CN116779292A - Multi-winding transformer - Google Patents
Multi-winding transformer Download PDFInfo
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- CN116779292A CN116779292A CN202310858395.8A CN202310858395A CN116779292A CN 116779292 A CN116779292 A CN 116779292A CN 202310858395 A CN202310858395 A CN 202310858395A CN 116779292 A CN116779292 A CN 116779292A
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- 238000004804 winding Methods 0.000 title claims abstract description 54
- 230000017525 heat dissipation Effects 0.000 claims abstract description 59
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 9
- 241000220317 Rosa Species 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 167
- 238000001816 cooling Methods 0.000 description 26
- 239000012535 impurity Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 14
- 230000005855 radiation Effects 0.000 description 13
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000007789 sealing Methods 0.000 description 10
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000010724 circulating oil Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The invention discloses a multi-winding transformer, and relates to the field of transformers. The invention comprises an outer shell, a circulating heat dissipation mechanism and a filtering and cleaning mechanism, wherein a plurality of windings are arranged in the outer shell, and transformer oil immersed in the windings is filled in the outer shell; the circulation heat dissipation mechanism comprises a conservator arranged above the outer shell, the top surface of the outer shell is further connected with an oil outlet pipe and a return pipe, the outer side end of the oil outlet pipe is connected with a spiral heat dissipation pipe, and one end of the spiral heat dissipation pipe is communicated with the conservator. According to the invention, after the transformer oil in the outer shell absorbs heat generated by the working of the winding, the temperature of the transformer oil is increased and the density is reduced, at the moment, the high-temperature low-density transformer oil floats up in the outer shell and is conveyed into the conservator along the spiral radiating pipe, meanwhile, the normal-temperature transformer oil stored in the conservator conveys supplementary transformer oil into the outer shell through the return pipe, and the heat dissipation and the temperature reduction of the outer shell are continuously carried out, so that the self-circulation heat dissipation and the temperature reduction of the transformer oil are realized.
Description
Technical Field
The invention belongs to the field of transformers, and particularly relates to a multi-winding transformer.
Background
The most common of multi-winding transformers in power systems is the three-winding transformer. The iron core is wound with a transformer with a primary winding and a plurality of secondary windings. The number of turns of each secondary winding is different, so that the terminal voltage is also different, and the multi-winding transformer can supply power to electric equipment with different voltages. A large amount of heat can be generated in the working process of the multi-winding transformer, and transformer oil is filled in the multi-winding transformer in the prior art, so that the heat dissipation and insulation effects of the transformer are improved.
Chinese patent CN210136766U discloses an oil immersed transformer with automatic cleaning function, which filters the oil in the circulation cooling by setting a filter box, so as to prolong the service life of the oil, and make the oil play a good role in cooling and maintenance; through being equipped with the insulating housing with the outside cover of oil-immersed transformer casing, carry out holistic thermal-insulated protection, only oil-immersed transformer casing inside heat production has alleviateed the burden when giving the liquid cooling maintenance, and dispel the heat through around setting up at the outside fluid cooling circulation chamber of insulating housing, guaranteed holistic cooling effect. The circulating cooling structure is arranged in the heat insulation shell, and the heat insulation shell can prevent the outside air temperature from interfering the working process of the circulating cooling structure, but prevents oil from radiating and cooling outwards, so that the radiating and cooling efficiency of the circulating cooling structure is reduced, the whole heat dissipation of the transformer is not facilitated, the circulating cooling structure is arranged at the lower position of the transformer, the density of the oil is gradually reduced after heat absorption and temperature rise, and therefore high-temperature oil can gradually float in the transformer, and the radiating and cooling effects of the circulating cooling structure are reduced; on the other hand, when filtering impurity in the fluid, impurity can adhere gradually to and block up the filter cartridge to influence the filter effect of filter cartridge, and still some impurity can adhere on the inner wall of transformer object before the circulation is carried and is filtered in the fluid, along with the long-time work of using of transformer, the impurity of adhesion can be more and more on its inner wall, and then can influence fluid radiating effect.
Disclosure of Invention
Aiming at the problems in the related art, the invention provides a multi-winding transformer, wherein a conservator for storing transformer oil is arranged above a transformer outer shell, a spiral radiating pipe is circularly connected between the conservator and the transformer outer shell, when the transformer oil in the outer shell absorbs heat generated by winding operation, the temperature of the transformer oil is increased and the density is reduced, at the moment, high-temperature low-density transformer oil floats up in the outer shell and is conveyed into the conservator along the spiral radiating pipe, meanwhile, normal-temperature transformer oil stored in the conservator conveys supplementary transformer oil into the outer shell through a return pipe, and the heat dissipation and the temperature reduction of the transformer oil are continuously carried out in the outer shell, so that the self-circulation heat dissipation and the temperature reduction of the transformer oil are realized, and the heat dissipation and the temperature reduction of the transformer oil are continuously carried out when the transformer oil is conveyed in the spiral radiating pipe and is stored in the conservator; the transformer oil is quickly restored to the normal temperature state, and the heat dissipation effect of the transformer oil on the transformer is guaranteed.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a multi-winding transformer which comprises an outer shell, a circulating heat dissipation mechanism and a filtering and cleaning mechanism, wherein a plurality of windings are arranged in the outer shell, transformer oil immersed in the windings is filled in the outer shell, and a wiring terminal connected with the windings is arranged on the top surface of the outer shell; the circulating heat dissipation mechanism comprises a conservator arranged above the outer shell, supports are fixedly arranged at two ends of the conservator, the bottom end of each support is fixedly arranged on the top surface of the outer shell, an oil outlet pipe and a return pipe are further connected and arranged on the top surface of the outer shell, a spiral heat dissipation pipe is connected to the outer side end of the oil outlet pipe, and one end of the spiral heat dissipation pipe is communicated with the conservator; the transformer oil in the outer shell is used for absorbing heat generated by winding operation, the density of the transformer oil after heat absorption and temperature rise is reduced, the transformer oil rises along the outer shell, the oil outlet pipe and the spiral radiating pipe and is conveyed into the oil conservator, after the transformer oil in the oil conservator is cooled, the density of the transformer oil rises, the transformer oil is conveyed into the outer shell by the return pipe, and the transformer oil in the outer shell is supplemented; the filtering and cleaning mechanism comprises a filter box connected and installed between the oil outlet pipe and the spiral radiating pipe, a filter screen is fixedly installed in the filter box, and the top end of the filter screen extends to the outside of the filter box.
Further, a temperature sensor extending into the outer shell is arranged on the side wall of the outer shell, a motor and a controller are fixedly arranged on the top surface of the outer shell, the motor is arranged on one side of the spiral radiating pipe, one end of the motor is in transmission connection with a rotating shaft, and fan blades are fixedly arranged on the rotating shaft; the hydraulic pump is connected and installed between the oil outlet pipe and the spiral radiating pipe, the temperature sensor is connected with the controller through signals, and the controller is respectively connected with the motor and the hydraulic pump in an electric control mode.
Further, be provided with the spout on the inside wall of rose box, the top of rose box be provided with the open slot of spout intercommunication, the filter screen slip cartridge in the spout, the upper end of filter screen extends to in the open slot, just the top fixed mounting of filter screen has sealed end plate, sealed end plate pass through screw fixed mounting in the top surface of rose box.
Further, the junction of rose box with go out oil pipe with spiral cooling tube all installs the exit valve, the drain valve is installed in one side connection of rose box lower extreme.
Further, the inside of shell body is provided with crane and reciprocating screw, reciprocating screw rotate install in one side of shell body inner wall, reciprocating screw's top with connect through the drive unit transmission between the pivot, the crane set up in the winding with between the shell body inner wall, just the outer lane fixed mounting of crane have hug closely in scraper blade on the shell body inner wall, fixed mounting has the thread bush on the crane, the thread bush screw thread install in on the reciprocating screw.
Further, the transmission unit comprises a transmission shaft, a driving bevel gear and a driven bevel gear, wherein the transmission shaft is rotatably arranged at the top end of the outer shell, the top end of the transmission shaft extends to one side of the rotating shaft, and the bottom end of the transmission shaft extends to one side of the reciprocating screw rod; the driving bevel gear is fixedly arranged on the rotating shaft, the driven bevel gear is fixedly arranged at the top end of the transmission shaft, the driving bevel gear is in meshed transmission connection with the driven bevel gear, the driving wheel is fixedly arranged at the bottom end of the transmission shaft, the driven wheel is fixedly arranged at the top end of the reciprocating screw rod, and the driving wheel is in meshed transmission connection with the driven wheel through a transmission belt.
Further, a plurality of evenly distributed optical axis guide rails are fixedly arranged in the outer shell, and the lifting frame is slidably arranged on the optical axis guide rails through the through holes.
Further, the liquid inlet end of the oil outlet pipe is connected and installed at the upper end of the outer shell, and the liquid outlet end of the spiral radiating pipe extends to the upper end position inside the conservator.
Further, a plurality of uniformly distributed heat radiation fins are fixedly arranged on the outer wall of the outer shell.
The invention has the following beneficial effects:
1. according to the invention, the oil conservator for storing the transformer oil is arranged above the outer shell of the transformer, the spiral radiating pipe is circularly connected between the oil conservator and the outer shell of the transformer, after the transformer oil in the outer shell absorbs heat generated by winding work, the temperature of the transformer oil is increased and the density is reduced, the high-temperature low-density transformer oil floats up in the outer shell and is conveyed into the oil conservator along the spiral radiating pipe, meanwhile, the normal-temperature transformer oil stored in the oil conservator is conveyed into the outer shell through the return pipe to supplement the transformer oil in the outer shell, and the heat dissipation and the temperature reduction are continuously carried out in the outer shell, so that the self-circulation heat dissipation and the temperature reduction of the transformer oil are realized, and the transformer oil is continuously cooled through the self-heat dissipation when conveyed in the spiral radiating pipe and the heat dissipation and the heat storage of the transformer oil are ensured, so that the transformer oil is quickly recovered to a normal-temperature state.
2. According to the invention, the temperature sensor, the controller and the motor are arranged on the outer shell, meanwhile, the hydraulic pump is arranged between the outer shell and the spiral radiating pipe, the temperature sensor can detect the temperature of transformer oil in the outer shell, when the transformer works for a long time and the self-circulation radiating and cooling cannot meet the radiating requirement of the transformer, the temperature sensor detects that the transformer oil temperature is too high, at the moment, the controller controls the motor and the hydraulic pump to be started, the hydraulic pump can improve the circulation flow speed of the transformer oil among the outer shell, the spiral radiating pipe and the conservator, the motor can drive the fan blades to rotate, and ventilation and heat dissipation are carried out on the transformer oil conveyed in the spiral radiating pipe through the fan blades, so that the radiating and cooling efficiency of the transformer oil can be improved, and the radiating efficiency of the transformer is further improved.
3. According to the invention, the filter tank is arranged between the outer shell and the spiral radiating pipe, so that the transformer oil can be filtered in the circulating conveying and cooling process of the transformer oil, colloid and other impurities generated in the transformer oil can be filtered and removed, the service life of the transformer oil is prolonged, and the filter screen in the filter tank extends to the outside of the tank, so that the filter screen can be conveniently and regularly detached and cleaned, the filter screen can be prevented from being blocked, and the filtering and impurity removing effects of the filter screen are ensured.
4. According to the invention, the scraping plate driven by the reciprocating screw rod is closely arranged on the inner wall of the outer shell, the top end of the reciprocating screw rod is in transmission connection with the motor through the transmission unit, when the motor works to perform auxiliary heat dissipation, the motor synchronously drives the reciprocating screw rod to rotate through the transmission unit, the scraping plate is driven to reciprocate along the inner wall of the outer shell in the rotating process of the reciprocating screw rod, impurities adhered to the inner wall of the outer shell are scraped through the scraping plate, the scraped impurities float in transformer oil again, and the scraped impurities are conveyed into the filter tank in the circulating cooling process of the transformer oil and are filtered and cleared by the filter tank, so that the filtering and clearing effects on the transformer oil can be improved, and the service life and the heat dissipation effects of the transformer oil are further improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings that are needed for the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic overall perspective view of the present invention;
FIG. 2 is a schematic view of the structure of the present invention shown in FIG. 1 at a partially enlarged scale;
FIG. 3 is a schematic view of a three-dimensional cut-away structure of the present invention;
FIG. 4 is a schematic view of the structure of the present invention shown in FIG. 3 at B in a partially enlarged manner;
FIG. 5 is a second schematic perspective view of the present invention;
FIG. 6 is a schematic view of a partially enlarged structure of the present invention at C of FIG. 5;
FIG. 7 is a third schematic perspective view of the present invention;
fig. 8 is a schematic view of a partial enlarged structure at D of fig. 7 according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. an outer housing; 11. a connection terminal; 12. a heat radiation fin; 13. a winding; 2. a circulating heat dissipation mechanism; 21. a conservator; 22. a bracket; 23. an oil outlet pipe; 24. a temperature sensor; 25. a spiral radiating pipe; 26. a motor; 27. a controller; 28. a rotating shaft; 29. a fan blade; 210. a hydraulic pump; 211. a return pipe; 3. a filtering and cleaning mechanism; 31. a filter box; 32. a sealing end plate; 33. inlet and outlet valves; 34. a blow-down valve; 35. a lifting frame; 36. a scraper; 37. an optical axis guide rail; 38. a chute; 39. a filter screen; 310. a drive bevel gear; 311. a driven bevel gear; 312. a transmission shaft; 313. a reciprocating screw rod; 314. a thread sleeve; 315. a driving wheel; 316. driven wheel; 317. a driving belt.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, based on the embodiments in the invention, which a person of ordinary skill in the art would obtain without inventive faculty, are within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "top," "middle," "inner," and the like indicate an orientation or positional relationship, merely for convenience of description and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Referring to fig. 1-5, the invention is a multi-winding transformer, comprising an outer shell 1, a circulating heat dissipation mechanism 2 and a filtering and cleaning mechanism 3, wherein a plurality of windings 13 are installed in the outer shell 1, transformer oil immersed in the windings 13 is filled in the outer shell 1, and a wiring terminal 11 connected with the windings 13 is installed on the top surface of the outer shell 1; the circulating heat dissipation mechanism 2 comprises a conservator 21 arranged above the outer shell 1, two ends of the conservator 21 are fixedly provided with brackets 22, the bottom ends of the brackets 22 are fixedly arranged on the top surface of the outer shell 1, the top surface of the outer shell 1 is also connected and provided with an oil outlet pipe 23 and a return pipe 211, the outer side end of the oil outlet pipe 23 is connected with a spiral heat dissipation pipe 25, and one end of the spiral heat dissipation pipe 25 is communicated with the conservator 21; the transformer oil in the outer shell 1 is used for absorbing heat generated by the work of the winding 13, cooling the winding 13, and reducing the density of the transformer oil after absorbing heat and raising temperature, so that the transformer oil with high temperature can gradually float up in the outer shell 1 and ascend along the oil outlet pipe 23 and the spiral heat radiation pipe 25 to be conveyed into the oil conservator 21, and the spiral heat radiation pipe 25 is a long pipe which is arranged in a bending spiral manner, so that the conveying heat radiation time of the transformer oil in the spiral heat radiation pipe 25 can be prolonged, the transformer oil can be rapidly cooled when conveyed in the spiral heat radiation pipe 25, and meanwhile, the transformer oil can be continuously cooled when stored in the oil conservator 21, so that the transformer oil is rapidly recovered to a normal temperature state; the normal-temperature transformer oil stored in the oil conservator 21 is conveyed into the outer shell 1 through the return pipe 211 due to the increase of the density of the normal-temperature transformer oil, and the transformer oil in the outer shell 1 is supplemented, so that the transformer oil in the outer shell 1 is kept in a sufficient state, and the self-circulation cooling and heat dissipation of the transformer oil are realized;
the filtering and cleaning mechanism 3 comprises a filtering box 31 connected and installed between the oil outlet pipe 23 and the spiral radiating pipe 25, a filter screen 39 is fixedly installed in the filtering box 31, and the top end of the filter screen 39 extends to the outside of the filtering box 31; when transformer oil is conveyed from the outer shell 1 to the conveying conservator 21, the transformer oil needs to pass through the filter tank 31 and is filtered by the filter screen 39 in the filter tank 31, so that impurities such as colloid generated in the use process of the transformer oil are removed through filtration, the service life of the transformer oil is prolonged, the filter screen 39 extends to the outside of the filter tank 31, the filter screen 39 is conveniently detached and taken out, the filter screen 39 is conveniently and regularly detached and cleaned, the filter screen 39 can be prevented from being blocked, and the filtration impurity removal effect of the filter screen 39 is ensured.
Referring to fig. 1-5, in one embodiment, a temperature sensor 24 extending into the outer casing 1 is installed on a side wall of the outer casing 1, a motor 26 and a controller 27 are fixedly installed on a top surface of the outer casing 1, the motor 26 is disposed on one side of the spiral heat dissipation tube 25, a rotating shaft 28 is connected to one end of the motor 26 in a transmission manner, and fan blades 29 are fixedly installed on the rotating shaft 28; a hydraulic pump 210 is connected and installed between the oil outlet pipe 23 and the spiral radiating pipe 25, the temperature sensor 24 is in signal connection with the controller 27, and the controller 27 is respectively and electrically connected with the motor 26 and the hydraulic pump 210; wherein, the temperature sensor 24 adopts a PT100 thermal resistance sensor, and the controller 27 adopts an stm32 singlechip controller; the temperature sensor 24 can detect the temperature of the transformer oil in the outer shell 1 and transmit detection information to the controller 27, when the inner winding 13 of the transformer works for a long time or the outside air temperature is higher, and the self-circulation heat dissipation and cooling of the circulating heat dissipation mechanism 2 cannot meet the heat dissipation requirement of the winding 13, the temperature of the transformer oil in the outer shell 1 can continuously rise, when the temperature sensor 24 detects the ultra-high temperature threshold (60 ℃ in the embodiment) of the transformer oil, the controller 27 controls the motor 26 and the hydraulic pump 210 to start, the motor 26 drives the rotating shaft 28 to rotate, and then drives the fan blades 29 on the rotating shaft 28 to rotate, so that the spiral heat dissipation pipe 25 on one side of the fan blades 29 is ventilated and dissipated, the heat dissipation efficiency of the transformer oil in the spiral heat dissipation pipe 25 is improved, the hydraulic pump 210 can hydraulically drive the transformer oil in the spiral heat dissipation pipe 25, the circulation flow efficiency of the transformer oil is improved, and the circulation oil change speed of the transformer oil in the outer shell 1 is improved, and the normal-temperature transformer oil in the oil pillow 21 is conveyed into the outer shell 1 more quickly, and the heat dissipation efficiency of the winding 13 is improved.
Referring to fig. 2-4, in one embodiment, a chute 38 is disposed on an inner side wall of the filter box 31, an open slot communicating with the chute 38 is disposed at a top end of the filter box 31, the filter screen 39 is slidably clamped in the chute 38, an upper end of the filter screen 39 extends into the open slot, a sealing end plate 32 is fixedly mounted at a top end of the filter screen 39, and the sealing end plate 32 is fixedly mounted on a top surface of the filter box 31 by screws; the sliding groove 38 can limit the filter screen 39 in a clamping manner, so that the filter screen 39 is stably installed, the sealing end plate 32 can be matched with a screw to further lock and fix the filter screen 39, the sealing end plate 32 can seal an open groove at the top end of the filter box 31 to prevent transformer oil from leaking outwards from the open groove, when the filter screen 39 needs to be disassembled and cleaned, the screw on the sealing end plate 32 is unscrewed at first, the sealing end plate 32 and the filter box 31 are not fastened and connected any more, the sealing end plate 32 is pulled up, the filter screen 39 can be pulled out of the open groove through the sealing end plate 32, the taken filter screen 39 is cleaned by a cleaning agent, then is matched with the sliding groove 38 to be reinserted into the filter box 31, and the sealing end plate 32 is locked and fixed on the top surface of the filter box 31 through the screw, so that the disassembly and cleaning process of the filter screen 39 can be completed.
Referring to fig. 2 and 6, in one embodiment, an inlet and outlet valve 33 is installed at the connection between the filtering tank 31 and the oil outlet pipe 23 and the spiral heat dissipation pipe 25, and a drain valve 34 is installed at one side of the lower end of the filtering tank 31; when the filter tank 31 filters transformer oil, impurities in the transformer oil can be adhered to the filter screen 39, and part of the impurities can be deposited in the filter tank 31, so that when the filter screen 39 is disassembled and cleaned, the inlet and outlet valves 33 on the inlet and outlet of the filter tank 31 can be closed firstly to disconnect the filter tank 31 from an oil way of the circulating heat dissipation mechanism 2, then the drain valve 34 is opened to remove transformer oil and deposited impurities in the filter tank 31, after the filter screen 39 is disassembled, the filter tank 31 can be cleaned by using a cleaning agent through an open slot, the impurities in the filter tank 31 are further removed, and the cleaned sewage can be discharged from the drain valve 34, so that the filter tank 31 and the filter screen 39 are both restored to a clean state, and the filtering effect on the transformer oil is ensured;
furthermore, the oil filling port is arranged on the oil conservator 21, and when the filtering tank 31 discharges oil and washes, part of transformer oil is lost, so after the oil discharging process is finished, the supplementary transformer oil can be added into the oil conservator 21 through the oil filling port, and the sufficiency of the transformer oil in the oil conservator 21 and the outer shell 1 is ensured.
Referring to fig. 5-8, in one embodiment, a lifting frame 35 and a reciprocating screw 313 are disposed in the outer casing 1, the reciprocating screw 313 is rotatably mounted on one side of the inner wall of the outer casing 1, the top end of the reciprocating screw 313 is in transmission connection with the rotating shaft 28 through a transmission unit, the lifting frame 35 is disposed between the winding 13 and the inner wall of the outer casing 1, a scraper 36 tightly attached to the inner wall of the outer casing 1 is fixedly mounted on an outer ring of the lifting frame 35, a threaded sleeve 314 is fixedly mounted on the lifting frame 35, and the threaded sleeve 314 is in threaded mounting on the reciprocating screw 313; when the motor 26 drives the rotating shaft 28 and the fan blades 29 to rotate for auxiliary heat dissipation, the rotating shaft 28 drives the reciprocating screw rod 313 to rotate through the transmission unit, the reciprocating screw rod 313 drives the lifting frame 35 to reciprocate through the thread bush 314 in the rotating process, and then the scraping plate 36 is driven to reciprocate on the inner wall of the outer shell 1, so that impurities in the transformer oil are prevented from adhering to the inner wall of the outer shell 1, or impurities adhered to the inner wall of the outer shell 1 are scraped off, so that the impurities are resuspended in the transformer oil, the impurities suspended in the transformer oil can be gradually conveyed into the filter tank 31 along with the circulating cooling of the transformer oil, and finally the impurities are filtered and intercepted by the filter screen 39, so that the cleanliness of the transformer oil in the outer shell 1 is guaranteed, and the heat dissipation and the edge effect of the transformer oil are improved.
Referring to fig. 6 to 8, in one embodiment, the transmission unit includes a transmission shaft 312, a driving bevel gear 310, and a driven bevel gear 311, the transmission shaft 312 is rotatably mounted at the top end of the outer housing 1, the top end of the transmission shaft 312 extends to one side of the rotation shaft 28, and the bottom end of the transmission shaft 312 extends to one side of the reciprocating screw 313; the driving bevel gear 310 is fixedly arranged on the rotating shaft 28, the driven bevel gear 311 is fixedly arranged at the top end of the transmission shaft 312, the driving bevel gear 310 is in meshed transmission connection with the driven bevel gear 311, the bottom end of the transmission shaft 312 is fixedly provided with a driving wheel 315, the top end of the reciprocating screw rod 313 is fixedly provided with a driven wheel 316, and the driving wheel 315 is in meshed transmission connection with the driven wheel 316 through a transmission belt 317; when the rotating shaft 28 rotates, the rotating shaft 28 drives the driving bevel gear 310 to synchronously rotate, the driving bevel gear 310 is meshed with the driven bevel gear 311 to drive the transmission shaft 312 and the driving wheel 315 to rotate, the driving wheel 315 drives the driven wheel 316 to rotate through the transmission belt 317 to further drive the reciprocating screw 313 to rotate, the driving scraper 36 cleans the inner wall of the outer shell 1, the reciprocating screw 313 is in transmission connection with the rotating shaft 28 through the transmission unit, and when the motor 26 works to assist in heat dissipation, the scraper 36 can be synchronously driven to work, so that a driving piece is not required to be arranged in the outer shell 1 to drive the scraper 36 to work, and the driving of the scraper 36 is more convenient to use.
Referring to fig. 7-8, in one embodiment, a plurality of evenly distributed optical axis guide rails 37 are fixedly installed inside the outer casing 1, the lifting frame 35 is slidably installed on the optical axis guide rails 37 through a through hole, and the optical axis guide rails 37 can guide and limit the lifting frame 35, so that the lifting frame 35 is more stable in lifting movement.
Referring to fig. 3 and 8, in one embodiment, the liquid inlet end of the oil outlet pipe 23 is connected to the upper end of the outer casing 1, and when the transformer oil is heated and warmed, the density decreases and floats upwards, so that the liquid inlet end of the oil outlet pipe 23 is arranged at the upper end of the outer casing 1, and the transformer oil beneficial to high temperature is conveyed upwards into the oil outlet pipe 23, thereby facilitating self-circulation heat dissipation of the transformer oil; the liquid outlet end of the spiral radiating pipe 25 extends to the upper end position inside the conservator 21, and the liquid inlet end of the return pipe 211 is positioned at the bottom end inside the conservator 21, so that the transformer oil subjected to preliminary heat radiation by the spiral radiating pipe 25 can be conveyed to the upper end inside the conservator 21, and continuously radiates heat and cools in the conservator 21, and does not flow back into the outer shell 1 through the return pipe 211 immediately, so that the transformer oil has enough cooling and radiating time.
Referring to fig. 1, in one embodiment, a plurality of uniformly distributed heat dissipating fins 12 are fixedly mounted on the outer wall of the outer shell 1, and the heat dissipating fins 12 can increase the heat exchange area of the outer shell 1, thereby increasing the heat dissipating efficiency of the outer shell 1 and the transformer oil therein.
The using mode is as follows:
when the transformer works, the transformer oil in the outer shell 1 can absorb heat generated by the work of the winding 13, the winding 13 is cooled, and the density of the transformer oil after absorbing heat and raising temperature is reduced, so that the transformer oil at high temperature can gradually float up in the outer shell 1 and is conveyed into the oil conservator 21 along the oil outlet pipe 23 and the spiral heat radiation pipe 25, the spiral heat radiation pipe 25 is a long guide pipe which is arranged in a bending spiral manner, the conveying heat radiation time of the transformer oil in the spiral heat radiation pipe 25 can be prolonged, the transformer oil can be rapidly cooled when conveyed in the spiral heat radiation pipe 25, meanwhile, the transformer oil can be continuously cooled when stored in the oil conservator 21, and the transformer oil can be rapidly recovered to a normal temperature state; the normal-temperature transformer oil stored in the oil conservator 21 is conveyed into the outer shell 1 through the return pipe 211, and the transformer oil is supplemented into the outer shell 1, so that the transformer oil in the outer shell 1 is kept in a sufficient state, and self-circulation cooling and heat dissipation of the transformer oil are realized;
when the transformer oil is conveyed from the outer shell 1 to the conveying conservator 21, the transformer oil passes through the filter tank 31 and is filtered by the filter screen 39 in the filter tank 31, so that impurities such as colloid generated in the use process of the transformer oil are removed by filtration, the heat dissipation and insulation effects of the transformer oil are improved, and the service life of the transformer oil is prolonged;
the temperature sensor 24 can detect the temperature of the transformer oil in the outer shell 1 and transmit detection information to the controller 27, when the inner winding 13 of the transformer works for a long time or the outside air temperature is higher, and the self-circulation heat dissipation and cooling of the circulating heat dissipation mechanism 2 cannot meet the heat dissipation requirement of the winding 13, the temperature of the transformer oil in the outer shell 1 can continuously rise, when the temperature sensor 24 detects the ultra-high temperature threshold (the setting threshold is preferably 60 ℃) of the transformer oil, the controller 27 controls the motor 26 and the hydraulic pump 210 to be started, the motor 26 drives the rotating shaft 28 to rotate, and then drives the fan blades 29 on the rotating shaft 28 to rotate, so that the spiral heat dissipation pipe 25 on one side of the fan blades 29 is ventilated and dissipated, the heat dissipation efficiency of the transformer oil in the spiral heat dissipation pipe 25 is improved, the hydraulic pump 210 can hydraulically drive the transformer oil in the spiral heat dissipation pipe 25, the circulation flow efficiency of the transformer oil is improved, the circulating oil change speed of the transformer oil in the outer shell 1 is further improved, and the normal-temperature transformer oil in the oil pillow 21 is conveyed into the outer shell 1 more quickly, and the heat dissipation efficiency of the winding 13 is improved;
when the motor 26 drives the rotating shaft 28 and the fan blades 29 to rotate for auxiliary heat dissipation, the rotating shaft 28 drives the driving bevel gear 310 to synchronously rotate, the driving bevel gear 310 is meshed with the driving bevel gear 311 to drive the transmission shaft 312 and the driving wheel 315 to rotate, the driving wheel 315 drives the driven wheel 316 to rotate through the transmission belt 317 to drive the reciprocating screw 313 to rotate, the reciprocating screw 313 drives the lifting frame 35 to reciprocate in the rotating process through the thread bush 314, and then the scraper 36 is driven to reciprocate in the inner wall of the outer shell 1, so that impurities in the transformer oil are prevented from adhering to the inner wall of the outer shell 1, or the impurities adhered to the inner wall of the outer shell 1 are scraped off, so that the impurities are suspended in the transformer oil again, the impurities suspended in the transformer oil can be gradually conveyed into the filter tank 31 along with the circulating cooling of the transformer oil, and finally the impurities are filtered and intercepted by the filter screen 39, so that the cleanliness of the transformer oil in the outer shell 1 is guaranteed, and the heat dissipation and the edge effect of the transformer oil are improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above disclosed preferred embodiments of the invention are merely intended to help illustrate the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (9)
1. A multi-winding transformer, characterized by: the transformer oil filter comprises an outer shell (1), a circulating heat dissipation mechanism (2) and a filtering and cleaning mechanism (3), wherein a plurality of windings (13) are arranged in the outer shell (1), transformer oil immersed in the windings (13) is filled in the outer shell (1), and a wiring terminal (11) connected with the windings (13) is arranged on the top surface of the outer shell (1);
the circulating heat dissipation mechanism (2) comprises a conservator (21) arranged above the outer shell (1), supports (22) are fixedly arranged at two ends of the conservator (21), the bottom end of each support (22) is fixedly arranged on the top surface of the outer shell (1), an oil outlet pipe (23) and a return pipe (211) are further connected and arranged on the top surface of the outer shell (1), a spiral heat dissipation pipe (25) is connected to the outer side end of each oil outlet pipe (23), and one end of each spiral heat dissipation pipe (25) is communicated with the corresponding conservator (21); the transformer oil in the outer shell (1) is used for absorbing heat generated by the operation of the winding (13), the density of the transformer oil after heat absorption and temperature rise is reduced, the transformer oil rises along the outer shell (1), the oil outlet pipe (23) and the spiral radiating pipe (25) and is conveyed into the oil conservator (21), after the transformer oil in the oil conservator (21) is cooled, the density of the transformer oil rises, the transformer oil is conveyed into the outer shell (1) through the return pipe (211), and the transformer oil in the outer shell (1) is supplemented;
the filtering and cleaning mechanism (3) comprises a filtering box (31) which is connected and installed between the oil outlet pipe (23) and the spiral radiating pipe (25), a filter screen (39) is fixedly installed in the filtering box (31), and the top end of the filter screen (39) extends to the outside of the filtering box (31).
2. A multi-winding transformer according to claim 1, characterized in that: a temperature sensor (24) extending into the outer shell (1) is arranged on the side wall of the outer shell (1), a motor (26) and a controller (27) are fixedly arranged on the top surface of the outer shell (1), the motor (26) is arranged on one side of the spiral radiating pipe (25), one end of the motor (26) is in transmission connection with a rotating shaft (28), and fan blades (29) are fixedly arranged on the rotating shaft (28);
the hydraulic pump (210) is connected and installed between the oil outlet pipe (23) and the spiral radiating pipe (25), the temperature sensor (24) is connected with the controller (27) through signals, and the controller (27) is respectively connected with the motor (26) and the hydraulic pump (210) through electric control.
3. A multi-winding transformer according to claim 1, characterized in that: be provided with spout (38) on the inside wall of rose box (31), the top of rose box (31) be provided with the open slot of spout (38) intercommunication, filter screen (39) slip cartridge in spout (38), the upper end of filter screen (39) extends to in the open slot, just the top fixed mounting of filter screen (39) has sealed end plate (32), sealed end plate (32) pass through screw fixed mounting in the top surface of rose box (31).
4. A multi-winding transformer according to claim 3, wherein: inlet and outlet valves (33) are arranged at the joints of the filter box (31) with the oil outlet pipe (23) and the spiral radiating pipe (25), and a drain valve (34) is arranged at one side of the lower end of the filter box (31).
5. A multi-winding transformer according to claim 2, characterized in that: the inside of shell body (1) is provided with crane (35) and reciprocating screw (313), reciprocating screw (313) rotate install in one side of shell body (1) inner wall, the top of reciprocating screw (313) with be connected through the drive unit transmission between pivot (28), crane (35) set up in winding (13) with between shell body (1) inner wall, just the outer lane fixed mounting of crane (35) have hug closely scraper blade (36) on shell body (1) inner wall, fixed mounting has thread bush (314) on crane (35), thread bush (314) screw thread install in on reciprocating screw (313).
6. A multi-winding transformer according to claim 5, wherein: the transmission unit comprises a transmission shaft (312), a drive bevel gear (310) and a driven bevel gear (311), wherein the transmission shaft (312) is rotatably arranged at the top end of the outer shell (1), the top end of the transmission shaft (312) extends to one side of the rotating shaft (28), and the bottom end of the transmission shaft (312) extends to one side of the reciprocating screw rod (313);
the driving bevel gear (310) is fixedly arranged on the rotating shaft (28), the driven bevel gear (311) is fixedly arranged at the top end of the transmission shaft (312), the driving bevel gear (310) is in meshed transmission connection with the driven bevel gear (311), a driving wheel (315) is fixedly arranged at the bottom end of the transmission shaft (312), a driven wheel (316) is fixedly arranged at the top end of the reciprocating screw rod (313), and the driving wheel (315) is in meshed transmission connection with the driven wheel (316) through a transmission belt (317).
7. A multi-winding transformer according to claim 5, wherein: the inside of shell body (1) is fixed mounting has a plurality of evenly distributed's optical axis guide rail (37), crane (35) pass through the through-hole slidable mounting in on optical axis guide rail (37).
8. A multi-winding transformer according to claim 1, characterized in that: the liquid inlet end of the oil outlet pipe (23) is connected and installed at the upper end of the outer shell (1), and the liquid outlet end of the spiral radiating pipe (25) extends to the upper end position inside the oil conservator (21).
9. A multi-winding transformer according to claim 1, characterized in that: a plurality of radiating fins (12) which are uniformly distributed are fixedly arranged on the outer wall of the outer shell (1).
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| CN202310858395.8A CN116779292B (en) | 2023-07-13 | 2023-07-13 | Multi-winding transformer |
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| CN202310858395.8A CN116779292B (en) | 2023-07-13 | 2023-07-13 | Multi-winding transformer |
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| CN218159915U (en) * | 2022-08-23 | 2022-12-27 | 蓉中电气股份有限公司 | Oil-immersed transformer with prevent subsiding with stirring structure |
| CN218769007U (en) * | 2022-11-29 | 2023-03-28 | 黄华集团有限公司 | Oil immersed transformer with circulating heat dissipation system |
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| CN105047374A (en) * | 2015-08-25 | 2015-11-11 | 重庆民生变压器有限责任公司 | Helical tube high-elevation cycle cooling transformer |
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| CN116779292B (en) | 2024-05-07 |
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