CN113690030A

CN113690030A - Transformer core structure and power transformer

Info

Publication number: CN113690030A
Application number: CN202111011142.4A
Authority: CN
Inventors: 王佳美; 李斌; 钟鸣
Original assignee: Wuxi Power Transformer Co ltd
Current assignee: Wuxi Power Transformer Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-23
Anticipated expiration: 2041-08-31
Also published as: CN113690030B

Abstract

The invention relates to the field of power transformers, in particular to a transformer iron core structure and a power transformer, which comprise a shell, a bottom plate cavity, a slotted support frame, a voltage transformation component and the like; the shell is internally and fixedly provided with a bottom plate cavity, the bottom plate cavity is fixedly provided with a slotted support frame, and the pressure changing component is arranged on the slotted support frame. Through the silicon steel terminal that sets up, the silicon steel terminal utilizes silicon steel sheet orientation, adopts annealing process, can reduce the additional loss, increases current transmission efficiency, and silicon steel iron core piece adopts high magnetic conduction silicon steel sheet, fully reduces the loss, and silicon steel iron core piece adopts the ladder pile-up simultaneously, and reducible iron loss is about 8%, reaches the purpose of effectively reducing the loss.

Description

Transformer core structure and power transformer

Technical Field

The invention relates to the field of power transformers, in particular to a transformer iron core structure and a power transformer.

Background

With the rapid development of the whole national economy, the demand of a transformer is continuously increased, the power transformer is one of the most important devices in a power system and is the basis for ensuring the reliability of power supply, the transformer is composed of two or more coil windings wound on the same iron core, the windings are connected through an alternating magnetic field and work according to the electromagnetic induction principle, the installation position of the transformer is convenient to operate, overhaul and transport, and a safe and reliable place is selected.

The rated capacity of the transformer is selected according to the requirement of the power load, the traditional transformer can not control the capacity of the transformer according to the power load, the energy consumed by the transformer is larger and larger due to the increase of the demand of the transformer, if the capacity of the transformer is selected to be too large, additional loss is caused besides the direct current loss of a basic winding, the load loss is larger, the transformer is operated in no-load or light-load operation for a long time, the proportion of no-load loss is increased, the power factor is reduced, the network loss is increased, the operation is not economical and unreasonable, the selection of the capacity of the transformer is too small, the transformer is overloaded for a long time, and equipment is easy to damage.

Disclosure of Invention

The invention aims to provide a transformer core structure and a power transformer, which can effectively reduce loss, control the capacity of the transformer according to the electric load, effectively cool the inside of equipment and reduce the loss of stray and auxiliary equipment, so as to overcome the defects that the traditional transformer can not control the capacity of the transformer according to the electric load and has large load loss.

The technical scheme is as follows: the utility model provides a transformer core structure and power transformer, including the shell, fixed mounting has the bottom plate cavity in the shell, the bottom plate cavity is used for protecting internal plant, fixed mounting has the fluting support frame on the bottom plate cavity, on the fluting support frame was located to the transformer part, the transformer part is used for making the voltage power that electric current can change output when this equipment, be provided with adjusting part on the transformer part, adjusting part is used for adjusting the capacity size of the voltage power control transformer of output according to the power consumption load.

Furthermore, the voltage transformation component comprises a silicon steel iron chip, a main coil, a sealing partition plate, a first secondary coil, a second secondary coil, a third secondary coil, a wiring board and a silicon steel binding post, three stacks of silicon steel iron chips are distributed on the slotted support frame, the main coil is wound on the silicon steel iron core sheets, the silicon steel iron chips generate alternating magnetic flux under the action of alternating current in the main coil, two sealing partition plates are fixedly connected on the slotted support frame, the first secondary coil is wound on one stack of the silicon steel iron core sheets, the second secondary coil is wound on the middle stack of the silicon steel iron core sheets, the third secondary coil is wound on the other stack of the silicon steel iron core sheets, the sealing partition plate is used for separating a leakage magnetic field generated by ampere turns of the main coil and the third secondary coil, two wiring boards are fixedly connected on the slotted support frame, the first secondary coil, the second secondary coil and the secondary coil generate alternating induced electromotive force to form alternating current and output the alternating current, the secondary coil is characterized in that two ends of the primary coil, two ends of the secondary coil I, two ends of the secondary coil II and two ends of the secondary coil III are connected with a wiring board, the wiring board is used for providing current for the primary coil, two silicon steel wiring terminals are welded on one side of the wiring board, and the silicon steel wiring terminals are used for electrifying the wiring board.

Further, the silicon steel iron chip adopts high magnetic conduction silicon steel sheet, and the loss is low, the silicon steel iron chip adopts the mode of ladder pile-up to place for reduce the iron loss about 8% of silicon steel iron chip, the silicon steel iron chip is with laser irradiation, mechanical indentation and plasma processing, can let the silicon steel iron chip loss is lower.

Furthermore, the main coil, the secondary coil I, the secondary coil II and the secondary coil III are all low-loss and low-resistance wires, are formed by upward drawing of an oxygen-free copper wire and are manufactured by a copper continuous extruding machine, so that the main coil, the secondary coil I, the secondary coil II and the secondary coil III can save energy and reduce the volume to reduce the stray loss of the main coil, the secondary coil I, the secondary coil II and the secondary coil III.

Furthermore, the adjusting component comprises an opening support frame, a lead screw, four-corner turnbuckles, a nut sliding sleeve, an insulating connecting plate and a sliding iron core block, the top of the two wiring boards is jointly provided with the opening support frame, the opening support frame is rotatably connected with the lead screw, one end of the lead screw is welded with the four-corner turnbuckle convenient for a worker to manually rotate, the four-corner turnbuckle is rotatably connected with the shell, the lead screw is connected with the nut sliding sleeve in a threaded connection mode, the nut sliding sleeve follows the lead screw to do linear motion under the rotary motion of the lead screw, the nut sliding sleeve is slidably connected with the opening support frame, the bottom of the nut sliding sleeve is fixedly connected with the insulating connecting plate, the insulating connecting plate is used for separating a magnetic leakage field generated by the silicon steel iron chips, the bottom surface of the insulating connecting plate is fixedly connected with the sliding iron core block, and the sliding iron core block is in contact with one pile of the silicon steel iron chips, the sliding core block is used for enabling the magnetic field in the silicon steel core plate to be in a closed state.

The oil injection part is used for injecting oil into the packer plate and comprises a P-shaped slotted frame, an electromagnetic valve, an oil guide pipe, a sector gear, an L-shaped rack, a first return spring, a sliding gear block, a second return spring and a magnetic valve switch, the two P-shaped slotted frames are fixedly connected to the slotted frame, the electromagnetic valve is arranged above the P-shaped slotted frame, the oil guide pipe for guiding oil is connected to the electromagnetic valve, the oil guide pipe is communicated with the two packer plates for storing the oil, the sector gear is fixedly connected to the lead screw, the L-shaped rack is vertically connected to the P-shaped slotted frame in a sliding manner, the first return spring is connected between the L-shaped rack and the P-shaped slotted frame, and the sliding gear block is connected above the L-shaped rack in a sliding manner, a pair of second reset springs is connected between the sliding tooth block and the L-shaped rack, a magnetic valve switch is arranged on the P-shaped slotted frame and used for controlling the connection of the oil guide pipe and the oil conveying pipe.

The variable-speed cooling device comprises a fixed supporting block, a servo motor, a fan cover, a glass fiber reinforced plastic fan, a transmission gear, a slotted shaft sleeve, a sliding rod, a first homing spring, a sliding gear, a second homing spring, an elastic steel belt, an L-shaped slotted frame, a rod arc sliding sleeve and a wedge-shaped push rod, wherein the fixed supporting block is fixedly arranged on one side of the cavity of the bottom plate, the servo motor for driving is fixedly arranged on the fixed supporting block, the fan cover is symmetrically and fixedly arranged on the slotted supporting frame and fixedly connected with the wiring board, the glass fiber reinforced plastic fan is rotatably connected on the fan cover and used for conveying outside cold air into the device for cooling and heat dissipation, the fan cover is used for protecting a glass fiber reinforced plastic fan, a transmission gear is fixedly connected to the glass fiber reinforced plastic fan, slotted shaft sleeves are welded at two ends of an output shaft of the servo motor, sliding rods are connected to the slotted shaft sleeves in a sliding mode, the slotted shaft sleeves are used for driving the sliding rods to rotate together, a first homing spring is connected to the sliding rods in a circumferentially distributed mode, one end of the first homing spring is connected with the slotted shaft sleeves in a connected mode, sliding gears are connected to the slotted shaft sleeves in a circumferentially distributed mode in a sliding mode, the sliding rods are in mutual contact with the sliding gears, two adjacent sliding gears are in mutual contact, a second homing spring is fixedly connected to the sliding gears, one end of the second homing spring is connected with the slotted shaft sleeves in a connected mode, an elastic steel belt used for transmitting power and having elasticity is connected between the sliding gears and the transmission gear at the same side, the novel electric fan is characterized in that an L-shaped slotted frame is fixedly connected to one side of the fan cover, an arc sliding sleeve with a rod is slidably connected to the L-shaped slotted frame, the slotted shaft sleeve penetrates through the arc sliding sleeve with the rod, the arc sliding sleeve with the rod is in contact with the sliding rod, wedge-shaped push rods are symmetrically connected to the nut sliding sleeve, the wedge-shaped push rods are in contact with the arc sliding sleeve with the rod, and the wedge-shaped push rods are used for pushing the arc sliding sleeve with the rod to move relatively.

Furthermore, the glass fiber reinforced plastic fan adopts a glass fiber reinforced plastic structure, the glass fiber reinforced plastic has high rotation efficiency and low noise when in use, and the glass fiber reinforced plastic fan is used for cooling the inside of the equipment with high efficiency and reducing the loss of auxiliary equipment.

Further, the resonance noise reduction device comprises a resonance noise reduction part, the fixed supporting block is provided with a resonance noise reduction part for reducing noise, the resonance noise reduction part comprises a rectangular slotted frame, a relay switch, a rectangular rod, a wedge-shaped push rod, a restoring spring and a resonance noise reduction instrument, the rectangular slotted frame is fixedly installed on the fixed supporting block, the relay switch is arranged on the fixed supporting block, the rectangular rod is fixedly connected below the arc-shaped sliding sleeve with the rod, the wedge-shaped push rod is connected on the rectangular slotted frame in a sliding mode and is in contact with the rectangular rod, the wedge-shaped push rod is in contact with the relay switch and is used for pressing the relay switch, the restoring spring is connected between the wedge-shaped push rod and the rectangular slotted frame, the bottom surface of the slotted supporting frame is uniformly provided with three resonance noise reduction instruments, and the resonance noise reduction instruments are used for enabling the silicon steel chip to not generate strong resonance, the relay switch is used for controlling the resonance noise reduction instrument to be electrified, and the resonance noise reduction instrument is fixedly connected with the bottom plate cavity.

The secondary coil I, the secondary coil II and the secondary coil III are all in contact with the moisture-proof sleeve, and the moisture-proof sleeve is used for protecting the primary coil, the secondary coil I, the secondary coil II and the secondary coil III.

The beneficial effects are that:

through the silicon steel terminal that sets up, the silicon steel terminal utilizes silicon steel sheet orientation, adopts annealing process, can reduce the additional loss, increases current transmission efficiency, and silicon steel iron core piece adopts high magnetic conduction silicon steel sheet, fully reduces the loss, and silicon steel iron core piece adopts the ladder pile-up simultaneously, and reducible iron loss is about 8%, reaches the purpose of effectively reducing the loss.

Because the number of turns of the secondary coil I, the secondary coil II and the secondary coil III is less than that of the primary coil, alternating induced electromotive force generated when the alternating magnetic flux of the silicon-steel iron chip passes through the secondary coil I, the secondary coil II or the secondary coil III forms alternating current which is reduced, so that the output voltage can be gradually reduced, and the purpose of reducing voltage power is realized.

The position of the sliding iron core block is adjusted by rotating the four-corner rotary sleeve, so that the output voltage power is reduced or increased, and therefore, a worker can adjust the position of the sliding iron core block according to needs, the output voltage power is adjusted, and the purpose of controlling the capacity of the transformer according to the electric load is achieved.

Carry external cold air to the silicon steel iron core piece on through glass fiber reinforced plastic fan, dispel the heat to the silicon steel iron core piece, reach the inside even refrigerated purpose of messenger's equipment, reach simultaneously and adopt the most economic and energy-conserving cooling method to reduce stray loss's effect.

Through to the fluid of input in the packer baffle, can utilize fluid liquid dielectric characteristic and "volume effect", restore the packer baffle, avoid the packer baffle long-time use because of receiving fracture or micro-crack to appear in great mechanical load, and can utilize the "distance effect" of oil to make and form the clearance between two piles of silicon steel iron core pieces.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of a first partial body structure of the variable speed heat sink member of the present invention.

Fig. 3 is a schematic perspective view of the bottom plate chamber and the slotted support frame of the present invention.

Fig. 4 is a schematic view of a first partially assembled body of a transformer component of the present invention.

Fig. 5 is a schematic view of a second partial body structure of a transformer component of the present invention.

Fig. 6 is a schematic perspective view of an adjustment member of the present invention.

FIG. 7 is a schematic view of a first partially separated body configuration of an oil injection component of the present invention.

FIG. 8 is a schematic view of a second partially separated body configuration of the oil injection component of the present invention.

FIG. 9 is a perspective view of a third portion of the oil injection fitting of the present invention.

Fig. 10 is a schematic view of a second partial body structure of the variable speed heat sink of the present invention.

Fig. 11 is a perspective view of a third portion of a variable speed heat sink of the present invention.

Fig. 12 is a perspective view of a fourth partial structure of a variable speed heat sink of the present invention.

Fig. 13 is a schematic view of a fifth partial body structure of the variable speed heat sink of the present invention.

Fig. 14 is a partially disassembled perspective view of the gearshift heat sink member of the present invention.

Fig. 15 is a schematic view of a sixth partial body of a variable speed heat sink according to the present invention.

Fig. 16 is an enlarged schematic view of the structure of the present invention a.

Fig. 17 is a partial perspective view of the present invention.

Fig. 18 is a perspective view of a third partial structure of the pressure changing member of the present invention.

Reference numerals: 1_ housing, 21_ bottom plate chamber, 22_ slotted support, 3_ pressure changing part, 31_ silicon iron core, 32_ main coil, 33_ seal plate, 34_ sub coil one, 35_ sub coil two, 36_ sub coil three, 37_ terminal plate, 38_ silicon steel terminal, 4_ adjustment part, 41_ perforated support, 42_ lead screw, 43_ quadrangle sleeve, 44_ nut magnetic valve slide, 45_ insulation tab, 46_ sliding iron core block, 5_ oil injection part, 51_ P type slotted frame, 52_ electromagnetic valve, 53_ oil guide pipe, 54_ sector gear, 55_ L type rack, 56_ first return spring, 57_ sliding tooth block, 58_ second return spring, 59_ solenoid valve, 6_ transmission heat dissipation part, 61_ fixed support block, 62_ servo motor, 63_ fan cover, 64_ glass fiber reinforced plastic fan, 65_ transmission gear, 66_ shaft sleeve, 67_ slide bar, 68_ first homing spring, 69_ slide gear, 610_ second homing spring, 611_ elastic steel belt, 612_ L-shaped slotted frame, 613_ arc-shaped slide sleeve with bar, 614_ wedge push bar, 7_ resonance noise reduction component, 71_ rectangular slotted frame, 72_ relay switch, 73_ rectangular bar, 74_ wedge push bar, 75_ homing spring, 76_ resonance noise reducer and 8_ damp-proof sleeve.

Detailed Description

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

A transformer core structure and a power transformer are disclosed, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 17 and fig. 18, the transformer core structure comprises a shell 1, a bottom plate cavity 21, a slotted support frame 22, a voltage transformation component 3 and an adjusting component 4, wherein the bottom plate cavity 21 is fixedly installed in the shell 1, the slotted support frame 22 is fixedly installed on the bottom plate cavity 21, the voltage transformation component 3 is arranged on the slotted support frame 22, and the adjusting component 4 is arranged on the voltage transformation component 3.

The transformer component 3 comprises a silicon steel iron chip 31, a main coil 32, a sealing partition plate 33, a first secondary coil 34, a second secondary coil 35, a third secondary coil 36, a wiring board 37 and a silicon steel wiring terminal 38, three stacks of the silicon steel iron chips 31 are distributed on the slotting support frame 22, the main coil 32 is wound on the silicon steel iron chip 31, two sealing partition plates 33 are fixedly connected on the slotting support frame 22, the first secondary coil 34 is wound on one stack of the silicon steel iron chips 31, the second secondary coil 35 is wound on the middle stack of the silicon steel iron chips 31, the third secondary coil 36 is wound on the other stack of the silicon steel iron chips 31, two wiring boards 37 are fixedly connected on the slotting support frame 22, the main coil 32, the first secondary coil 34, the second secondary coil 35 and the third secondary coil 36 are connected with the wiring board 37 at two ends, and two silicon steel wiring terminals 38 are welded on one side of the wiring board 37.

Adjusting part 4 is including trompil support frame 41, lead screw 42, four corners cover 43, nut sliding sleeve 44, insulating fishplate bar 45 and slip iron core piece 46, two wiring board 37 top is provided with trompil support frame 41 jointly, the last rotation type of trompil support frame 41 is connected with lead screw 42, the welding of lead screw 42 one end has four corners cover 43 soon, four corners cover 43 is connected with the 1 rotary type of shell, the mode through threaded connection is connected with nut sliding sleeve 44 on the lead screw 42, nut sliding

sleeve

44 and 41 sliding connection of trompil support frame, nut sliding sleeve 44 bottom rigid coupling has insulating

fishplate bar

45, 45 bottom rigid couplings of insulating fishplate bar have slip iron core piece 46, slip iron core piece 46 and a heap of silicon steel iron chip 31 in them contact with each other.

An external circuit is connected with the silicon steel binding post 38, so that the circuit in the silicon steel binding post 38 is connected with the wiring board 37, and the silicon steel binding post 38 can reduce additional loss and increase current transmission efficiency by utilizing the orientation of silicon steel sheets. The sliding iron core block 46 is connected with one pile of silicon steel iron chips 31, so that the magnetic field in the pile of silicon steel iron chips 31 is in a closed state, the silicon steel iron chips 31 in the device adopt high-permeability silicon steel sheets, the loss is fully reduced, and meanwhile, the silicon steel iron chips 31 adopt step stacking, so that the iron loss can be reduced by about 8%. When the device normally operates, the wiring board 37 supplies current to the main coil 32, alternating current in the main coil 32 generates alternating magnetic flux in the ferrosilicon chip 31, and when the alternating magnetic flux of the ferrosilicon chip 31 passes through the third secondary coil 36, the third secondary coil 36 generates alternating induced electromotive force to form alternating current and output the alternating current. Because the number of turns of the secondary coil three 36 is less than that of the primary coil 32, the voltage in the secondary coil three 36 is gradually reduced, and the purpose of reducing voltage and power is achieved, the sealing and separating plate 33 can separate the leakage magnetic field generated by the ampere turns of the primary coil 32 and the secondary coil three 36, and the leakage magnetic flux is prevented from causing eddy current loss in the secondary coil three 36 and the primary coil 32.

When the electrical load that needs to use is great, the staff revolves cover 43 through using clamping tool clockwise rotation four corners, four corners revolves cover 43 and drives lead screw 42 and rotates, lead screw 42 drives nut sliding sleeve 44 and the device on it and revolves cover 43 direction motion towards keeping away from the four corners, make sliding iron core piece 46 be located a heap of silicon steel iron chip 31 at middle part, make the magnetic field in a heap of silicon steel iron chip 31 at middle part be in the closure state, make secondary coil two 35 export alternating current, because the coil number of turns of secondary coil two 35 is many than the coil number of turns of secondary coil three 36, consequently secondary coil two 35 is bigger than the voltage power of secondary coil three 36 output, make the voltage power grow of output. When the sliding core block 46 is positioned on the other stack of silicon-iron core pieces 31, the voltage power output from the first secondary coil 34 is the largest. When the electric load that needs to use is less, the staff rotates four corners spiral cover 43 through using clamping tool anticlockwise for nut sliding sleeve 44 and the last device move towards being close to four corners spiral cover 43 direction, adjust the position of sliding iron core piece 46, make the voltage power of output reduce, therefore the staff can adjust the position of sliding iron core piece 46 as required, reach the purpose of adjusting the voltage power of output.

Example 2

On the basis of embodiment 1, as shown in fig. 7, 8 and 9, the oil injection device further includes an oil injection part 5, the oil injection part 5 is disposed on the perforated support frame 41, the oil injection part 5 includes a P-type slotted frame 51, an electromagnetic valve 52, an oil guide pipe 53, a sector gear 54, an L-type rack 55, a first return spring 56, a sliding tooth block 57, a second return spring 58 and a magnetic valve switch 59, the perforated support frame 41 is fixedly connected with the two P-type slotted frames 51, the electromagnetic valve 52 is disposed above the P-type slotted frame 51, the oil guide pipe 53 is connected to the electromagnetic valve 52, the oil guide pipe 53 is communicated with the two partition plates 33, the sector gear 54 is fixedly connected to the lead screw 42, the P-type slotted frame 51 is vertically and slidably connected with the L-type rack 55, a first return spring 56 is connected between the L-type rack 55 and the P-type slotted frame 51, a sliding gear block 57 is connected above the L-shaped rack 55 in a sliding manner, a pair of second return springs 58 is connected between the sliding gear block 57 and the L-shaped rack 55, and a magnetic valve switch 59 is arranged on the P-shaped slotted rack 51.

The electromagnetic valve 52 is connected with the oil pipeline, the clockwise rotation of the screw rod 42 can drive the sector gear 54 to rotate clockwise, the sector gear 54 pushes one sliding tooth block 57 to move downwards, then the sector gear 54 is separated from the sliding tooth block 57, the compressed second return spring 58 is reset to drive the sliding tooth block 57 to move upwards and reset, then the sector gear 54 is engaged with an L-shaped rack 55, the sector gear 54 drives the L-shaped rack 55 to move upward, so that the L-shaped rack 55 presses a magnetic valve switch 59, the magnetic valve switch 59 opens a magnetic valve 52, the oil pipeline inputs oil into the sealing partition plate 33 through the magnetic valve 52 and the oil guide pipe 53, and by utilizing the dielectric property and the volume effect of the oil liquid, the sealing partition plate 33 is repaired, so that the sealing partition plate 33 is prevented from cracking or micro-cracking caused by large mechanical load after being used for a long time, and a gap is formed between the two piles of silicon-iron-steel chips 31 by using the distance effect of oil.

In the working process of the equipment, oil is gradually consumed, when the lead screw 42 rotates anticlockwise, the lead screw 42 drives the sector gear 54 to rotate anticlockwise, the operation is repeated, the L-shaped rack 55 presses another magnetic valve switch 59, the magnetic valve switch 59 opens another electromagnetic valve 52, and the oil delivery pipe can also input oil into the sealing plate 33 through the electromagnetic valve 52 and the oil guide pipe 53.

Example 3

On the basis of embodiment 2, as shown in fig. 10, 11, 12, 13, 14, 15, 16 and 17, the variable speed heat dissipation device 6 is further included, the variable speed heat dissipation device 6 is disposed on one side of the bottom plate cavity 21, the variable speed heat dissipation device 6 includes a fixed support block 61, a servo motor 62, a fan cover 63, a fiberglass reinforced plastic fan 64, a transmission gear 65, a slotted shaft sleeve 66, a sliding rod 67, a first return spring 68, a sliding gear 69, a second return spring 610, an elastic steel band 611, an L-shaped slotted bracket 612, a rod arc-shaped sliding sleeve 613 and a wedge-shaped push rod 614, the fixed support block 61 is fixedly mounted on one side of the bottom plate cavity 21, the servo motor 62 is fixedly mounted on the fixed support block 61, the slotted support frame 22 is symmetrically and fixedly mounted with the fan cover 63, the fan cover 63 is fixedly connected with the wiring board 37, the fan cover 63 is rotatably connected with the fiberglass reinforced plastic fan 64, a transmission gear 65 is fixedly connected to the glass fiber reinforced plastic fan 64, slotted shaft sleeves 66 are welded at two ends of an output shaft of the servo motor 62, sliding rods 67 are connected to the slotted shaft sleeves 66 in a sliding manner, first homing springs 68 are connected to the sliding rods 67 in a circumferentially distributed manner, one end of each first homing spring 68 is connected to the slotted shaft sleeve 66, sliding gears 69 are connected to the slotted shaft sleeves 66 in a circumferentially distributed manner, the sliding rods 67 are in mutual contact with the sliding gears 69, two adjacent sliding gears 69 are in mutual contact, a second homing spring 610 is fixedly connected to the sliding gear 69, one end of each second homing spring 610 is connected to the slotted shaft sleeve 66, an elastic steel belt 611 is connected between the sliding gear 69 and the transmission gear 65 in a transmission manner at the same side, and an L-shaped slotted frame 612 is fixedly connected to one side of the fan cover 63, the L-shaped slotted frame 612 is slidably connected with a rod arc sliding sleeve 613, the slotted shaft sleeve 66 penetrates through the rod arc sliding sleeve 613, the rod arc sliding sleeve 613 is in contact with the sliding rod 67, wedge-shaped push rods 614 are symmetrically connected to the nut sliding sleeve 44, and the wedge-shaped push rods 614 are in contact with the rod arc sliding sleeve 613.

When the equipment normally operates, high temperature can be generated in the equipment, a worker starts the servo motor 62 to operate, the output shaft of the servo motor 62 rotates to drive the slotted shaft sleeve 66 and the upper device to rotate, the sliding gear 69 drives the transmission gear 65 and the glass fiber reinforced plastic fan 64 to rotate through the elastic steel belt 611, the glass fiber reinforced plastic fan 64 conveys outside cold air to the silicon steel iron chip 31, the silicon steel iron chip 31 is cooled, and the purpose of uniformly cooling the inside of the equipment is achieved.

When the nut sliding sleeve 44 and the device thereon move in the direction away from the four-corner rotating sleeve 43, the wedge-shaped pushing rod 614 can push the arc-shaped sliding sleeve 613 with the rod to move relatively, the arc-shaped sliding sleeve 613 with the rod pushes the sliding rod 67 to move relatively, the sliding rod 67 pushes the sliding gear 69 to move relatively, and the sliding gear 69 enlarges the elastic steel belt 611, so that the elastic steel belt 611 drives the transmission gear 65 and the glass fiber reinforced plastic fan 64 to rotate rapidly, thereby increasing the efficiency of heat dissipation inside the device, enabling the output voltage power to be in direct proportion to the cooling efficiency, and avoiding serious heat generation inside the device caused by the increase of the output voltage power.

When the nut sliding sleeve 44 and the upper device thereof move towards the direction close to the quadrangle rotating sleeve 43, the wedge-shaped pushing rod 614 is separated from the arc-shaped sliding sleeve 613 with the rod, the compressed first return spring 68 is reset to drive the sliding rod 67 to move and reset oppositely, the sliding rod 67 is separated from the sliding gear 69, and the stretched second return spring 610 is reset to drive the sliding gear 69 to move and reset oppositely.

Example 4

On the basis of embodiment 3, as shown in fig. 16 and 17, the resonance noise reduction device 7 is further included, the resonance noise reduction device 7 is disposed on the fixed supporting block 61, the resonance noise reduction device 7 includes a rectangular slotted frame 71, a relay switch 72, a rectangular rod 73, a wedge-shaped push rod 74, a return spring 75 and a resonance noise reduction instrument 76, the rectangular slotted frame 71 is fixedly mounted on the fixed supporting block 61, the relay switch 72 is disposed on the fixed supporting block 61, the rectangular rod 73 is fixedly connected below the arc-shaped sliding sleeve 613 with the rod, the wedge-shaped push rod 74 is slidably connected on the rectangular slotted frame 71, the wedge-shaped push rod 74 and the rectangular rod 73 are in contact with each other, the wedge-shaped push rod 74 and the relay switch 72 are in contact with each other, the return spring 75 is connected between the wedge-shaped push rod 74 and the rectangular slotted frame 71, the three resonance noise reduction instruments 76 are disposed on the bottom surface of the slotted supporting frame 22 in an evenly distributed manner, the resonance noise reduction instrument 76 is fixedly connected with the bottom plate cavity 21.

When the arc-shaped sliding sleeve 613 with the rod moves relatively, the arc-shaped sliding sleeve 613 with the rod drives the rectangular rod 73 to move away from the servo motor 62, the rectangular rod 73 pushes the wedge-shaped push rod 74 to move upwards, the relay switch 72 is pressed by the wedge-shaped push rod 74, the relay switch 72 enables the resonance noise reducer 76 to be powered on, and the resonance noise reducer 76 enables the silicon-iron chip 31 not to generate strong resonance, so that the noise is reduced, and the effect of obviously reducing the noise is achieved. When the arc-shaped sliding sleeve 613 with the rod moves towards each other, the arc-shaped sliding sleeve 613 with the rod drives the rectangular rod 73 to move towards the direction close to the servo motor 62, the rectangular rod 73 is separated from the wedge-shaped push rod 74, and the restoring spring 75 restores to drive the wedge-shaped push rod 74 to move downwards to restore.

Example 5

On the basis of embodiment 4, as shown in fig. 18, the moisture-proof cover 8 is further included, three pairs of moisture-proof covers 8 are provided on the other side of the wiring board 37, and the primary coil 32, the primary coil one 34, the secondary coil two 35, and the secondary coil three 36 are all in contact with the moisture-proof cover 8.

In rainy days, the moisture-proof sleeve 8 can protect the main coil 32, the first secondary coil 34, the second secondary coil 35 and the third secondary coil 36, so that rainwater is prevented from entering the main coil 32, the first secondary coil 34, the second secondary coil 35 and the third secondary coil 36, and the electric leakage phenomenon is avoided.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a transformer core structure and power transformer, includes shell (1), its characterized in that, fixed mounting has bottom plate cavity (21) in shell (1), bottom plate cavity (21) are used for protecting internal plant, fixed mounting has fluting support frame (22) on bottom plate cavity (21), on fluting support frame (22) was located in transformer part (3), transformer part (3) are used for making the electric current can change the voltage power of output when this equipment, be provided with adjusting part (4) on transformer part (3), adjusting part (4) are used for adjusting the capacity size of the voltage power control transformer of output according to the power consumption load.

2. The transformer core structure and the power transformer as claimed in claim 1, wherein the transformer component (3) comprises silicon steel core pieces (31), primary coils (32), sealing partition plates (33), primary coils (34), secondary coils (35), secondary coils (36), a wiring board (37) and silicon steel binding posts (38), three stacks of silicon steel core pieces (31) are distributed on the slotted support frame (22), the primary coils (32) are wound on the silicon steel core pieces (31), the silicon steel core pieces (31) are under the action of alternating current in the primary coils (32) to generate alternating magnetic flux, two sealing partition plates (33) are fixedly connected on the slotted support frame (22), the primary coils (34) are wound on one stack of the silicon steel core pieces (31), and the secondary coils (35) are wound on the middle stack of the silicon steel core pieces (31), the third secondary coil (36) is wound on another pile of silicon-iron chips (31), the sealing partition plate (33) is used for separating a leakage magnetic field generated by the ampere-turn of the third primary coil (32) and the third secondary coil (36), two wiring boards (37) are fixedly connected to the slotted support frame (22), the first secondary coil (34), the second secondary coil (35) and the third secondary coil (36) are used for generating alternating induced electromotive force to form alternating current and outputting the alternating current, the two ends of the primary coil (32), the primary secondary coil (34), the secondary coil (35) and the secondary coil (36) are connected with a wiring board (37), the wiring board (37) is used for providing current for the main coil (32), two silicon steel wiring terminals (38) are welded on one side of the wiring board (37), the silicon steel terminal (38) is used for electrifying the wiring board (37).

3. The transformer core structure and power transformer as claimed in claim 2, wherein the silicon-steel core plates (31) are made of high-permeability silicon steel sheets, and have low loss, and the silicon-steel core plates (31) are placed in a step-stacked manner to reduce the iron loss of the silicon-steel core plates (31) by about 8%, and the silicon-steel core plates (31) are irradiated with laser, mechanically indented and processed by plasma, so that the loss of the silicon-steel core plates (31) is lower.

4. The transformer core structure and power transformer of claim 2, wherein the primary winding (32), the primary winding (34), the secondary winding (35) and the secondary winding (36) are all made of low-loss low-resistance wires, are drawn by an upward drawing method by oxygen-free copper wires, and are manufactured by a copper continuous extrusion machine, so that the primary winding (32), the secondary winding (34), the secondary winding (35) and the secondary winding (36) can save energy and reduce volume to reduce stray loss.

5. The transformer core structure and the power transformer as claimed in claim 2, wherein the adjusting component (4) comprises an opening support frame (41), a lead screw (42), a four-corner turnbuckle (43), a nut sliding sleeve (44), an insulating connecting plate (45) and a sliding core block (46), the opening support frame (41) is jointly arranged on the top of the two wiring boards (37), the lead screw (42) is rotatably connected to the opening support frame (41), the four-corner turnbuckle (43) convenient for a worker to manually rotate is welded on one end of the lead screw (42), the four-corner turnbuckle (43) is rotatably connected to the housing (1), the nut sliding sleeve (44) is connected to the lead screw (42) in a threaded connection manner, the nut sliding sleeve (44) follows to move linearly under the rotation of the lead screw (42), and the nut sliding sleeve (44) is slidably connected to the opening support frame (41), nut sliding sleeve (44) bottom rigid coupling has insulating fishplate bar (45), insulating fishplate bar (45) be used for with the leakage magnetic field that silicon steel iron core piece (31) produced is separated, insulating fishplate bar (45) bottom surface rigid coupling has sliding iron core piece (46), sliding iron core piece (46) and one pile of silicon steel iron core piece (31) contact each other among them, sliding iron core piece (46) are used for making magnetic field in silicon steel iron core piece (31) is in the closed condition.

6. The transformer core structure and the power transformer according to claim 3, further comprising an oil injection part (5), wherein the perforated support frame (41) is provided with the oil injection part (5), the oil injection part (5) is used for injecting oil into the partition plate (33), the oil injection part (5) comprises a P-shaped slotted frame (51), an electromagnetic valve (52), an oil guide pipe (53), a sector gear (54), an L-shaped rack frame (55), a first return spring (56), a sliding tooth block (57), a second return spring (58) and a magnetic valve switch (59), the perforated support frame (41) is fixedly connected with the two P-shaped slotted frames (51), the electromagnetic valve (52) is arranged above the P-shaped slotted frame (51), and the oil guide pipe (53) for guiding oil is connected to the electromagnetic valve (52), lead oil pipe (53) and dual-purpose baffle (33) intercommunication that seals with storage fluid, sector gear (54) rigid coupling is on lead screw (42), vertical sliding connection has L type rack (55) on P type fluting frame (51), be connected with first reset spring (56) between L type rack (55) and P type fluting frame (51), L type rack (55) top sliding connection has slip tooth piece (57), be connected with a pair of second reset spring (58) between slip tooth piece (57) and L type rack (55), be provided with solenoid valve switch (59) on P type fluting frame (51), solenoid valve switch (59) are used for control lead oil pipe (53) and defeated oil pipe switch-on.

7. The transformer core structure and the power transformer as claimed in claim 4, further comprising a variable speed heat dissipation member (6), wherein the variable speed heat dissipation member (6) is disposed at one side of the bottom plate cavity (21), the variable speed heat dissipation member (6) is used for adjusting cooling efficiency of output voltage power, the variable speed heat dissipation member (6) comprises a fixed support block (61), a servo motor (62), a fan cover (63), a glass fiber reinforced plastic fan (64), a transmission gear (65), a slotted shaft sleeve (66), a sliding rod (67), a first homing spring (68), a sliding gear (69), a second homing spring (610), an elastic steel band (611), an L-shaped slotted frame (612), a rod-provided arc-shaped sliding sleeve (613) and a wedge-shaped push rod (614), the fixed support block (61) is fixedly mounted at one side of the bottom plate cavity (21), the fixed supporting block (61) is fixedly provided with a servo motor (62) for driving, the slotted supporting frame (22) is symmetrically and fixedly provided with a fan cover (63), the fan cover (63) is fixedly connected with the wiring board (37), the fan cover (63) is rotationally connected with a glass fiber reinforced plastic fan (64), the glass fiber reinforced plastic fan (64) is used for conveying external cold air to the inside of the equipment for cooling and heat dissipation, the fan cover (63) is used for protecting the glass fiber reinforced plastic fan (64), a transmission gear (65) is fixedly connected onto the glass fiber reinforced plastic fan (64), slotted shaft sleeves (66) are welded at two ends of an output shaft of the servo motor (62), the slotted shaft sleeves (66) are slidably connected with sliding rods (67), and the slotted shaft sleeves (66) are used for driving the sliding rods (67) to rotate together, the novel electric fan is characterized in that a first homing spring (68) is connected to the sliding rod (67) in a circumferentially distributed manner, one end of the first homing spring (68) is connected with the grooved shaft sleeve (66), a sliding gear (69) is connected to the grooved shaft sleeve (66) in a circumferentially distributed manner in a sliding manner, the sliding rod (67) is in mutual contact with the sliding gear (69), two adjacent sliding gears (69) are in mutual contact, a second homing spring (610) is fixedly connected to the sliding gear (69), one end of the second homing spring (610) is connected with the grooved shaft sleeve (66), an elastic steel belt (611) used for transmitting power and having elasticity is in transmission connection between the sliding gear (69) and the transmission gear (65) at the same side, an L-shaped slotted frame (612) is fixedly connected to one side of the fan cover (63), and a rod arc-shaped sliding sleeve (613) is connected to the L-shaped slotted frame (612) in a sliding manner, the slotted shaft sleeve (66) penetrates through the arc sliding sleeve (613) with the rod, the arc sliding sleeve (613) with the rod is in contact with the sliding rod (67), the nut sliding sleeve (44) is symmetrically connected with wedge-shaped push rods (614), the wedge-shaped push rods (614) are in contact with the arc sliding sleeve (613) with the rod, and the wedge-shaped push rods (614) are used for pushing the arc sliding sleeve (613) with the rod to move relatively.

8. The transformer core structure and the power transformer as claimed in claim 5, wherein the fiberglass reinforced plastic fan (64) is made of fiberglass reinforced plastic, the fiberglass reinforced plastic has high rotation efficiency and low noise when in use, and the fiberglass reinforced plastic fan (64) is used for cooling the inside of the equipment with high efficiency and reducing the loss of auxiliary equipment.

9. The transformer core structure and the power transformer of claim 5, further comprising a resonance noise reduction component (7), wherein the fixed support block (61) is provided with the resonance noise reduction component (7) for reducing noise, the resonance noise reduction component (7) comprises a rectangular slotted frame (71), a relay switch (72), a rectangular rod (73), a wedge-shaped push rod (74), a restoring spring (75) and a resonance noise reducer (76), the rectangular slotted frame (71) is fixedly mounted on the fixed support block (61), the relay switch (72) is arranged on the fixed support block (61), a rectangular rod (73) is fixedly connected below the arc-shaped sliding sleeve (613) with the rod, the wedge-shaped push rod (74) is slidably connected on the rectangular slotted frame (71), and the wedge-shaped push rod (74) and the rectangular rod (73) are in contact with each other, wedge push rod (74) and relay switch (72) contact each other, wedge push rod (74) are used for pressing relay switch (72), be connected with between wedge push rod (74) and rectangle fluting frame (71) and restore spring (75), fluting support frame (22) bottom surface equipartition formula is provided with three resonance and falls the appearance (76) of making an uproar, resonance falls the appearance (76) and is used for making silicon steel iron chip (31) can't produce strong resonance, relay switch (72) are used for controlling resonance falls the appearance (76) circular telegram of making an uproar, resonance falls appearance (76) and bottom plate cavity (21) rigid coupling of making an uproar.

10. The transformer core structure and the power transformer as claimed in claim 6, further comprising a moisture-proof sleeve (8), wherein three pairs of moisture-proof sleeves (8) are disposed on the other side of the terminal plate (37), the primary winding (32), the primary winding one (34), the secondary winding two (35) and the secondary winding three (36) are all in contact with the moisture-proof sleeve (8), and the moisture-proof sleeve (8) is used for protecting the primary winding (32), the secondary winding one (34), the secondary winding two (35) and the secondary winding three (36).