Transformer ascending flanged base explosion-proof structure

Abstract

The utility model relates to a transformer ascending flanged base explosion-proof structure, and belongs to the technical field of transformer manufacturing. According to the technical scheme, a middle barrel (21) and a lower barrel (22) are connected in a welded mode through an annular transformer ascending flanged base pressure releasing plate (16), and an inner ring of the transformer ascending flanged base pressure releasing plate (16) is connected with the top of the lower barrel (22) through a second transformer ascending flanged base pressure releasing plate welding seam (18); an outer ring of a transformer ascending flanged base pressure release plate (16) is connected with the bottom of the middle barrel (21) through a transformer ascending flanged base pressure release plate welding seam I (17); and an arc-shaped transformer ascending flanged base explosion-proof protection plate (8) is arranged outside the lower cylinder body (22) and covers the middle cylinder body (21) and the transformer ascending flanged base pressure release plate. The explosion-proof device has the beneficial effects that the explosion of the transformer ascending flanged base caused by thunder, lightning, short circuit and the like can be greatly reduced, so that the loss caused by the explosion is reduced, and the safety of workers is protected.

Description

Technical Field

[0001] The utility model relates to an explosion-proof structure of a transformer elevation seat, belonging to the technical field of transformer manufacturing. Background Art

[0002] Power transformers are one of the most complex and core electrical equipment in power systems. As voltage levels and transformer capacities increase, lightning overvoltages can cause explosions in transformer risers. While the probability of explosion is low, protective measures are necessary to prevent the potential damage. Utility Model Content

[0003] The purpose of this utility model is to provide an explosion-proof structure for a transformer riser, which can reduce the explosion of the transformer riser caused by lightning and short circuit, thereby reducing the losses caused by the explosion, protecting the safety of the staff, and effectively reducing the explosion problem of the transformer riser.

[0004] The technical solution of the utility model is:

[0005] A transformer riser explosion-proof structure includes a transformer riser assembly, a transformer oil conservator, a transformer oil tank, a transformer cooling system and a transformer bushing. The transformer oil tank is provided with a transformer oil conservator, a transformer cooling system and a transformer riser assembly, and the transformer bushing is provided on the transformer riser assembly; the transformer riser assembly includes a transformer riser explosion-proof protective plate, a transformer riser body, a transformer riser explosion-proof protective plate bracket, a transformer riser pressure release plate and a transformer riser support base. The transformer riser body is a cylindrical structure, consisting of an upper cylinder, a middle cylinder and a lower cylinder. The diameter of the middle cylinder is larger than that of the lower cylinder. The diameter of the body, the middle cylinder and the lower cylinder are welded together by a ring-shaped transformer riser seat pressure release plate, the inner ring of the transformer riser seat pressure release plate is connected to the top of the lower cylinder through the transformer riser seat pressure release plate weld 2, and the outer ring of the transformer riser seat pressure release plate is connected to the bottom of the middle cylinder through the transformer riser seat pressure release plate weld 1; an arc-shaped transformer riser seat explosion-proof protective plate is provided on the outside of the lower cylinder, which completely covers the middle cylinder and the transformer riser seat pressure release plate; the transformer riser seat explosion-proof protective plate is fixed to the transformer cooling system support of the transformer cooling system through the transformer riser seat explosion-proof protective plate bracket.

[0006] The lower cylinder is equipped with a transformer lifter protection hook, located below the transformer lifter pressure release plate. Multiple protection hooks are evenly distributed around the outer circumference of the lower cylinder. When the transformer lifter pressure release plate falls off, it rests on the transformer lifter protection hook to prevent it from falling to the ground. Transformer oil within the transformer lifter body flows out through the original location of the transformer lifter pressure release plate, thereby relieving pressure and achieving explosion protection.

[0007] The explosion-proof protective plate of the transformer raising seat is a semicircular structure and is arranged below the middle cylinder. The diameter of the explosion-proof protective plate of the transformer raising seat is the same as the diameter of the middle cylinder.

[0008] The bottom of the lower cylinder is arranged on the transformer raising seat support base, and the transformer raising seat support base supports the lower cylinder through the transformer raising seat support 1 and the transformer raising seat support 2.

[0009] The transformer lift support base is surrounded by an oil pool. The transformer oil released from the transformer lift body flows down through the inner side of the transformer lift explosion-proof protective plate and is drained into the oil pool at the bottom of the transformer.

[0010] The lower part of the explosion-proof protective plate of the transformer raising seat is connected to the supporting base of the transformer raising seat through protective plate connecting bolts.

[0011] The transformer raising seat protection hook is connected to the transformer raising seat body by welding.

[0012] When the pressure inside the transformer riser increases to the breaking pressure of the transformer riser pressure relief plate weld seam 1 and the transformer riser pressure relief plate weld seam 2, the transformer riser pressure relief plate falls and rests on the transformer riser protective hook. The transformer oil inside the transformer riser body flows out through the original installation location of the transformer riser pressure relief plate, thereby achieving the purpose of pressure relief and explosion protection. After the transformer oil flows out through the original installation location of the transformer riser pressure relief plate, the transformer riser explosion-proof protective plate drains the transformer oil into the transformer oil pool, preventing personal injury.

[0013] The beneficial effects of the utility model are that the explosion of the transformer riser caused by lightning, short circuit and the like can be greatly reduced, thereby reducing the losses caused by the explosion and protecting the safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall appearance structure of the embodiment of the utility model installed on a transformer;

[0015] Figure 2This is a front view of an embodiment of the utility model installed on a transformer;

[0016] Figure 3 This is a schematic diagram of the explosion-proof protective plate bracket of the transformer riser according to the embodiment of the utility model;

[0017] Figure 4 This is a schematic diagram of the bottom of the transformer riser body according to an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the utility model example in which the bottom of the explosion-proof protective plate of the transformer riser is removed;

[0019] Figure 6 This is a front view of the embodiment of the utility model without the explosion-proof protective plate of the transformer riser;

[0020] Figure 7 This is a side view of an embodiment of the utility model without the explosion-proof protective plate of the transformer elevation seat;

[0021] Figure 8 This is a schematic diagram of the structure between the cylinder and the lower cylinder in the embodiment of the present utility model;

[0022] In the figure: transformer riser assembly 1, transformer oil conservator 2, transformer oil tank 3, transformer cooling system 4, transformer bushing 5, transformer riser body 6, transformer riser support base 7, transformer riser explosion-proof protective plate 8, transformer riser explosion-proof protective plate bracket 9, connecting bolts 10, transformer cooling system support 11, protective plate connecting bolts 12, transformer riser support 13, transformer riser support 2 14, transformer riser protection hook 15, transformer riser pressure release plate 16, transformer riser pressure release plate weld 1 17, transformer riser pressure release plate weld 2 18, oil pool 19, upper cylinder 20, middle cylinder 21, lower cylinder 22. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and examples.

[0024] A transformer elevating seat explosion-proof structure, comprising a transformer elevating seat assembly 1, a transformer oil conservator 2, a transformer oil tank 3, a transformer cooling system 4 and a transformer bushing 5. The transformer oil tank 3 is provided with a transformer oil conservator 2, a transformer cooling system 4 and a transformer elevating seat assembly 1, and the transformer bushing 5 is provided on the transformer elevating seat assembly 1; the transformer elevating seat assembly 1 comprises a transformer elevating seat explosion-proof protective plate 8, a transformer elevating seat body 6, a transformer elevating seat explosion-proof protective plate bracket 9, a transformer elevating seat pressure release plate 16 and a transformer elevating seat support base 7. The transformer elevating seat body 6 is a cylindrical structure, consisting of an upper cylinder 20, a middle cylinder 21 and a lower cylinder 22. The diameter of the middle cylinder 21 is larger than that of the lower cylinder 2 2 in diameter, the middle cylinder 21 and the lower cylinder 22 are welded together by a ring-shaped transformer riser seat pressure release plate 16, the inner ring of the transformer riser seat pressure release plate 16 is connected to the top of the lower cylinder 22 through the transformer riser seat pressure release plate weld 2 18, and the outer ring of the transformer riser seat pressure release plate 16 is connected to the bottom of the middle cylinder 21 through the transformer riser seat pressure release plate weld 17; the outside of the lower cylinder 22 is provided with an arc-shaped transformer riser seat explosion-proof protective plate 8, which completely covers the middle cylinder 21 and the transformer riser seat pressure release plate 16; the transformer riser seat explosion-proof protective plate 8 is fixed to the transformer cooling system support 11 of the transformer cooling system 4 through the transformer riser seat explosion-proof protective plate bracket 9.

[0025] The lower cylinder 22 is provided with a transformer lifter protective hook 15, located below the transformer lifter pressure release plate 16. Multiple transformer lifter protective hooks 15 are evenly distributed around the outer circumference of the lower cylinder 22. When the transformer lifter pressure release plate 16 is removed, it rests on the transformer lifter protective hook 15 to prevent it from falling to the ground. Transformer oil within the transformer lifter body 6 flows out through the original location of the transformer lifter pressure release plate 16, thereby relieving pressure and achieving explosion protection.

[0026] The transformer riser explosion-proof protective plate 8 is a semicircular structure and is arranged below the middle cylinder 21 . The diameter of the transformer riser explosion-proof protective plate 8 is the same as the diameter of the middle cylinder 21 .

[0027] The bottom of the lower cylinder 22 is arranged on the transformer raising seat support base 7, and the transformer raising seat support base 7 supports the lower cylinder 22 through the transformer raising seat support 1 13 and the transformer raising seat support 2 14.

[0028] The transformer lift support base 7 is surrounded by an oil pool 19. The transformer oil released by the transformer lift body 6 flows down through the inner side of the transformer lift explosion-proof protective plate 8 and is drained into the oil pool 19 at the bottom of the transformer.

[0029] In the embodiment, four transformer riser protection hooks 15 are evenly distributed on the outer circumference of the lower cylinder 21 .

[0030] There are two transformer elevating base explosion-proof protective plate brackets 9, and the two sides of the transformer elevating base explosion-proof protective plate 8 are respectively connected to the transformer cooling system support 11 through the transformer elevating base explosion-proof protective plate brackets 9; the transformer elevating base explosion-proof protective plate brackets 9 and the transformer cooling system support 11 on both sides are connected together through connecting bolts 10.

[0031] The lower part of the transformer elevation seat explosion-proof protective plate 8 is connected to the transformer elevation seat support base 7 through the protective plate connecting bolts 12.

[0032] The transformer raising seat protection hook 15 is connected to the transformer raising seat body 6 by welding.

[0033] Working process of this utility model:

[0034] First, by applying pressure inside the transformer riser body 6, when the strength of the transformer riser pressure release plate 16 reaches 90% of its tensile strength, the simulation calculates the weld thickness of the transformer riser pressure release plate weld 1 17 and the transformer riser pressure release plate weld 2 18 that can be broken;

[0035] Complete the welding of the transformer lift seat pressure release plate weld 17 and the transformer lift seat pressure release plate weld 2 18 according to the welding thickness calculated by simulation;

[0036] When the pressure inside the transformer riser body 6 increases to the breaking pressure of the transformer riser pressure release plate weld 17 and the transformer riser pressure release plate weld 2 18, the transformer riser pressure release plate 16 falls and stays on the transformer riser protection hook 15; the transformer oil in the transformer riser body 6 flows out through the original installation position of the transformer riser pressure release plate 16, thereby achieving the purpose of pressure release and explosion protection.

[0037] After the transformer oil flows out through the original installation position of the transformer riser pressure release plate 16, the transformer riser explosion-proof protective plate 8 drains the transformer oil into the oil pool 19 where the transformer is located to prevent personal injury.

[0038] In this embodiment, the pressure increase inside the transformer riser caused by the arc caused by lightning strike or short circuit will be reduced through the explosion-proof structure of the transformer riser, thereby reducing the loss caused by the explosion and protecting the safety of the workers.

Claims

1. A transformer riser explosion-proof structure, characterized by: The utility model comprises a transformer elevating seat assembly (1), a transformer oil storage cabinet (2), a transformer oil tank (3), a transformer cooling system (4) and a transformer bushing (5); the transformer oil storage cabinet (2), the transformer cooling system (4) and the transformer elevating seat assembly (1) are arranged on the transformer oil tank (3); the transformer bushing (5) is arranged on the transformer elevating seat assembly (1); the transformer elevating seat assembly (1) comprises a transformer elevating seat explosion-proof protective plate (8), a transformer elevating seat body (6), a transformer elevating seat explosion-proof protective plate bracket (9), a transformer elevating seat pressure release plate ( 16) and the transformer lifting seat support base (7), the transformer lifting seat body (6) is a cylindrical structure, consisting of an upper cylinder (20), a middle cylinder (21) and a lower cylinder (22), the diameter of the middle cylinder (21) is larger than the diameter of the lower cylinder (22), the middle cylinder (21) and the lower cylinder (22) are welded together by a ring-shaped transformer lifting seat pressure release plate (16), the inner ring of the transformer lifting seat pressure release plate (16) is connected to the top of the lower cylinder (22) through the transformer lifting seat pressure release plate weld seam 2 (18), the transformer lifting seat pressure release plate (16) The outer ring is connected to the bottom of the middle cylinder (21) through a transformer riser pressure release plate weld (17); an arc-shaped transformer riser explosion-proof protective plate (8) is provided on the outside of the lower cylinder (22), which completely covers the middle cylinder (21) and the transformer riser pressure release plate (16); the transformer riser explosion-proof protective plate (8) is fixed to the transformer cooling system support (11) of the transformer cooling system (4) through a transformer riser explosion-proof protective plate bracket (9).

2. The explosion-proof structure of a transformer riser according to claim 1, characterized in that: The lower cylinder (22) is provided with a transformer elevating seat protection hook (15), and the transformer elevating seat protection hook (15) is located below the transformer elevating seat pressure release plate (16); the number of the transformer elevating seat protection hooks (15) is multiple and evenly distributed on the outer circumference of the lower cylinder (22).

3. The explosion-proof structure of a transformer riser according to claim 1 or 2, characterized in that: The bottom of the lower cylinder (22) is arranged on the transformer elevating seat support base (7), and the transformer elevating seat support base (7) supports the lower cylinder (22) through the transformer elevating seat support 1 (13) and the transformer elevating seat support 2 (14).

4. The explosion-proof structure of a transformer riser according to claim 2, characterized in that: The transformer elevating seat protection hook (15) is connected to the transformer elevating seat body (6) by welding.

5. The explosion-proof structure of a transformer riser according to claim 1 or 2, characterized in that: The lower part of the transformer elevating seat explosion-proof protective plate (8) is connected to the transformer elevating seat support base (7) through the protective plate connecting bolts (12).

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