 are distributed in a linear array, the flow blocking grids 78 are in the shape of a sector and are provided with notches on one side, and the notches of adjacent two flow blocking grids 78 are located on different sides.

[0059] When the high-temperature vaporized insulating oil enters the inside of the oil storage tank 71, it will contact the flow guide plate 77 and the flow blocking grid 78. Since the high-temperature vaporized insulating oil has low density and the cross section of the flow guide plate 77 is in the shape of low in the middle and high on both sides, the vaporized insulating oil will move along the bottom of the flow guide plate 77 to both sides after leaving the second pressure relief nozzle 79. In this process, since the flow blocking grids 78 are distributed in a linear array and the flow blocking grids 78 are in the shape of a sector and are provided with notches on one side, the notches of adjacent two flow blocking grids 78 are located on different sides, so that the vaporized insulating oil will flow back and forth between the flow blocking grids 78 while flowing to both sides along the flow guide plate 77, and fully contacts each flow blocking grid 78. In this process, the vaporized insulating oil is cooled to liquefy and drop and re-mix with the insulating oil inside the oil storage tank 71, forming a cycle, thereby avoiding waste of the insulating oil.

[0060] Please refer to Figures 11-13 , the liquid changing device 8 comprises a liquid changing cylinder 81, the outer side of the liquid changing cylinder 81 is provided with a second backflow nozzle 82 near the bottom, the outer side of the liquid changing cylinder 81 is provided with a second liquid changing nozzle 83 near the top, the inside of the liquid changing cylinder 81 is movably installed with a telescopic rod 84, and the bottom of the telescopic rod 84 is fixedly installed with a single-way liquid pressing seat 85.

[0061] Please refer to Figure 2 , Figure 7And Figures 11-13 The second backflow nozzle 82 is connected with the first backflow nozzle 4 through a pipeline, and the second liquid exchange nozzle 83 is connected with the first liquid exchange nozzle 74 through a pipeline.

[0062] Please refer to Figures 11-13 The outer surface of the single-way liquid pressing seat 85 is sealed with the inner wall of the liquid exchange cylinder 81, and the single-way liquid pressing seat 85 is in an open state during the upward movement.

[0063] Please refer to Figures 14-15 The support device 9 comprises a stroke sleeve 91, the bottom of the inner cavity of the stroke sleeve 91 is fixedly installed with a limiting rod 92, the outer surface of the limiting rod 92 is movably installed with a stroke rod 93, the bottom of the stroke rod 93 is provided with a reset spring 94, the bottom of the reset spring 94 is connected with the bottom of the inner cavity of the stroke sleeve 91, and the top of the stroke rod 93 is fixedly connected with the connecting rod 72.

[0064] Please refer to Figure 2 And Figure 7 The liquid level of the insulating oil in the transformer 2 is kept flush with the liquid level of the insulating oil in the oil storage tank 71.

[0065] Please refer to Figure 1 And Figure 15 The reset spring 94 is initially in a compressed state, and the elastic force is balanced with the weight of the oil storage device 7.

[0066] The use method of the present application is as follows:

[0067] During use, when the internal temperature of the transformer 2 is high, the upper gas in the transformer 2 expands, the pressure in the transformer 2 increases, the gas enters the cavity below the bottom plate 65 through the second pressure relief nozzle 79 and the pipeline connected with the first pressure relief nozzle 64, and the bottom plate 65 moves upward because the reset spring 94 is initially in a compressed state and the elastic force is balanced with the weight of the oil storage device 7, so that the volume of the cavity between the bottom plate 65 and the pressure storage bin 61 increases, thereby accommodating the high-pressure gas, which can effectively reduce the internal pressure of the transformer 2. During the upward movement of the bottom plate 65, the placement table 68 moves upward synchronously, and the oil tank 71 is placed on the top of the placement table 68, so that the oil tank 71 moves upward with the upward movement of the placement table 68. Because the liquid level of the insulating oil in the transformer 2 is flush with the liquid level of the insulating oil in the oil tank 71, after the oil tank 71 moves upward, the liquid level of the insulating oil in the oil tank 71 is higher than the liquid level of the insulating oil in the transformer 2, so that the liquid pressure in the oil tank 71 is higher than the liquid pressure in the transformer 2. Because the second flow guide nozzle 73 is connected with the first flow guide nozzle 5 through a pipeline, part of the insulating oil in the oil tank 71 flows into the transformer 2 through the pipeline, thereby supplementing the hydraulic oil in the transformer 2. After the high-pressure gas enters the cavity between the pressure storage bin 61 and the bottom plate 65 and the bottom plate 65 moves upward, the bottom plate 65 and the pressure relief hole 63 are out of position, and the vaporized insulating oil can be slowly discharged outward through the pressure relief hole 63, thereby avoiding the situation that the vaporized insulating oil at high temperature and high pressure is concentrated in the pressure storage bin 61 and self-ignites. In addition, because the pressure relief hole 63 is arranged in a ring array, the vaporized insulating oil is dispersed and discharged, thereby further reducing the risk of self-ignition. When the discharge speed of the vaporized insulating oil through the pressure relief hole 63 is lower than the generation speed of the vaporized insulating oil in the transformer 2, the bottom plate 65 continuously moves upward and moves to the upper side of the first pressure relief nozzle 64. At this time, the vaporized insulating oil enters the oil storage device 7 through the first pressure relief nozzle 64 and the pipeline. Because the first pressure relief nozzle 64 has a high flow rate, the pressure in the pressure storage bin 61 is rapidly reduced, thereby avoiding the problem of structural damage caused by overpressure. At the same time, when the vaporized insulating oil passes through the first pressure relief nozzle 64, the pressure in the pressure storage bin 61 is instantaneously lost, so that the bottom plate 65 moves downward and repeatedly moves, thereby making the bottom plate 65 continuously move up and down. Under the transmission effect of the support rod 66 and the connecting plate 67, the telescopic rod 84 continuously moves up and down. During the upward movement of the telescopic rod 84, the single-way pressure seat 85 is in an open state, and at this time, the insulating oil in the transformer 2 enters the liquid exchange cylinder 81 through the first liquid exchange nozzle 74, the second liquid exchange nozzle 83 and the connecting pipeline. During the downward movement of the telescopic rod 84, the single-way pressure seat 85 is in a closed state, and at this time, the insulating oil in the transformer 2 passes through the second backflow nozzle 82 under the extrusion of the single-way pressure seat 85.The first backflow nozzle 4 and the connecting pipeline backflow to the inside of the transformer 2, so as to realize the replacement of the low-temperature insulating oil in the inside of the oil storage tank 71 to the high-temperature insulating oil in the inside of the transformer 2, realize the effect of cooling the temperature of the inside of the transformer 2, so as to avoid the occurrence of safety accidents caused by the excessively high temperature in the inside of the transformer 2. The liquid exchange device 8 pumps the insulating oil in the inside of the oil storage tank 71 into the inside of the transformer 2 at the same time, the insulating oil in the inside of the transformer 2 backflows to the inside of the oil storage tank 71 through the first flow guide nozzle 5, the second flow guide nozzle 73 and the connecting pipeline, so as to maintain the stable pressure in the inside of the transformer 2 and the inside of the oil storage tank 71. When the high-temperature vaporized insulating oil enters the inside of the oil storage tank 71, it will contact the flow guide plate 77 and the flow blocking grid 78. Since the high-temperature vaporized insulating oil has a low density, and the cross section of the flow guide plate 77 is low in the middle and high on both sides, the vaporized insulating oil will move to both sides along the bottom of the flow guide plate 77 after leaving the second pressure relief nozzle 79. In this process, since the flow blocking grids 78 are distributed in a linear array, the flow blocking grids 78 are fan-shaped and have a notch on one side, and the notches of the two adjacent flow blocking grids 78 are located on different sides, so that the vaporized insulating oil will flow back and forth between the flow blocking grids 78 while flowing to both sides along the flow guide plate 77, and fully contacts each flow blocking grid 78. In this process, the vaporized insulating oil is cooled to liquefy and re-mix with the insulating oil in the inside of the oil storage tank 71, forming a cycle. When the transformer 2 continuously generates vaporized insulating oil, causing the pressure in the inside of the transformer 2 to be unable to be released, at this time, the bottom plate 65 moves up to the position limit in the inside of the pressure storage bin 61, the high-pressure vaporized insulating oil continuously enters the inside of the oil storage tank 71 through the first pressure relief nozzle 64, the second flow guide nozzle 73 and the connecting pipeline. At this time, the pressure in the inside of the oil storage tank 71 is also continuously rising and exceeds the limit of the pressure limiting valve 75, and is discharged outward through the alarm 76. Since the airflow produces a sharp whistling sound when passing through the alarm 76, the alarm 76 plays a warning role, so that the nearby staff can quickly learn that the transformer has a fault and needs to be treated in time. The gas chromatograph 701 can analyze the gas composition in the inside of the oil storage tank 71 in real time. If hydrogen, methane, ethane, ethylene, acetylene, carbon monoxide or carbon dioxide appears, it represents that there is a serious fault in the inside of the transformer. At this time, the device can be directly stopped and personnel can be notified for maintenance, so as to avoid the problem caused by the internal fault of the transformer being aggravated, causing a serious safety accident, and improve the practicality of the device.

Claims

1. A new energy explosion-proof transformer, characterized in that, The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8); The utility model provides a variable voltage transformer, including base (1), the top of base (1) is fixedly installed with transformer (2), the top of transformer (2) is provided with first air guide nozzle (3), the back of transformer (2) is provided with first backflow nozzle (4) near the position of middle, the back of transformer (2) is provided with first flow guide nozzle (5) on the position of right side of first backflow nozzle (4), the top of base (1) is fixedly installed with pressure storage device (6) on the position of rear side of transformer (2), the top of pressure storage device (6) is fixedly installed with oil storage device (7), the top of base (1) is fixedly installed with liquid exchange device (8) on the position of both sides of pressure storage device (6), the top of base (1) is fixedly installed with support device (9) on the position of both sides of liquid exchange device (8) The connecting rod (72) is fixedly connected with the supporting device (9), the second flow guide nozzle (73) is connected with the first flow guide nozzle (5) through a pipeline, the flow guide plate (77) has a cross section in the shape of low in the middle and high on both sides, the second pressure relief nozzle (79) is connected with the first pressure relief nozzle (64) through a pipeline; the liquid changing device (8) comprises a liquid changing cylinder (81), a second backflow nozzle (82) is arranged on the outer side of the liquid changing cylinder (81) close to the bottom, a second liquid changing nozzle (83) is arranged on the outer side of the liquid changing cylinder (81) close to the top, a telescopic rod (84) is movably mounted in the liquid changing cylinder (81), and a single-way liquid pressing seat (85) is fixedly mounted at the bottom of the telescopic rod (84). The second backflow nozzle (82) is connected with the first backflow nozzle (4) through a pipeline, and the second liquid changing nozzle (83) is connected with the first liquid changing nozzle (74) through a pipeline.

2. The new energy explosion-proof transformer according to claim 1, characterized in that, The bottom plate (65) is in sealing contact with the inner wall of the pressure storage bin (61), the bottom plate (65) is located at a position corresponding to the pressure relief hole (63) in the initial state, and one end of the pressure relief hole (63) is blocked.

3. The new energy explosion-proof transformer according to claim 1, characterized in that, The flow blocking grilles (78) are distributed in a linear array, the flow blocking grilles (78) are in the shape of a sector and are provided with notches on one side, and the notches of adjacent two flow blocking grilles (78) are located on different sides.

4. The new energy explosion-proof transformer according to claim 1, characterized in that, The outer surface of the single-way liquid pressing seat (85) is in sealing contact with the inner wall of the liquid changing cylinder (81), and the single-way liquid pressing seat (85) is in an open state during upward movement.

5. The new energy explosion-proof transformer according to claim 1, characterized in that, The supporting device (9) comprises a stroke sleeve (91), a limiting rod (92) is fixedly installed at the bottom of the inner cavity of the stroke sleeve (91), a stroke rod (93) is movably installed on the outer surface of the limiting rod (92), a reset spring (94) is arranged at the bottom of the stroke rod (93), the bottom of the reset spring (94) is connected with the bottom of the inner cavity of the stroke sleeve (91), and the top of the stroke rod (93) is fixedly connected with the connecting rod (72).

6. The new energy explosion-proof transformer according to claim 1, characterized in that, The liquid level of the insulating oil in the transformer (2) is flush with the liquid level of the insulating oil in the oil storage tank (71).

7. The new energy explosion-proof transformer according to claim 5, characterized in that, The reset spring (94) is initially in a compressed state, and the elastic force is balanced with the weight of the oil storage device (7).

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