A 500kV shell type transformer T-shaped beam body support structure and method

Abstract

The present application relates to a kind of 500kV shell type transformer T-shaped beam body support structure and method, belong to transformer manufacturing technical field.The technical scheme is: the lower oil tank (15) is set along the lower T-shaped beam (3) in upper tank, and the lower T-shaped beam (3) both ends and oil tank overlap place are placed insulation paper board (4) and are insulated;Stacked core (19) is placed on the lower T-shaped beam (3) upside, and the upper T-shaped beam (2) is set on the upper tank of the middle oil tank (16);Magnetic shield plate two (21) is driven between the upper T-shaped beam (2) and wire cake (24), and insulation piece (25) is inserted between magnetic shield plate two (21) and wire cake (24), and body is tightened.The beneficial effects of the present application are: using the structure of T-shaped beam, maximum limit is firmly supported by body, simple structure, convenient and feasible, by using on 500kV shell type transformer, improve the reliability of body support.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of 500kV shell type transformer T type beam body support structure and method, belong to transformer manufacturing technical field. BACKGROUND

[0002] Power transformer is mainly divided into core type transformer and shell type transformer.The core of shell type transformer is like the shell of body, there is always iron core or yoke on both sides of any winding in structure, generally core type winding is placed vertically, while shell type winding is placed horizontally.Core type transformer body is fitted on iron core column, supported by the web of lower clamp piece and the upper limb plate of lower clamp piece.In shell type transformer, the line cake is rectangular structure and placed vertically, the inside and outside of line cake are iron core, the shell type core of prior art shell type transformer is supported by oil tank, which is time-consuming and laborious to assemble, very inconvenient, and the body support is not firm. SUMMARY

[0003] The present application provides a kind of 500kV shell type transformer T type beam body support structure and method, simple structure, easy operation, high reliability of body support, solve the above technical problems existing in prior art.

[0004] The technical scheme of the present application is:

[0005] A kind of 500kV shell type transformer T type beam body support structure, transformer oil tank is combined by lower section oil tank, middle section oil tank and upper section oil tank, lower T type beam is arranged on the upper tank rail of lower section oil tank, and the overlapping place of the two ends of lower T type beam and oil tank is placed insulating paper board for insulation;Iron core is stacked on the upper side of lower T type beam, and the upper surface of iron core is provided with upper T type beam, and the two ends of upper T type beam are arranged on the upper tank rail of middle section oil tank;Magnetic shielding plate two is punched between upper T type beam and line cake, and insulating piece is inserted between magnetic shielding plate two and line cake, to tighten the body, and corner insulation piece is arranged between the upper surface of iron core and upper T type beam.

[0006] The lower T type beam includes vertical plate, horizontal plate, limiting plate and magnetic shielding plate one, the vertical plate and horizontal plate form T type structure, and the vertical plate and horizontal plate are respectively provided with oil passage one and oil passage two, the magnetic shielding plate one is welded on the lower side of horizontal plate, and the limiting plate is welded between horizontal plate and magnetic shielding plate one, to firmly connect the lower T type beam into one body.

[0007] The magnetic shielding plate one and magnetic shielding plate two are same in structure, the magnetic shielding plate one includes steel plate, support plate, electrical steel strip and clamping plate, the electrical steel strip is welded into one body by steel plate, support plate and clamping plate, to form magnetic shielding plate one, and the magnetic shielding plate one has ladder structure suitable for installation space.

[0008] The upper T type beam is composed of bent plate and guide plate arranged perpendicularly.

[0009] The T-shaped structure of the lower T-shaped beam and the upper T-shaped beam improves the stability of the body, and the vertical plate of the lower T-shaped beam and the guide plate of the upper T-shaped beam are located on the center line of the body and are inserted into the central gap of the iron core.

[0010] A 500kV shell type transformer T-shaped beam body support method, first, the body of the three-phase shell type transformer is placed on the coil support table at the bottom of the lower oil tank, then the two ends of the lower T-shaped beam are placed on the upper tank along of the lower oil tank, 3mm thick insulating paper board is placed on the upper tank along of the lower oil tank, then the two ends of the lower T-shaped beam are placed on the insulating paper board; after the lower T-shaped beam is placed, the iron core is stacked on the upper side of the lower T-shaped beam, after the iron core is stacked to the predetermined height, the upper T-shaped beam is placed on the iron core; finally, the magnetic shielding plate two is punched between the upper T-shaped beam and the wire cake, and the insulating piece is inserted between the magnetic shielding plate two and the wire cake, and the body is tightened.

[0011] The beneficial effects of the present application are: by using the structure of the T-shaped beam, the body is supported firmly to the maximum, the structure is simple, convenient and feasible, and by using on the 500kV shell type transformer, the reliability of the body support is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a side view schematic diagram of the assembly of the T-shaped beam and the body of the embodiment of the present application;

[0013] Figure 2 It is a schematic diagram of the assembly of the T-shaped beam and the body of the embodiment of the present application;

[0014] Figure 3 It is a schematic diagram of the lower T-shaped beam of the embodiment of the present application;

[0015] Figure 4 It is a side view schematic diagram of the lower T-shaped beam of the embodiment of the present application;

[0016] Figure 5 It is a top view schematic diagram of the lower T-shaped beam of the embodiment of the present application;

[0017] Figure 6 It is a schematic diagram of the magnetic shielding plate of the embodiment of the present application;

[0018] Figure 7 It is a side view schematic diagram of the magnetic shielding plate of the embodiment of the present application;

[0019] Figure 8 It is a schematic diagram of the upper T-shaped beam of the embodiment of the present application;

[0020] Figure 9 It is a side view schematic diagram of the upper T-shaped beam of the embodiment of the present application;

[0021] Figure 10 It is a top view schematic diagram of the upper T-shaped beam of the embodiment of the present application;

[0022] Figure 11 Fig. 2 is a schematic view of the magnetic shielding structure of the upper T-shaped beam of the embodiment of the present application;

[0023] In the figure: body 1, upper T-shaped beam 2, lower T-shaped beam 3, insulating paper board 4, vertical plate 5, horizontal plate 6, limiting plate 7, magnetic shielding plate one 8, steel plate 9, support plate 10, electrical steel strip 11, clamping plate 12, bent plate 13, guide plate 14, lower oil tank 15, middle oil tank 16, upper oil tank 17, coil support platform 18, iron core 19, body center line 20, magnetic shielding plate two 21, oil passage one 22, oil passage two 23, coil cake 24, insulating part 25, center gap 26, stepped structure 27, corner insulation part 28. DETAILED DESCRIPTION

[0024] The present application will be further described by embodiments in combination with the accompanying drawings.

[0025] A 500kV shell type transformer T-shaped beam body support structure, the transformer oil tank is composed of a lower oil tank 15, a middle oil tank 16 and an upper oil tank 17, a lower T-shaped beam 3 is arranged on the upper tank of the lower oil tank 15, and insulating paper boards 4 are arranged at the overlapping parts of the two ends of the lower T-shaped beam 3 and the oil tank for insulation; an iron core 19 is stacked on the upper side of the lower T-shaped beam 3, and an upper T-shaped beam 2 is arranged on the upper surface of the iron core 19, and the two ends of the upper T-shaped beam 2 are arranged on the upper tank of the middle oil tank 16; a magnetic shielding plate two 21 is punched into between the upper T-shaped beam 2 and the coil cake 24, and an insulating part 25 is inserted between the magnetic shielding plate two 21 and the coil cake 24 to tighten the body, and a corner insulation part 28 is arranged between the upper surface of the iron core 19 and the upper T-shaped beam 2.

[0026] The lower T-shaped beam 3 comprises a vertical plate 5, a horizontal plate 6, a limiting plate 7 and a magnetic shielding plate one 8, the vertical plate 5 and the horizontal plate 6 form a T-shaped structure, the vertical plate and the horizontal plate are respectively provided with an oil passage one 22 and an oil passage two 23, and the magnetic shielding plate one 8 is welded on the lower side of the horizontal plate, and the limiting plate 7 is welded between the horizontal plate 6 and the magnetic shielding plate one 8 to firmly connect the lower T-shaped beam into one body.

[0027] The magnetic shielding plate one 8 and the magnetic shielding plate two 21 have the same structure, the magnetic shielding plate one 8 comprises a steel plate 9, a support plate 10, an electrical steel strip 11 and a clamping plate 12, the electrical steel strip 11 is welded into one body by the steel plate 9, the support plate 10 and the clamping plate 12 around the electrical steel strip 11 to form the magnetic shielding plate one 8, and the magnetic shielding plate one 8 is provided with a stepped structure 27 which is adapted to the installation space.

[0028] The upper T-shaped beam 2 comprises bent plates 13 and guide plates 14 which are arranged perpendicularly to each other to form a T-shaped structure, in the embodiment, two bent plates 13 are arranged horizontally in a row, the two bent plates 13 are welded together by the guide plates 14, and the two bent plates 13 are welded into the upper T-shaped beam structure by several guide plates 14.

[0029] The T-shaped structure of the lower T-beam 3 and the upper T-beam 2 improves the stability of the body, and the vertical plate 5 of the lower T-beam 3 and the guide plate 14 of the upper T-beam 2 are located on the body center line 20 and inserted into the central gap 26 of the core 19.

[0030] The corner insulation 28 is a right-angle bent structure and wraps around the core 19.

[0031] A 500kV shell-type transformer T-beam body support method, first, the body 1 of the three-phase shell-type transformer is placed on the coil support table 18 at the bottom of the lower oil tank 15, then the two ends of the lower T-beam 3 are placed on the upper tank edge of the lower oil tank 15, a 3mm thick insulation paper board 4 is placed on the upper tank edge of the lower oil tank, then the two ends of the lower T-beam 3 are placed on the insulation paper board 4; after the lower T-beam 3 is placed, the core 19 is stacked on the upper side of the lower T-beam 3, after the core is stacked to a predetermined height, the upper T-beam 2 is placed on the core 19; finally, the magnetic shielding plate two 21 is punched between the upper T-beam 2 and the wire cake 24, and the insulation 25 is inserted between the magnetic shielding plate two 21 and the wire cake 24, the body is tightened, and the corner insulation 28 is arranged between the upper side of the core 19 and the upper T-beam 2.

[0032] The gap between the lower T-beam 3 and the wire cake 24 is also filled with insulation material, and the body is tightened.

Claims

1. A 500 kV shell-type transformer T-beam body support structure, characterized in that: The transformer oil tank is composed of a lower oil tank (15), a middle oil tank (16) and an upper oil tank (17), a lower T-shaped beam (3) is arranged on the upper edge of the lower oil tank (15), and an insulating paper board (4) is arranged at the overlapping position of the two ends of the lower T-shaped beam (3) and the oil tank for insulation; a stacked iron core (19) is arranged on the upper side of the lower T-shaped beam (3), an upper T-shaped beam (2) is arranged on the upper surface of the iron core (19), and the two ends of the upper T-shaped beam (2) are arranged on the upper edge of the middle oil tank (16); a magnetic shielding plate two (21) is punched between the upper T-shaped beam (2) and a wire cake (24), an insulating piece (25) is inserted between the magnetic shielding plate two (21) and the wire cake (24), a tensioner body is tightened, and an angle wrapping insulating piece (28) is arranged between the upper surface of the iron core (19) and the upper T-shaped beam (2); the lower T-shaped beam (3) comprises a vertical plate (5), a horizontal plate (6), a limiting plate (7) and a magnetic shielding plate one (8), the vertical plate (5) and the horizontal plate (6) form a T-shaped structure, oil holes one (22) and oil holes two (23) are respectively formed in the vertical plate and the horizontal plate, the magnetic shielding plate one (8) is welded on the lower side of the horizontal plate, and the limiting plate (7) is welded between the horizontal plate (6) and the magnetic shielding plate one (8), so that the lower T-shaped beam is firmly connected into an integral whole; the magnetic shielding plate one (8) has the same structure as the magnetic shielding plate two (21), the magnetic shielding plate one (8) comprises a steel plate (9), a support plate (10), an electrical steel strip (11) and a clamping plate (12), the electrical steel strip (11) is welded into an integral whole by the steel plate (9), the support plate (10) and the clamping plate (12) around the electrical steel strip (11), forming the magnetic shielding plate one (8), and the magnetic shielding plate one (8) has a stepped structure (27) adapted to the mounting space; the upper T-shaped beam (2) comprises a bent plate (13) and a guide plate (14) arranged perpendicularly to each other and forming a T-shaped structure; the two bent plates (13) are arranged horizontally in a row, and the two bent plates (13) are welded together through the guide plate (14), and the two bent plates (13) are welded into the upper T-shaped beam structure through a plurality of guide plates (14).

2. The 500kV shell-type transformer T-beam body support structure according to claim 1, characterized in that: The vertical plate (5) of the lower T-shaped beam (3) and the guide plate (14) of the upper T-shaped beam (2) are located on the center line (20) of the body and are inserted into the central gap (26) of the iron core (19).

3. The 500kV shell-type transformer T-beam body support structure according to claim 1 or 2, characterized in that: The angle wrapping insulating piece (28) is a right-angle bending structure wrapped on the iron core (19).

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