Composite transformer

Abstract

The invention provides a combined type transformer, and belongs to the technical field of transformers, the combined type transformer comprises a transformer body and a respirator, the top of the respirator is provided with a switching assembly, the switching assembly comprises a connecting pipe, the interior of the connecting pipe is fixedly connected with a plugging ring, and the plugging ring is fixedly connected with the respirator. The top of the plugging ring is provided with a moving ring slidably connected with the inner wall of the connecting pipe, the inner side of the moving ring is fixedly connected with a plugging piece matched with the plugging ring, the top of the moving ring is provided with a fixed ring fixedly connected with the inner wall of the connecting pipe, and a first elastic piece is connected between the fixed ring and the plugging piece. When the plugging piece makes contact with the plugging ring, gas in the transformer body can be isolated from entering the respirator, the saturation rising speed of the silica gel desiccant can be effectively reduced, and the service cycle is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of transformer technology, and specifically relates to a composite transformer. Background Technology

[0002] Composite transformers represent a strategic upgrade from traditional transformers, integrating multiple functions into a comprehensive power conversion system. In oil-immersed transformers, the breather is an indispensable safety auxiliary component, its core function being "filtration and drying." During transformer operation, due to load and ambient temperature changes, the internal insulating oil undergoes thermal expansion and contraction: when the temperature rises, the oil expands, expelling excess gas through the breather; when the temperature drops, the oil contracts, creating negative pressure and drawing in external air through the breather. This "breathing" process achieves the exchange of gases between the inside and outside of the transformer.

[0003] For example, Chinese patent application number CN202410622426.4 discloses a composite transformer, including a transformer body and a breather body connected to the air inlet of the transformer body. The breather body includes a glass container, an oil cup, and a screw. The oil cup is installed at the bottom of the glass container, and the screw connects the glass container and the oil cup in series. The glass container includes a first glass cylinder, a second glass cylinder, and a third glass cylinder arranged axially in sequence. The glass container has the following states: First state: At this time, the first glass cylinder and the second glass cylinder are sealed together, and there is an axial gap between the second glass cylinder and the third glass cylinder. In the first state, the silica gel particles in the glass container will be discharged from the opening between the second glass cylinder and the third glass cylinder. Then, in the second state, new silica gel particles are put into the glass container from the opening between the first glass cylinder and the second glass cylinder. Although this invention is simple and convenient to replace silica gel particles and does not require multiple people to operate simultaneously, the following problems still exist.

[0004] During long-term operation, the silica gel desiccant inside the existing breather undergoes a color change from bottom to top due to continuous adsorption of external moisture, gradually reducing its drying performance and making it difficult to maintain the initial drying effect. To ensure the safe operation of the transformer, the color of the silica gel must be inspected regularly, and it must be removed and replaced promptly once the speed exceeds two-thirds. However, the removal and replacement work is strictly limited by weather conditions and must be carried out in dry, sunny weather to minimize the contact time between the transformer's interior and the external humid air, avoiding insulation dampness caused by excessive air humidity during replacement. This stringent requirement not only increases the difficulty of operation and maintenance scheduling but also significantly restricts actual operation. In addition, the internal temperature of the transformer rises during load operation, leading to an increase in the transformer oil temperature. High temperatures enhance the oil's ability to dissolve moisture. When the high-temperature transformer oil encounters cooler external air at the oil conservator, condensation easily occurs, increasing the humidity of the gas inside the oil conservator. When this humid gas is discharged through the breather, it further accelerates the saturation of the silica gel desiccant, shortening its effective service life and creating a vicious cycle.

[0005] Therefore, in order to solve the above problems, a composite transformer is needed. Summary of the Invention

[0006] The purpose of this invention is to provide a composite transformer that addresses the problems in the prior art, such as the harsh conditions for disassembling and replacing the desiccant in the respirator and the shortening of the service life of the silica gel desiccant by internal humid gas when the transformer is under load.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A composite transformer includes a transformer body and a breather. The top of the breather is provided with a transition assembly, which includes a connecting pipe. A sealing ring is fixedly connected inside the connecting pipe. The top of the sealing ring is provided with a movable ring that is slidably connected to the inner wall of the connecting pipe. A sealing element adapted to the sealing ring is fixedly connected to the inner side of the movable ring. The top of the movable ring is provided with a fixed ring that is fixedly connected to the inner wall of the connecting pipe. A first elastic element is connected between the fixed ring and the sealing element. When the sealing element contacts the sealing ring, it can prevent gas inside the transformer body from entering the breather.

[0008] Preferably, the movable ring divides the interior of the connecting pipe into a first chamber and a second chamber. The movable ring is provided with a plurality of evenly distributed first one-way valves inside. Gas entering the first chamber can enter the second chamber through the first one-way valves. An installation component is fixedly connected to the outer wall of the connecting pipe. The installation component is provided with a plurality of evenly distributed second one-way valves inside. Gas entering the second chamber can be discharged to the outside through the second one-way valves. An isolation ring for sealing the second one-way valves is fixedly connected to the top of the movable ring.

[0009] Preferably, when the transformer body draws in air, the first elastic element is in a contracted state, and the top of the isolation ring is in close contact with the fixed ring, thereby blocking the second one-way valve; at this time, the blocking element separates from the blocking ring, and the gas in the breather can enter the first chamber and enter the second chamber through the first one-way valve.

[0010] Preferably, when the transformer body exhales, the gas inside it enters the second chamber, pushing the moving ring toward the sealing ring and causing the isolation ring to move synchronously; at this time, the first elastic element is stretched, the sealing element contacts the sealing ring to achieve a seal, and the isolation ring releases the seal on the second one-way valve, allowing the gas in the second chamber to be discharged into the outside through the second one-way valve.

[0011] Preferably, the respirator includes a glass container, an air inlet pipe, a sealing oil film, an oil cup, and a top cover. The adapter assembly further includes a drive ring that is rotatably and sealingly connected to the top of the top cover. The top of the drive ring is rotatably and sealingly connected to the bottom of the connecting pipe. An installation rod is fixedly connected to the center of the bottom of the glass container. A first feeding impeller is rotatably connected to the installation rod. A connector is fixedly connected inside the drive ring. An adapter rod is connected between the connector and the first feeding impeller.

[0012] Preferably, the respirator is provided with a feeding assembly, which includes an adjusting member fixedly connected to the outer wall of the glass container. The adjusting member has two symmetrically arranged feeding ports, both of which are connected to the interior of the glass container. The adjusting member has a receiving cavity inside, and an electromagnet is provided at the center of the receiving cavity. The top and bottom of the electromagnet are provided with magnets that are slidably connected to the inner wall of the receiving cavity. Each feeding port has a groove inside that is connected to the receiving cavity. The inner wall of each groove is slidably connected with an isolation plate that is fixedly connected to the corresponding magnet. A second elastic member is connected between each magnet and the inner wall of the receiving cavity.

[0013] Preferably, the magnetic poles on the opposite side of each magnetic component and the electromagnet are arranged in the same manner. The outer wall of the adjusting component is provided with a control switch for controlling the on and off of the electromagnet. When the electromagnet is energized, it generates magnetic force, which can push the two magnetic components to move away from the electromagnet, squeeze the second elastic component, and allow the isolation plate to be fully inserted into the corresponding groove, thereby sealing the feed port. When the electromagnet is de-energized, the second elastic component can elastically reset, which can move the two magnetic components towards the electromagnet and make contact with the electromagnet, allowing the isolation plate to enter the receiving cavity and release the blockage of the feed port.

[0014] Preferably, the feeding assembly further includes a feeding bottle, the bottom of which is fixedly connected to a feeding pipe, the other end of which is connected to a feeding port near the top cover. A second feeding impeller is rotatably connected to the center of the bottom of the feeding bottle. A first sealing cap is threadedly connected to the bottle opening of the feeding bottle. A rotating component is rotatably connected to the top of the first sealing cap. A limiting groove is formed on the inner side of the rotating component. Two symmetrically arranged limiting components are fixedly connected inside the limiting groove. A drive rod is fixedly connected to the top of the second feeding impeller. Two symmetrically arranged snap-fit ​​components are fixedly connected to the top of the drive rod. When the first sealing cap is installed on the feeding bottle, both snap-fit ​​components are located inside the limiting groove.

[0015] Preferably, the feeding assembly further includes a feeding bottle, the top of which is fixedly connected to a feeding pipe, the other end of which is connected to the feeding port near the oil cup, and a second sealing cap is threadedly connected to the bottle mouth.

[0016] Preferably, the glass container is filled with silica gel desiccant, and both the feed pipe and the discharge pipe are inclined.

[0017] Compared with the prior art, the beneficial effects of the present invention are: This invention enables the replacement of silica gel desiccant under sealed conditions through the design of the feeding assembly. Simply controlling the electromagnet's on / off state via a control switch, combined with the coordinated operation of the first and second feeding impellers, allows for the discharge of old desiccant and the addition of new desiccant. The entire process requires no disassembly of the respirator, is unaffected by weather conditions, is convenient to operate, and offers high replacement efficiency.

[0018] This invention, through the design of the adapter component, achieves the functions of gas drying during inhalation and direct gas discharge during exhalation, effectively reducing the rate of increase in silica gel desiccant saturation, solving the problem of shortening the desiccant's service life due to internal humid gas in transformers during load operation, and improving system reliability and economy. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the respirator of the present invention; Figure 3 This is a schematic diagram of the structure of the adapter component of the present invention; Figure 4 This is a schematic diagram of the internal structure of the connecting tube of the present invention; Figure 5 This is a schematic diagram of the structure of the drive ring of the present invention; Figure 6 This is a schematic diagram of the internal structure of the glass container of the present invention; Figure 7 This is a schematic diagram of the feed bottle of the present invention; Figure 8 This is a schematic diagram of the feeding bottle of the present invention; Figure 9 This is a schematic diagram of the structure of the first sealing cap of the present invention; Figure 10 This is a schematic diagram of the internal structure of the adjusting component of the present invention.

[0020] In the diagram: 1. Transformer body; 2. Breather; 21. Glass container; 22. Air inlet pipe; 23. Oil sealing film; 24. Oil cup; 25. Top cover; 3. Adapter assembly; 31. Connecting pipe; 32. Sealing ring; 33. Moving ring; 34. Sealing component; 35. Fixed ring; 36. First elastic element; 37. First chamber; 38. Second chamber; 39. First check valve; 310. Mounting component; 311. Second check valve; 312. Isolation ring; 313. Drive ring; 314. Mounting rod; 315. First feed blade 316. Wheel; 317. Connector; 4. Adapter rod; 4. Feeding assembly; 41. Adjusting component; 42. Feeding port; 43. Receiving cavity; 44. Electromagnet; 45. Magnet component; 46. Slide groove; 47. Isolation plate; 48. Second elastic component; 49. Control switch; 5. Feed bottle; 51. Feeding pipe; 52. Second feeding impeller; 53. First sealing cover; 54. Rotating component; 55. Limiting groove; 56. Limiting component; 57. Drive rod; 58. Snap-fit ​​component; 6. Discharge bottle; 61. Discharge pipe; 62. Second sealing cover. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example 1

[0022] During long-term operation, the silica gel desiccant inside the existing respirator undergoes a color change from bottom to top due to continuous adsorption of external moisture, gradually reducing its drying performance and making it difficult to maintain the initial drying effect. To ensure the safe operation of the transformer, the color of the silica gel must be regularly inspected and observed, and it must be removed and replaced promptly once the speed exceeds two-thirds. However, the removal and replacement work is strictly limited by weather conditions and must be carried out in dry, sunny weather to minimize the contact time between the transformer's interior and external humid air, preventing insulation moisture absorption due to excessive air humidity during the replacement process. This stringent operational requirement not only increases the difficulty of operation and maintenance scheduling but also significantly restricts actual operation.

[0023] Please see Figures 1 to 3 The present invention provides the following technical solution: a composite transformer, including a transformer body 1 and a breather 2. The top of the breather 2 is provided with a transfer component 3. The transfer component 3 includes a connecting pipe 31. A sealing ring 32 is fixedly connected inside the connecting pipe 31. The top of the sealing ring 32 is provided with a movable ring 33 that is slidably connected to the inner wall of the connecting pipe 31. A sealing element 34 that is adapted to the sealing ring 32 is fixedly connected to the inner side of the movable ring 33. The top of the movable ring 33 is provided with a fixed ring 35 that is fixedly connected to the inner wall of the connecting pipe 31. A first elastic element 36 is connected between the fixed ring 35 and the sealing element 34. When the sealing element 34 contacts the sealing ring 32, it can prevent the gas inside the transformer body 1 from entering the breather 2.

[0024] Please see Figures 5 to 10 The respirator 2 includes a glass container 21, an air inlet pipe 22, an oil sealing film 23, an oil cup 24, and a top cover 25. The adapter assembly 3 also includes a drive ring 313 that is rotatably and sealed to the top of the top cover 25. The top of the drive ring 313 is rotatably and sealed to the bottom of the connecting pipe 31. An installation rod 314 is fixedly connected to the center of the bottom of the glass container 21. A first feeding impeller 315 is rotatably connected to the installation rod 314. A connector 316 is fixedly connected inside the drive ring 313. An adapter rod 317 is connected between the connector 316 and the first feeding impeller 315.

[0025] The respirator 2 is equipped with a feeding assembly 4, which includes an adjusting member 41 fixedly connected to the outer wall of the glass container 21. The adjusting member 41 has two symmetrically arranged feeding ports 42, both of which are connected to the inside of the glass container 21. The adjusting member 41 has a receiving cavity 43 inside, and an electromagnet 44 is provided at the center of the receiving cavity 43. The top and bottom of the electromagnet 44 are provided with magnets 45 that are slidably connected to the inner wall of the receiving cavity 43. Each feeding port 42 has a groove 46 that is connected to the receiving cavity 43. Each groove 46 has an isolation plate 47 that is slidably connected to the inner wall of the corresponding magnet 45. Each magnet 45 is connected to the inner wall of the receiving cavity 43 with a second elastic member 48.

[0026] Each magnet 45 has the same magnetic pole arrangement on the side opposite to the electromagnet 44. The outer wall of the adjusting member 41 is provided with a control switch 49 for controlling the on and off of the electromagnet 44. When the electromagnet 44 is energized, it generates magnetic force, which can push the two magnets 45 to move away from the electromagnet 44, squeeze the second elastic member 48, and allow the isolation plate 47 to be fully inserted into the corresponding slide groove 46, thereby blocking the feed port 42. When the electromagnet 44 is de-energized, the second elastic member 48 can elastically reset, allowing the two magnets 45 to move towards the electromagnet 44 and contact the electromagnet 44, allowing the isolation plate 47 to enter the receiving cavity 43 and release the blockage of the feed port 42.

[0027] Each magnet 45 has the same magnetic pole on the opposite side of the electromagnet 44. Since like poles repel each other, if the top of the electromagnet 44 is the N pole and the bottom is the S pole, then the bottom of the magnet 45 near the feed pipe 51 is the N pole, and the top of the magnet 45 near the discharge pipe 61 is the S pole. Conversely, if the top of the electromagnet 44 is the S pole and the bottom is the N pole, then the bottom of the magnet 45 near the feed pipe 51 is the S pole, and the top of the magnet 45 near the discharge pipe 61 is the N pole.

[0028] The feeding assembly 4 also includes a feeding bottle 5. The bottom of the feeding bottle 5 is fixedly connected to a feeding pipe 51. The other end of the feeding pipe 51 is connected to a feeding port 42 near the top cover 25. A second feeding impeller 52 is rotatably connected to the inner center of the bottom of the feeding bottle 5. A first sealing cap 53 is threadedly connected to the bottle mouth of the feeding bottle 5. A rotating component 54 is rotatably connected to the top of the first sealing cap 53. A limiting groove 55 is opened on the inner side of the rotating component 54. Two symmetrically arranged limiting components 56 are fixedly connected inside the limiting groove 55. A drive rod 57 is fixedly connected to the top of the second feeding impeller 52. Two symmetrically arranged snap-fit ​​components 58 are fixedly connected to the top of the drive rod 57. When the first sealing cap 53 is installed on the feeding bottle 5, both snap-fit ​​components 58 are located inside the limiting groove 55.

[0029] The feed bottle 5 is filled with silica gel desiccant for replacement. When the first sealing cap 53 is installed on the feed bottle 5, rotating the first sealing cap 53 will first make the limiting member 56 contact the snap-fit ​​member 58. Then, if the rotation continues, it will drive the drive rod 57 and the second feeding impeller 52 to rotate synchronously. The silica gel desiccant inside the feed bottle 5 can be sent into the feed pipe 51 through the second feeding impeller 52.

[0030] When the silica gel desiccant inside the feed bottle 5 is low, silica gel desiccant can be added to the feed bottle 5 by opening the first sealing cap 53.

[0031] The feeding assembly 4 also includes a feeding bottle 6, the top of which is fixedly connected to a feeding pipe 61, the other end of which is connected to a feeding port 42 near the oil cup 24, and a second sealing cap 62 is threadedly connected to the bottle mouth of the feeding bottle 6.

[0032] Rotating the drive ring 313 can drive the adapter rod 317 and the first feeding impeller 315 to rotate synchronously, and the first feeding impeller 315 can send the silica gel desiccant inside the glass container 21 into the feed pipe 61.

[0033] The glass container 21 is filled with silica gel desiccant. The feed pipe 51 and the discharge pipe 61 are both inclined to facilitate feeding.

[0034] The size of the chute 46 is smaller than the particle size of the silica gel desiccant. The purpose of this is to prevent the silica gel desiccant from entering the interior of the chute 46, so as to prevent silica gel particles from entering the chute 46 and causing blockage.

[0035] It should be noted that under normal operating conditions, the electromagnet 44 is energized, generating magnetic force that pushes the two magnetic components 45 away from the electromagnet 44, thereby compressing the second elastic component 48 and causing the isolation plate 47 to be fully inserted into the slide 46, sealing the two feed ports 42. This effectively isolates the glass container 21 from the feed bottle 5 and the discharge bottle 6, preventing gas entering the breather 2 from entering the feed bottle 5 and affecting the subsequent use of the silica gel desiccant. It also prevents gas from entering the discharge bottle 6, ensuring that the gas intake efficiency of the transformer body 1 is not disturbed.

[0036] When the silica gel desiccant needs to be replaced, the operator de-energizes the electromagnet 44 via control switch 49. At this time, the second elastic element 48 elastically resets, pushing the two magnetic elements 45 into contact with the electromagnet 44, and the isolation plate 47 retracts into the receiving cavity 43, no longer blocking the feed port 42. Subsequently, the operator can first rotate the drive ring 313, which drives the adapter rod 317 and the first feeding impeller 315 to rotate synchronously, discharging the old silica gel desiccant in the glass container 21 into the feeding bottle 6 through the feeding pipe 61. Under the action of gravity, the old desiccant falls into the feeding bottle 6 along the feeding pipe 61. Next, the operator unscrews the first sealing cap 53 on the feeding bottle 5, and drives the drive rod 57 to rotate through the cooperation of the rotating part 54 and the limiting groove 55, driving the second feeding impeller 52 to rotate, and conveying the new silica gel desiccant in the feeding bottle 5 to the top of the glass container 21 through the feeding pipe 51, thereby completing the replacement of the silica gel desiccant. The entire replacement process does not require disassembling the respirator 2, is not limited by weather conditions, is easy to operate, and is conducive to improving work efficiency.

[0037] During the replacement process, the first feeding impeller 315 will preferentially discharge the silica gel desiccant at the bottom of the glass container 21. The operator needs to observe the amount of color-changing silica gel desiccant inside the glass container 21. After most of the color-changing desiccant has entered the discharge bottle 6, the electromagnet 44 is re-energized via the control switch 49, driving the isolation plate 47 to seal the feeding port 42 again, restoring the isolation between the glass container 21 and the feeding bottle 5 and discharge bottle 6. Since not all the silica gel desiccant inside the glass container 21 is replaced, residual, uncolored silica gel desiccant can be retained for reuse, improving material utilization.

[0038] In summary, this invention, through the design of the feeding assembly 4, enables the replacement of silica gel desiccant under sealed conditions. By simply controlling the electromagnet 44 to switch on and off via the control switch 49, and coordinating the operation of the first feeding impeller 315 and the second feeding impeller 52, the old desiccant can be discharged and the new desiccant added. The entire process requires no disassembly of the respirator 2, is unaffected by weather conditions, is convenient to operate, and boasts high replacement efficiency. Example 2

[0039] Based on the above embodiments, the internal temperature of the transformer rises during load operation, leading to an increase in the transformer oil temperature. High temperatures enhance the oil's ability to dissolve moisture. When the high-temperature transformer oil encounters cooler external air at the oil conservator, condensation easily occurs, increasing the humidity of the gas inside the conservator. When this humid gas is expelled through the breather, it further accelerates the saturation of the silica gel desiccant, shortening its effective service life and creating a vicious cycle.

[0040] Please see Figures 2 to 4The moving ring 33 divides the interior of the connecting pipe 31 into a first chamber 37 and a second chamber 38. The interior of the moving ring 33 is provided with a plurality of evenly distributed first check valves 39. The outer wall of the connecting pipe 31 is fixedly connected to a mounting member 310. The interior of the mounting member 310 is provided with a plurality of evenly distributed second check valves 311. The top of the moving ring 33 is fixedly connected to an isolation ring 312 for blocking the second check valves 311.

[0041] When the transformer body 1 draws in air, the first elastic element 36 is in a contracted state, and the top of the isolation ring 312 is in close contact with the fixed ring 35, thereby blocking the second one-way valve 311; at this time, the sealing element 34 separates from the sealing ring 32, and the gas in the breather 2 can enter the first chamber 37 and enter the second chamber 38 through the first one-way valve 39.

[0042] The first elastic element 36 is in a contracted state, that is, stretched to a certain extent. The purpose is to ensure that the isolation ring 312 and the fixed ring 35 are in close contact through the contraction force of the first elastic element 36, so as to prevent the gas inside the first chamber 37 from entering the second chamber 38 through the first one-way valve 39 and then being discharged directly from the second one-way valve 311.

[0043] When the transformer body 1 exhales, the gas inside it enters the second chamber 38, pushing the moving ring 33 toward the sealing ring 32 and causing the isolation ring 312 to move synchronously. At this time, the first elastic element 36 is further stretched, the sealing element 34 contacts the sealing ring 32 to achieve a seal, and the isolation ring 312 releases the seal on the second one-way valve 311, allowing the gas in the second chamber 38 to be discharged into the outside through the second one-way valve 311.

[0044] It should be noted that during transformer operation, the internal gas undergoes a "breathing" effect due to temperature changes. When the transformer draws in air, the first elastic element 36 is in a contracted state, and the top of the isolation ring 312 is in close contact with the fixed ring 35, thereby sealing the second one-way valve 311. At this time, the sealing element 34 separates from the sealing ring 32, and the gas in the breather 2 can enter the first chamber 37 and then enter the second chamber 38 through the first one-way valve 39, and then enter the transformer body 1. The gas flows through the breather 2 and is dried before entering the transformer, ensuring that the internal insulation is not damp. When the transformer exhales air, the internal pressure increases, and the gas pushes the moving ring 33 towards the sealing ring 32, stretching the first elastic element 36. The sealing element 34 and the sealing ring 32 are in close contact, forming a seal. At the same time, the isolation ring 312 moves with the moving ring 33, detaching from the sealing of the second one-way valve 311, allowing the humid gas to be directly discharged to the outside through the second one-way valve 311, avoiding the repeated passage of humid gas through the breather 2, reducing the adsorption load of the silica gel desiccant, and extending its service life.

[0045] In summary, by setting up the adapter component 3, this invention achieves the functions of gas drying during inhalation and direct gas discharge during exhalation, effectively reducing the rate of increase in silica gel desiccant saturation, solving the problem of shortening the desiccant's service life due to internal humid gas in the transformer during load operation, and improving system reliability and economy.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite transformer, comprising a transformer body and a breather, characterized in that: The respirator is equipped with a conversion assembly at its top. The conversion assembly includes a connecting tube, and a sealing ring is fixedly connected inside the connecting tube. The top of the sealing ring is equipped with a movable ring that is slidably connected to the inner wall of the connecting tube. A sealing element that matches the sealing ring is fixedly connected to the inner side of the movable ring. A fixed ring that is fixedly connected to the inner wall of the connecting tube is located at the top of the movable ring. A first elastic element is connected between the fixed ring and the sealing element. When the sealing element contacts the sealing ring, it can prevent gas inside the transformer body from entering the respirator.

2. The composite transformer according to claim 1, characterized in that: The movable ring divides the interior of the connecting pipe into a first chamber and a second chamber. The interior of the movable ring is provided with a plurality of evenly distributed first one-way valves. An installation component is fixedly connected to the outer wall of the connecting pipe. The installation component is provided with a plurality of evenly distributed second one-way valves. An isolation ring for sealing the second one-way valves is fixedly connected to the top of the movable ring.

3. The composite transformer according to claim 2, characterized in that: When the transformer body draws in air, the first elastic element is in a contracted state, and the top of the isolation ring is in close contact with the fixed ring, thereby blocking the second one-way valve. At this time, the blocking element separates from the blocking ring, and the gas in the breather can enter the first chamber and then enter the second chamber through the first one-way valve.

4. The composite transformer according to claim 3, characterized in that: When the transformer body exhales, the gas inside it enters the second chamber, pushing the moving ring toward the sealing ring and causing the isolation ring to move synchronously. At this time, the first elastic element is stretched, the sealing element contacts the sealing ring to achieve a seal, and the isolation ring releases the seal on the second one-way valve, allowing the gas in the second chamber to be discharged into the outside through the second one-way valve.

5. The composite transformer according to claim 4, characterized in that: The respirator includes a glass container, an air inlet pipe, a sealing oil film, an oil cup, and a top cover. The adapter assembly also includes a drive ring that is rotatably and sealingly connected to the top of the top cover. The top of the drive ring is rotatably and sealingly connected to the bottom of the connecting pipe. An installation rod is fixedly connected to the center of the bottom of the glass container. A first feeding impeller is rotatably connected to the installation rod. A connector is fixedly connected inside the drive ring. An adapter rod is connected between the connector and the first feeding impeller.

6. The composite transformer according to claim 1, characterized in that: The respirator is equipped with a feeding assembly, which includes an adjusting component fixedly connected to the outer wall of the glass container. The adjusting component has two symmetrically arranged feeding ports, both of which are connected to the interior of the glass container. The adjusting component has a receiving cavity inside, and an electromagnet is provided at the center of the receiving cavity. The top and bottom of the electromagnet are provided with magnets that are slidably connected to the inner wall of the receiving cavity. Each feeding port has a groove inside that is connected to the receiving cavity. The inner wall of each groove is slidably connected with an isolation plate that is fixedly connected to the corresponding magnet. A second elastic element is connected between each magnet and the inner wall of the receiving cavity.

7. The composite transformer according to claim 6, characterized in that: Each of the magnetic components has the same magnetic pole arrangement on the side opposite to the electromagnet. The outer wall of the adjusting component is provided with a control switch for controlling the on and off of the electromagnet. When the electromagnet is energized, it generates magnetic force, which can push the two magnetic components to move away from the electromagnet, compress the second elastic member, and allow the isolation plate to be fully inserted into the corresponding slide groove, thereby blocking the feed port. When the electromagnet is de-energized, the second elastic member can elastically reset, allowing the two magnetic components to move towards the electromagnet and contact it, allowing the isolation plate to enter the receiving cavity and release the blockage of the feed port.

8. The composite transformer according to claim 7, characterized in that: The feeding assembly also includes a feeding bottle, the bottom of which is fixedly connected to a feeding pipe. The other end of the feeding pipe is connected to the feeding port near the top cover. A second feeding impeller is rotatably connected to the center of the bottom of the feeding bottle. A first sealing cap is threadedly connected to the bottle mouth of the feeding bottle. A rotating component is rotatably connected to the top of the first sealing cap. A limiting groove is formed on the inner side of the rotating component. Two symmetrically arranged limiting components are fixedly connected inside the limiting groove. A drive rod is fixedly connected to the top of the second feeding impeller. Two symmetrically arranged snap-fit ​​components are fixedly connected to the top of the drive rod. When the first sealing cap is installed on the feeding bottle, both snap-fit ​​components are located inside the limiting groove.

9. The composite transformer according to claim 8, characterized in that: The feeding assembly also includes a feeding bottle, the top of which is fixedly connected to a feeding pipe, the other end of which is connected to the feeding port near the oil cup, and a second sealing cap is threadedly connected to the bottle mouth.

10. The composite transformer according to claim 9, characterized in that: The glass container is filled with silica gel desiccant, and both the feed pipe and the discharge pipe are inclined.

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