High-voltage winding structure of dual-voltage conversion dry-type power transformer

Abstract

The utility model discloses a high-voltage winding structure of a double-voltage conversion dry type power transformer, and relates to the technical field of transformers. The high-voltage winding comprises a bottom frame plate, a high-voltage winding body, two lower clamping pieces and two upper clamping pieces, the two lower clamping pieces are assembled at one end of the high-voltage winding body, the two upper clamping pieces are assembled at the other end of the high-voltage winding body, a fixing mechanism is arranged on the bottom frame plate, and a telescopic assembly is arranged on the fixing mechanism. Through cooperation of the fixing mechanism and the telescopic assembly, the two upper clamping pieces are located on the two sides of the upper end of the high-voltage winding body, the U-shaped limiting sleeves are connected with the ends of the upper clamping pieces in a sleeved mode, meanwhile, the U-shaped limiting sleeves are driven by the lead screws to vertically descend, and then the two lower clamping pieces are locked to the lower end of the high-voltage winding body through the locking bolts. Therefore, the assembly of the high-voltage winding main body is conveniently realized, the convenience of the assembly of the high-voltage winding main body is effectively improved, and the operation intensity of the assembly is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, in particular to a high-voltage winding structure of a dual-voltage conversion dry-type power transformer. Background Art

[0002] The iron core of the dry-type power transformer is made of high-permeability high-quality grain-oriented cold-rolled silicon steel sheets, with 45° fully inclined stepped joints. The iron core adopts a special square tube pull plate structure, the core column is tied with insulating tape, and the surface of the iron core is coated with a special resin to prevent moisture and rust, which effectively reduces no-load loss, no-load current and iron core noise;

[0003] The high-voltage winding structure of dry-type transformer is an important part of dry-type transformer. It adopts high-voltage winding coil impregnated with epoxy resin, which has excellent insulation and mechanical properties and is widely used in power system, petroleum, chemical industry and other industries.

[0004] However, the high voltage winding structure of dry-type transformer in the prior art still has some defects:

[0005] In the existing technology, when assembling the high-voltage winding structure of a dry-type transformer, a large number of bolts are required to lock and fix the upper clamps during the assembly process, which makes the assembly of the high-voltage winding structure inconvenient and the assembly work intensity high. Utility Model Content

[0006] In order to solve the problems of inconvenient assembly of the high-voltage winding structure of a dry-type transformer and high assembly work intensity; the purpose of the utility model is to provide a high-voltage winding structure of a dual-voltage conversion dry-type power transformer.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: a high-voltage winding structure of a dual-voltage conversion dry-type power transformer, comprising a base plate, a high-voltage winding body, two lower clamps and two upper clamps, the two lower clamps are assembled at one end of the high-voltage winding body, and the two upper clamps are assembled at the other end of the high-voltage winding body, the base plate is provided with a fixing mechanism, and the fixing mechanism is provided with a telescopic component;

[0008] The fixing mechanism includes two frame plates, one end of the two frame plates is fixedly connected to the upper surface of the bottom frame plate, the opposite sides of the two frame plates are provided with lifting seats, the upper and lower sides of the two lifting seats are provided with two U-shaped limiting sleeves, wherein two adjacent U-shaped limiting sleeves are arranged at one end of an upper clamp, the opposite sides of the two frame plates are provided with sliding grooves, one end of the two sliding grooves is slidably installed with sliders, the opposite sides of the two sliders are fixedly installed with L-shaped connecting frames, and one end of one of the L-shaped connecting frames is fixedly connected to the lower surface of a lifting seat.

[0009] Preferably, a lead screw is rotatably mounted on one end of the two frame plates away from the bottom frame plate, and one of the lead screws passes through a slide groove and is threadably connected to a slider.

[0010] Preferably, the telescopic assembly includes several guide blocks, one side of each of the guide blocks is fixedly mounted with an L-shaped connecting rod, one end of one of the L-shaped connecting rods is fixedly connected to one side of a U-shaped limiting sleeve, and two guide grooves are provided on the upper and lower surfaces of the two lifting seats, and one end of one of the guide blocks is slidably connected to a guide groove.

[0011] Preferably, the side walls of several of the guide grooves are fixedly mounted with telescopic rods, a piston end of one of the telescopic rods is fixedly connected to one side of a guide block, and the outer walls of several of the telescopic rods are movably sleeved with telescopic springs, one end of one of the telescopic springs is fixedly connected to the side wall of a guide groove, and the other end of one of the telescopic springs is fixedly connected to one side of a guide block.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, through the cooperation of the fixing mechanism and the telescopic assembly, the two upper clamps are located on both sides of the upper end of the high-voltage winding body, and the U-shaped limit sleeve is sleeved with the end of the upper clamp. At the same time, the U-shaped limit sleeve is driven to vertically descend by the lead screw, and then the two lower clamps are locked at the lower end of the high-voltage winding body by the locking bolt, so that the assembly of the high-voltage winding body can be completed, thereby facilitating the assembly of the high-voltage winding body, thereby effectively improving the convenience of the assembly of the high-voltage winding body and reducing the assembly work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The utility model is a schematic diagram of the overall structure of a high-voltage winding structure of a dual-voltage conversion dry-type power transformer.

[0016] Figure 2 It is a schematic diagram of the separation structure of the high-voltage winding body and the upper clamping piece and the separation structure of the fixing mechanism and the upper clamping piece of the utility model.

[0017] Figure 3 It is a schematic diagram of the connection structure between the fixing mechanism and the upper clamp of the utility model.

[0018] Figure 4 For this utility model Figure 3 A magnified schematic diagram of part A in FIG.

[0019] Figure 5 For this utility model Figure 3 An enlarged schematic diagram of part B in FIG.

[0020] In the figure: 1. base plate; 2. high-voltage winding body; 3. lower clamp; 31. locking bolt; 4. upper clamp; 5. fixing mechanism; 51. frame plate; 52. lifting seat; 53. U-shaped limit sleeve; 54. anti-skid pad; 55. slide groove; 56. slider; 57. L-shaped connecting frame; 58. lead screw; 59. ball handle; 6. telescopic assembly; 61. guide block; 62. L-shaped connecting rod; 63. guide groove; 64. telescopic rod; 65. telescopic spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example: Figure 1-5 As shown, the utility model provides a high-voltage winding structure of a dual-voltage conversion dry-type power transformer, including a base plate 1, a high-voltage winding body 2, two lower clamps 3 and two upper clamps 4, the two lower clamps 3 are assembled at one end of the high-voltage winding body 2, and the two upper clamps 4 are assembled at the other end of the high-voltage winding body 2, and a fixing mechanism 5 is provided on the base plate 1, and a telescopic component 6 is provided on the fixing mechanism 5. The high-voltage winding body 2 consists of a high-voltage winding coil, a low-voltage winding coil and an iron core. This is a prior art and is not described in detail here. By setting the fixing mechanism 5, the fixing mechanism 5 can make the two upper clamps 4 rise and fall vertically, so that the high-voltage winding body 2 can be limited, so that the high-voltage winding body 2 can be stably fixed between the two lower clamps 3, thereby improving the convenience of assembling the high-voltage winding body 2, and by setting the telescopic component 6, the telescopic component 6 can facilitate the operator to disassemble the high-voltage winding body 2;

[0023] The fixing mechanism 5 includes two frame plates 51, one end of the two frame plates 51 is fixedly connected to the upper surface of the bottom frame plate 1, the opposite sides of the two frame plates 51 are provided with lifting seats 52, the upper and lower surfaces of the two lifting seats 52 are provided with two U-shaped limiting sleeves 53, wherein two adjacent U-shaped limiting sleeves 53 are arranged at one end of an upper clamp 4, the opposite sides of the two frame plates 51 are provided with sliding grooves 55, one end of the two sliding grooves 55 is slidably installed with sliders 56, and the opposite sides of the two sliders 56 are fixedly installed with L-shaped connecting A frame 57, one end of which is an L-shaped connecting frame 57 and a lower surface of a lifting seat 52 are fixedly connected. By setting a U-shaped limiting sleeve 53, when the U-shaped limiting sleeve 53 is sleeved with the end of the upper clamp 4, the lifting seat 52 is driven to rise and fall vertically, and the U-shaped limiting sleeve 53 can make the upper clamp 4 rise and fall synchronously, so that the upper clamp 4 is in contact with or separated from the upper end of the high-voltage winding body 2, and the slider 56 is driven to rise and fall vertically in the slide groove 55. The slider 56 can make the lifting seat 52 rise and fall vertically through the L-shaped connecting frame 57.

[0024] Both ends of the two lower clamps 3 are equipped with locking bolts 31. By setting the locking bolts 31, the locking bolts 31 can lock the two lower clamps 3, so that the two lower clamps 3 are fixed to the lower end of the high-voltage winding body 2. This is the prior art and will not be elaborated here.

[0025] Two anti-skid pads 54 are fixedly installed on the inner walls of the four U-shaped limiting sleeves 53. The anti-skid pads 54 are in active contact with the ends of the upper clamping piece 4. By providing the anti-skid pads 54, the anti-skid pads 54 can improve the stability of the U-shaped limiting sleeves 53 after being sleeved with the upper clamping piece 4.

[0026] A lead screw 58 is rotatably mounted on one end of the two frame plates 51 away from the base plate 1. One of the lead screws 58 passes through a slide groove 55 and is threadedly rotatably connected to a slider 56. By rotating the lead screw 58, the lead screw 58 can drive the slider 56 to rise and fall vertically in the slide groove 55.

[0027] A ball handle 59 is fixedly mounted at one end of each of the two lead screws 58 . The provision of the ball handle 59 makes it easier for operators to rotate the lead screws 58 .

[0028] The telescopic assembly 6 includes a plurality of guide blocks 61, one side of which is fixedly installed with an L-shaped connecting rod 62, one end of which is fixedly connected to one side of the U-shaped limiting sleeve 53, and two guide grooves 63 are provided on the upper and lower sides of the two lifting seats 52, one end of which is slidably connected to one end of one guide block 61 and one guide groove 63. By setting the guide block 61, the L-shaped connecting rod 62 and the guide groove 63, the guide block 61 can slide horizontally along the inner wall of the guide groove 63, and the guide block 61 can make the U-shaped limiting sleeve 53 and the end of the upper clamp 4 be connected or separated through the L-shaped connecting rod 62. When connected, the upper end of the high-voltage winding body 2 can be limited, and when separated, the upper clamp 4 can be taken out to release the limiting fixation of the high-voltage winding body 2.

[0029] The side walls of several guide grooves 63 are fixedly installed with telescopic rods 64, the piston end of one telescopic rod 64 is fixedly connected to one side of a guide block 61, and the outer walls of several telescopic rods 64 are movably sleeved with telescopic springs 65, one end of one telescopic spring 65 is fixedly connected to the side wall of a guide groove 63, and the other end of one telescopic spring 65 is fixedly connected to one side of a guide block 61. By setting the telescopic rod 64 and the telescopic spring 65, the extended state of the telescopic rod 64 and the telescopic spring 65 can push the guide block 61 to move horizontally toward one side of the U-shaped limit sleeve 53, so that the U-shaped limit sleeve 53 can always be sleeved with the end of the upper clamp 4.

[0030] When the high-voltage winding body 2 needs to be assembled, the operator first hoists the high-voltage winding body between the two upper clamps 4, and at the same time, the ends of the two upper clamps 4 are sleeved with the inner walls of the two adjacent U-shaped limit sleeves 53. As the hoisting equipment hoists the high-voltage winding body 2, the high-voltage winding body 2 slowly descends, and at the same time, the operator rotates the two ball handles 59 respectively, and the two ball handles 59 rotate the two lead screws 58, and the two lead screws 58 drive the two sliders 56 to slide vertically downward along the inner walls of the corresponding slide grooves 55. The two sliders 56 descend the two lifting seats 52 through the two L-shaped connecting frames 57, and the two lifting seats 52 cause multiple U-shaped limit sleeves 53 and the two upper clamps 4 to descend synchronously;

[0031] When the bottom end of the high-voltage sleeve body 2 contacts the upper surface of the base plate 1, the lifting is stopped, and then the two lower clamps 3 are placed on both sides of the high-voltage winding body 2 respectively, and the two ends of the two lower clamps 3 are locked by two locking bolts 31, thereby facilitating the assembly of the high-voltage winding body 2, thereby effectively improving the convenience of assembly of the high-voltage winding body 2 and reducing the assembly work intensity.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-voltage winding structure of a dual-voltage conversion dry-type power transformer, comprising a base plate (1), a high-voltage winding body (2), two lower clamps (3) and two upper clamps (4), wherein the two lower clamps (3) are assembled at one end of the high-voltage winding body (2), and the two upper clamps (4) are assembled at the other end of the high-voltage winding body (2), characterized in that: The bottom frame plate (1) is provided with a fixing mechanism (5), and the fixing mechanism (5) is provided with a telescopic component (6); The fixing mechanism (5) comprises two frame plates (51), one end of the two frame plates (51) is fixedly connected to the upper surface of the bottom frame plate (1), the opposite sides of the two frame plates (51) are provided with lifting seats (52), the upper and lower surfaces of the two lifting seats (52) are provided with two U-shaped limiting sleeves (53), wherein two adjacent U-shaped limiting sleeves (53) are arranged at one end of an upper clamp (4), the opposite sides of the two frame plates (51) are provided with sliding grooves (55), one end of the two sliding grooves (55) is slidably mounted with sliders (56), the opposite sides of the two sliders (56) are fixedly mounted with L-shaped connecting frames (57), and one end of one of the L-shaped connecting frames (57) is fixedly connected to the lower surface of a lifting seat (52).

2. A high voltage winding structure of a dual voltage conversion dry-type power transformer as claimed in claim 1, characterized in that: Both ends of the two lower clamping members (3) are equipped with locking bolts (31).

3. The high voltage winding structure of a dual voltage conversion dry-type power transformer according to claim 1, characterized in that: Two anti-skid pads (54) are fixedly mounted on the inner walls of the four U-shaped limiting sleeves (53), and the anti-skid pads (54) are in movable contact with the ends of the upper clamping piece (4).

4. The high voltage winding structure of a dual voltage conversion dry-type power transformer according to claim 1, characterized in that: A lead screw (58) is rotatably mounted on one end of the two frame plates (51) away from the bottom frame plate (1), wherein one of the lead screws (58) passes through a slide groove (55) and is threadably connected to a slider (56).

5. The high voltage winding structure of a dual voltage conversion dry-type power transformer according to claim 4, characterized in that: A spherical handle (59) is fixedly mounted on one end of each of the two lead screws (58).

6. The high voltage winding structure of a dual voltage conversion dry-type power transformer according to claim 1, characterized in that: The telescopic assembly (6) comprises a plurality of guide blocks (61), one side of each of the guide blocks (61) being fixedly mounted with an L-shaped connecting rod (62), one end of one of the L-shaped connecting rods (62) being fixedly connected to one side of a U-shaped limiting sleeve (53), and two guide grooves (63) being provided on the upper and lower surfaces of the two lifting seats (52), and one end of one of the guide blocks (61) being slidably connected to one of the guide grooves (63).

7. A high voltage winding structure of a dual voltage conversion dry-type power transformer as claimed in claim 6, characterized in that: A telescopic rod (64) is fixedly mounted on the side walls of the plurality of guide grooves (63), wherein a piston end of one of the telescopic rods (64) is fixedly connected to one side of a guide block (61), and a telescopic spring (65) is movably sleeved on the outer walls of the plurality of telescopic rods (64), wherein one end of one of the telescopic springs (65) is fixedly connected to the side wall of a guide groove (63), and the other end of one of the telescopic springs (65) is fixedly connected to one side of a guide block (61).

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