A transformer breather that is free of disassembly and a method of using the same

Abstract

The present application relates to the technical field of transformer breather, especially relates to a disassembly-free transformer breather and a use method thereof, the breather comprises: a mounting flange fixed to the transformer; a shell with a top fixed to the mounting flange and a slotted side wall; a breathing manifold placed in the shell and a side air inlet; a bottom plate rotatable at the bottom of the shell and a communication hole; a plurality of partitions fixed to the bottom plate and a series air channel and a branch air channel; a drying cylinder placed between adjacent partitions and having a first air inlet, a second air inlet and an air outlet; the air outlet is connected to the first air inlet of the adjacent cylinder through the series air channel; a baffle for abutting against the drying cylinder, a baffle plate mounted at the bottom of the bottom plate and an internal communication channel and an internal-external connection channel, a glass cylinder fixed to the bottom surface of the baffle plate and an oil collecting cup, the internal communication channel is connected to the communication hole and the glass cylinder, and the internal-external connection channel is connected to the oil collecting cup and the outside. The present application can quickly and conveniently replace the colored moisture-absorbing silica gel without disassembling the transformer breather.

Description

Technical Field

[0001] This invention relates to the field of transformer breather technology, and in particular to a transformer breather that does not require disassembly and its usage method. Background Technology

[0002] Power transformers are among the most important pieces of equipment in power grids and core components of substations. The breather is the primary organ for breathing the transformer tank, and its routine maintenance is crucial for maintaining normal pressure inside the main transformer. The silica gel filter material in the transformer breather is blue when dry, but turns pale red after absorbing moisture and impurities from the outside air during operation. When the color change reaches 2 / 3, it indicates that the absorbent has become damp and needs replacement. This process requires regular inspections and manual replacement by maintenance personnel.

[0003] Transformer breathers are quite heavy, with some high-voltage transformer breathers weighing over 15 kg. Disassembling and replacing these breathers is difficult, time-consuming, and prone to sealing issues. Furthermore, most of the silica gel is still in a non-absorbent state, but it's difficult to separate, requiring complete replacement and wasting discolored silica gel. Disassembly and replacement also easily cause the hygroscopic silica gel to scatter, hindering its recovery and resulting in material waste, even with inlet and outlet ports. Traditional breather disassembly and replacement methods require disabling the heavy gas protection system to prevent excessive air intake into the transformer during disassembly, which could trigger the gas protection and trip the transformer. Therefore, the operation is cumbersome. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a transformer breather that does not require disassembly and its usage method. It has the advantage of allowing for quick and convenient replacement of discolored moisture-absorbing silica gel without disassembling the transformer breather, effectively solving the problems in the background technology.

[0005] The present invention provides a transformer breather that does not require disassembly, comprising: Install the flange and fix it to the transformer; The outer casing is fixed to the mounting flange at the top, and has slots on the side walls; The breathing tube is located inside the outer casing, with its top connected to the inside of the transformer and its side having an air inlet. The chassis rotates at the bottom of the outer shell and has multiple connecting vents; Multiple baffles are distributed circumferentially inside the outer shell and fixed to the chassis at the bottom; each baffle is provided with a series air passage and a branch air passage connected to the series air passage at one end. Multiple drying cylinders; each drying cylinder is positioned between two adjacent partitions, with a first air inlet on the bottom side, an air outlet on the top side, and a second air inlet on the bottom side; moisture-absorbing silica gel is placed inside the drying cylinder; The air outlet of each drying cylinder is connected to the first air inlet of the adjacent drying cylinder through a series air inlet, and the second air inlet is connected to the connecting air hole. Multiple baffles, each with one end hinged to a partition, are used to hold the drying cylinder in place; An air baffle is installed at the bottom of the chassis and is fixedly connected to the bottom of the breathing tube; the air baffle is equipped with an internal connecting airway and an internal and external connecting airway. A glass cylinder is fixed to the bottom of the air baffle plate; an oil seal with a through hole is installed at the bottom of the glass cylinder; The oil collection cup is fixed to the bottom of the air baffle plate and covers the glass cylinder; The internal connecting air passage is connected to the connecting air hole and the glass cylinder at both ends; the internal and external connecting air passages are connected to the oil collection cup and the outside at both ends.

[0006] Furthermore, a one-way valve is installed inside the breathing tube below the inlet to ensure that gas can only flow from the top to the bottom of the breathing tube; a one-way valve is installed at the inlet to ensure that gas can only enter the breathing tube; and a one-way valve is installed in the series airway to ensure that gas can only flow from the outlet airway toward the first inlet airway.

[0007] Furthermore, a dividing plate with multiple through holes is provided inside the drying cylinder, and the dividing plate forms a gap with the bottom of the drying cylinder, with the first air intake channel higher than the dividing plate.

[0008] Furthermore, a widened opening is provided at the air intake, and the widened opening is always connected to a branch air passage.

[0009] Furthermore, the series air passage is configured with a first horizontal section and a second horizontal section, the first horizontal section being lower than the second horizontal section, the first horizontal section being connected to the outlet air passage, and the second horizontal section being connected to the first intake air passage.

[0010] Furthermore, the branch airway connects to the second horizontal segment.

[0011] Furthermore, a one-way rotation structure is set between the chassis and the air deflector, so that the chassis can only rotate in one direction; The unidirectional rotation structure includes multiple V-shaped grooves on the chassis, and the multiple V-shaped grooves are arranged circumferentially at the center of the chassis; the inclination of one side of the V-shaped groove is smaller than that of the other side; It also includes a blocking device installed on the breathing tube, with one end of the blocking device hinged to the breathing tube and the other end fitted with a V-groove.

[0012] Furthermore, an arc-shaped guide plate is provided on one side of the slotted outer shell.

[0013] Furthermore, a connecting block is provided on one side of the adjacent partition located at the center of the outer shell; a spring is provided between the drying cylinder and the connecting block.

[0014] This invention also provides a method for using a transformer breather that does not require disassembly, comprising the following steps: The system detects the color change of the moisture-absorbing silica gel inside the drying cylinder corresponding to the air intake position. If the color is blue, it operates normally and continues to detect; if the color turns light red, an alarm signal is issued. After receiving the alarm signal, the personnel first disconnect the dryer cylinder at the air intake position from other components; then push the chassis to rotate, so that the dryer cylinder at the air intake position rotates to the slot in the outer shell; Personnel can remove the drying cylinder by opening the baffle. After replacing the desiccant or the entire drying cylinder, reconnect the drying cylinder to other components, close the baffle again, and push the chassis to rotate so that the other drying cylinder moves to the air intake position, and the new drying cylinder moves to the standby position.

[0015] The technical solution of this invention can achieve the following technical effects: This invention connects multiple drying cylinders in series via a one-way airway within a partition, allowing inhaled gas to flow sequentially through multiple drying cylinders, significantly extending the effective filtration path and greatly improving drying efficiency. One-way valves at the top and bottom of the breathing tube allow exhaled airflow to bypass the drying cylinders and exit directly. Combined with a dividing plate at the bottom of the drying cylinder to separate the hygroscopic silica gel from the air inlet, this effectively prevents oil and splashes from entering the drying cylinder, fundamentally solving the problem of clogging in traditional respirators and preventing the hygroscopic silica gel from losing its absorbency due to oil film adhesion or encapsulation. The widened arc-shaped opening at the top of the breathing tube ensures airway connectivity during base rotation when changing drying cylinders, allowing continuous respirator operation without needing to disable heavy gas protection. The one-way rotation structure of the base, in conjunction with the arc-shaped guide plate at the slotted outer shell, allows the baffle to close automatically during rotation, simplifying replacement operations. A color sensor automatically monitors silica gel discoloration and sends an alarm signal, avoiding the risk of untimely manual inspection. This invention significantly improves drying efficiency, anti-clogging, and ease of maintenance compared to existing technologies. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a transformer breather that eliminates the need for disassembly; Figure 2 A schematic diagram showing the transformer breather during intake, designed to avoid disassembly. Figure 3 This is a schematic diagram of the structure after multiple drying cylinders and series air passages are deployed; Figure 4 A schematic diagram of the transformer breather during exhaust to avoid disassembly; Figure 5 A top-view cross-sectional view of the transformer breather during normal operation, without requiring disassembly; Figure 6 for Figure 5 Enlarged view of point A; Figure 7 A top-view cross-sectional view of the transformer breather before the baffle is opened when replacing the drying cylinder, to avoid disassembling the transformer breather; Figure 8 for Figure 7 Enlarged view of point B; Figure 9 A top-view cross-sectional view of the transformer breather after the baffle is opened when replacing the drying cylinder to avoid disassembling the transformer breather; Figure 10 This is a schematic diagram of the drying cylinder. Figure 11 This is a schematic diagram of the structure of a breathing tube; Figure 12 This is a top view of the air deflector; Figure 13 A schematic diagram of the first embodiment of the unidirectional rotation structure; Figure 14 A schematic diagram of the second embodiment of the unidirectional rotation structure; Figure 15 A flowchart illustrating the usage method of a transformer breather that eliminates the need for disassembly.

[0018] Reference numerals: 1. Mounting flange; 2. Housing; 21. Arc-shaped guide plate; 3. Breathing pipe; 31. Air inlet; 32. Widened opening; 33. Blocking component; 4. Chassis; 41. Connecting air hole; 42. V-groove; 5. Partition; 51. Series air passage; 511. First horizontal section; 512. Second horizontal section; 52. Branch air passage; 6. Drying cylinder; 61. First air inlet; 62. Air outlet; 63. Second air inlet; 64. Dividing plate; 7. Baffle; 8. Air baffle plate; 81. Internal connecting air passage; 82. Internal and external connecting air passage; 9. Glass cylinder; 10. Oil collection cup; 11. Spring; 12. Color sensor. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] This invention relates to a transformer breather that does not require disassembly, such as... Figure 1 As shown, the main components include mounting flange 1, outer shell 2, breather pipe 3, chassis 4, baffle 5, drying cylinder 6, baffle 7, air baffle plate 8, glass cylinder 9, and oil collection cup 10. The specific installation method and structure of each component are as follows: Mounting flange 1 is used to securely mount the entire respirator device onto the transformer. A hole is located in the center of mounting flange 1, which communicates with the transformer's interior after mounting. The top of the outer casing 2 is fixed to mounting flange 1, and slots are provided on its side walls for the entry and exit of the drying cylinder 6. A color sensor 12 is also installed on the outer side wall of the outer casing 2, capable of real-time monitoring of color changes in the moisture-absorbing silica gel inside the drying cylinder 6. The color sensor 12 can wirelessly transmit alarm signals using Wi-Fi, Bluetooth, cellular mobile communication, or ultra-wideband technology.

[0022] Breathing manifold 3 is installed inside the outer casing 2; the center of breathing manifold 3 has a vertically penetrating cavity, and the top of breathing manifold 3 extends to the mounting flange 1, so that the center of breathing manifold 3 connects to the hole in the center of mounting flange 1, allowing breathing manifold 3 to communicate with the inside of the transformer; an air inlet 31 is provided on the side of breathing manifold 3, such as... Figure 11 As shown, the air inlet 31 connects the inside and outside of the breathing tube 3.

[0023] The chassis 4 rotates at the bottom of the outer casing 2, and the chassis 4 has multiple vertically penetrating vents 41. A handle is provided on the side of the chassis 4, and personnel can rotate the chassis 4 by turning the handle.

[0024] Multiple partitions 5 are arranged circumferentially within the outer casing 2. The bottom of each partition 5 is fixed to the chassis 4, allowing it to rotate with the chassis 4. Each partition 5 contains a series airway 51, with both ends extending to the outside of the partition 5. Each partition 5 also contains a branch airway 52, one end of which connects to the series airway 51, and the other end of which rests against the outer wall of the breathing tube 3. Figure 5 , 7 As shown in Figure 9, an arc-shaped groove can be provided on the inner wall of the partition 5 to hold the drying cylinder 6 in place. The partition 5 has certain strength, wear resistance, rigidity and airtightness, and can be made of materials such as plexiglass or stainless steel.

[0025] Multiple drying cylinders 6 are arranged circumferentially within the outer shell 2. The number of drying cylinders 6 is the same as the number of partitions 5, and each drying cylinder 6 is positioned between two adjacent partitions 5. Each drying cylinder 6 is as follows: Figure 10 As shown, a first air inlet 61 is provided at the bottom of one side of the drying cylinder 6, an air outlet 62 is provided at the top of the other side, and a second air inlet 63 is provided at the bottom. Moisture-absorbing silica gel is placed inside the drying cylinder 6. The silica gel is blue when dry and turns light red after absorbing water. The walls of the drying cylinder 6 should have good light transmittance and high strength, and the material can be polyvinyl chloride, polystyrene, or tempered glass, so that the discoloration of the silica gel after it absorbs water can be detected promptly.

[0026] The air outlet 62 of each drying cylinder 6 is connected to the first air inlet 61 of the adjacent drying cylinder 6 via a series air passage 51. Multiple series air passages 51 can connect multiple drying cylinders 6 in series, such as... Figure 3 As shown. The second air inlet 63 at the bottom of each drying cylinder 6 is connected to the connecting air hole 41 of the chassis 4; in a high humidity environment, only one can be connected to the connecting air hole 41 on the upper surface of the chassis 4 through a nut with a rubber ring (i.e., at the air inlet position, used to connect with the internal connecting air channel 81 of the baffle plate 8), and the second air inlets 63 at the bottom of the remaining drying cylinders 6 are sealed with threaded plugs to prevent moisture.

[0027] Multiple baffles 7 are provided, the number of which matches the number of partitions 5. Each baffle 7 is hinged at one end to a partition 5, allowing the space between adjacent partitions 5 to be opened and closed by rotation. When a baffle 7 is closed, its sidewall abuts against the drying cylinder 6, thus restricting its movement. If necessary, a latch, magnet, or other component can be provided at the non-hinged end of the baffle 7 to prevent it from opening too easily. Figure 5 , 7 As shown in Figures 9 and 1, an arc-shaped groove can be provided on the inner side of the baffle 7 to hold the drying cylinder 6 in place.

[0028] The diameter of the air baffle 8 is smaller than that of the base 4, and it is embedded in the bottom of the base 4 on three sides. During installation, a fixed disc can be installed at the bottom of the breathing tube 3. The outer surface of the disc has two concave surfaces on its sides, and the inner surface of the air baffle 8 has a pair of convex surfaces that can tightly fit against the concave surfaces of the outer surface of the fixed disc at the bottom of the breathing tube 3, allowing the air baffle 8 to remain stationary relative to the breathing tube 3. The air baffle 8 is provided with an internal connecting airway 81 and an internal and external connecting airway 82, such as... Figure 12 As shown, the two ends of the internal connecting airway 81 are connected to the connecting air hole 41 and the glass cylinder 9, respectively; the two ends of the internal and external connecting airway 82 are connected to the oil collecting cup 10 and the outside, respectively. A screw is inserted into the bottom of the air baffle 8, and the upper end of the screw passes through the inside of the breathing tube 3 and is fixed to the top of the outer shell 2, thereby enhancing the fixation of the air baffle 8.

[0029] The glass cylinder 9 is fixed to the bottom surface of the baffle plate 8; an oil seal with a through hole is provided at the bottom of the glass cylinder 9. The oil collection cup 10 is fixed to the bottom surface of the baffle plate 8 and covers the glass cylinder 9.

[0030] Typically, a connecting block is installed on one side of the adjacent partition 5 located at the center of the outer shell 2, connecting the partition 5 into a single unit. At this time, a spring 11 can be installed between the drying cylinder 6 and the connecting block. After the drying cylinder 6 is installed, the spring 11 will be compressed; when it is removed, the disassembled drying cylinder 6 will move outward of the slot in the outer shell 2 under the elastic force of the spring 11's restoring deformation, thereby driving the baffle 7 to rotate and open, facilitating personnel to perform replacement work.

[0031] The principle of this respirator is as follows: When the respirator is working, the internal connecting airway 81 aligns and connects with a connecting air port 41. At this time, the position of the drying cylinder 6 connected to the internal connecting airway 81 becomes the air intake position. Since the baffle plate 8 does not move, the air intake position is also fixed. A branch airway 52 connects to the air intake port 31, such as... Figures 5-6 As shown.

[0032] When the transformer load decreases or the temperature drops, the air pressure inside the transformer's oil conservator decreases, requiring the use of a breather to draw air from the outside. During air intake... Figures 2-3 As shown, the gas enters the drying cylinder 6 at the air inlet position in the following order: internal and external connecting air passage 82 - oil collecting cup 10 - glass cylinder 9 - internal connecting air passage 81 - connecting air hole 41 - second air inlet 63. Then the gas passes through multiple series-connected drying cylinders 6 in sequence, and finally reaches the series air passage 51 corresponding to the branch air passage 52 connected to the air inlet 31. It flows into the breathing pipe 3 through the branch air passage 52 and finally flows into the oil conservator of the transformer.

[0033] The number of drying cylinders 6 that the airflow can pass through during intake is related to the angle between the intake position and the intake port 31. Figure 3 As shown in the example, there are four drying cylinders 6 (including the drying cylinder 6 at the air inlet) between the air inlet position and the air inlet 31. When the gas is inhaled, it will flow through the four drying cylinders 6. According to specific usage needs, the personnel can rotate the breathing tube 3 to adjust the position of the air inlet 31 and then fix it again, so as to change the number of drying cylinders 6 between the air inlet position and the air inlet 31, thereby meeting the drying needs in different environments.

[0034] When the transformer load increases or the temperature rises, the air pressure in the transformer's internal oil conservator increases. It is necessary to expel the expanded air through the breather to prevent excessive internal pressure. During venting... Figure 4 As shown, the airflow flows downward from the top of the breathing tube 3 and directly into the glass tube 9, then into the oil collection cup 10, and is discharged to the outside through the internal and external connecting airways 82.

[0035] The instructions for using this transformer-free respirator are as follows: Figure 5 , 7 As shown in 9 and 15, the steps include: The first step is to ensure the respirator is functioning properly, such as... Figure 5 As shown, the color sensor 12 detects the color change of the moisture-absorbing silica gel in the drying cylinder 6 corresponding to the air intake position in real time, or can be observed directly by the human eye. If the color is blue, it indicates normal operation, so the respirator is kept in normal operation and monitoring continues. If the color turns light red, it indicates that the drying cylinder 6 needs to be replaced, and an alarm signal needs to be issued in time.

[0036] The second step, after receiving the alarm signal, is to first disconnect the dryer cylinder 6 at the air intake position from other components, such as the connection between the first air intake duct 61 and the series air duct 51, the connection between the air outlet duct 62 and another series air duct 51, and the connection between the second air intake duct 63 and the connecting air hole 41. Then, the handle is turned to rotate the chassis 4, causing the dryer cylinder 6 at the air intake position to rotate to the slot in the outer casing 2, as shown below. Figure 7 As shown; with spring 11 present, when the drying cylinder 6 rotates to the slot in the outer casing 2, since the connection between the drying cylinder 6 and other components has been released, spring 11 directly pushes the drying cylinder 6 outward to open the baffle 7, as shown. Figure 9 As shown.

[0037] Third, personnel can remove the drying cylinder 6 by opening the baffle 7, replace the moisture-absorbing silica gel inside the drying cylinder 6 or the entire drying cylinder 6, reconnect the drying cylinder 6 to other components, close the baffle 7 again, and push the chassis 4 to rotate so that the other drying cylinder 6 is turned to the air intake position. The new drying cylinder 6 is turned to the standby position, and the respirator can start working again.

[0038] To ensure that the airflow within the respirator follows the designed path, a one-way valve is preferably installed inside the breathing tube 3 below the air inlet 31. This allows gas to flow only from the top to the bottom of the breathing tube 3, preventing airflow from entering the transformer directly through the breathing tube 3 without being dried during inhalation. It is also preferable to install a one-way valve at the air inlet 31, ensuring that gas can only enter the breathing tube 3 from the air inlet 31 and cannot flow outwards from the breathing tube 3, preventing oil-containing gas from the transformer from entering the drying cylinder 6 during exhaust. Furthermore, a one-way valve is preferably installed in the series air passage 51, allowing gas to flow only from the outlet 62 towards the first inlet 61. This controls the airflow to flow unidirectionally between the multiple drying cylinders 6 connected in series, ensuring that the absorbent silica gel in each drying cylinder 6 is fully utilized and preventing waste of absorbent silica gel caused by all drying cylinders 6 absorbing moisture simultaneously.

[0039] Preferably, a dividing plate 64 with multiple through holes is provided inside the drying cylinder 6. The dividing plate 64 forms a gap with the bottom of the drying cylinder 6, and the first air inlet 61 is higher than the dividing plate 64. The dividing plate 64 is used to separate the moisture-absorbing silica gel inside the drying cylinder 6 from the second air inlet 63 at the bottom, thereby preventing the moisture-absorbing silica gel inside the drying cylinder 6 from blocking the second air inlet 63, and allowing the gas to diffuse better in the cross-section, increasing the contact between the gas and the moisture-absorbing silica gel, and improving the dehumidification effect; at the same time, it also prevents the oil droplets splashed from the bursting of bubbles generated in the oil collecting cup 10 when the gas inside the transformer is discharged from the breather from contacting the moisture-absorbing silica gel and clogging the breather. The shape of the through holes of the dividing plate 64 can be circular, triangular, or quadrilateral; among them, the triangular shape is the most effective.

[0040] Preferably, a widening opening 32 is provided at the air inlet 31, and the width of the widening opening 32 is controlled to ensure that there is always one and only one branch airway 52 connected within the respirator. During normal operation of the respirator, such as... Figure 6 As shown, one branch airway 52 normally connects to the widened port 32 and the air inlet 31, enabling the respirator to function normally. However, when the respirator needs to replace the dryer cartridge 6, since the transformer may still be in a state requiring inhalation, directly stopping the breathing function or directly sending gas into the transformer without drying is a poor solution. This respirator, through the widened port 32, allows for easy replacement of the dryer cartridge 6. By rotating the chassis 4, the previous branch airway 52 separates from the widened port 32, and the next branch airway 52 immediately connects to it. Figure 8 As shown, gas can still enter the breathing tube 3 through the branch airway 52. ​​However, the series airway 51, which is directly exposed to the outside gas due to the removal of the drying cylinder 6, is still separated from the branch airway 52 by several drying cylinders 6. Therefore, the outside gas still needs to be dried by the drying cylinders 6 before entering the transformer. It can be seen that under this structure, the breathing function of this respirator can still be achieved normally and is completely unaffected even when the drying cylinders 6 are replaced.

[0041] Preferably, a first horizontal section 511 and a second horizontal section 512 are provided in the series airway 51. The first horizontal section 511 is lower than the second horizontal section 512. The first horizontal section 511 is connected to the outlet airway 62, and the second horizontal section 512 is connected to the first inlet airway 61. During the operation of the respirator, outside air is drawn into the drying cylinder 6 for dehumidification. When gas enters the series airway 51 of the partition 5 from the outlet airway 62 of the drying cylinder 6, the gas may carry a small amount of water vapor that has not been completely adsorbed. The first horizontal section 511 is at a lower position. If condensation occurs on the airway wall, the condensate will naturally accumulate in the lower first horizontal section 511 and will not flow upward into the higher second horizontal section 512 and the branch airway 52, nor will it enter the subsequent drying cylinder 6. This prevents condensate from flowing back into the drying cylinder 6 or into the breathing tube 3.

[0042] Additionally, when the gas flows out of the drying cylinder 6, it may carry trace amounts of hygroscopic silica dust or other small particles. The high-low section design makes the first horizontal section 511 a natural settling zone. Particles in the gas are more likely to settle in the lower first horizontal section 511 due to gravity during the flow, and are less likely to rise with the airflow to the second horizontal section 512, thereby reducing the possibility of particles entering the subsequent drying cylinder 6 or breathing tube 3.

[0043] Furthermore, if the series air passage 51 is a perfectly straight horizontal pipe, when the baffle 5 expands horizontally due to heat, the two ends of the pipe will push against the two adjacent drying cylinders 6 respectively. Since the drying cylinders 6 and the baffle 5 are rigidly connected by nuts with rubber rings, this horizontal compressive force will be directly transmitted to the connection, potentially causing deformation of the sealing rubber ring and loosening of the nut. The height difference between the first horizontal section 511 and the second horizontal section 512 actually forms a buffer zone in the vertical direction. When the baffle 5 expands horizontally due to heat, the horizontal elongation can be absorbed by the mutual cancellation of the vertical sections with different orientations and the partial angle change of the inclined transition section, rather than being rigidly transmitted to the connection at both ends.

[0044] Branch airway 52 is connected to the second horizontal section 512. When gas enters the breathing manifold 3 from the second horizontal section 512 of the series airway 51 through branch airway 52, branch airway 52 is in a higher position. If there is oil, water, or impurities at the bottom of the series airway 51, the higher-positioned branch airway 52 is less likely to draw in these liquid or solid substances, thus preventing oil, condensate, etc., from entering the breathing manifold 3 and the transformer interior.

[0045] To accommodate the unidirectional airflow among the multiple drying cylinders 6 connected in series, the chassis 4 must rotate only in one direction, opposite to the airflow direction among the drying cylinders 6. This ensures that the first drying cylinder 6 to absorb the most moisture is selected each time it is replaced. To achieve this unidirectional rotation requirement, a unidirectional rotation structure can be installed between the chassis 4 and the baffle plate 8.

[0046] The unidirectional rotation structure includes multiple V-shaped grooves 42 disposed on the chassis 4, with the multiple V-shaped grooves 42 arranged circumferentially at the center of the chassis 4; one side of the V-shaped groove 42 has a smaller inclination than the other side, and the side with the larger inclination faces the desired rotation direction of the chassis 4; it also includes a blocking member 33 disposed at the concave surface of the bottom of the breathing tube 3, one end of the blocking member 33 being hinged to the breathing tube 3, and the other end being fitted with the V-shaped groove 42, such as... Figures 13-14 As shown. There are many ways to ensure that the blocking component 33 fits snugly with the V-groove 42, such as... Figure 13As shown, a spring is installed between the blocking member 33 and the breathing tube 3, and the spring force keeps the blocking member 33 in constant contact with the V-groove 42; or as... Figure 14 A magnet is embedded in the V-shaped groove 42 of the chassis 4 shown, and the magnet attracts the blocking member 33 to stay in contact with the V-shaped groove 42.

[0047] In this structure, when the chassis 4 rotates in the desired direction, the blocking member 33 will slide on the side of the V-shaped groove 42 with a small inclination and encounter very little resistance; however, when the chassis 4 rotates in the opposite direction, the blocking member 33 will abut against the side of the V-shaped groove 42 with a large inclination and encounter great resistance or even get stuck directly, thus preventing the chassis 4 from rotating.

[0048] Preferably, an arc-shaped guide plate 21 is provided on one side of the slot in the outer casing 2, and this side is in the rotation direction of the chassis 4. Figure 9 As shown, the chassis 4 rotates counterclockwise, so the arc-shaped guide plate 21 is located on the right side of the diagram. When the baffle 7 is open, the outer side of the baffle 7 will adhere to the arc-shaped guide plate 21. As the chassis 4 rotates, the arc-shaped guide plate 21 will automatically close the baffle 7, thus eliminating the need for manual closing. The outer surface of the baffle 7 is preferably arc-shaped. This arc shape not only better conforms to the inner wall of the outer shell 2, improving stability, but also allows the arc-shaped guide plate 21 to close the baffle 7 more smoothly.

[0049] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely illustrative examples of this application and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from its scope. Thus, if such modifications and modifications fall within the scope of this application and its equivalents, this application intends to include such modifications and modifications.

Claims

1. A transformer breather that does not require disassembly, characterized in that, include: Mounting flange (1), fixed to the transformer; The outer casing (2) is fixed to the mounting flange (1) at the top and has slots on the side walls; Breathing tube (3) is installed inside the outer casing (2), with its top end connected to the inside of the transformer and its side end having an air inlet (31); The chassis (4) rotates at the bottom of the outer shell (2) and is provided with multiple connecting vents (41); Multiple partitions (5) are distributed circumferentially inside the outer shell (2) and their bottoms are fixed to the chassis (4); each partition (5) is provided with a series air passage (51) and a branch air passage (52) connected at one end to the series air passage (51); Multiple drying cylinders (6); each drying cylinder (6) is disposed between two adjacent partitions (5), with a first air inlet (61) provided at the bottom of one side, an air outlet (62) provided at the top of the other side, and a second air inlet (63) provided at the bottom; moisture-absorbing silica gel is placed inside the drying cylinder (6); The air outlet (62) of each of the drying cylinders (6) is connected to the first air inlet (61) of the adjacent drying cylinder (6) through the series air inlet (51), and the second air inlet (63) is connected to the connecting air hole (41). Multiple baffles (7), each of the baffles (7) is hinged at one end to a partition (5) for abutting against the drying cylinder (6); An air baffle (8) is installed at the bottom of the chassis (4) and is fixedly connected to the bottom end of the breathing tube (3); the air baffle (8) is provided with an internal connecting airway (81) and an internal and external connecting airway (82); A glass cylinder (9) is fixed to the bottom surface of the baffle plate (8); an oil seal with a through hole is provided at the bottom of the glass cylinder (9); An oil collection cup (10) is fixed to the bottom surface of the baffle plate (8) and covers the glass cylinder (9); The two ends of the internal connecting air passage (81) are respectively connected to the connecting air hole (41) and the glass cylinder (9); the two ends of the internal and external connecting air passage (82) are respectively connected to the oil collecting cup (10) and the outside.

2. The transformer breather without disassembly according to claim 1, characterized in that, A one-way valve is installed inside the breathing tube (3) below the air inlet (31) so that gas can only flow from the top to the bottom of the breathing tube (3); a one-way valve is installed at the air inlet (31) so that gas can only enter the breathing tube (3); a one-way valve is installed in the series airway (51) so that gas can only flow from the air outlet (62) toward the first air inlet (61).

3. The transformer breather without disassembly according to claim 1, characterized in that, The drying cylinder (6) is provided with a partition plate (64) with multiple through holes. The partition plate (64) forms a distance from the bottom of the drying cylinder (6). The first air inlet (61) is higher than the partition plate (64).

4. The non-disassembly transformer breather according to claim 1, characterized in that, An enlarged opening (32) is provided at the air inlet (31), and the enlarged opening (32) is always connected to one of the branch air passages (52).

5. The transformer breather without disassembly according to claim 1, characterized in that, The series air passage (51) is provided with a first horizontal section (511) and a second horizontal section (512). The first horizontal section (511) is lower than the second horizontal section (512). The first horizontal section (511) is connected to the air outlet (62), and the second horizontal section (512) is connected to the first air inlet (61).

6. The non-disassembly transformer breather according to claim 5, characterized in that, The branch airway (52) is connected to the second horizontal segment (512).

7. The transformer breather without disassembly according to claim 1, characterized in that, A one-way rotation structure is provided between the chassis (4) and the air baffle (8) so that the chassis (4) can only rotate in one direction; The unidirectional rotation structure includes a plurality of V-shaped grooves (42) disposed on the chassis (4), and the plurality of V-shaped grooves (42) are disposed circumferentially at the center of the chassis (4); the inclination of one side of the V-shaped groove (42) is smaller than that of the other side; It also includes a blocking member (33) disposed on the breathing tube (3), one end of the blocking member (33) being hinged to the breathing tube (3) and the other end being fitted to the V-groove (42).

8. The non-disassembly transformer breather according to claim 1, characterized in that, An arc-shaped guide plate (21) is provided on the slotted side of the outer shell (2).

9. The non-disassembly transformer breather according to claim 1, characterized in that, A connecting block is provided on one side of the adjacent partition (5) located at the center of the outer shell (2); a spring (11) is provided between the drying cylinder (6) and the connecting block.

10. A method for using a transformer breather that does not require disassembly, characterized in that, Using the non-disassembly transformer breather as described in any one of claims 1 to 9, the steps include: The color change of the moisture-absorbing silica gel in the drying cylinder (6) corresponding to the air intake position is detected. If the color is blue, the machine will work normally and continue to detect; if the color turns light red, an alarm signal will be issued. After receiving the alarm signal, the personnel first disconnect the dryer cylinder (6) at the air intake position from other components; then push the chassis (4) to rotate, so that the dryer cylinder (6) at the air intake position rotates to the slot of the outer shell (2); Personnel can remove the drying cylinder (6) by opening the baffle (7), replace the moisture-absorbing silica gel inside the drying cylinder (6) or the entire drying cylinder (6), reconnect the drying cylinder (6) to other components, close the baffle (7) again, and push the chassis (4) to rotate so that another drying cylinder (6) moves to the air intake position and the new drying cylinder (6) moves to the standby position.

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