阅读说明：本技术 一种三相干式变压器 (Three-phase dry-type transformer ) 是由 不公告发明人 于 2021-08-23 设计创作，主要内容包括：本发明公开了一种三相干式变压器,包括底座、位于底座上的三个绕组和位于底座底部两侧通过螺栓连接的支撑架,每个所述绕组底部的四周均固定连接有支撑块,所述支撑块的底部与底座的顶部固定连接,每个绕组分别包括铁芯、以及依次套设于铁芯外侧的低压绕组和高压绕组,低压绕组和高压绕组之间形成冷却通道,通过设置倾斜的导风板,能够使得底部的风能够均匀的吹至冷却通过的内部,并加快风速的流动,同时利用置物盒内的驱动电机带动旋转扇叶吹出气流,经环形的固定环吹出向上的气流吹至冷却通道的内部,通过此结构能够极大的提高冷却效果,使得该变压器能够长时间处于高负载情况下进行工作。(The invention discloses a three-phase dry-type transformer, which comprises a base, three windings positioned on the base and a support frame positioned on two sides of the bottom of the base and connected by bolts, wherein the periphery of the bottom of each winding is fixedly connected with a support block, the bottom of the supporting block is fixedly connected with the top of the base, each winding comprises an iron core, and a low-voltage winding and a high-voltage winding which are sequentially sleeved outside the iron core, a cooling channel is formed between the low-voltage winding and the high-voltage winding, the inclined air deflector can ensure that the wind at the bottom can be uniformly blown to the cooled and passed inner part and accelerate the flow of the wind speed, meanwhile, the driving motor in the storage box drives the rotary fan blades to blow air flow, the upward air flow is blown out to the inside of the cooling channel through the annular fixing ring, through the structure, the cooling effect can be greatly improved, so that the transformer can work under the condition of high load for a long time.)

1. A three-phase dry-type transformer comprises a base (1), three windings (2) positioned on the base (1) and a support frame (3) positioned on two sides of the bottom of the base (1) and connected through bolts, and is characterized in that the periphery of the bottom of each winding (2) is fixedly connected with a support block (4), the bottom of each support block (4) is fixedly connected with the top of the base (1), each winding (2) comprises an iron core (21), a low-voltage winding (22) and a high-voltage winding (23) which are sequentially sleeved on the outer side of the iron core (21), a cooling channel (24) is formed between the low-voltage winding (22) and the high-voltage winding (23), an air deflector (25) is arranged inside the cooling channel (24), the three windings (2) are electrically connected through a high-voltage connecting bus, a cooling component (5) is arranged on the top of the base (1) and outside the support block (4), two sides of the top of the support frame (3) are provided with moving assemblies (6).

2. A three-phase dry transformer according to claim 1, wherein the cooling assembly (5) comprises a fixing ring (51) on top of the base (1), one side of the fixing ring (51) is provided with a connecting block (52), one side of the connecting block (52) is fixedly connected with a storage box (53), a plurality of ventilation holes (54) are arranged on the outer surface of the storage box (53), a driving motor (55) is fixedly connected with the inner surface of the storage box (53), the output end of the driving motor (55) is fixedly connected with a rotating fan blade (56), the inner surface of the storage box (53) is fixedly connected with a baffle plate (57), one side of the baffle plate (57) is provided with a plurality of through holes (58), one side of the storage box (53) is provided with a ventilation opening (59), and one side of the connecting block (52) is provided with a ventilation hole (54).

3. A three-phase dry transformer according to claim 2, wherein the stationary ring (51) is a hollow ring, the stationary ring (51) being adapted to blow an upward air flow.

4. The three-phase dry-type transformer of claim 1, wherein the moving assembly (6) comprises a position-limiting box (61) at the top of the supporting frame (3) and sliding holes (62) at both sides of the top of the supporting frame (3), a sliding plate (63) is disposed inside the position-limiting box (61), vertical rods (64) are fixedly connected to both sides of the bottom of the sliding plate (63), the outer surfaces of the vertical rods (64) are slidably connected to the inner surface of the sliding holes (62), a rotating wheel (65) is rotatably connected between the two opposite sides of the vertical rods (64), a rotating sleeve (66) penetrates through the top of the position-limiting box (61), a rotating rod (67) is rotatably connected to the inner surface of the rotating sleeve (66), the bottom end of the rotating rod (67) is rotatably connected to the top of the sliding plate (63), and a plurality of mounting holes (613) are formed in the surface of the rotating rod (67), the internal surface fixedly connected with spring (68) of mounting hole (613), the one end fixedly connected with sliding block (69) of spring (68), the equal fixedly connected with stopper (610) in both sides of rotating sleeve (66) bottom.

5. The three-phase dry-type transformer of claim 4, wherein vertical grooves are formed in both sides of the surface of the rotating rod (67), a bar-shaped rod (611) is slidably connected to the inner surface of each vertical groove, and the top end of the bar-shaped rod (611) penetrates through the rotating rod (67) and extends to the outside of the rotating rod (67).

6. A three-phase dry transformer according to claim 4, wherein the outer surface of the sliding plate (63) is sleeved with a rubber sleeve (612), and the outer surface of the rubber sleeve (612) is in contact with the inner surface of the storage box (53).

Technical Field

The invention relates to the technical field of transformers, in particular to a three-phase dry-type transformer.

Background

Three-phase dry-type transformers are the main components of various power supplies and electrical equipment. The device changes an alternating voltage by using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil and an iron core (magnetic core). In electrical equipment and wireless circuits, the high-voltage power supply is commonly used for voltage lifting, impedance matching, safety isolation and the like. In a generator, an electric potential is induced in a coil, whether the coil is moved through a magnetic field or the magnetic field is moved through a stationary coil, in both cases the value of the flux is constant, but the amount of flux linked to the coil varies, which is the principle of mutual induction. A transformer is a device for transforming voltage, current and impedance by using mutual electromagnetic induction.

At present, the cooling mode of the three-phase dry type transformer is that airflow is blown out of the surface of a winding through a fan, but the airflow is difficult to completely pass through a cooling channel between a high-voltage winding and a low-voltage winding, so that the cooling effect is poor, and when the whole transformer is in a high load state, the risk of burning is likely to exist.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a three-phase dry-type transformer, which solves the problem that the existing three-phase dry-type transformer has poor heat dissipation effect.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a three-phase dry-type transformer, includes the base, is located three winding on the base and is located base bottom both sides and passes through bolted connection's support frame, every equal fixedly connected with supporting shoe all around of winding bottom, the bottom of supporting shoe and the top fixed connection of base, every winding include the iron core respectively and overlap in proper order and locate low voltage winding and the high voltage winding in the iron core outside, form cooling channel between low voltage winding and the high voltage winding, the inside that is located cooling channel is provided with the aviation baffle, through high-voltage connection generating line electric connection between the three winding, the top of base and the outside that is located the supporting shoe are provided with cooling module, two the both sides at support frame top all are provided with the removal subassembly.

As a further scheme of the invention: the cooling module is including the solid fixed ring that is located the base top, solid fixed ring's one side is provided with the connecting block, the thing box is put to one side fixedly connected with of connecting block, a plurality of ventilation hole has been seted up to the surface of putting the thing box, the internal surface fixedly connected with driving motor who puts the thing box, driving motor's output fixedly connected with rotating fan blade, the internal surface fixedly connected with baffle of putting the thing box, one side of baffle is provided with a plurality of through-hole, the one side of putting the thing box is provided with the vent, the ventilation hole has been seted up to one side of connecting block.

As a further scheme of the invention: the fixed ring is a hollow ring and is used for blowing upward air flow.

As a further scheme of the invention: the movable assembly comprises a limiting box and sliding holes, the limiting box is located at the top of the support frame, the sliding holes are located in two sides of the top of the support frame, sliding plates are arranged inside the limiting box, vertical rods are fixedly connected to two sides of the bottom of each sliding plate, the outer surfaces of the vertical rods are connected with the inner surfaces of the sliding holes in a sliding mode, two rotating wheels are connected between the two opposite sides of the vertical rods in a rotating mode, a rotating sleeve penetrates through the top of the limiting box, the inner surface of the rotating sleeve is connected with a rotating rod in a rotating mode, the bottom end of the rotating rod is connected with the top of the sliding plates in a rotating mode, a plurality of mounting holes are formed in the surface of the rotating rod, springs are fixedly connected to the inner surfaces of the mounting holes, sliding blocks are fixedly connected to one ends of the springs, and limiting blocks are fixedly connected to two sides of the bottom of the rotating sleeve.

As a further scheme of the invention: perpendicular groove has all been seted up to the both sides on rotating rod surface, erects the internal surface sliding connection in groove and has the bar pole, the outside of dwang and extension to dwang is run through on the top of bar pole.

As a further scheme of the invention: the outer surface of the sliding plate is sleeved with a rubber sleeve, and the outer surface of the rubber sleeve is in contact with the inner surface of the storage box.

As a further scheme of the invention: the use method of the three-phase dry-type transformer comprises the following steps: firstly lifting the transformer, pinching the sliding blocks on two sides of the rotating rod to enable the sliding blocks to move towards the inside of the mounting hole, enabling the spring to be in a compressed state, then pressing the rotating rod downwards to enable the rotating rod to push the sliding plate to slide downwards in the limiting box, further pushing the two vertical rods to slide downwards in the sliding hole, enabling the rotating wheel to be in contact with the ground, meanwhile, the sliding blocks slide out of the mounting hole under the pushing of the spring and are in contact with the limiting blocks at the bottom of the rotating sleeve to limit the height of the rotating wheel, then inserting the bar-shaped rod into the inside of the vertical groove to prevent the rotating rod from rotating, then pushing the whole transformer to move, after moving to a proper position, drawing the bar-shaped rod out of the inside of the vertical groove, lifting the transformer again, enabling the rotating rod to rotate, and enabling the sliding blocks to be located between the two limiting blocks, under the action of gravity, the sliding plate slides upwards in the limiting box, and the supporting frame is contacted with the ground;

and starting a driving motor, so that the rotating fan blades are driven to rotate, air flow is sucked from the outside through the air holes and blown out from the through holes in the baffle plate, the air flow is sent to the inside of the fixing ring through the connecting block, and the air flow is uniformly blown to the inside of the cooling channel through the air deflector from the open fixing ring, so that the high-voltage winding and the low-voltage winding are cooled.

The invention has the beneficial effects that:

(1) in the invention, the air deflector is arranged in the cooling channel, the cooling component is arranged at the top of the base and outside the supporting block, the cooling component comprises a fixing ring arranged at the top of the base, one side of the fixing ring is provided with a connecting block, one side of the connecting block is fixedly connected with a storage box, the outer surface of the storage box is provided with a plurality of ventilation holes, the inner surface of the storage box is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a rotating fan blade, the inner surface of the storage box is fixedly connected with a baffle, one side of the baffle is provided with a plurality of through holes, one side of the storage box is provided with a ventilation hole, one side of the connecting block is provided with the ventilation holes, the bottom wind energy can be uniformly blown to the inside of the cooling channel by arranging the inclined air deflector, and meanwhile, the driving motor in the storage box is used for driving the rotating fan blade to blow air flow, the annular fixing ring blows upward airflow to the inside of the cooling channel, and the cooling effect can be greatly improved through the structure, so that the transformer can work under the condition of high load for a long time.

(2) In the invention, moving components are arranged on two sides of the top of two support frames respectively, each moving component comprises a limiting box positioned on the top of the support frame and sliding holes positioned on two sides of the top of the support frame, a sliding plate is arranged in the limiting box, vertical rods are fixedly connected on two sides of the bottom of the sliding plate respectively, the outer surface of each vertical rod is in sliding connection with the inner surface of each sliding hole, a rotating wheel is rotatably connected between one opposite sides of the two vertical rods, a rotating sleeve penetrates through the top of the limiting box, a rotating rod is rotatably connected on the inner surface of the rotating sleeve, the bottom end of the rotating rod is rotatably connected with the top of the sliding plate, a plurality of mounting holes are formed in the surface of the rotating rod, a spring is fixedly connected on the inner surface of each mounting hole, a sliding block is fixedly connected at one end of the spring, limiting blocks are fixedly connected on two sides of the bottom of the rotating sleeve, and the limiting boxes are arranged in the moving components to be matched with the sliding plates in the limiting boxes and the rotating wheels between the two vertical rods, the sliding block in the dwang is recycled, the position of rotating the wheel can be adjusted through the restriction of stopper to the sliding block, when rotating wheel and bottom surface contact, can make whole transformer remove, when rotating the wheel not with the bottom surface contact, can make things convenient for whole transformer to remove through the support of support frame, compare in traditional transport mode of making a round trip and can reduce workman's intensity of labour when being difficult for rocking.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a partial sectional view of a transformer according to the present invention;

FIG. 2 is a sectional top view of a partial structure of a winding in the present invention;

FIG. 3 is a schematic view of the internal structure of the storage case of the present invention;

FIG. 4 is a partial sectional view of the retaining ring of the present invention;

FIG. 5 is a schematic view of the overall structure of the moving assembly of the present invention;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 5;

FIG. 7 is a sectional plan view showing the outer structure of a rotating lever in the present invention;

fig. 8 is an overall external configuration diagram of the present invention.

In the figure: 1. a base; 2. a winding; 21. an iron core; 22. a low voltage winding; 23. a high voltage winding; 24. a cooling channel; 25. an air deflector; 3. a support frame; 4. a support block; 5. a cooling assembly; 51. a fixing ring; 52. connecting blocks; 53. a storage box; 54. a vent hole; 55. a drive motor; 56. rotating the fan blades; 57. a baffle plate; 58. a through hole; 59. a vent; 6. a moving assembly; 61. a limiting box; 62. a slide hole; 63. a sliding plate; 64. a vertical rod; 65. a rotating wheel; 66. rotating the sleeve; 67. rotating the rod; 68. a spring; 69. a slider; 610. a limiting block; 611. a bar-shaped rod; 612. a rubber sleeve; 613. and (7) installing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a three-phase dry-type transformer includes a base 1, three windings 2 on the base 1, and a support frame 3 located on two sides of the bottom of the base 1 and connected by bolts, the support frame 3 is preferably shaped like a Chinese character 'ao', the periphery of the bottom of each winding 2 is fixedly connected with a support block 4, the four support blocks 4 are arranged oppositely, the bottom of each support block 4 is fixedly connected with the top of the base 1, each winding 2 includes an iron core 21, and a low-voltage winding 22 and a high-voltage winding 23 sequentially sleeved outside the iron core 21, a cooling channel 24 is formed between the low-voltage winding 22 and the high-voltage winding 23, an air deflector 25 is arranged inside the cooling channel 24, the air deflector 25 is inclined and has an arc shape, so as to accelerate air flow and simultaneously enable uniform cooling of the high-voltage winding 23 and the low-voltage winding 22, the three windings 2 are electrically connected by a high-voltage connection bus, the cooling component 5 is arranged at the top of the base 1 and outside the supporting block 4, airflow blown out of the cooling component 5 can be sent to the cooling channel 24, and the moving components 6 are arranged on two sides of the top of the two supporting frames 3.

In the invention, the cooling assembly 5 comprises a fixing ring 51 positioned at the top of the base 1, one side of the fixing ring 51 is provided with a connecting block 52, the connecting block 52 is used for supporting an object placing box 53, one side of the connecting block 52 is fixedly connected with the object placing box 53, the outer surface of the object placing box 53 is provided with a plurality of vent holes 54, the vent holes 54 are air inlets for generating air flow, the inner surface of the object placing box 53 is fixedly connected with a driving motor 55, the driving motor 55 is electrically connected with an external power supply, the output end of the driving motor 55 is fixedly connected with rotating fan blades 56, the inner surface of the object placing box 53 is fixedly connected with a baffle 57, one side of the baffle 57 is provided with a plurality of through holes 58, the through holes 58 on the baffle 57 are of a gradual change type, a large air flow blown by the rotating fan blades 56 can be dispersed, and the influence of the air flow which cannot be blown from the vent 59 to the inside of the fixing ring 51 on the subsequent air flow can be prevented, one side of the storage box 53 is provided with a vent 59, and one side of the connecting block 52 is provided with a vent hole 54.

In the present invention, the fixing ring 51 is a hollow ring, the fixing ring 51 is used for blowing an upward air flow, the fixing ring 51 may be formed by folding a plate, and the fixing ring 51 is open, and the air flow may be blown upward as shown in fig. 4.

In the invention, the moving assembly 6 comprises a limiting box 61 positioned at the top of the support frame 3 and sliding holes 62 positioned at two sides of the top of the support frame 3, a sliding plate 63 is arranged inside the limiting box 61, two sides of the bottom of the sliding plate 63 are fixedly connected with vertical rods 64, the outer surface of each vertical rod 64 is slidably connected with the inner surface of the corresponding sliding hole 62, a rotating wheel 65 is rotatably connected between the opposite sides of the two vertical rods 64, a rotating sleeve 66 penetrates through the top of the limiting box 61, the inner surface of the rotating sleeve 66 is rotatably connected with a rotating rod 67, the bottom end of the rotating rod 67 is rotatably connected with the top of the sliding plate 63, a plurality of mounting holes 613 are formed in the surface of the rotating rod 67, a spring 68 is fixedly connected to the inner surface of each mounting hole 613, a sliding block 69 is fixedly connected to one end of the spring 68, and limiting blocks 610 are fixedly connected to two sides of the bottom of the rotating sleeve 66, when stopper 610 and slider 69 contact, can produce great friction, through set up spacing box 61 in removal subassembly 6, sliding plate 63 and the rotation wheel 65 between two montants 64 in the spacing box 61 of cooperation, reuse slider 69 in the dwang 67, through the restriction of stopper 610 to slider 69, can adjust the position of rotating wheel 65, when rotating wheel 65 and bottom surface contact, can make whole transformer remove, when rotating wheel 65 not with the bottom surface contact, can place whole transformer through the support of support frame 3 and remove, compare in traditional transport mode and be convenient for remove when being difficult for rocking.

In the invention, vertical grooves are formed in both sides of the surface of the rotating rod 67, a strip-shaped rod 611 is connected to the inner surface of each vertical groove in a sliding manner, a flat head is arranged at the top of the rotating rod 67, the top end of the strip-shaped rod 611 penetrates through the rotating rod 67 and extends to the outside of the flat head in the rotating rod 67, when the height of the rotating wheel 65 needs to be adjusted, the strip-shaped rod 611 needs to be pulled out of the rotating rod 67, and the outer surface of the strip-shaped rod 611 is matched with the inner surface of the rotating sleeve 66 to prevent the rotating rod 67 from rotating randomly.

In the present invention, the outer surface of the sliding plate 63 is sleeved with a rubber sleeve 612, the rubber sleeve 612 is sleeved for increasing friction force, the sliding plate 63 is placed to slide rapidly downwards, and the outer surface of the rubber sleeve 612 is in contact with the inner surface of the storage box 53.

The working principle of the invention is as follows: firstly, the transformer is lifted, the sliding blocks 69 at the two sides of the rotating rod 67 are pinched, the sliding blocks 69 move towards the inner part of the mounting hole 613, the spring 68 is in a compressed state, then the rotating rod 67 is pressed downwards, the rotating rod 67 pushes the sliding plate 63 to slide downwards in the limiting box 61, the two vertical rods 64 are further pushed to slide downwards in the sliding hole 62, so that the rotating wheel 65 is in contact with the ground, meanwhile, the sliding blocks 69 slide out of the mounting hole 613 under the pushing of the spring 68 and are in contact with the limiting blocks 610 at the bottom of the rotating sleeve 66, so that the height of the rotating wheel 65 is limited, then the strip-shaped rod 611 is inserted into the inner part of the vertical groove, so that the rotating rod 67 is prevented from rotating, at the moment, the whole transformer can be pushed to move, the transformer does not need to be repeatedly carried to a mobile device by a worker, and after the transformer is moved to a proper position, the bar-shaped rod 611 is pulled out from the inside of the vertical groove, the transformer is lifted again, the rotating rod 67 is rotated, the sliding block 69 is positioned between the two limiting blocks 610, the sliding plate 63 slides upwards in the limiting box 61 under the action of gravity, and at the moment, the support frame 3 is in contact with the ground, so that the transformer is not easy to move;

start driving motor 55 to drive rotating fan 56 and rotate, produce the suction air current and blow out from the through-hole 58 on baffle 57 through ventilation hole 54 from the external world, send to the inside of solid fixed ring 51 through connecting block 52, and from open solid fixed ring 51 department through the even inside of blowing to cooling channel 24 of aviation baffle 25, cool off high voltage winding 23 and low voltage winding 22, the heat blows out from the top, compare in traditional cooling method, the effect is better, can make the transformer can be for a long time be in and carry out work under the high load condition.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.