CN118471653B - Oil immersed transformer - Google Patents
Oil immersed transformer Download PDFInfo
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- CN118471653B CN118471653B CN202410910674.9A CN202410910674A CN118471653B CN 118471653 B CN118471653 B CN 118471653B CN 202410910674 A CN202410910674 A CN 202410910674A CN 118471653 B CN118471653 B CN 118471653B
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- 238000004804 winding Methods 0.000 claims abstract description 15
- 238000009792 diffusion process Methods 0.000 claims abstract description 12
- 238000004200 deflagration Methods 0.000 claims abstract description 6
- 230000017525 heat dissipation Effects 0.000 claims description 48
- 210000001503 joint Anatomy 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 27
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 abstract description 32
- 238000004880 explosion Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 9
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000007599 discharging Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention provides an oil immersed transformer, which belongs to the technical field of transformers and comprises a transformer main body, wherein a fixing piece is arranged in the transformer main body, a winding is arranged above the fixing piece, an insulating layer is arranged on the outer wall of the winding, and radiating fins are fixedly connected to the two symmetrical sides of the transformer main body, and the oil immersed transformer further comprises: the diffusion assembly can regulate and release heat generated when the transformer main body works; and the protection component can prevent the explosion of the transformer main body. The invention has the beneficial effects that: make things convenient for dry powder whereabouts, make the stand inside form wind-force vortex in order to produce a decurrent suction simultaneously, improvement dry powder whereabouts speed that can be better to avoid piling up the caking and can't be through the problem of self gravity whereabouts owing to the dry powder, finally evenly spray the dry powder fast through the relief hole, in order to guarantee the fire extinguishing effect, avoid the secondary deflagration of the oil face that does not catch fire because the spark splashes after the explosion, reduce subsequent loss.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an oil immersed transformer.
Background
The oil immersed transformer is a transformer using oil as main insulating means and oil as cooling medium, and its body is mounted in the oil tank filled with transformer oil, the oil tank is welded by steel plate, and the oil tank of medium and small-sized transformer is formed from tank shell and tank cover, and the body of the transformer is placed in the tank shell.
Although the existing oil immersed transformer has many advantages, certain limitations still exist in the actual use process, because the current and the voltage inside the transformer are at high levels, the emitted heat is very high, the external insulating layer can be gradually corroded due to high temperature or other reasons after long-time use, and the damage of the insulating layer can lead to more impurities and carbon particles in the oil, so that the acidity of the oil is increased, the insulating strength of the oil is reduced, and therefore, when the detecting equipment cannot timely detect the damage of the insulating layer, the problem of insulation breakdown between windings or between windings and the ground can be caused by electric arc generated by high voltage, or when other monitoring equipment cannot detect the explosion condition, the internal insulating oil belongs to inflammable matters, so that the explosion can be caused, the secondary explosion and fire can be caused by the ignition of the insulating oil, the ignition area is further enlarged, and the larger loss is caused; how to invent an oil-immersed transformer to improve these problems becomes a urgent problem for those skilled in the art.
Disclosure of Invention
In order to make up for the defects, the invention provides an oil immersed transformer, which aims to solve the problems that when detection equipment fails to detect in time, internal insulating oil is ignited to explode, and splashed insulating oil can cause secondary explosion and fire disaster to cause larger loss.
The invention is realized in the following way:
The invention provides an oil immersed transformer, which comprises a transformer main body, wherein a fixing piece is arranged in the transformer main body, a winding is arranged above the fixing piece, an insulating layer is arranged on the outer wall of the winding, and radiating fins are fixedly connected to two symmetrical sides of the transformer main body, and the oil immersed transformer further comprises:
The diffusion assembly is fixedly connected with the transformer main body and can regulate and release heat generated by the transformer main body during working;
The protection component is fixedly connected with the transformer main body and can prevent secondary deflagration of the transformer main body;
the pressure regulating component is positioned at the upper end of the transformer main body.
Preferably, the upper end of the transformer main body is provided with a vent hole, the two sides of the transformer main body are provided with discharging holes, and the inner wall of the bottom end of the transformer main body is fixedly connected with the fixing piece.
Preferably, the diffusion subassembly includes fixed frame plate and a heat dissipation section of thick bamboo, fixed frame plate and transformer main part lateral wall fixed connection, fixed frame plate is located the heat dissipation section of thick bamboo outside, heat dissipation section of thick bamboo and transformer main part lateral wall fixed connection, fixed frame plate is close to the one end lateral wall of heat dissipation section of thick bamboo and is equipped with contact switch, the other end of fixed frame plate is equipped with radiator fan, radiator fan and contact switch electrical signal connection.
Through adopting above-mentioned technical scheme, accessible bolt is fixed between fixed frame plate and the radiator fan, has certain clearance between fixed frame plate and the transformer main part to this guarantees that the cooling cylinder has sufficient space to dispel the heat by oneself.
Preferably, one side fixedly connected with flexible gasbag of a heat dissipation section of thick bamboo, the lateral wall fixedly connected with contact block of flexible gasbag, the heat dissipation section of thick bamboo is square setting, the upper end of heat dissipation section of thick bamboo is equipped with the connecting pipe, the other end fixedly connected with shunt tubes of connecting pipe, lateral wall fixedly connected with air duct in the middle of the one end of shunt tubes.
Through adopting above-mentioned technical scheme, after the transformer main part works for a long time, its inside atmospheric pressure can increase gradually, only rely on the unable abundant heat dissipation of cooling cylinder self this moment, thereby can influence the result of use of transformer main part, at this moment the inside expanded gas of transformer main part can strike the shutoff board through the air vent, when impact force is greater than pressure spring's elasticity, pressure spring can be compressed, the inside in the pressure release hole can be entered into through the space between shutoff board and the pressure cylinder this moment to gas, and then circulate the inside of shunt tubes through the air duct, further disperse the inside of a plurality of connecting pipes, finally carry the inside of cooling cylinder with gas, cooperate cooling cylinder self absorbing heat to make flexible gasbag inflation simultaneously, and then drive the contact block and remove to fixed frame plate one side, radiator fan begins working when contact block and contact switch, make the outside air concentrate to blow to fixed frame plate, thereby increase the air circulation speed of flexible gasbag and cooling cylinder both sides, reduce the packing of heat around, in order to improve the radiating efficiency of cooling cylinder, guarantee the normal work of transformer main part.
Preferably, the protection component comprises a fixed frame, a storage vat and an upright post, wherein the upright post is fixedly connected with the upper side wall of the transformer main body, the upper end of the upright post is fixedly connected with the fixed frame, and one end of the upright post is in butt joint with the discharging hole.
Preferably, the engagement hole has been seted up to fixed frame lateral wall, the engagement hole dock with stand and storage vat one end respectively, fixed frame and storage vat fixed connection, the engagement hole diameter is the same with the stand internal diameter, the inner wall fixedly connected with helical blade of stand.
Through adopting above-mentioned technical scheme, can make the air circulate in the stand inside to the effect of cooperation helical blade forms wind-force vortex.
Preferably, one end of the fixed frame is fixedly connected with the air duct, an inner wall of one end of the fixed frame is fixedly connected with a telescopic spring, and a movable sealing plate is slidably connected inside the fixed frame.
Preferably, the chamfer has been seted up to the one end of movable shrouding, the one end fixed connection that the air duct was kept away from to the other end and the extension spring of movable shrouding, the gas leakage hole has been seted up between the both ends lateral wall of movable shrouding, the butt joint hole has been seted up between the upper and lower lateral wall of movable shrouding, the internal diameter in butt joint hole is the same with the stand internal diameter.
Through adopting above-mentioned technical scheme, after the inside initial deflagration that takes place of transformer main part, its inside pressure can increase in the twinkling of an eye, the shutoff board can last to move up at this in-process, and have the one end of chamfer through self lateral wall and movable shrouding and slide the extrusion each other, drive movable shrouding and remove inside the fixed frame, compress telescopic spring simultaneously, this process not only can align butt joint hole and linking hole, so that the inside dry powder whereabouts of storage vat can also a large amount of reduce gas simultaneously to the transportation of air duct, thereby can make the stand inside form the wind-force vortex and produce a decurrent suction, the whereabouts speed of dry powder can be better improvement, can avoid in addition the unable free problem that drops of dry powder of caking, finally, because the atmospheric pressure effect can make shutoff board upper end and movable shrouding flush, and pressure spring can be compressed to the limit this moment, appear in order to avoid the excessive compression of shutoff board and unable condition that resets.
Preferably, the pressure regulating component comprises a pressure cylinder, a pressure spring and a plugging plate, wherein the pressure cylinder is positioned right above the vent hole, one end of the pressure cylinder is fixedly connected with the upper side wall of the transformer main body, and the outer wall of the pressure cylinder is fixedly connected with one end of the fixing frame, which is far away from the air duct.
Preferably, a movable slot hole is formed between the side wall of the pressure cylinder connected with the fixed frame, the inner wall of the movable slot hole is in sliding connection with the movable sealing plate, the inner wall of the upper end of the pressure cylinder is fixedly connected with one end of the pressure spring, the lower end of the pressure spring is fixedly connected with the plugging plate, the plugging plate is in a boss-shaped arrangement, and one end of the plugging plate is in interference fit with the vent hole.
By adopting the technical proposal, the utility model has the advantages that,
The beneficial effects of the invention are as follows:
When the air pressure is increased due to the temperature rise in the transformer main body, the heat dissipation speed of the heat dissipation assembly can be adaptively controlled according to the heat quantity in the transformer while the heat dissipation is carried out through the diffusion assembly, so that the heat dissipation effect is improved, and the waste of resources can be reduced; after the transformer main body knocks, the pressure in the transformer main body can be increased in the moment, and the movable sealing plate is extruded through the sealing plate to reduce the space for mutual dislocation of the butt joint hole and the connecting hole, finally the butt joint hole and the connecting hole are aligned to enlarge the falling space of dry powder, so that the dry powder in the storage vat can conveniently fall down, moreover, the conveying capacity of gas to the inside of the gas guide pipe can be greatly reduced, the inside of the upright post can form a wind-force vortex to generate suction force, so that the foundation is loosened to better fall down, the problem that the dry powder is accumulated and agglomerated and can not fall down through self gravity can be avoided, the dry powder is finally and evenly sprayed through the discharging hole, the fire extinguishing effect is ensured, the secondary knocking of the unfired oil surface caused by splash of sparks after explosion is avoided, and the subsequent loss is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an overall structure of an oil immersed transformer according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of an explosion structure of an oil immersed transformer according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of an internal structure of an oil immersed transformer protection assembly according to an embodiment of the present invention;
fig. 4 is an enlarged schematic diagram of a structure at a in fig. 3 of an oil immersed transformer according to an embodiment of the present invention;
Fig. 5 is a schematic diagram of a semi-sectional structure of a fixing frame of an oil-immersed transformer according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an internal structure of an oil immersed transformer stand column according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an oil immersed transformer protection assembly and a voltage regulating assembly according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a negative blanking process of a storage tank of an oil immersed transformer according to an embodiment of the present invention.
In the figure: 1. a transformer body; 11. a vent hole; 12. a winding; 13. an insulating layer; 14. a fixing member; 15. a discharge hole; 2. a diffusion assembly; 21. fixing the frame plate; 22. a heat radiation fan; 23. a telescopic air bag; 24. a contact block; 25. a heat dissipation cylinder; 26. a connecting pipe; 27. a shunt; 28. an air duct; 29. a contact switch; 3. a protective assembly; 31. a fixed frame; 32. a storage barrel; 33. a column; 34. a helical blade; 35. a telescopic spring; 36. a connection hole; 37. a butt joint hole; 38. a movable sealing plate; 39. a vent hole; 4. a pressure regulating assembly; 41. a pressure cylinder; 42. a pressure spring; 43. a plugging plate; 44. a movable slot; 5. a heat sink.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the invention.
1-8, An oil immersed transformer, including transformer main part 1, the inside of transformer main part 1 is equipped with mounting 14, and the top of mounting 14 is equipped with winding 12, and the outer wall of winding 12 is equipped with insulating layer 13, and the symmetry both sides fixedly connected with fin 5 of transformer main part 1 still include:
The diffusion assembly 2 is fixedly connected with the transformer main body 1, and the diffusion assembly 2 can regulate and release heat generated by the transformer main body 1 during working;
the protection component 3 is fixedly connected with the transformer main body 1, and the protection component 3 can prevent secondary deflagration of the transformer main body 1;
the pressure regulating component 4, the pressure regulating component 4 is located the transformer main part 1 upper end.
Further; the upper end of the transformer main body 1 is provided with a vent hole 11, the two sides of the vent hole 11 of the transformer main body 1 are provided with discharge holes 15, and the inner wall of the bottom end of the transformer main body 1 is fixedly connected with a fixing piece 14; the diffusion assembly 2 comprises a fixed frame plate 21 and a heat dissipation cylinder 25, wherein the fixed frame plate 21 is fixedly connected with the side wall of the transformer main body 1, the fixed frame plate 21 is positioned at the outer side of the heat dissipation cylinder 25, the heat dissipation cylinder 25 is fixedly connected with the side wall of the transformer main body 1, a contact switch 29 is arranged on the side wall of one end, close to the heat dissipation cylinder 25, of the fixed frame plate 21, a heat dissipation fan 22 is arranged on the other end of the fixed frame plate 21, and the heat dissipation fan 22 is in electric signal connection with the contact switch 29; one side of the heat dissipation barrel 25 is fixedly connected with a telescopic air bag 23, the side wall of the telescopic air bag 23 is fixedly connected with a contact block 24, the heat dissipation barrel 25 is square, the upper end of the heat dissipation barrel 25 is provided with a connecting pipe 26, the upper end of the connecting pipe 26 is fixedly connected with a shunt pipe 27, and one end side wall of the shunt pipe 27 is fixedly connected with an air duct 28;
the pressure regulating assembly 4 comprises a pressure cylinder 41, a pressure spring 42 and a blocking plate 43, wherein the pressure cylinder 41 is positioned right above the vent hole 11, one end of the pressure cylinder 41 is fixedly connected with the upper side wall of the transformer main body 1, and the outer wall of the pressure cylinder 41 is fixedly connected with one end of the fixed frame 31 far away from the air duct 28; the side wall that pressure tube 41 links to each other with fixed frame 31 has seted up movable slotted hole 44, and movable slotted hole 44 inner wall and movable shrouding 38 sliding connection, the upper end inner wall of pressure tube 41 and the one end fixed connection of pressure spring 42, the lower extreme and the shutoff board 43 fixed connection of pressure spring 42, shutoff board 43 are boss shape setting, the one end and the air vent 11 interference fit of shutoff board 43.
It should be noted that: the fixing frame plate 21 and the cooling fan 22 can be fixed through bolts so as to be convenient for maintenance and disassembly when the cooling fan 22 is damaged, and a certain gap is reserved between the fixing frame plate 21 and the transformer main body 1, so that the cooling cylinder 25 is ensured to have enough space for cooling;
After the transformer main body 1 works for a long time, because the internal current and voltage are at high level, the heat emitted is very high, the internal air pressure is gradually increased, the heat cannot be rapidly and fully dissipated only by the heat dissipation barrel 25, so that the using effect of the transformer main body 1 is affected, at the moment, the gas expanded in the transformer main body 1 impacts the plugging plate 43 through the vent hole 11, one end of the plugging plate 43 is in interference fit with the vent hole 11, because the lower end of the plugging plate 43 is made of rubber material, the upper end of the plugging plate 43 is made of hard fireproof plate, the transformer main body 1 is made of metal material, the outer diameter of the lower end of the plugging plate 43 is larger than the inner diameter of the vent hole 11, Therefore, the interference fit between the plugging plate 43 and the vent hole 11 is realized under the action of the pressure spring 42, when the air pressure impact force is larger than the elastic force of the pressure spring 42, the pressure spring 42 is compressed, and the plugging plate 43 and the vent hole 11 are notched (but the plugging plate 43 is insufficient to squeeze the movable sealing plate 38 at the moment), so that the air enters the interior of the pressure cylinder 41, the air pressure is continuously impacted due to the generation of a large amount of heat, and at the moment, a large amount of air enters the interior of the air leakage hole 39 through the gap between the plugging plate 43 (the outer diameter of the upper end of the plugging plate 43 is smaller than the inner diameter of the pressure cylinder 41) and the pressure cylinder 41, The movable sealing plate 38 is attached to the inner wall of the fixed frame 31 to avoid the gas flowing from the gap between the two, so that the diffusion of the gas can be reduced to ensure the concentrated discharge of the gas, in addition, the butt joint holes 37 and the connecting holes 36 are staggered with each other to ensure the continuous circulation of the gas after passing through the butt joint holes 37, and then the gas flows into the shunt tubes 27 through the gas guide tube 28, and is further uniformly dispersed into the connecting tubes 26, and because the gas guide tube 28, the shunt tubes 27 and the connecting tubes 26 can be made of good heat conducting metal materials, part of heat can be radiated in advance in the process of circulating hot gas, and the heat radiating tube 25 is also made of good heat conducting metal materials, After the gas is conveyed into the heat dissipation cylinder 25, the capacity of the telescopic air bag 23 and the capacity of the heat dissipation cylinder 25 for storing the gas are increased by matching with the heat absorbed by the heat dissipation cylinder 25, at the moment, the telescopic air bag 23 can be expanded due to the expansion of the gas, so that more gas can be absorbed to improve the absorption of the heat of the transformer main body 1, when the gas absorbed by the telescopic air bag 23 is gradually increased, the contact block 24 is slowly driven to move towards the side of the fixed frame plate 21, the heat dissipation fan 22 is controlled to start working when the contact block 24 is contacted with the contact switch 29, the outside air can be concentrated to blow the fixed frame plate 21 through the heat dissipation fan 22, Thereby increase the circulation of air speed of flexible gasbag 23 and cooling cylinder 25 both sides, reduce the packing of heat around, with the radiating efficiency of improving cooling cylinder 25, guarantee the normal work of transformer main part 1, the inside air input of flexible gasbag 23 can reduce gradually after the temperature drops, and flexible gasbag 23 also can shrink correspondingly, can drive contact block 24 and contact switch 29 separation at this moment, also can control radiator fan 22 stop work correspondingly, avoid external radiator to keep working, reduce the waste of resource, and can drive radiator's use according to self heat condition, reduce personnel's operation, improve degree of automation.
Referring to fig. 3-8, further; the protection component 3 comprises a fixed frame 31, a storage vat 32 and an upright post 33, wherein the upright post 33 is fixedly connected with the upper side wall of the transformer main body 1, the upper end of the upright post 33 is fixedly connected with the fixed frame 31, and one end of the upright post 33 is in butt joint with the discharge hole 15; the side wall of the fixed frame 31 is provided with a connecting hole 36, the connecting hole 36 is respectively in butt joint with one end of the upright post 33 and one end of the storage vat 32, the fixed frame 31 is fixedly connected with the storage vat 32, the diameter of the connecting hole 36 is the same as the inner diameter of the upright post 33, and the inner wall of the upright post 33 is fixedly connected with a helical blade 34; one end of the fixed frame 31 is fixedly connected with the air duct 28, an inner wall of one end of the fixed frame 31 is fixedly connected with a telescopic spring 35, and a movable sealing plate 38 is slidably connected inside the fixed frame 31; chamfer angles are formed at one end of the movable sealing plate 38, the other end of the movable sealing plate 38 is fixedly connected with one end, far away from the air duct 28, of the telescopic spring 35, the side wall of the movable sealing plate 38 is provided with an air leakage hole 39, the side wall of the movable sealing plate 38 is provided with a butt joint hole 37, and the inner diameter of the butt joint hole 37 is identical to that of the upright post 33.
It should be noted that: when the insulating layer 13 is gradually corroded due to high temperature or other reasons after long-term use, so that an arc generated by high voltage electricity causes insulation breakdown between windings 12 or between windings 12 and ground, after insulating oil is ignited to explode, the pressure in the transformer main body 1 is increased instantaneously, the plugging plate 43 further moves upwards, in the process, the upper end self side wall of the plugging plate 43 presses one end of the movable sealing plate 38 with a chamfer, thereby driving the movable sealing plate 38 to move in the fixed frame 31, thereby changing the position of the butt joint hole 37 in the fixed frame 31 for subsequent fire extinguishing, simultaneously the movable sealing plate 38 compresses the telescopic spring 35, the telescopic spring 35 can ensure mutual dislocation of the butt joint hole 37 and the connecting hole 36 in an initial state, the dry powder in the storage vat 32 is prevented from being polluted by cooling oil in the transformer main body 1 due to falling of the dry powder under the action of gravity, in the moving process of the movable sealing plate 38, dislocation of the butt joint hole 37 and the connecting hole 36 is gradually reduced, and finally the butt joint hole 37 is aligned with the connecting hole 36, so that the falling space of the dry powder is enlarged, the falling of the dry powder in the storage vat 32 is facilitated, simultaneously, the conveying amount of the gas in the air guide pipe 28 can be greatly reduced, the upright post 33 can form a wind vortex under the action of the helical blade 34, so that a downward suction force is generated in the upright post 33, the bottom of the dry powder is beaten and blown, the dry powder can fall better after loosening, the risk that the agglomerated dry powder cannot fall freely is avoided, the dry powder is finally and evenly sprayed fast through the discharging hole 15, the fire extinguishing effect is ensured, secondary deflagration of an unfired surface due to splashing of sparks after explosion is avoided, in addition, the pressure spring 42 is compressed to the limit due to the air pressure, and the upper end of the plugging plate 43 is flush with the movable sealing plate 38 at this time, so as to avoid the problem that the plugging plate 43 is excessively compressed and cannot be reset.
The working principle of the oil immersed transformer is as follows: after the transformer main body 1 works for a long time, because the internal current and voltage are at high level, the heat of heat dissipation is very high, the internal air pressure is gradually increased, at the moment, the heat dissipation can not be quickly and fully performed by the heat dissipation cylinder 25, so that the using effect of the transformer main body 1 can be affected, at the moment, the air expanding inside the transformer main body 1 can impact the blocking plate 43 through the air holes 11, when the air pressure impact force is greater than the elastic force of the pressure spring 42, the pressure spring 42 can be compressed, the blocking plate 43 and the air holes 11 are notched, at the moment, a large amount of air can enter the inside of the air leakage hole 39 through the gap between the blocking plate 43 and the pressure cylinder 41, at the moment, the butt joint hole 37 and the joint hole 36 are mutually staggered, the air can be ensured to continuously circulate after passing through the butt joint hole 37, and then the air guide pipe 28 is circulated into the inside of the shunt pipe 27, further evenly dispersed into the plurality of connecting pipes 26, the heat dissipation cylinder 25 is made of good heat conduction metal, after gas is conveyed into the heat dissipation cylinder 25, the heat absorbed by the heat dissipation cylinder 25 is matched, the gas capacity of the telescopic air bag 23 and the inside of the heat dissipation cylinder 25 is increased, at the moment, the telescopic air bag 23 can be expanded due to the expansion of the gas, thereby more gas can be absorbed, the heat absorption of the transformer main body 1 is improved, after the gas absorbed by the telescopic air bag 23 is gradually increased, the contact block 24 is slowly driven to move towards the side of the fixed frame plate 21, when the contact block 24 is contacted with the contact switch 29, the heat dissipation fan 22 is controlled to start working, the outside air can intensively blow the fixed frame plate 21 through the heat dissipation fan 22, thereby the air circulation speed of the telescopic air bag 23 and the two sides of the heat dissipation cylinder 25 is increased, the accumulation of surrounding heat is reduced, so that the heat dissipation efficiency of the heat dissipation cylinder 25 is improved, the normal operation of the transformer main body 1 is ensured, the air inflow of the telescopic air bag 23 is gradually reduced after the temperature is reduced, the telescopic air bag 23 is correspondingly contracted, the contact block 24 is driven to be separated from the contact switch 29 at the moment, the heat dissipation fan 22 is correspondingly controlled to stop working, the continuous operation of external heat dissipation equipment is avoided, and the waste of resources is reduced;
When the insulating layer 13 is gradually corroded due to high temperature or other reasons after long-time use, the electric arc generated by high-voltage electricity is generated to cause insulation breakdown between windings 12 or between windings 12 and the ground, so that after insulating oil is ignited to explode, the pressure inside the transformer main body 1 is increased instantaneously, the plugging plate 43 is moved upwards further, in the process, the upper end side wall of the plugging plate 43 can extrude the side wall of the movable sealing plate 38 with a chamfer, thereby driving the movable sealing plate 38 to move inside the fixed frame 31, so that the position of the butt joint hole 37 inside the fixed frame 31 is changed, preparation is made for subsequent fire extinguishment, meanwhile, the movable sealing plate 38 compresses the telescopic spring 35, the dislocation space between the butt joint hole 37 and the butt joint hole 36 is gradually reduced, the butt joint hole 37 is finally aligned with the butt joint hole 36, so that the dropping space of dry powder is enlarged, dry powder is dropped down conveniently, simultaneously, the conveying quantity inside the gas guide pipe 28 can be greatly reduced, and the effect of the spiral blade 34 can enable the inside the stand 33 to form wind power, thereby generating a vortex inside the stand 33, the dry powder can be well, the dry powder can be ejected down to the next time, the dry powder can be prevented from being blown down by the dry powder, the dry powder can be ejected from the secondary explosion, and the dry powder can not be prevented from being blown off by the secondary explosion, and the dry powder can be ejected by the fire-extinguishing assembly, and the dry powder can be prevented from being blown off by the secondary explosion, and the dry powder by the dry powder can be further well, and the dry powder can be ejected by the dry dust.
It should be noted that, specific model specifications of the motor need to be determined by selecting a model according to actual specifications of the device, and a specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and various modifications and variations may be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides an oil-immersed transformer, includes transformer main part (1), the inside of transformer main part (1) is equipped with mounting (14), the top of mounting (14) is equipped with winding (12), the outer wall of winding (12) is equipped with insulating layer (13), the symmetry both sides fixedly connected with fin (5) of transformer main part (1), its characterized in that still includes:
the diffusion assembly (2) is fixedly connected with the transformer main body (1), and the diffusion assembly (2) can regulate and release heat generated by the transformer main body (1) during operation;
The protection assembly (3) is fixedly connected with the transformer main body (1), and the protection assembly (3) can prevent secondary deflagration of the transformer main body (1);
The voltage regulating assembly (4) is positioned at the upper end of the transformer main body (1);
The upper end of the transformer main body (1) is provided with a vent hole (11), the two sides of the vent hole (11) of the transformer main body (1) are provided with discharge holes (15), and the inner wall of the bottom end of the transformer main body (1) is fixedly connected with a fixing piece (14);
The diffusion assembly (2) comprises a fixed frame plate (21) and a heat dissipation cylinder (25), wherein the fixed frame plate (21) is fixedly connected with the side wall of the transformer main body (1), the fixed frame plate (21) is positioned at the outer side of the heat dissipation cylinder (25), the heat dissipation cylinder (25) is fixedly connected with the side wall of the transformer main body (1), a contact switch (29) is arranged on the side wall of one end, close to the heat dissipation cylinder (25), of the fixed frame plate (21), a heat dissipation fan (22) is arranged on the other end of the fixed frame plate (21), and the heat dissipation fan (22) is in electric signal connection with the contact switch (29);
One side of the radiating cylinder (25) is fixedly connected with a telescopic air bag (23), the side wall of the telescopic air bag (23) is fixedly connected with a contact block (24), the radiating cylinder (25) is square, the upper end of the radiating cylinder (25) is provided with a connecting pipe (26), the upper end of the connecting pipe (26) is fixedly connected with a shunt tube (27), and one end side wall of the shunt tube (27) is fixedly connected with an air duct (28);
the protection assembly (3) comprises a fixed frame (31), a storage vat (32) and an upright post (33), wherein the upright post (33) is fixedly connected with the upper side wall of the transformer main body (1), the upper end of the upright post (33) is fixedly connected with the fixed frame (31), and one end of the upright post (33) is in butt joint with the discharge hole (15);
the side wall of the fixed frame (31) is provided with a connecting hole (36), the connecting hole (36) is respectively in butt joint with one end of the upright post (33) and one end of the storage vat (32), the fixed frame (31) is fixedly connected with the storage vat (32), the diameter of the connecting hole (36) is the same as the inner diameter of the upright post (33), and the inner wall of the upright post (33) is fixedly connected with a helical blade (34);
One end of the fixed frame (31) is fixedly connected with the air duct (28), an inner wall of one end of the fixed frame (31) is fixedly connected with a telescopic spring (35), and a movable sealing plate (38) is slidably connected inside the fixed frame (31);
The movable sealing plate (38) is provided with a chamfer at one end, the other end of the movable sealing plate (38) is fixedly connected with one end, far away from the air duct (28), of the telescopic spring (35), the side wall of the movable sealing plate (38) is provided with an air leakage hole (39), the side wall of the movable sealing plate (38) is provided with a butt joint hole (37), and the inner diameter of the butt joint hole (37) is the same as that of the upright column (33);
The pressure regulating assembly (4) comprises a pressure cylinder (41), a pressure spring (42) and a blocking plate (43), wherein the pressure cylinder (41) is positioned right above the vent hole (11), one end of the pressure cylinder (41) is fixedly connected with the upper side wall of the transformer main body (1), and the outer wall of the pressure cylinder (41) is fixedly connected with one end, far away from the air duct (28), of the fixed frame (31);
The utility model discloses a sealing device for a plastic material, including fixed frame (31) and sealing plate (11), a pressure section of thick bamboo (41), movable slotted hole (44) have been seted up to the lateral wall that links to each other with fixed frame (31), movable slotted hole (44) inner wall and movable shrouding (38) sliding connection, the upper end inner wall of pressure section of thick bamboo (41) and the one end fixed connection of pressure spring (42), the lower extreme and the shutoff board (43) fixed connection of pressure spring (42), shutoff board (43) are boss shape setting, the one end and the air vent (11) interference fit of shutoff board (43).
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| CN202410910674.9A CN118471653B (en) | 2024-07-09 | 2024-07-09 | Oil immersed transformer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410910674.9A CN118471653B (en) | 2024-07-09 | 2024-07-09 | Oil immersed transformer |
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| CN118471653B true CN118471653B (en) | 2024-09-20 |
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| CN119132803B (en) * | 2024-11-14 | 2025-05-02 | 江苏华瑜变压器有限公司 | Anti-interference transformer with cooling structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994375A (en) * | 2019-12-24 | 2020-04-10 | 缙云叶普电子科技有限公司 | Voltage stabilization protection device based on emergency circuit |
| CN112217119A (en) * | 2020-09-25 | 2021-01-12 | 南京觉典网络科技有限公司 | Intelligent environment-friendly cable box with automatic fire extinguishing function |
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| CN112909799A (en) * | 2021-03-24 | 2021-06-04 | 盐城市青竹商贸有限公司 | Switch board with automatic heat dissipation and function of putting out a fire |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994375A (en) * | 2019-12-24 | 2020-04-10 | 缙云叶普电子科技有限公司 | Voltage stabilization protection device based on emergency circuit |
| CN112217119A (en) * | 2020-09-25 | 2021-01-12 | 南京觉典网络科技有限公司 | Intelligent environment-friendly cable box with automatic fire extinguishing function |
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