Transformer ascending flanged base explosion-proof structure and method

Abstract

The invention relates to a transformer ascending flanged base explosion-proof structure and method, 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 invention relates to an explosion-proof structure and method for a transformer lifting 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 the power system. With the increase of voltage level and transformer capacity, lightning overvoltage of transformers can cause explosion of transformer risers. Although the probability of explosion is not particularly high, in order to prevent a series of unnecessary losses caused by explosion, protective measures need to be taken to deal with this problem. Summary of the invention

[0003] The purpose of the present invention is to provide an explosion-proof structure and method for a transformer riser, so as to reduce explosions caused by lightning and short circuits on the transformer riser, thereby reducing losses caused by explosions, protecting the safety of workers, and effectively reducing the explosion problem of the transformer riser.

[0004] The technical solution of the present invention is: A transformer lifting seat explosion-proof structure, comprising a transformer lifting seat assembly, a transformer oil storage cabinet, a transformer oil tank, a transformer cooling system and a transformer bushing, wherein the transformer oil storage cabinet, the transformer cooling system and the transformer lifting seat assembly are arranged on the transformer oil tank, and the transformer bushing is arranged on the transformer lifting seat assembly; the transformer lifting seat assembly comprises a transformer lifting seat explosion-proof protective plate, a transformer lifting seat body, a transformer lifting seat explosion-proof protective plate bracket, a transformer lifting seat pressure release plate and a transformer lifting seat support base, the transformer lifting seat body is a cylindrical structure, consisting of an upper cylinder, a middle cylinder and a lower cylinder, and 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 and connected by a ring-shaped transformer riser pressure release plate, the inner ring of the transformer riser pressure release plate is connected to the top of the lower cylinder through the transformer riser pressure release plate weld 2, and the outer ring of the transformer riser pressure release plate is connected to the bottom of the middle cylinder through the transformer riser pressure release plate weld 1; an arc-shaped transformer riser explosion-proof protective plate is provided on the outside of the lower cylinder to completely cover the middle cylinder and the transformer riser pressure release plate; the transformer riser explosion-proof protective plate is fixed to the transformer cooling system support of the transformer cooling system through the transformer riser explosion-proof protective plate bracket.

[0005] The lower cylinder is provided with a transformer lifting seat protection hook, which is located below the transformer lifting seat pressure release plate; there are multiple transformer lifting seat protection hooks, which 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 hook to prevent it from falling to the ground. The transformer oil in the transformer lifting seat body flows out through the original installation position of the transformer lifting seat pressure release plate, thereby achieving the purpose of releasing pressure and explosion prevention.

[0006] The explosion-proof protective plate of the transformer elevating seat is a semicircular structure, which is arranged below the middle cylinder. The diameter of the explosion-proof protective plate of the transformer elevating seat is the same as the diameter of the middle cylinder.

[0007] The bottom of the lower cylinder is arranged on the transformer elevating seat support base, and the transformer elevating seat support base supports the lower cylinder through the transformer elevating seat support one and the transformer elevating seat support two.

[0008] The transformer elevating seat support base is surrounded by an oil pool. The transformer oil released by the transformer elevating seat body flows down through the inner side of the transformer elevating seat explosion-proof protective plate, and the transformer oil is drained into the oil pool at the bottom of the transformer.

[0009] There are two transformer elevating base explosion-proof protective plate brackets, and both sides of the transformer elevating base explosion-proof protective plate are connected to the transformer cooling system support through the transformer elevating base explosion-proof protective plate brackets; the transformer elevating base explosion-proof protective plate brackets on both sides are connected to the transformer cooling system support through connecting bolts.

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

[0011] A transformer lifting stand explosion-proof method, using the above-mentioned explosion-proof structure, comprises the following steps: First, by applying pressure inside the transformer riser body, when the strength of the transformer riser pressure release plate reaches 90% of its tensile strength, the simulation calculates the breakable welding thickness of the transformer riser pressure release plate weld 1 and the transformer riser pressure release plate weld 2; Complete the welding of the transformer lift seat pressure release plate weld seam 1 and the transformer lift seat pressure release plate weld seam 2 according to the welding thickness calculated by simulation; When the pressure in the transformer lifting seat body increases to the breaking pressure of the transformer lifting seat pressure release plate weld 1 and the transformer lifting seat pressure release plate weld 2, the transformer lifting seat pressure release plate falls and stays on the transformer lifting seat protection hook; the transformer oil in the transformer lifting seat body flows out through the original installation position of the transformer lifting seat pressure release plate, thereby achieving the purpose of pressure release and explosion protection.

[0012] After the transformer oil flows out through the original installation position of the transformer lifting seat pressure release plate, the transformer lifting seat explosion-proof protective plate drains the transformer oil into the oil pool where the transformer is located to prevent personnel from being injured.

[0013] The beneficial effects of the present invention are: it can greatly reduce the explosion of the transformer lifting base caused by lightning and short circuit, 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 an embodiment of the present invention installed on a transformer; Figure 2 This is a front view schematic diagram of an embodiment of the present invention installed on a transformer; Figure 3 This is a schematic diagram of an explosion-proof protective plate bracket for a transformer elevation seat according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the bottom of the transformer riser body according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the bottom of the explosion-proof protective plate of the transformer lifting seat removed in the example of the present invention; Figure 6 This is a front schematic diagram of an embodiment of the present invention without the explosion-proof protective plate of the transformer elevation seat; Figure 7 This is a side schematic diagram of an embodiment of the present invention without the explosion-proof protective plate of the transformer elevation seat; Figure 8 It is a schematic diagram of the structure between the cylinder and the lower cylinder in an embodiment of the present invention; In the figure: transformer lifting seat assembly 1, transformer oil storage cabinet 2, transformer oil tank 3, transformer cooling system 4, transformer bushing 5, transformer lifting seat body 6, transformer lifting seat support base 7, transformer lifting seat explosion-proof protective plate 8, transformer lifting seat explosion-proof protective plate bracket 9, connecting bolts 10, transformer cooling system support 11, protective plate connecting bolts 12, transformer lifting seat support 1 13, transformer lifting seat support 2 14, transformer lifting seat protection hook 15, transformer lifting seat pressure release plate 16, transformer lifting seat pressure release plate weld 1 17, transformer lifting seat pressure release plate weld 2 18, oil pool 19, upper cylinder 20, middle cylinder 21, lower cylinder 22. DETAILED DESCRIPTION

[0015] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0016] A transformer lifting seat explosion-proof structure, comprising a transformer lifting seat assembly 1, a transformer oil storage cabinet 2, a transformer oil tank 3, a transformer cooling system 4 and a transformer bushing 5, wherein the transformer oil storage cabinet 2, the transformer cooling system 4 and the transformer lifting seat assembly 1 are arranged on the transformer oil tank 3, and the transformer bushing 5 is arranged on the transformer lifting seat assembly 1; the transformer lifting seat assembly 1 comprises a transformer lifting seat explosion-proof protective plate 8, a transformer lifting seat body 6, a transformer lifting seat explosion-proof protective plate bracket 9, a transformer lifting seat pressure release plate 16 and a transformer lifting seat support base 7, the transformer lifting seat body 6 is a cylindrical structure, and is composed of an upper cylinder 20, a middle cylinder 21 and a lower cylinder 22, and the diameter of the middle cylinder 21 is larger than that of the lower cylinder 2 2, the middle cylinder 21 and the lower cylinder 22 are welded and connected 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 2 18, and the outer ring of the transformer lifting seat pressure release plate 16 is connected to the bottom of the middle cylinder 21 through the 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, which completely covers 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.

[0017] The lower cylinder 22 is provided with a transformer elevating seat protection hook 15, which is located below the transformer elevating seat pressure release plate 16; there are multiple transformer elevating seat protection hooks 15, which 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 oil in the transformer elevating seat body 6 flows out through the original installation position of the transformer elevating seat pressure release plate 16, thereby achieving the purpose of releasing pressure and explosion-proof.

[0018] The explosion-proof protective plate 8 of the transformer elevation seat is a semicircular structure and is arranged below the middle cylinder 21 . The diameter of the explosion-proof protective plate 8 of the transformer elevation seat is the same as the diameter of the middle cylinder 21 .

[0019] 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.

[0020] 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.

[0021] In the embodiment, four transformer elevation seat protection hooks 15 are evenly distributed on the outer circumference of the lower cylinder 21 .

[0022] There are two transformer elevating base explosion-proof protective plate brackets 9, and both sides of the transformer elevating base explosion-proof protective plate 8 are 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 on both sides are connected to the transformer cooling system support 11 through connecting bolts 10.

[0023] The lower part of the explosion-proof protective plate 8 of the transformer elevating seat is connected to the supporting base 7 of the transformer elevating seat through the protective plate connecting bolts 12.

[0024] The transformer elevating seat protection hook 15 is connected to the transformer elevating seat body 6 by welding.

[0025] A transformer lifting stand explosion-proof method, using the above-mentioned explosion-proof structure, comprises the following steps: First, by applying pressure inside the transformer lift base body 6, when the strength of the transformer lift base pressure release plate 16 reaches 90% of its tensile strength, the simulation calculates the weld thickness of the transformer lift base pressure release plate weld 1 17 and the transformer lift base pressure release plate weld 2 18 that can be broken; Complete the welding of the transformer lift seat pressure release plate weld 1 17 and the transformer lift seat pressure release plate weld 2 18 according to the welding thickness calculated by simulation; When the pressure in the transformer lifting seat body 6 increases to the breaking pressure of the transformer lifting seat pressure release plate weld 17 and the transformer lifting seat pressure release plate weld 2 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 pressure release and explosion prevention.

[0026] 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 drains the transformer oil into the oil pool 19 where the transformer is located to prevent personal injury.

[0027] In this embodiment, the pressure increase inside the transformer riser caused by an 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 lifting base explosion-proof structure, characterized in that: The invention 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 tank (3) is provided with the transformer oil storage cabinet (2), the transformer cooling system (4) and the transformer elevating seat assembly (1); 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 (11) and a transformer elevating seat explosion-proof protective plate bracket (12); and a transformer elevating seat explosion-proof protective plate bracket (13). 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 the diameter of the lower cylinder (22), the middle cylinder (21) and the lower cylinder (22) are welded and connected by a ring-shaped transformer elevating seat pressure release plate (16), the inner ring of the transformer elevating seat pressure release plate (16) is connected to the top of the lower cylinder (22) through the transformer elevating seat pressure release plate weld 2 (18), and the transformer elevating 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); an arc-shaped transformer lifting seat explosion-proof protection plate (8) is provided on the outside of the lower cylinder (22) to completely cover the middle cylinder (21) and the transformer lifting seat pressure release plate (16); the transformer lifting seat explosion-proof protection plate (8) is fixed to the transformer cooling system support (11) of the transformer cooling system (4) through a transformer lifting seat explosion-proof protection plate bracket (9).

2. The explosion-proof structure of a transformer lifting stand according to claim 1 is characterized in that: The lower cylinder (22) is provided with a transformer lifting seat protection hook (15), and the transformer lifting seat protection hook (15) is located below the transformer lifting seat pressure release plate (16); the transformer lifting seat protection hook (15) is in multiple numbers and is 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 hook (15) to prevent it from falling to the ground.

3. The explosion-proof structure of a transformer lifting stand according to claim 1 or 2, characterized in that: The transformer elevating seat explosion-proof protection plate (8) is a semicircular structure and is arranged below the middle cylinder (21). The diameter of the transformer elevating seat explosion-proof protection plate (8) is the same as the diameter of the middle cylinder (21).

4. The explosion-proof structure of a transformer lifting stand 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).

5. The explosion-proof structure of a transformer lifting stand according to claim 1 or 2, characterized in that: The transformer elevating seat support base (7) is surrounded by an oil pool (19), and 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 the transformer oil is drained into the oil pool (19) at the bottom of the transformer.

6. The explosion-proof structure of a transformer lifting stand according to claim 1 or 2, characterized in that: The number of the transformer elevating base explosion-proof protection plate brackets (9) is two, and the two sides of the transformer elevating base explosion-proof protection plate (8) are connected to the transformer cooling system support (11) through the transformer elevating base explosion-proof protection plate brackets (9) respectively; the transformer elevating base explosion-proof protection plate brackets (9) and the transformer cooling system support (11) on both sides are connected together through connecting bolts (10).

7. The explosion-proof structure of a transformer lifting stand 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 supporting base (7) via protective plate connecting bolts (12).

8. A method for explosion-proofing a transformer elevating seat, using an explosion-proof structure for a transformer elevating seat as claimed in any one of claims 1 to 7, characterized in that The following steps are included: First, by applying pressure inside the transformer lift base body (6), when the strength of the transformer lift base pressure release plate (16) reaches 90% of its tensile strength, simulation is performed to calculate the breakable welding thickness of the transformer lift base pressure release plate weld seam 1 (17) and the transformer lift base pressure release plate weld seam 2 (18); Complete the welding of the transformer lift base pressure release plate weld seam 1 (17) and the transformer lift base pressure release plate weld seam 2 (18) according to the welding thickness calculated by simulation; When the pressure in the transformer lift base body (6) increases to the breaking pressure of the transformer lift base pressure release plate weld seam 1 (17) and the transformer lift base pressure release plate weld seam 2 (18), the transformer lift base pressure release plate (16) falls off and stays on the transformer lift base protection hook (15); the transformer oil in the transformer lift base body (6) flows out through the original installation position of the transformer lift base pressure release plate (16), thereby achieving the purpose of pressure release and explosion prevention.

9. The explosion-proof method for transformer lifting stand according to claim 8, 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 to the oil pool (19) where the transformer is located.

Images