CN114141477A - Double-winding oil-immersed transformer capable of reducing no-load loss - Google Patents
Double-winding oil-immersed transformer capable of reducing no-load loss Download PDFInfo
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- CN114141477A CN114141477A CN202111230795.1A CN202111230795A CN114141477A CN 114141477 A CN114141477 A CN 114141477A CN 202111230795 A CN202111230795 A CN 202111230795A CN 114141477 A CN114141477 A CN 114141477A
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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
- H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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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
- H01F27/33—Arrangements for noise damping
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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
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/341—Preventing or reducing no-load losses or reactive currents
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- General Engineering & Computer Science (AREA)
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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to the technical field of distribution equipment, and particularly discloses a double-winding oil-immersed transformer capable of reducing no-load loss. Through the structure setting, can reduce the vibrations of its transformer main part to this avoids causing the damage to transformer self inner structure, avoids the shaking force that the transformer produced to lead to producing structural noise between transformer and the fixing base in addition, prevents to influence resident's rest at night.
Description
Technical Field
The invention relates to the technical field of distribution equipment, in particular to a double-winding oil-immersed transformer capable of reducing no-load loss.
Background
At present, a transformer is one of important devices in a power grid, the reduction of transformer loss has important economic significance on the development of the power grid, energy conservation, safety and environmental protection are achieved, and for transformer manufacturers and power grid construction, the low-loss transformer needs to be manufactured or used.
Wherein, bifilar oil-immersed transformer is as one kind of transformer, but current bifilar oil-immersed transformer is rigid connection with the fixing base usually, lacks buffer structure, and the transformer causes the damage to self inner structure easily at the in-process of vibrations, and the shaking force that the transformer produced also can make and produce the structural noise between transformer and the fixing base moreover, influences resident's rest at night.
Disclosure of Invention
The invention aims to provide a double-winding oil-immersed transformer capable of reducing no-load loss, and aims to solve the technical problems that in the prior art, the double-winding oil-immersed transformer is generally in rigid connection with a fixed seat, a buffer structure is lacked, the transformer is easy to damage the internal structure of the transformer in the vibration process, structural noise is generated between the transformer and the fixed seat due to the vibration force generated by the transformer, and the rest of residents at night is influenced.
In order to achieve the above purpose, the dual-winding oil-immersed transformer capable of reducing no-load loss adopted in the present invention comprises a transformer main body, a fixed seat and two sets of first buffer units, wherein the transformer main body and the fixed seat are connected through two sets of first buffer units symmetrically arranged, each set of first buffer unit comprises two bottom blocks, two connecting rods, two sliding blocks, a first elastic member, a mounting seat, an inner cylinder, an outer cylinder and a second elastic member, the two bottom blocks are fixedly connected with the transformer main body, one end of each connecting rod is hinged with the corresponding bottom block, the other end of each connecting rod is hinged with the corresponding sliding block, the mounting seat is provided with a sliding groove, one end of each sliding block far away from the connecting rod is slidably arranged in the sliding groove, and two ends of the first elastic member are fixedly connected with the two sliding blocks, and be located two between the slider, the one end of inner tube with mount pad fixed connection, the other end of inner tube with urceolus sliding connection, just the urceolus cover is established the outside of inner tube, the urceolus is kept away from the one end of inner tube with fixing base fixed connection, the both ends of second elastic component respectively with the mount pad with fixing base fixed connection, just the second elastic component cover is established the urceolus with the outside of inner tube.
When the transformer body vibrates during working or vibrates under the action of external force, namely the transformer body moves downwards, the two bottom blocks move downwards to abut against the corresponding connecting rods, the connecting rods further rotate, the two connecting rods abut against the corresponding sliding blocks to slide in the sliding grooves, the two sliding blocks are close to each other to compress the first elastic piece, the vibration of the transformer body can be reduced through the elastic force of the first elastic piece, in addition, part of component force can be applied to the inner cylinder while the first elastic piece is compressed, one part of the inner cylinder slides to the inner part of the outer cylinder, meanwhile, the second elastic piece is compressed after being stressed, the vibration of the transformer body can be reduced through the elastic force of the second elastic piece, and therefore the damage to the internal structure of the transformer is avoided, in addition, the vibration force generated by the transformer is prevented from causing structural noise between the transformer and the fixed seat, and the influence on the rest of residents at night is prevented.
Wherein the first buffer unit further comprises two fixed rods, two pulleys, two moving blocks, two third elastic pieces and two telescopic rods, each fixed rod is fixedly connected with the mounting seat, and is positioned below the mounting seat, each pulley is rotationally connected with the fixed rod and is positioned below the fixed rod, each moving block is slidably connected with the fixed seat, the inclined surface of the moving block is contacted with the pulley, the top end surface of each moving block is provided with a moving groove, one end of each telescopic rod is fixedly connected with the bottom block, the other end of each telescopic rod is arranged in the moving groove, and the telescopic rod is connected with the moving grooves in a sliding manner, the third elastic piece is arranged in each moving groove, and two ends of each third elastic piece are respectively fixedly connected with the moving grooves and the telescopic rod.
When the mounting seat moves downwards under the action of vibration force, the fixed rod moves downwards along with the mounting seat, so that the pulley slides on the inclined surface of the moving block, meanwhile, the moving block moves relative to the fixing seat after being stressed, namely, the moving block moves towards the direction away from the outer cylinder, the moving groove moves relative to the telescopic rod, the third elastic piece is compressed after being stressed, and the vibration force or the received vibration force generated by the transformer is reduced by utilizing the elasticity of the third elastic piece, so that the damage to the internal structure of the transformer is avoided.
The double-winding oil-immersed transformer capable of reducing no-load loss further comprises two groups of second buffer units symmetrically arranged on two sides of the transformer main body, each group of second buffer units comprises two upper side rods, two lower side rods, two linkage rods, two side blocks and a fourth elastic part, side grooves are formed in two side walls of the fixing base, each side groove is internally provided with two side blocks in a sliding mode, one end of each side block is fixedly connected with the lower side rods, the two upper side rods are fixedly connected with the transformer main body, two ends of each linkage rod are respectively connected with the corresponding upper side rods and the corresponding lower side rods in a rotating mode, two ends of the fourth elastic part are fixedly connected with the two side blocks, and the fourth elastic part is located in the side grooves.
When the transformer body vibrates during working or vibrates under the action of external force, namely the transformer body moves downwards, the two linkage rods positioned on the same side of the transformer body rotate and then abut against the corresponding side blocks, so that the two side blocks slide in the side grooves in opposite directions, the fourth elastic piece is stretched, and the self elastic restoring force of the fourth elastic piece is utilized to reduce the vibration force or the received vibration force generated by the transformer, thereby avoiding damaging the internal structure of the transformer.
The transformer comprises a transformer body, a high-voltage bushing, a low-voltage bushing and an oil level gauge, wherein corrugated plate radiators are fixedly mounted on four sides of the transformer body, a supporting plate is fixedly mounted at the top of the transformer body, the top of the supporting plate is respectively and fixedly provided with the high-voltage bushing, the low-voltage bushing is positioned behind the high-voltage bushing, a lower yoke is fixedly mounted in the middle of the bottom of the inner wall of the transformer body, three iron cores are fixedly mounted at the top of the lower yoke, an upper yoke is fixedly mounted at the top of each iron core, oil through holes are formed in the inner surface of the transformer body and one side of each corrugated plate radiator in a penetrating mode, and transformer oil is arranged inside the transformer body;
the iron core is low-loss, low-hysteresis, high magnetic conduction high-quality silicon steel sheet, the surface fixed mounting of iron core has low-voltage winding, low-voltage winding includes two other low-voltage coil and the insulating two-sided adhesive tape of second, through the insulating two-sided adhesive tape fixed connection of second between two low-voltage coil, the surface fixed mounting of low-voltage winding has the semi-viscous glass fiber area of second epoxy, the surface of the semi-viscous glass fiber area of second epoxy personally submits annular fixed mounting to have the stay, one side fixed mounting of stay has high-voltage winding, high-voltage winding includes two high-voltage coil and the first insulating two-sided adhesive tape, passes through between two high-voltage coil first insulating two-sided adhesive tape fixed connection, the surface fixed mounting of high-voltage winding has the semi-viscous glass fiber area of first epoxy.
Through the matching use of the iron core, the high-voltage winding, the high-voltage coil, the first insulating double-sided adhesive dispensing paper, the low-voltage winding, the low-voltage coil and the second insulating double-sided adhesive dispensing paper, the structure of the iron core, the low-voltage winding and the high-voltage winding is optimized, the purpose of reducing loss and noise is achieved, the no-load loss and the load loss of the transformer main body meet the energy efficiency level requirement of an energy-saving evaluation value, the loss is reduced, energy and cost are saved, the economic effect is improved, the mechanical strength is improved through the first epoxy resin semi-viscous glass fiber tape and the second epoxy resin semi-viscous glass fiber tape which are arranged outside the high-voltage winding and the low-voltage winding, and as the high-voltage coil, the low-voltage coil and the iron core are all dried in vacuum, the transformer oil adopts a vacuum oil filtering and oil injecting process, make the moisture of the inside of transformer main part reduces to minimumly, and the inside transformer oil of transformer main part gets into through logical oil mouth the inside of corrugated sheet radiator has adopted the corrugated sheet radiator to replace traditional oil storage bucket, makes transformer oil keep apart with the external world, and has respiratory function and compensates the volume change that arouses oil because of temperature variation to the reliability of messenger's product has been strengthened.
And hanging seats are fixedly arranged on two sides of the top of the supporting plate, and each hanging seat is provided with a fixing hole for a hanging rope to pass through.
The transformer body can be conveniently hoisted by the aid of the hoisting seats.
And a coil oil passage is formed between the outer surface of the second epoxy resin semi-viscous glass fiber tape and the inner surface of the high-voltage winding.
According to the double-winding oil-immersed transformer capable of reducing no-load loss, when the transformer body vibrates during working or vibrates under the action of external force, namely the transformer body moves downwards, at the moment, the two bottom blocks move downwards to butt against the corresponding connecting rods, so that the connecting rods rotate, the two connecting rods butt against the corresponding sliding blocks to slide in the sliding grooves, the two sliding blocks approach to each other to compress the first elastic part, the vibration of the transformer body can be reduced through the self elastic force of the first elastic part, in addition, when the first elastic part is compressed, a part of force can be applied to the inner cylinder, one part of the inner cylinder slides into the outer cylinder, meanwhile, the second elastic part is compressed after being stressed, and the vibration of the transformer body can be reduced through the elastic force of the second elastic part, avoid causing the damage to transformer self inner structure with this, avoid the shaking force that the transformer produced to lead to producing structural noise between transformer and the fixing base in addition, prevent to influence resident's rest at night.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of the structural principle of the double-winding oil-immersed transformer capable of reducing no-load loss according to the invention.
Fig. 2 is an enlarged view of a portion of the structure of fig. 1 according to the present invention.
Fig. 3 is an enlarged view of a portion of the structure of fig. 1B according to the present invention.
Fig. 4 is an enlarged view of a portion of the structure of fig. 1 at C.
Fig. 5 is a front view of fig. 1 of the present invention.
Fig. 6 is a side view of fig. 1 of the present invention.
Fig. 7 is an enlarged view of a portion of the structure of fig. 6 at E-E in accordance with the present invention.
Fig. 8 is an enlarged view of a portion of the structure of fig. 7 at F according to the present invention.
Fig. 9 is an enlarged view of a portion of the structure of fig. 5D according to the present invention.
Fig. 10 is an external structural view of a transformer body of the present invention.
Fig. 11 is a schematic view of the internal structure of the transformer body of the present invention.
Fig. 12 is a schematic view of the internal structure of the iron core of the present invention.
1-transformer body, 2-corrugated sheet radiator, 4-support plate, 5-hanging seat, 6-high voltage bushing, 7-low voltage bushing, 8-oil level indicator, 9-transformer oil, 10-upper yoke, 11-iron core, 12-stay, 13-oil through opening, 14-lower yoke, 15-high voltage winding, 16-high voltage coil, 17-first insulating double-sided adhesive tape, 18-first epoxy resin semi-viscous glass fiber tape, 19-low voltage winding, 20-low voltage coil, 21-second insulating double-sided adhesive tape, 22-second epoxy resin semi-viscous glass fiber tape, 23-coil oil duct, 24-fixed seat, 241-side groove, 25-first buffer unit, 251-bottom block, 252-connecting rod, 253-sliding block, 254-first elastic element, 255-mounting seat, 256-sliding groove, 257-inner cylinder, 258-outer cylinder, 259-second elastic element, 260-fixed rod, 261-pulley, 262-moving block, 2621-moving groove, 263-third elastic element, 264-telescopic rod, 27-second buffer unit, 271-upper rod, 272-lower rod, 273-linkage rod, 274-side block, 275-fourth elastic element, 28-damping unit, 281-vertical plate, 2811-groove, 282-transverse plate, 2821-extending groove, 283-sleeve frame, 284-reciprocating rod, 285-movable frame, 286-first side rod body, 287-second side rod body, 288-sixth elastic element, 289-U-shaped rod, 2891-seventh elastic element, 2892-upper L-shaped rod, 2893-lower L-shaped rod, 2894-eighth elastic element, 2895-upper top column, 2896-ninth elastic element, 2897-splicing column, 2898-tenth elastic element, 29-matching unit, 291-linkage plate, 292-translation block, 293-adaptation block, 294-fifth elastic element, 30-pressing column, 31-movable plate, 32-stabilizing seat, 321-guide groove and 33-recessed groove.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 12, the present invention provides a dual-winding oil-immersed transformer capable of reducing no-load loss, including a transformer body 1, a fixed seat 24, and two sets of first buffer units 25, where the transformer body 1 is connected to the fixed seat 24 through two sets of first buffer units 25 symmetrically disposed, each set of first buffer unit 25 includes two bottom blocks 251, two connecting rods 252, two sliding blocks 253, a first elastic element 254, a mounting seat 255, an inner cylinder 257, an outer cylinder 258, and a second elastic element 259, the two bottom blocks 251 are fixedly connected to the transformer body 1, one end of each connecting rod 252 is hinged to the corresponding bottom block 251, the other end of each connecting rod 252 is hinged to the corresponding sliding block 253, the mounting seat 255 has a sliding groove 256, one end of the sliding block 253, which is far away from the connecting rod 252, is slidably disposed in the sliding groove 256, the both ends of first elastic component 254 and two slider 253 fixed connection, and be located two between the slider 253, the one end of inner tube 257 with mount pad 255 fixed connection, the other end of inner tube 257 with urceolus 258 sliding connection, just urceolus 258 cover is established the outside of inner tube 257, urceolus 258 is kept away from the one end of inner tube 257 with fixing base 24 fixed connection, the both ends of second elastic component 259 respectively with mount pad 255 with fixing base 24 fixed connection, just second elastic component 259 cover is established the urceolus 258 with the outside of inner tube 257.
In this embodiment, when the transformer body 1 vibrates or vibrates under external force during operation, that is, the transformer body 1 moves downward, at this time, the two bottom blocks 251 move downward to abut against the corresponding connecting rods 252, and further the connecting rods 252 rotate, the two connecting rods 252 abut against the corresponding sliding blocks 253 to slide in the sliding grooves 256, the two sliding blocks 253 approach each other to compress the first elastic members 254, and the vibration of the transformer body 1 can be reduced by the elastic force of the first elastic members 254, and in addition, when the first elastic members 254 compress, a component force is also applied to the inner cylinder 257, a part of the inner cylinder 257 slides into the outer cylinder 258, and simultaneously, when the second elastic members 259 compress under force, the vibration of the transformer body 1 can be reduced by the elastic force of the second elastic members 259, avoid causing the damage to transformer self inner structure with this, avoid the shaking force that the transformer produced to lead to producing structural noise between transformer and the fixing base 24 in addition, prevent to influence resident's rest at night.
Further, the first buffer unit 25 further includes two fixed rods 260, two pulleys 261, two moving blocks 262, two third elastic members 263 and two telescopic rods 264, each fixed rod 260 is fixedly connected to the mounting base 255 and is located below the mounting base 255, each pulley 261 is rotatably connected to the fixed rod 260 and is located below the fixed rod 260, each moving block 262 is slidably connected to the fixing base 24, an inclined surface of the moving block 262 is in contact with the pulley 261, a moving groove 2621 is formed in a top end surface of each moving block 262, one end of each telescopic rod 264 is fixedly connected to the bottom block 251, the other end of each telescopic rod 264 is disposed in the moving groove 2621, the telescopic rod 264 is slidably connected to the moving groove 2621, the third elastic member 263 is disposed in each moving groove 2621, both ends of the third elastic member 263 are respectively and fixedly connected with the moving groove 2621 and the telescopic rod 264.
In this embodiment, when the mounting seat 255 moves down due to a vibration force, the fixed rod 260 moves down along with the movement of the pulley 261 on the inclined surface of the moving block 262, and the moving block 262 moves relative to the fixing seat 24 after being stressed, that is, the moving block 262 moves in a direction away from the outer cylinder 258, so that the moving groove 2621 moves relative to the telescopic rod 264, and the third elastic member 263 compresses after being stressed, so that the vibration force generated by the transformer or the received vibration force is reduced by using the elastic force of the third elastic member 263, thereby avoiding damage to the internal structure of the transformer.
Further, the double-winding oil-immersed transformer capable of reducing no-load loss further comprises two groups of second buffer units 27 symmetrically arranged at two sides of the transformer main body 1, each group of second buffer units 27 comprises two upper side rods 271, two lower side rods 272, two linkage rods 273, two side blocks 274 and a fourth elastic piece 275, two side walls of the fixed seat 24 are provided with side grooves 241, two side blocks 274 are slidably arranged in each side groove 241, one end of each side block 274 is fixedly connected with the lower side bar 272, two upper side bars 271 are fixedly connected with the transformer body 1, two ends of each linkage rod 273 are rotatably connected with the corresponding upper side bar 271 and lower side bar 272, both ends of the fourth elastic member 275 are fixedly connected to the two side blocks 274, respectively, and the fourth elastic member 275 is located in the side groove 241.
In this embodiment, when the transformer body 1 vibrates or vibrates under external force during operation, that is, the transformer body 1 moves downward, the two linkage rods 273 on the same side of the transformer body 1 rotate and then abut against the corresponding side blocks 274, so that the two side blocks 274 slide in the side grooves 241 in opposite directions, thereby stretching the fourth elastic member 275, and reducing the vibration force generated or received by the transformer by using the elastic restoring force of the fourth elastic member 275, thereby avoiding damage to the internal structure of the transformer.
Furthermore, corrugated sheet radiators 2 are fixedly mounted on four sides of the transformer main body 1, a support plate 4 is fixedly mounted on the top of the transformer main body 1, a high-voltage bushing 6, a low-voltage bushing 7 and an oil level indicator 8 are respectively fixedly mounted on the top of the support plate 4, the low-voltage bushing 7 is located behind the high-voltage bushing 6, a lower yoke 14 is fixedly mounted in the middle of the bottom of the inner wall of the transformer main body 1, three iron cores 11 are fixedly mounted on the top of the lower yoke 14, an upper yoke 10 is fixedly mounted on the top of each iron core 11, oil through holes 13 are formed in the inner surface of the transformer main body 1 and one side of each corrugated sheet radiator 2 in a penetrating manner, and transformer oil 9 is arranged inside the transformer main body 1;
the iron core 11 is a high-quality silicon steel sheet with low loss, low magnetic hysteresis and high magnetic permeability, the outer surface of the iron core 11 is fixedly provided with a low-voltage winding 19, the low-voltage winding 19 comprises another two low-voltage coils 20 and second insulating double-sided adhesive tape 21, the two low-voltage coils 20 are fixedly connected through the second insulating double-sided adhesive tape 21, a second epoxy resin semi-adhesive glass fiber tape 22 is fixedly arranged on the outer surface of the low-voltage winding 19, the outer surface of the second epoxy resin semi-adhesive glass fiber belt 22 is annularly and fixedly provided with a stay 12, a high-voltage winding 15 is fixedly mounted on one side of the stay 12, the high-voltage winding 15 comprises two high-voltage coils 16 and first insulating double-sided adhesive dispensing paper 17, the two high-voltage coils 16 are fixedly connected through the first insulating double-sided adhesive dispensing paper 17, a first epoxy resin semi-viscous glass fiber tape 18 is fixedly arranged on the outer surface of the high-voltage winding 15;
hanging seats 5 are fixedly arranged on two sides of the top of the supporting plate 4, and each hanging seat 5 is provided with a fixing hole for a hanging rope to pass through;
a coil oil passage 23 is formed between the outer surface of the second epoxy resin semi-adhesive glass fiber tape 22 and the inner surface of the high-voltage winding 15.
In the present embodiment, by using the iron core 11, the high-voltage winding 15, the high-voltage coil 16, the first insulating double-sided adhesive dispensing paper 17, the low-voltage winding 19, the low-voltage coil 20 and the second insulating double-sided adhesive dispensing paper 21 in combination, the structure of the iron core 11, the low-voltage winding 19 and the high-voltage winding 15 is optimized to achieve the purpose of reducing loss and noise, so that the no-load loss and the load loss of the transformer body 1 both meet the energy efficiency level requirement of the energy-saving evaluation value, the loss is reduced, the energy and cost are saved, the economic effect is improved, the mechanical strength is increased by the first epoxy resin semi-viscous glass fiber tape 18 and the second epoxy resin semi-viscous glass fiber tape 22 which are arranged outside the high-voltage winding 15 and the low-voltage winding 19, and because the high-voltage coil 16, the low-voltage coil 20 and the iron core 11 are all dried in vacuum, the transformer oil 9 adopts vacuum oil filtering and oil injection process, makes the moisture in the inside of transformer main body 1 is reduced to minimum, and the transformer oil 9 in the inside of transformer main body 1 enters through oil through 13 the inside of corrugated sheet radiator 2 has adopted corrugated sheet radiator 2 to replace traditional oil storage bucket, makes transformer oil 9 keep apart with the external world, and has the breathing function and compensates the volume change that arouses oil because of temperature variation to make the reliability of product strengthened, the setting of hanging seat 5 can be conveniently right transformer main body 1 hoists.
Further, the double-winding oil-immersed transformer capable of reducing no-load loss further comprises a pressing column 30, a movable plate 31, a stabilizing base 32, two sets of damping units 28 and two sets of matching units 29, wherein the pressing column 30 is fixedly connected with the transformer body 1 and is located below the transformer body 1, the other end of the pressing column 30 penetrates through the fixed base 24 and is fixedly connected with the movable plate 31, the two sets of damping units 28 are arranged between the fixed base 24 and the stabilizing base 32, each set of damping units 28 comprises a vertical plate 281, a transverse plate 282, a sleeve frame 283, a reciprocating rod 284, a movable frame 285, a first side rod 286 and a second side rod 287, two ends of the vertical plate 281 are respectively and fixedly connected with the fixed base 24 and the stabilizing base 32, a through groove 2811 is formed in the vertical plate 281, one end of the transverse plate 282 is fixedly connected with the vertical plate 281, the other end of diaphragm 282 with cover frame 283 fixed connection, reciprocating lever 284 with cover frame 283 sliding connection, just reciprocating lever 284 runs through cover frame 283, movable frame 285 with fly leaf 31 sliding connection, and the cover is established the outside of fly leaf 31, first side body of rod 286 with the one end of second side body of rod 287 all with movable frame 285 rotates and is connected, the other end of first side body of rod 286 with riser 281 rotates and is connected, the other end of second side body of rod 287 with reciprocating lever 284 rotates and is connected, and is two sets of cooperation unit 29 all sets up on corresponding reciprocating lever 284, and every group cooperation unit 29 includes linkage plate 291, translation piece 292, adaptation piece 293 and fifth elastic member 294, be provided with two guide slots 321 on the steady seat 32, and two guide slots 321 sets up in a staggered way, every all slide in the guide slot 321 and be provided with adaptation piece 293, two ends of the fifth elastic element 294 are respectively fixedly connected with the adapter block 293 and the inner wall of the guide groove 321, the fifth elastic element 294 is located inside the guide groove 321, the linkage plate 291 is fixedly connected with the reciprocating rod 284, the two linkage plates 291 are arranged in a staggered manner, the translation block 292 is fixedly connected with the linkage plate 291 and located at one end of the linkage plate 291, which is far away from the reciprocating rod 284, and an inclined surface on the translation block 292 is matched with an inclined surface on the adapter block 293.
The damping unit 28 further includes a sixth elastic member 288 and a U-shaped rod 289, wherein one end of the U-shaped rod 289 is fixedly connected to the movable plate 31, the other end of the U-shaped rod 289 passes through the through slot 2811, one end of the sixth elastic member 288 is fixedly connected to the other end of the U-shaped rod 289, and the other end of the sixth elastic member 288 is fixedly connected to the fixed seat 24.
The damping unit 28 further includes a seventh elastic member 2891, one end of the seventh elastic member 2891 is fixedly connected to the vertical plate 281, and the other end of the seventh elastic member 2891 is fixedly connected to the reciprocating rod 284.
The shock absorption unit 28 further includes an upper L-shaped rod 2892, a lower L-shaped rod 2893 and an eighth elastic member 2894, one end of the upper L-shaped rod 2892 is fixedly connected to the linkage plate 291, one end of the lower L-shaped rod 2893 is fixedly connected to the vertical plate 281, the other end of the upper L-shaped rod 2892 is slidably connected to the lower L-shaped rod 2893, the other end of the lower L-shaped rod 2893 is slidably connected to the upper L-shaped rod 2892, and two ends of the eighth elastic member 2894 are respectively fixedly connected to the upper L-shaped rod 2892 and the lower L-shaped rod 2893.
The lower end surface of the transverse plate 282 has an extension slot 2821, the damping unit 28 further includes an upper prop 2895 and a ninth elastic member 2896, one end of the upper prop 2895 is fixedly connected to the upper L-shaped rod 2892, the other end of the upper prop 2895 is disposed in the extension slot 2821 and is slidably connected to the extension slot 2821, one end of the ninth elastic member 2896 is fixedly connected to the inner wall of the extension slot 2821, and the other end of the ninth elastic member 2896 is fixedly connected to the other end of the upper prop 2895.
In this embodiment, when the transformer body 1 vibrates or vibrates due to external force during operation, that is, the transformer body 1 moves downward to drive the compression cylinder 30 to move so as to abut against the movable plate 31 to slide downward, and then the first side rod 286 and the second side rod 287 rotate at corresponding angles, and at the same time, the two movable frames 285 slide on the movable plate 31, and the two movable frames 285 approach each other, and at this time, along with the downward movement of the movable plate 31, the reciprocating rod 284 is driven to slide relative to the sleeve frame 283 to form a sliding motion in which the two reciprocating rods 284 approach each other, and then the seventh elastic member 2891 stretches after receiving force, and a part of vibration force can be reduced by the elastic force of the seventh elastic member 2891, and when the two reciprocating rods 284 approach each other to slide, the two linkage plates 291 can be driven to approach each other, so that the two translation blocks 292 approach each other, and as the inclined surfaces of the translation blocks 292 and the inclined surfaces of the adaptation blocks 293 are adapted to each other, the adaptation blocks 293 can be abutted to slide in the guide grooves 321 along with the movement of the translation blocks 292, so that the fifth elastic members 294 are compressed, and the vibration force of the fifth elastic members 294 is reduced by using the elastic force of the fifth elastic members 294.
In addition, in the process that the two linkage plates 291 approach each other, the other end of the upper L-shaped rod 2892 slides on the lower L-shaped rod 2893, the other end of the lower L-shaped rod 2893 slides on the upper L-shaped rod 2892, and then the eighth elastic member 2894 is compressed after being stressed, and the vibration force of the eighth elastic member 2894 is reduced by using the elastic force of the eighth elastic member 2894; in addition, during the sliding process of the upper L-shaped rod 2892, one end of the upper prop 2895 is driven to move in the extension slot 2821, and then the upper prop 2895 stretches the ninth elastic member 2896, so that the vibration force of the ninth elastic member 2896 is reduced.
In addition, during the downward movement of the movable plate 31, the U-shaped rod 289 is driven to move downward along the through slot 2811, and then the U-shaped rod 289 compresses the sixth elastic member 288, and the vibration force of the sixth elastic member 288 is reduced by using the elastic force of the sixth elastic member 288, wherein when the U-shaped rod 289 moves downward along the through slot 2811 and compresses the sixth elastic member 288, the splicing column 2897 is forced to move downward, the splicing column 2897 slides in the recessed slot 33, and then the tenth elastic member 2898 is stretched, and by using the elastic restoring force of the tenth elastic member 2898, a good damping effect can be achieved, so as to more effectively protect the transformer body 1.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A double-winding oil-immersed transformer capable of reducing no-load loss is characterized in that,
the transformer comprises a transformer main body, a fixing seat and two groups of first buffer units, wherein the transformer main body is connected with the fixing seat through the two groups of first buffer units which are symmetrically arranged, each group of first buffer units comprises two bottom blocks, two connecting rods, two sliding blocks, a first elastic part, a mounting seat, an inner cylinder, an outer cylinder and a second elastic part, the two bottom blocks are fixedly connected with the transformer main body, one end of each connecting rod is hinged with the corresponding bottom block, the other end of each connecting rod is hinged with the corresponding sliding block, the mounting seat is provided with a sliding groove, one end, far away from the connecting rod, of each sliding block is arranged in the sliding groove in a sliding manner, two ends of each first elastic part are fixedly connected with the two sliding blocks and are positioned between the two sliding blocks, one end of the inner cylinder is fixedly connected with the mounting seat, and the other end of the inner cylinder is slidably connected with the outer cylinder, and the outer barrel is sleeved outside the inner barrel, one end of the inner barrel, far away from the outer barrel, is fixedly connected with the fixing seat, two ends of the second elastic part are respectively fixedly connected with the mounting seat and the fixing seat, and the second elastic part is sleeved outside the outer barrel and the inner barrel.
2. The dual-winding oil-filled transformer capable of reducing no-load loss according to claim 1,
the first buffer unit further comprises two fixed rods, two pulleys, two moving blocks, two third elastic pieces and two telescopic rods, each fixed rod is fixedly connected with the mounting seat and located below the mounting seat, each pulley is rotatably connected with the fixed rod and located below the fixed rod, each moving block is connected with the corresponding fixed seat in a sliding mode, the inclined surface of each moving block is in contact with the corresponding pulley, a moving groove is formed in the top end face of each moving block, one end of each telescopic rod is fixedly connected with the corresponding bottom block, the other end of each telescopic rod is arranged in the corresponding moving groove, the telescopic rods are connected with the corresponding moving grooves in a sliding mode, the third elastic pieces are arranged in the corresponding moving grooves, and two ends of each third elastic piece are fixedly connected with the corresponding moving groove and the corresponding telescopic rod respectively.
3. The dual-winding oil-filled transformer capable of reducing no-load loss according to claim 1,
the double-winding oil-immersed transformer capable of reducing no-load loss further comprises two groups of second buffer units symmetrically arranged on two sides of the transformer main body, each group of second buffer units comprises two upper side rods, two lower side rods, two linkage rods, two side blocks and a fourth elastic part, side grooves are formed in two side walls of the fixing base, each side groove is internally provided with two side blocks in a sliding mode, each side block is fixedly connected with one end of each side block, the lower side rods are fixedly connected with the upper side rods, two ends of each linkage rod correspond to the upper side rods and the lower side rods in a rotating mode, two ends of the fourth elastic part are fixedly connected with the side blocks, and the fourth elastic part is located in the side grooves.
4. The dual-winding oil-filled transformer capable of reducing no-load loss according to claim 1,
the transformer comprises a transformer body, and is characterized in that corrugated sheet radiators are fixedly mounted on four sides of the transformer body, a supporting plate is fixedly mounted at the top of the transformer body, a high-voltage sleeve, a low-voltage sleeve and an oil level indicator are fixedly mounted at the top of the supporting plate respectively, the low-voltage sleeve is positioned behind the high-voltage sleeve, a lower yoke is fixedly mounted in the middle of the bottom of the inner wall of the transformer body, three iron cores are fixedly mounted at the top of the lower yoke, an upper yoke is fixedly mounted at the top of each iron core, oil through holes are formed in the inner surface of the transformer body and one side of each corrugated sheet radiator in a penetrating manner, and transformer oil is arranged in the transformer body;
the iron core is low-loss, low-hysteresis, high magnetic conduction high-quality silicon steel sheet, the surface fixed mounting of iron core has low-voltage winding, low-voltage winding includes two other low-voltage coil and the insulating two-sided adhesive tape of second, through the insulating two-sided adhesive tape fixed connection of second between two low-voltage coil, the surface fixed mounting of low-voltage winding has the semi-viscous glass fiber area of second epoxy, the surface of the semi-viscous glass fiber area of second epoxy personally submits annular fixed mounting to have the stay, one side fixed mounting of stay has high-voltage winding, high-voltage winding includes two high-voltage coil and the first insulating two-sided adhesive tape, passes through between two high-voltage coil first insulating two-sided adhesive tape fixed connection, the surface fixed mounting of high-voltage winding has the semi-viscous glass fiber area of first epoxy.
5. The dual-winding oil-filled transformer capable of reducing no-load loss according to claim 4,
and hanging seats are fixedly arranged on two sides of the top of the supporting plate, and each hanging seat is provided with a fixing hole for a hanging rope to pass through.
6. The dual-winding oil-filled transformer capable of reducing no-load loss according to claim 5,
and a coil oil passage is formed between the outer surface of the second epoxy resin semi-viscous glass fiber tape and the inner surface of the high-voltage winding.
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| CN114141477B (en) | 2022-09-09 |
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Denomination of invention: A dual winding oil immersed transformer that can reduce no-load losses Effective date of registration: 20230925 Granted publication date: 20220909 Pledgee: Bank of Communications Co.,Ltd. Xuzhou Branch Pledgor: JIANGSU SHUMING ELECTRIC EQUIPMENT CO.,LTD. Registration number: Y2023320000486 |
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