A smart distribution transformer

Abstract

The present invention relates to the technical field of transformers, and discloses a smart distribution transformer, including a transformer body, an oil pillow, a connecting pipe, a respirator and an overflow pipe, both sides of the inner wall of the oil pillow are fixedly connected with support bars, an air bag and an arc plate are connected between the two support bars, and the arc plate is located above the air bag, the upper surface of the arc plate is penetrated with a plurality of air inlet holes, the inside of the air inlet holes are fixedly connected with a one-way valve, the upper surface of the arc plate is connected with two groups of protective components, the other ends of the two groups of protective components are simultaneously connected with a baffle, and the upper surfaces of the baffle and the arc plate are penetrated with a plurality of air outlet holes. This kind of smart distribution transformer, by setting an air bag between the two support bars inside the oil pillow, and separating the transformer oil from the upper connecting pipe and the respirator, so that even if external water vapor and dust enter the oil pillow, they only adhere to the outside of the air bag, and in the later cleaning, only the outside of the air bag needs to be cleaned, which is convenient and quick.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and in particular to a smart distribution transformer. Background Art

[0002] Smart distribution transformer refers to a new type of power equipment that combines modern information technology with the functions of traditional distribution transformers. It not only has the basic voltage conversion function of ordinary distribution transformers, but also integrates automation and intelligent technologies, such as data acquisition, remote monitoring, fault diagnosis, self-regulation and optimized operation. The most common smart distribution transformer at present is the oil-immersed distribution transformer.

[0003] At present, the patent with the announcement number CN221596108U discloses an oil-immersed transformer, which specifically relates to the technical field of transformers, including a transformer body, whose outer end face is provided with a heat sink, the outer side of the center of the lower end of the transformer body is provided with an installation adjustment member, the middle part of the upper end of the installation adjustment member is provided with a concave slide groove, the upper end of the concave slide groove is provided with a support adjustment plate, the end face of the support adjustment plate is provided with a support adjustment groove, and the middle end face of the support adjustment groove is provided with a bidirectional screw rod. When the oil-immersed transformer is actually used, by adjusting the corresponding setting state of the support connecting rod, the transformer support plate, the second support plate, the fixed rotating block, the bidirectional screw rod and the support adjustment slide plate, it is convenient to drive the support adjustment slide plate to move when the bidirectional screw rod rotates, and in the corresponding matching state of the second support plate and the first support plate, the height of the transformer support plate can be adjusted, so that the transformer support plate can support the transformer.

[0004] However, the above oil-immersed transformer still has the following problems in actual use:

[0005] Oil-immersed transformers are equipped with an oil pillow (also called an oil conservator), which is used to store excess transformer oil to adapt to changes in oil volume when the oil temperature changes. A breather (also called a dehumidifier) ​​is usually set at the top of the oil pillow to adjust the air pressure inside the oil pillow and absorb moisture and impurities carried by the air entering the oil pillow.

[0006] However, during daily use of the respirator, the silica gel desiccant inside it will become saturated, reducing its own absorption effect. As a result, some water vapor and dust will pass through the desiccant and enter the airbag inside the oil pillow. At this time, the moisture and dust that enter the airbag will stick to the inner wall of the airbag, thereby increasing the aging rate of the airbag and shortening the service life of the airbag.

[0007] The airbag in the existing oil pillow is usually an integral body, which is immersed in the transformer oil inside the oil pillow. Even if the transformer and the oil pillow are regularly inspected and repaired, it is not convenient to clean the inside of the airbag, which is very inconvenient. Summary of the invention

[0008] In view of the deficiencies in the prior art, the present invention provides a smart distribution transformer to solve the problem that moisture and dust are easily introduced into the oil pillow of the current transformer body and the inside of the oil pillow is not convenient to clean.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a smart distribution transformer, comprising a transformer body, an oil pillow installed on one side of the transformer body, a connecting pipe installed on the oil pillow, a respirator installed at the other end of the connecting pipe, and an overflow pipe installed between the transformer body and the oil pillow, both sides of the inner wall of the oil pillow are fixedly connected with support bars, an air bag and an arc plate are connected between the two support bars, and the arc plate is located above the air bag, a plurality of air inlet holes are opened through the upper surface of the arc plate, and the inside of the air inlet holes are fixedly connected with a one-way valve, and the upper surface of the arc plate is connected with two sets of protective components, and the two sets The other end of the protective component is also connected to a baffle, and the upper surfaces of the baffle and the arc plate are penetrated with a plurality of air outlet holes, and the plurality of air outlet holes on the baffle and the arc plate are evenly divided into two groups and are respectively located on both sides of the air inlet hole, and sealing components are connected to the plurality of air outlet holes, and a cleaning component is connected between two sealing components located on both sides of the same air inlet hole, and two scraping strips are connected to both ends of the plurality of cleaning components at the same time, and the two scraping strips are respectively abutted against the sides of the two groups of protective components away from each other, and drainage mechanisms are connected to both sides of the inner wall of the oil pillow, and the other ends of the two drainage mechanisms pass through the inside of the oil pillow to the outside of the oil pillow.

[0010] Furthermore, the protective component includes a dustproof net, two clamping strips and four limit strips, the two clamping strips are respectively fixedly connected to the upper and lower sides of the dustproof net, wherein the bottom surfaces of the two limit strips are fixedly connected to the upper surface of the arc plate, and the upper surfaces of the other two limit strips are fixedly connected to the bottom surface of the baffle, the two clamping strips are respectively located between the two limit strips of the upper and lower groups, and the side walls of the clamping strips are slidably connected to the side walls of the limit strips, and the side walls of the scraper strips are against the side walls of the dustproof net.

[0011] Furthermore, the sealing assembly includes a vent pipe, a piston and a tension spring. The outer walls of the upper and lower ends of the vent pipe are respectively fixedly connected to the inner walls of the baffle and the air outlet of the arc plate. A spring cavity is provided at the upper end of the vent pipe, and a vent hole is provided at the lower end of the vent pipe. The spring cavity and the vent hole are internally connected. One end of the tension spring is fixedly connected to the inner wall of the spring cavity close to the vent hole, the other end of the tension spring is fixedly connected to the lower end of the piston, the side wall of the piston is slidably connected to the inner wall of the spring cavity, and the upper end of the piston is connected to the end of the cleaning assembly away from the scraper strip.

[0012] Furthermore, the cleaning assembly includes a connecting plate and two connecting rods, the bottom surface of the connecting plate is fixedly connected to the upper end of the piston, the two ends of the connecting plate are respectively fixedly connected to the upper ends of the two connecting rods, and the lower ends of the two connecting rods are respectively fixedly connected to the upper surfaces of the two scrapers.

[0013] Furthermore, an auxiliary rod is fixedly connected to the bottom surface of the piston, the lower end of the auxiliary rod passes through the spring cavity and the vent, and is fixedly connected to an anti-slip sheet, the diameter of the anti-slip sheet is larger than the diameter of the vent, the diameter of the auxiliary rod is smaller than the diameter of the vent, and the length of the auxiliary rod passing through one end of the vent is not less than the length of the piston.

[0014] Furthermore, a mounting flange is sleeved on and fixedly connected to the outer wall of one end of the oil pillow, and the mounting flange is fastened to a sealing flange by bolts. A sealing plate No. 1 is fixedly connected to one side of the sealing flange close to the mounting flange, and the other side of the sealing plate No. 1 is abutted against two support bars, an arc plate and one end of the baffle.

[0015] Furthermore, a semicircular opening is penetrated through the side wall of the sealing flange, and a semicircular plate is slidably connected to the inner wall of the semicircular opening. A No. 2 sealing plate is fixedly connected to the side of the semicircular plate close to the mounting flange, and the other side of the No. 2 sealing plate is abutted against one end of the two support bars, and a portion of the upper end of the No. 2 sealing plate protrudes, and the protruding portion matches and abuts against the lower end of the No. 1 sealing plate.

[0016] Furthermore, the inner wall of the oil pillow away from the mounting flange and the side of the No. 1 sealing plate close to the oil pillow are fixedly connected with a hollow clamping plate and a sealing strip. Both ends of the baffle are provided with clamping openings, and the inner walls of the two clamping openings are respectively slidably connected with the inner walls of the two hollow clamping plates. Both ends of the arc plate are provided with sealing openings, and the inner walls of the two sealing openings are respectively slidably connected with the outer walls of the two sealing strips.

[0017] Furthermore, a No. 2 slide bar is fixedly connected to both sides of the upper end of the airbag, a No. 1 slide bar is fixedly connected to both sides of the arc plate, two slide grooves are provided on the adjacent sides of the two support bars, and the two No. 1 slide bars and the two No. 2 slide bars are slidably connected to the inner walls of the four slide grooves respectively.

[0018] Furthermore, the drainage mechanism includes a hanger, a water level sensor, a drain pipe and a one-way solenoid valve, the upper end of the hanger is fixedly connected to the inner wall of the oil pillow, the lower end of the hanger is fixedly connected to the outer wall of the water level sensor, one end of the drain pipe is fixedly connected to the outer wall of the oil pillow, the other end of the drain pipe is located outside the oil pillow, the one-way solenoid valve is located inside the drain pipe, and the oil pillow, the drain pipe and the one-way solenoid valve are internally connected.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This type of smart distribution transformer sets an air bag between the two support bars inside the oil pillow and separates the transformer oil from the connecting pipe and breather above. In this way, even if external water vapor and dust enter the oil pillow, they will only stick to the outside of the air bag. When cleaning later, you only need to clean the outside of the air bag, which is convenient and quick.

[0021] This type of smart distribution transformer fills transformer oil inside the airbag. In this way, when the surface of the airbag is cleaned, the transformer oil originally in the oil pillow does not need to be discharged. As long as the airbag is not damaged, this part of the transformer oil can continue to be stored in the airbag, thereby achieving the effect of saving fuel.

[0022] This type of smart distribution transformer sets an arc plate and a baffle above the airbag, and sets a protective component on the arc plate and the baffle. When external dust enters the oil pillow through the respirator, this part of the dust will be protected twice by the protective component, thereby reducing the purpose of adhesion to the airbag, thereby increasing the service life of the airbag.

[0023] This type of smart distribution transformer, by arranging a sealing component, a cleaning component and a scraper in the air outlet hole between the arc plate and the baffle, can wipe the dust adhering to the surface of the protective component during the thermal expansion and contraction of the airbag, thereby reducing the blockage rate of the protective component and improving the filtering effect and filtering time of the protective component.

[0024] This type of smart distribution transformer connects the airbag and the arc plate to the two support bars inside the oil pillow, which makes it easier to operate when the airbag and the arc plate need to be replaced.

[0025] This kind of intelligent distribution transformer sets the arc plate and baffle plate in a parallel state, so that the arc plate, baffle plate and other components can be fixed in the oil pillow at the same time by simply connecting the sealing flange with the mounting flange, which is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall appearance of the present invention;

[0027] Figure 2 A schematic diagram of the overall appearance of the present invention from another viewing angle;

[0028] Figure 3 Schematic diagram of the internal structure of the oil pillow in the present invention;

[0029] Figure 4 It is a cross-sectional schematic diagram of the oil pillow in the present invention;

[0030] Figure 5 It is a detailed connection diagram of the semicircular plate, the second sealing plate and the airbag in the present invention;

[0031] Figure 6 It is a detailed connection diagram of the arc plate, baffle plate, sealing flange and other components in the present invention;

[0032] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of point A in the middle;

[0033] Figure 8 For the present invention Figure 6 Another perspective diagram of each component in the embodiment;

[0034] Fig. 9 It is a detailed connection diagram of the sealing flange, the No. 1 sealing plate and the hollow card plate in the present invention;

[0035] Fig.10 It is an enlarged schematic diagram of the end structure of the baffle in the present invention;

[0036] Fig.11 It is a detailed connection diagram of the baffle, sealing assembly and cleaning assembly in the present invention;

[0037] Fig.12 For the present invention Fig.11 Another perspective diagram of each component in the embodiment;

[0038] Fig.13 It is a detailed connection diagram of the baffle, vent pipe, sealing assembly and other components in the present invention.

[0039] In the figure: 1. Transformer body; 2. Oil pillow; 3. Breathing device; 4. Connecting pipe; 5. Overflow pipe; 6. Mounting flange; 7. Sealing flange; 8. Drain pipe; 9. One-way solenoid valve; 10. Semicircular plate; 11. No. 1 sealing plate; 12. No. 2 sealing plate; 13. Support bar; 14. No. 1 sliding bar; 15. Arc plate; 16. Baffle; 17. Connecting plate; 18. Connecting rod; 19. Scraper; 20. Dust screen; 21. Hollow Pallet; 22. Sealing strip; 23. No. 2 slide bar; 24. Air bag; 25. Slide groove; 26. Hanging rod; 27. Water level sensor; 28. Semicircular opening; 29. ​​Air inlet; 30. One-way valve; 31. Air outlet; 32. Auxiliary rod; 33. Anti-slip sheet; 34. Sealing mouth; 35. Limiting strip; 36. Card strip; 37. Bayonet; 38. Ventilation pipe; 39. Piston; 40. Tension spring; 41. Spring chamber; 42. Ventilation hole. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0041] See also Figure 1-Figure 13 A smart distribution transformer comprises a transformer body 1, an oil pillow 2 installed on one side of the transformer body 1, a connecting pipe 4 installed on the oil pillow 2, a respirator 3 installed at the other end of the connecting pipe 4, and an overflow pipe 5 installed between the transformer body 1 and the oil pillow 2. Support bars 13 are fixedly connected to both sides of the inner wall of the oil pillow 2, an air bag 24 and an arc plate 15 are connected between the two support bars 13, and the arc plate 15 is located above the air bag 24. A plurality of air inlet holes 29 are formed on the upper surface of the arc plate 15, and a one-way valve 30 is fixedly connected to the inside of the air inlet holes 29. Two sets of protective components are connected to the upper surface of the arc plate 15, and the other ends of the two sets of protective components are connected to the inner wall of the oil pillow 2. The ends are also connected to a baffle 16, and the upper surfaces of the baffle 16 and the arc plate 15 are penetrated with a plurality of air outlet holes 31, and the plurality of air outlet holes 31 on the baffle 16 and the arc plate 15 are evenly divided into two groups, and are respectively located on both sides of the air inlet hole 29, and a sealing component is connected to each of the plurality of air outlet holes 31, and a cleaning component is connected between two sealing components located on both sides of the same air inlet hole 29, and two scraping strips 19 are simultaneously connected to both ends of the plurality of cleaning components, and the two scraping strips 19 are respectively abutted against the sides of the two groups of protective components away from each other, and drainage mechanisms are connected to both sides of the inner wall of the oil pillow 2, and the other ends of the two drainage mechanisms penetrate the interior of the oil pillow 2 to the outside of the oil pillow 2.

[0042] The intelligent distribution transformer in the present invention is similar to the existing transformer structure, such as an oil-immersed transformer disclosed in the patent with announcement number CN221596108U. Figures 1 to 13 As shown, the smart distribution transformer in the present invention can be used in the following steps:

[0043] The transformer body 1, oil pillow 2, breather 3 and other components mentioned above are installed and debugged according to regulations and then put into use.

[0044] During use, the transformer oil in the transformer body 1 will be transported to the air bag 24 in the oil pillow 2 along the overflow pipe 5 due to thermal expansion and contraction, or the transformer oil will be sucked back into the transformer body 1 from the air bag 24 in the oil pillow 2.

[0045] During the back-and-forth movement of the transformer oil, the airbag 24 inside the oil pillow 2 will undergo a shape change of expansion and contraction.

[0046] When the airbag 24 becomes larger (the transformer oil inside the transformer body 1 enters the oil pillow 2 due to the heat, squeezing the airbag 24 and causing the airbag 24 to become larger), the space between the airbag 24 and the arc plate 15 will be compressed.

[0047] When the space between the airbag 24 and the curved plate 15 becomes smaller, the air originally located in this part will passively move from the sealing component to the space between the curved plate 15 and the baffle 16, and then enter the oil pillow 2 from the protective components at both ends of the baffle 16, and then enter the respirator 3 from the connecting pipe 4 above the oil pillow 2, and finally be ejected from the respirator 3 to the outside.

[0048] While the sealing component is discharging the gas, the cleaning component will be pushed outward from the air outlet 31 in the baffle 16, and while pushing outward, the scraper strip 19 that was originally against the protective component will passively slide on the surface of the protective component and scrape off some dust adhering to the surface, thereby reducing the probability of blockage.

[0049] On the contrary, when the temperature of the transformer oil inside the transformer body 1 decreases, the transformer oil inside the oil pillow 2 will return to the inside of the transformer body 1 along the overflow pipe 5. At this time, the air pressure inside the oil pillow 2 decreases, and then the airbag 24 will bend and deform downward.

[0050] When the airbag 24 bends and deforms downward, because the space between the airbag 24 and the arc plate 15 becomes larger, the sealing component will automatically block the air outlet 31 and push the cleaning component downward, so that it can move from the upper end of the protective component to the lower end, so that the protective component can be cleaned on one side again.

[0051] Because the sealing assembly blocks the air outlet 31, external air can only enter the space between the airbag 24 and the arc plate 15 through the one-way valve 30 of the air inlet 29, thereby filling this part of the air pressure change.

[0052] The expansion and contraction of gas inside the oil pillow 2 will draw some water vapor and dust from the external environment into the oil pillow 2 (although there is a respirator 3 for filtering, some of it will still enter the interior, which cannot be completely avoided). At this time, because the two ends of the arc plate 15 are lower than the middle part, the water vapor and dust that enter the oil pillow 2 will be blocked by the protective component first. Even if some water vapor and dust still pass through the one-way valve 30 and enter the space between the airbag 24 and the arc plate 15, it is located on the outer wall of the airbag 24, not the inner wall of the airbag 24. At this time, during regular maintenance, the outer wall of the airbag 24 can also be wiped and cleaned more conveniently.

[0053] Special mention should be made here:

[0054] When water vapor in the external environment enters the oil pillow 2, it is very likely to liquefy after coming into contact with relatively cool materials such as the baffle 16 and the curved plate 15 inside the oil pillow 2. At this time, the liquefied water droplets will be collected at both ends of the curved plate 15 and monitored in real time by the drainage mechanism. If it exceeds the set standard, this part of the liquid will be immediately discharged to the outside of the oil pillow 2.

[0055] As a preferred solution of the present invention, the protective component includes a dustproof net 20, two clamping strips 36 and four limit strips 35, the two clamping strips 36 are respectively fixedly connected to the upper and lower sides of the dustproof net 20, wherein the bottom surfaces of the two limit strips 35 are fixedly connected to the upper surface of the arc plate 15, and the upper surfaces of the other two limit strips 35 are fixedly connected to the bottom surface of the baffle 16, the two clamping strips 36 are respectively located between the two limit strips 35 of the upper and lower groups, and the side walls of the clamping strips 36 are slidably connected to the side walls of the limit strips 35, and the side walls of the scraper strips 19 are against the side walls of the dustproof net 20.

[0056] More specifically, during installation, the two clips 36 at both ends of the dustproof net 20 only need to be inserted between the two sets of limit strips 35 , so that a certain degree of dust protection can be achieved through the dustproof net 20 .

[0057] It should be noted that a sealing ring is provided at the connection between the clamping strip 36 and the limiting strip 35 , so as to limit water vapor or dust from passing through the dustproof net 20 , thereby increasing the protective effect.

[0058] As a preferred embodiment of the present invention, the sealing assembly includes a vent pipe 38, a piston 39 and a tension spring 40. The outer walls of the upper and lower ends of the vent pipe 38 are fixedly connected to the inner walls of the air outlet 31 of the baffle 16 and the arc plate 15 respectively. A spring cavity 41 is provided at the upper end of the vent pipe 38, and a vent hole 42 is provided at the lower end of the vent pipe 38. The spring cavity 41 and the vent hole 42 are internally connected. One end of the tension spring 40 is fixedly connected to the inner wall of the spring cavity 41 close to the vent hole 42, and the other end of the tension spring 40 is fixedly connected to the lower end of the piston 39. The side wall of the piston 39 is slidably connected to the inner wall of the spring cavity 41, and the upper end of the piston 39 is connected to the end of the cleaning assembly away from the scraper strip 19.

[0059] More specifically, when the airbag 24 is in a contracted state, the piston 39 has no air pressure to push it outward. Therefore, under the action of the tension spring 40, the piston 39 completely blocks and seals the vent 38 in the air outlet 31 of the baffle 16 and the arc plate 15. Therefore, the air in the external environment can only enter through the air inlet 29 and the one-way valve 30.

[0060] On the contrary, when the airbag 24 begins to expand gradually, due to the one-way valve 30, the gas can only overcome the elastic force of the tension spring 40 and the friction between the piston 39 and the spring chamber 41, and forcibly push the piston 39 out from the spring chamber 41. During the process of the piston 39 pushing up, the cleaning component on the upper end of the piston 39 will rise together, and during the rising period, the dust adhering to the surface of the dustproof net 20 will be scraped off by the scraper 19. After the piston 39 completely leaves the spring chamber 41, because there is no seal between the piston 39 and the spring chamber 41, the gas can overflow from the opening between the two, and the piston 39 will not continue to move up, and at the same time, the scraper 19 just moves to the top of the dustproof net 20.

[0061] When the airbag 24 starts to shrink again, there is no air pressure pushing on the piston 39. At this time, the piston 39 will block the spring cavity 41 again under the action of the tension spring 40 (it should be noted here that as long as the tension spring 40 blocks a small part of the upper end of the spring cavity 41 through the piston 39 so that the gas does not flow out from here, then as the airbag 24 shrinks, the air pressure will reverse and completely suck the piston 39 into the spring cavity 41).

[0062] As a preferred solution of the present invention, the cleaning assembly includes a connecting plate 17 and two connecting rods 18, the bottom surface of the connecting plate 17 is fixedly connected to the upper end of the piston 39, the two ends of the connecting plate 17 are respectively fixedly connected to the upper ends of the two connecting rods 18, and the lower ends of the two connecting rods 18 are respectively fixedly connected to the upper surfaces of the two scrapers 19.

[0063] More specifically, when the piston 39 moves outward, the connecting plate 17 will move along with it, and when the connecting plate 17 moves, it will push the connecting rod 18 to move together, so that the scraper strip 19 can be driven to rise and fall through the connecting rod 18.

[0064] As a preferred embodiment of the present invention, the bottom surface of the piston 39 is fixedly connected with an auxiliary rod 32, the lower end of the auxiliary rod 32 passes through the spring cavity 41 and the vent hole 42, and is fixedly connected with an anti-slip sheet 33, the diameter of the anti-slip sheet 33 is larger than the diameter of the vent hole 42, the diameter of the auxiliary rod 32 is smaller than the diameter of the vent hole 42, and the length of the auxiliary rod 32 passing through one end of the vent hole 42 is not less than the length of the piston 39.

[0065] More specifically, by providing the auxiliary rod 32 and the anti-slip sheet 33, it is possible to avoid a situation in which the air pressure in the airbag 24 increases rapidly within a period of time, causing the piston 39 to rise too quickly from the spring chamber 41, thereby causing the piston 39 to separate from the spring chamber 41, or even causing misalignment between the piston 39 and the spring chamber 41, and the piston 39 cannot be smoothly pulled back into the spring chamber 41 when the air pressure subsequently decreases.

[0066] As a preferred solution of the present invention, the outer wall of one end of the oil pillow 2 is sleeved and fixedly connected with a mounting flange 6, the mounting flange 6 is fastened with a sealing flange 7 by bolts, and a sealing plate No. 1 11 is fixedly connected to the side of the sealing flange 7 close to the mounting flange 6, and the other side of the sealing plate No. 1 11 is abutted against two support bars 13, an arc plate 15 and one end of the baffle 16.

[0067] More specifically, by providing the mounting flange 6 and the sealing flange 7, firstly, the sealing effect inside the oil pillow 2 can be increased; secondly, through the No. 1 sealing plate 11 on the sealing flange 7, from one end of the two support bars 13, the arc plate 15 and the baffle 16, these components can be tightly pressed against the inside of the oil pillow 2 to avoid air leakage or shaking.

[0068] As a preferred solution of the present invention, a semicircular opening 28 is penetrated through the side wall of the sealing flange 7, and a semicircular plate 10 is slidably connected to the inner wall of the semicircular opening 28. A No. 2 sealing plate 12 is fixedly connected to the side of the semicircular plate 10 close to the mounting flange 6, and the other side of the No. 2 sealing plate 12 is abutted against one end of two support bars 13, and a portion of the upper end of the No. 2 sealing plate 12 protrudes, and the protruding portion matches and abuts against the lower end of the No. 1 sealing plate 11.

[0069] More specifically, by providing the semicircular plate 10 and the second sealing plate 12, when it is necessary to clean the upper surface of the airbag 24, it is only necessary to loosen the mounting flange 6 and the sealing flange 7. At this time, the end of the airbag 24 close to the sealing flange 7 will be blocked by the second sealing plate 12, so that the airbag 24 will not slide toward the outside of the oil pillow 2 due to the fluidity of the transformer oil inside. In addition, because the mounting flange 6 and the sealing flange 7 are loosened and limited, the cleaning of other components is not affected.

[0070] As a preferred solution of the present invention, the inner wall of the end of the oil pillow 2 away from the mounting flange 6 and the side of the No. 1 sealing plate 11 close to the oil pillow 2 are fixedly connected with a hollow clamping plate 21 and a sealing strip 22, both ends of the baffle 16 are provided with a bayonet 37, the inner walls of the two bayonet 37 are respectively slidably connected to the inner walls of the two hollow clamping plates 21, and both ends of the arc plate 15 are provided with a sealing opening 34, the inner walls of the two sealing openings 34 are respectively slidably connected to the outer walls of the two sealing strips 22.

[0071] More specifically, by providing the hollow card plate 21 and the sealing strip 22, a support can be provided at both ends of the baffle 16 and the arc plate 15 respectively through the hollow card plate 21 and the sealing strip 22, and the baffle 16 and the arc plate 15 can be sealed after the mounting flange 6 and the sealing flange 7 are connected and fixed to avoid gas leakage and affect the other purposes achieved by the above-mentioned changes in air pressure.

[0072] As a preferred solution of the present invention, both sides of the upper end of the airbag 24 are fixedly connected with a No. 2 slide bar 23, both sides of the arc plate 15 are fixedly connected with a No. 1 slide bar 14, and two adjacent sides of the two support bars 13 are provided with two slide grooves 25, and the two No. 1 slide bars 14 and the two No. 2 slide bars 23 are respectively slidably connected to the inner walls of the four slide grooves 25.

[0073] More specifically, by providing the first slide bar 14 and the second slide bar 23, firstly, the connectivity between the baffle 16 and the arc plate 15 and the support bar 13 can be increased; secondly, the sealing between the baffle 16 and the arc plate 15 and the support bar 13 can be increased to avoid gas leakage.

[0074] As a preferred embodiment of the present invention, the drainage mechanism includes a suspension rod 26, a water level sensor 27, a drain pipe 8 and a one-way solenoid valve 9, the upper end of the suspension rod 26 is fixedly connected to the inner wall of the oil pillow 2, the lower end of the suspension rod 26 is fixedly connected to the outer wall of the water level sensor 27, one end of the drain pipe 8 is fixedly connected to the outer wall of the oil pillow 2, the other end of the drain pipe 8 is located outside the oil pillow 2, the one-way solenoid valve 9 is located inside the drain pipe 8, and the oil pillow 2, the drain pipe 8 and the one-way solenoid valve 9 are internally connected.

[0075] More specifically, during normal use, if there is a certain amount of condensed water at the two ends of the arc plate 15 but it is less than the set value, the one-way solenoid valve 9 is normally closed.

[0076] When for some reason the condensed water increases and exceeds the set value, the one-way solenoid valve 9 is activated. After activation, the condensed water in the oil pillow 2 can be discharged to the outside through the drain pipe 8. After the discharge is completed, the one-way solenoid valve 9 is immediately closed to prevent external dust from flowing back into the oil pillow 2.

[0077] It should be particularly noted here that the water outlet of the drain pipe 8 should be located below the standard water level, so that when draining water, external dust is not easy to flow into the oil pillow 2 from here.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart distribution transformer, comprising a transformer body (1), an oil pillow (2) installed on one side of the transformer body (1), a connecting pipe (4) installed on the oil pillow (2), a breather (3) installed at the other end of the connecting pipe (4), and an overflow pipe (5) installed between the transformer body (1) and the oil pillow (2), characterized in that: Support bars (13) are fixedly connected to both sides of the inner wall of the oil pillow (2), an air bag (24) and an arc plate (15) are connected between the two support bars (13), and the arc plate (15) is located above the air bag (24), a plurality of air inlet holes (29) are penetrated through the upper surface of the arc plate (15), and a one-way valve (30) is fixedly connected inside the air inlet holes (29), and two groups of protective components are connected to the upper surface of the arc plate (15), and the other ends of the two groups of protective components are simultaneously connected to a baffle (16), and a plurality of air outlet holes (31) are penetrated through the upper surfaces of the baffle (16) and the arc plate (15). ), and the plurality of air outlet holes (31) on the baffle plate (16) and the arc plate (15) are evenly divided into two groups and are respectively located on both sides of the air inlet hole (29), the plurality of air outlet holes (31) are connected to sealing components, a cleaning component is connected between two sealing components located on both sides of the same air inlet hole (29), two scraping strips (19) are simultaneously connected to both ends of the plurality of cleaning components, the two scraping strips (19) are respectively abutted against the sides of the two groups of protective components that are away from each other, the two sides of the inner wall of the oil pillow (2) are connected to drainage mechanisms, and the other ends of the two drainage mechanisms penetrate the interior of the oil pillow (2) to the outside of the oil pillow (2); The protection component comprises a dustproof net (20), two clamping strips (36) and four limit strips (35), the two clamping strips (36) are respectively fixedly connected to the upper and lower sides of the dustproof net (20), wherein the bottom surfaces of the two limit strips (35) are both fixedly connected to the upper surface of the arc plate (15), and the upper surfaces of the other two limit strips (35) are both fixedly connected to the bottom surface of the baffle (16), the two clamping strips (36) are respectively located between the two limit strips (35) of the upper and lower groups, and the side walls of the clamping strips (36) are slidably connected to the side walls of the limit strips (35), and the side walls of the scraper strips (19) are against the side walls of the dustproof net (20); The sealing assembly comprises a vent pipe (38), a piston (39) and a tension spring (40); the outer walls of the upper and lower ends of the vent pipe (38) are fixedly connected to the inner walls of the air outlet hole (31) of the baffle plate (16) and the arc plate (15), respectively; a spring chamber (41) is provided at the upper end of the vent pipe (38); a vent hole (42) is provided at the lower end of the vent pipe (38); the spring chamber (41) and the vent hole (42) are internally communicated; one end of the tension spring (40) is fixedly connected to the inner wall of the spring chamber (41) near the vent hole (42); the other end of the tension spring (40) is fixedly connected to the lower end of the piston (39); the side wall of the piston (39) is slidably connected to the inner wall of the spring chamber (41); and the upper end of the piston (39) is connected to the end of the cleaning assembly away from the scraper (19); The cleaning assembly comprises a connecting plate (17) and two connecting rods (18), the bottom surface of the connecting plate (17) is fixedly connected to the upper end of the piston (39), the two ends of the connecting plate (17) are respectively fixedly connected to the upper ends of the two connecting rods (18), and the lower ends of the two connecting rods (18) are respectively fixedly connected to the upper surfaces of the two scraping strips (19); The bottom surface of the piston (39) is fixedly connected to an auxiliary rod (32), the lower end of the auxiliary rod (32) passes through the spring cavity (41) and the vent hole (42), and is fixedly connected to an anti-slip sheet (33), the diameter of the anti-slip sheet (33) is larger than the diameter of the vent hole (42), the diameter of the auxiliary rod (32) is smaller than the diameter of the vent hole (42), and the length of one end of the auxiliary rod (32) passing through the vent hole (42) is not less than the length of the piston (39); The drainage mechanism comprises a suspension rod (26), a water level sensor (27), a drainage pipe (8) and a one-way solenoid valve (9); the upper end of the suspension rod (26) is fixedly connected to the inner wall of the oil pillow (2); the lower end of the suspension rod (26) is fixedly connected to the outer wall of the water level sensor (27); one end of the drainage pipe (8) is fixedly connected to the outer wall of the oil pillow (2); the other end of the drainage pipe (8) is located outside the oil pillow (2); the one-way solenoid valve (9) is located inside the drainage pipe (8); and the oil pillow (2), the drainage pipe (8) and the one-way solenoid valve (9) are internally connected.

2. The intelligent distribution transformer according to claim 1, characterized in that: A mounting flange (6) is sleeved on the outer wall of one end of the oil pillow (2) and fixedly connected thereto. The mounting flange (6) is fastened to a sealing flange (7) by bolts. A first sealing plate (11) is fixedly connected to one side of the sealing flange (7) close to the mounting flange (6). The other side of the first sealing plate (11) abuts against two support bars (13), the arc plate (15) and one end of the baffle (16).

3. The intelligent distribution transformer according to claim 2, characterized in that: A semicircular opening (28) is formed through the side wall of the sealing flange (7), and a semicircular plate (10) is slidably connected to the inner wall of the semicircular opening (28). A second sealing plate (12) is fixedly connected to one side of the semicircular plate (10) close to the mounting flange (6), and the other side of the second sealing plate (12) abuts against one end of two support bars (13). A portion of the upper end of the second sealing plate (12) protrudes, and the protruding portion matches and abuts against the lower end of the first sealing plate (11).

4. The intelligent distribution transformer according to claim 2, characterized in that: The inner wall of the oil pillow (2) at one end away from the mounting flange (6) and the side of the first sealing plate (11) close to the oil pillow (2) are fixedly connected with a hollow clamping plate (21) and a sealing strip (22); both ends of the baffle plate (16) are provided with a clamping opening (37); the inner walls of the two clamping openings (37) are respectively slidably connected to the inner walls of the two hollow clamping plates (21); both ends of the arc plate (15) are provided with a sealing opening (34); the inner walls of the two sealing openings (34) are respectively slidably connected to the outer walls of the two sealing strips (22).

5. The intelligent distribution transformer according to claim 1, characterized in that: Both sides of the upper end of the airbag (24) are fixedly connected to a No. 2 slide bar (23), both sides of the arc plate (15) are fixedly connected to a No. 1 slide bar (14), and two adjacent sides of the two support bars (13) are provided with two slide grooves (25), and the two No. 1 slide bars (14) and the two No. 2 slide bars (23) are respectively slidably connected to the inner walls of the four slide grooves (25).

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