Transformer riser explosion-proof structure and method

Abstract

The present application relates to a kind of transformer elevated seat explosion-proof structure and method, belong to transformer manufacturing technical field.The technical scheme is: middle cylinder (21) and lower cylinder (22) are connected by annular transformer elevated seat pressure release plate (16) welding connection, the inner ring of transformer elevated seat pressure release plate (16) is connected with lower cylinder (22) top by transformer elevated seat pressure release plate weld seam two (18), the outer ring of transformer elevated seat pressure release plate (16) is connected with middle cylinder (21) bottom by transformer elevated seat pressure release plate weld seam one (17);The outside of lower cylinder (22) is equipped with circular-arc transformer elevated seat explosion-proof guard plate (8), and middle cylinder (21) and transformer elevated seat pressure release plate are all covered.The beneficial effects of the present application are: explosion of transformer elevated seat due to lightning and short circuit etc. can be greatly reduced, thereby reducing the loss caused by explosion, protect the safety of staff.

Description

TECHNICAL FIELD

[0001] The present application relates to a transformer riser anti-explosion structure and method, belonging to the technical field of transformer manufacturing. BACKGROUND

[0002] The power transformer is one of the most complex and core electrical equipment in the power system structure. With the increase of voltage level and transformer capacity, the lightning overvoltage of the transformer will cause the explosion of the transformer riser. Although the probability of explosion is not particularly large, in order to prevent a series of unnecessary losses caused by explosion, protective measures need to be taken to solve this problem. SUMMARY

[0003] The present application aims to provide a transformer riser anti-explosion structure and method, which reduces the explosion of the transformer riser caused by lightning and short circuit, thereby reducing the loss caused by explosion and protecting the safety of workers, so as to effectively reduce the explosion problem of the transformer riser.

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

[0005] A transformer riser anti-explosion structure, comprising 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 the transformer oil conservator, the transformer cooling system and the transformer riser assembly, and the transformer bushing is arranged on the transformer riser assembly; the transformer riser assembly comprises a transformer riser anti-explosion protection plate, a transformer riser body, a transformer riser anti-explosion protection plate support, a transformer riser pressure release plate and a transformer riser support base, the transformer riser body is a cylindrical structure composed of an upper cylinder, a middle cylinder and a lower cylinder, the diameter of the middle cylinder is greater than that of the lower cylinder, the middle cylinder and the lower cylinder are connected by the annular transformer riser pressure release plate, the inner ring of the transformer riser pressure release plate is connected with the top of the lower cylinder through the second transformer riser pressure release plate weld, and the outer ring of the transformer riser pressure release plate is connected with the bottom of the middle cylinder through the first transformer riser pressure release plate weld; the outer surface of the lower cylinder is provided with a circular-arc-shaped transformer riser anti-explosion protection plate, which covers the middle cylinder and the transformer riser pressure release plate; and the transformer riser anti-explosion protection plate is fixed on the transformer cooling system support of the transformer cooling system through the transformer riser anti-explosion protection plate support.

[0006] The lower cylinder is provided with transformer lifting seat protection hooks below the transformer lifting seat pressure release plate; the transformer lifting seat protection hooks are evenly distributed on the outer circumference of the lower cylinder; when the transformer lifting seat pressure release plate falls off, it stays on the transformer lifting seat protection hooks to prevent falling to the ground. The transformer oil in the transformer lifting seat body flows out from the original installation position of the transformer lifting seat pressure release plate, thereby achieving the purpose of pressure release and explosion prevention.

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

[0008] The bottom of the lower cylinder is arranged on the transformer lifting seat support base; the transformer lifting seat support base supports the lower cylinder through the transformer lifting seat support one and the transformer lifting seat support two.

[0009] The surrounding of the transformer lifting seat support base is an oil pool; the transformer oil released by the transformer lifting seat body flows down through the inner side of the transformer lifting seat explosion-proof guard plate and is introduced into the oil pool at the bottom of the transformer.

[0010] The number of transformer lifting seat explosion-proof guard plate supports is two; the two sides of the transformer lifting seat explosion-proof guard plate are connected together through the transformer lifting seat explosion-proof guard plate supports and the transformer cooling system support; the transformer lifting seat explosion-proof guard plate supports on the two sides are connected together through the connecting bolts.

[0011] The lower part of the transformer lifting seat explosion-proof guard plate is connected together with the transformer lifting seat support base through the guard plate connecting bolts.

[0012] A transformer lifting seat explosion-proof method adopts the above explosion-proof structure and comprises the following steps.

[0013] First, the strength of the transformer lifting seat pressure release plate reaches 90% of its tensile strength by applying pressure inside the transformer lifting seat body; the weld thickness at which the transformer lifting seat pressure release plate weld one and the transformer lifting seat pressure release plate weld two can be broken is simulated and calculated;

[0014] The welding of the transformer lifting seat pressure release plate weld one and the transformer lifting seat pressure release plate weld two is completed according to the simulated and calculated weld thickness;

[0015] When the pressure in the transformer riser body increases to the breaking pressure of the transformer riser pressure release plate weld 1 and the transformer riser pressure release plate weld 2, the transformer riser pressure release plate falls and stays on the transformer riser protection hook; the transformer oil in the transformer riser body flows out through the original installation position of the transformer riser pressure release plate, thereby achieving the purpose of pressure release and explosion protection.

[0016] After the transformer oil flows out through the original installation position of the transformer riser pressure release plate, the transformer riser explosion-proof protective plate drains the transformer oil into the oil pool where the transformer is located to prevent personal injury.

[0017] The beneficial effects of the present invention are that the explosion of the transformer riser caused by lightning, short circuit, etc. can be greatly reduced, thereby reducing the losses caused by the explosion and protecting the safety of the workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of an embodiment of the present invention installed on a transformer;

[0019] Figure 2 This is a front view of an embodiment of the present invention installed on a transformer;

[0020] Figure 3 Schematic diagram of the explosion-proof protective plate bracket of the transformer riser according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the bottom of the transformer riser body according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of an embodiment of the present invention with the bottom of the explosion-proof protective plate of the transformer riser removed;

[0023] Figure 6 This is a front view of an embodiment of the present invention without the explosion-proof protective plate on the transformer riser;

[0024] Figure 7 This is a side view of an embodiment of the present invention without the explosion-proof protective plate of the transformer riser;

[0025] Figure 8 Schematic diagram of the structure between the cylinder and the lower cylinder in an embodiment of the present invention;

[0026] 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 guard 8, transformer riser explosion-proof guard bracket 9, connecting bolt 10, transformer cooling system support 11, guard connecting bolt 12, transformer riser support 1 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

[0027] The application is further described below by examples in conjunction with the accompanying drawings.

[0028] A transformer riser explosion-proof structure, comprising a transformer riser 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 the transformer oil conservator 2, the transformer cooling system 4 and the transformer riser assembly 1, and the transformer bushing 5 is arranged on the transformer riser assembly 1; the transformer riser assembly 1 comprises a transformer riser explosion-proof guard 8, a transformer riser body 6, a transformer riser explosion-proof guard bracket 9, a transformer riser pressure release plate 16 and a transformer riser support base 7, the transformer riser body 6 is a cylindrical structure composed of an upper cylinder 20, a middle cylinder 21 and a lower cylinder 22, the diameter of the middle cylinder 21 is greater than that of the lower cylinder 22, the middle cylinder 21 and the lower cylinder 22 are connected by an annular transformer riser pressure release plate 16, the inner ring of the transformer riser pressure release plate 16 is connected to the top of the lower cylinder 22 through a transformer riser pressure release plate weld 2 18, and the outer ring of the transformer riser pressure release plate 16 is connected to the bottom of the middle cylinder 21 through a transformer riser pressure release plate weld 1 17; the outer surface of the lower cylinder 22 is provided with a circular-arc-shaped transformer riser explosion-proof guard 8, which covers the middle cylinder 21 and the transformer riser pressure release plate 16; the transformer riser explosion-proof guard 8 is fixed on the transformer cooling system support 11 of the transformer cooling system 4 through the transformer riser explosion-proof guard bracket 9.

[0029] The lower cylinder 22 is provided with transformer lifting seat protection hooks 15 located below the transformer lifting seat pressure release plate 16. The transformer lifting seat protection hooks 15 are evenly distributed on the outer circumference of the lower cylinder 22. When the transformer lifting seat pressure release plate 16 falls off, it stays on the transformer lifting seat protection hooks 15 to prevent falling to the ground. The transformer oil in the transformer lifting seat body 6 flows out through the original installation position of the transformer lifting seat pressure release plate 16, thereby achieving the purpose of pressure release and explosion prevention.

[0030] The transformer lifting seat explosion-proof guard plate 8 is a semicircular structure arranged below the middle cylinder 21. The diameter of the transformer lifting seat explosion-proof guard plate 8 is the same as that of the middle cylinder 21.

[0031] The bottom of the lower cylinder 22 is arranged on the transformer lifting seat support base 7. The transformer lifting seat support base 7 supports the lower cylinder 22 through the transformer lifting seat support one 13 and the transformer lifting seat support two 14.

[0032] The surrounding of the transformer lifting seat support base 7 is an oil pool 19. The transformer oil released by the transformer lifting seat body 6 flows down through the inner side of the transformer lifting seat explosion-proof guard plate 8 and is introduced into the oil pool 19 at the bottom of the transformer.

[0033] In the embodiment, four transformer lifting seat protection hooks 15 are evenly distributed on the outer circumference of the lower cylinder 21.

[0034] The transformer lifting seat explosion-proof guard plate support 9 is two in number. The transformer lifting seat explosion-proof guard plate 8 is connected together through the transformer lifting seat explosion-proof guard plate support 9 on both sides and the transformer cooling system support 11. The transformer lifting seat explosion-proof guard plate support 9 on both sides and the transformer cooling system support 11 are connected together through the connecting bolt 10.

[0035] The lower part of the transformer lifting seat explosion-proof guard plate 8 is connected together with the transformer lifting seat support base 7 through the guard plate connecting bolt 12.

[0036] The transformer lifting seat protection hooks 15 are connected together with the transformer lifting seat body 6 through welding.

[0037] A transformer lifting seat explosion-proof method adopts the above explosion-proof structure and includes the following steps.

[0038] First, by applying pressure inside the transformer lifting seat body 6, when the strength of the transformer lifting seat pressure release plate 16 reaches 90% of its tensile strength, the simulation calculates the breakable welding thickness of the transformer lifting seat pressure release plate weld one 17 and the transformer lifting seat pressure release plate weld two 18.

[0039] The welding of the transformer lifting seat pressure release plate weld one 17 and the transformer lifting seat pressure release plate weld two 18 is completed according to the welding thickness calculated by simulation;

[0040] When the pressure in the transformer lifting seat body 6 increases to the breaking pressure of the transformer lifting seat pressure release plate weld one 17 and the transformer lifting seat pressure release plate weld two 18, the transformer lifting seat pressure release plate 16 falls and stays on the transformer lifting seat protection hook 15; the transformer oil in the transformer lifting seat body 6 flows out through the original installation position of the transformer lifting seat pressure release plate 16, thereby achieving the purpose of releasing pressure and explosion-proof.

[0041] After the transformer oil flows out through the original installation position of the transformer lifting seat pressure release plate 16, the transformer lifting seat explosion-proof protection plate 8 guides the transformer oil to the oil pool 19 where the transformer is located, preventing personnel from being injured.

[0042] In this embodiment, the pressure increase caused by the electric arc in the transformer lifting seat due to lightning strike or short circuit is reduced by the transformer lifting seat explosion-proof structure, thereby reducing the loss caused by explosion and protecting the safety of 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 lifting seat pressure release plate weld (17); the outer side of the lower cylinder (22) is provided with an arc-shaped transformer lifting seat explosion-proof protective plate (8) to completely cover the middle cylinder (21) and the transformer lifting seat pressure release plate (16); the transformer lifting seat explosion-proof protective plate (8) is fixed to the transformer cooling system support (11) of the transformer cooling system (4) through the transformer lifting seat explosion-proof protective plate bracket (9); the lower cylinder (22) is provided with a transformer lifting seat protection hook (1 5), the transformer elevating seat protection hook (15) is located below the transformer elevating seat pressure release plate (16); the transformer elevating seat protection hooks (15) are multiple in number and are evenly distributed on the outer circumference of the lower cylinder (22); when the transformer elevating seat pressure release plate (16) falls off, it stays on the transformer elevating seat protection hook (15) to prevent it from falling to the ground; the transformer elevating seat explosion-proof protective plate (8) is a semicircular structure and is arranged below the middle cylinder (21); the diameter of the transformer elevating seat explosion-proof protective plate (8) is the same as the diameter of the middle cylinder (21).

2. The explosion-proof structure of a transformer riser according to claim 1, 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).

3. The explosion-proof structure of a transformer riser according to claim 1, characterized in that: The transformer elevating seat support base (7) is surrounded by an oil pool (19). The transformer oil released by the transformer elevating seat body (6) flows down through the inner side of the transformer elevating seat explosion-proof protective plate (8) and is drained into the oil pool (19) at the bottom of the transformer.

4. The explosion-proof structure of a transformer riser according to claim 1, characterized in that: The number of the transformer elevating seat explosion-proof protective plate brackets (9) is two, and both sides of the transformer elevating seat explosion-proof protective plate (8) are connected to the transformer cooling system support (11) through the transformer elevating seat explosion-proof protective plate brackets (9); the transformer elevating seat explosion-proof protective plate brackets (9) and the transformer cooling system support (11) on both sides are connected together through connecting bolts (10).

5. The explosion-proof structure of a transformer riser according to claim 1, 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).

6. A method for explosion-proofing a transformer riser, using the explosion-proof structure of a transformer riser according to any one of claims 1 to 5, characterized in that The following steps are included: 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 thickness of the transformer riser pressure release plate weld seam 1 (17) and the transformer riser pressure release plate weld seam 2 (18) that can be broken is calculated by simulation; Complete the welding of the transformer lift seat pressure release plate weld seam 1 (17) and the transformer lift seat pressure release plate weld seam 2 (18) according to the welding thickness calculated by simulation; When the pressure in the transformer riser body (6) increases to the breaking pressure of the transformer riser pressure release plate weld seam 1 (17) and the transformer riser pressure release plate weld seam 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.

7. The explosion-proof method for transformer lifting stand according to claim 6, characterized in that: After the transformer oil flows out through the original installation position of the transformer lifting seat pressure release plate (16), the transformer lifting seat explosion-proof protection plate (8) guides the transformer oil into the oil pool (19) where the transformer is located.

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