Modular transformer oil-gas bushing protective cover

Abstract

A modular transformer oil-gas sleeve protective cover comprises a sulfur hexafluoride oil-gas sleeve, a sulfur hexafluoride gas side mounting flange and a transformer side mounting flange are arranged on the sulfur hexafluoride oil-gas sleeve, the sulfur hexafluoride gas side mounting flange is connected with a sulfur hexafluoride side head end sleeve, and the transformer side mounting flange is connected with a transformer side head end sleeve. The sulfur hexafluoride side head end sleeve is connected with the sulfur hexafluoride side end part sleeve; the transformer side mounting flange is connected with the transformer side head end sleeve, the transformer side head end sleeve is connected with the transformer side middle sleeve, and the transformer side middle sleeve is connected with the transformer side end part sleeve. The technical problem to be solved by the utility model is to provide the modular transformer oil-gas bushing protective cover, the installation difficulty and the operation risk of the oil-gas bushing protective cover are reduced, the bushing is prevented from being affected with damp, and meanwhile, the due universality and the disassembly and assembly convenience of the protective cover are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer maintenance, in particular to a modular transformer oil and gas bushing protective cover. Background Art

[0002] As an important substation equipment in power plants, transformers are responsible for voltage conversion and power transmission. Their operating status will directly affect the safe and stable operation of power plants. Once a transformer has an accident, the direct and indirect economic losses are difficult to estimate. Therefore, transformers need to be regularly inspected and maintained to ensure safe, reliable and stable operation of transformers.

[0003] As an important part of the transformer, the SF6 oil and gas bushing must be replaced when there are defects in the bushing during transformer overhaul, which inevitably involves the transportation and storage of the bushing. During the removal and transportation of the oil and gas bushing, in order to prevent the epoxy resin on the surface of the bushing from being damaged, the traditional solution uses a bulky, non-elastic and vibration-damping integral steel barrel cover for protection. This is not only difficult to install, but also has the risk of damaging the bushing. The sealing is also poor, and the bushing cannot be filled with dry air to store it. It is acceptable for short-term transportation, but long-term storage cannot prevent the bushing from getting damp. In addition, since the length of the protective cover cannot be adjusted, it cannot adapt to bushings of different lengths and lacks versatility. Therefore, it is necessary to design a modular bushing protective cover with a shock-absorbing protective layer that can prevent the bushing from getting damp, good versatility, and convenient disassembly and assembly. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a modular transformer oil and gas bushing protective cover, which reduces the installation difficulty and operation risk of the oil and gas bushing protective cover and prevents the bushing from getting damp, while achieving the universality and convenience of disassembly and assembly of the protective cover.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a modular transformer oil and gas bushing protective cover, including a sulfur hexafluoride oil and gas bushing, on which a sulfur hexafluoride gas side mounting flange and a transformer side mounting flange are arranged, the sulfur hexafluoride gas side mounting flange is connected to the sulfur hexafluoride side head end bushing, and the sulfur hexafluoride side head end bushing is connected to the sulfur hexafluoride side end bushing;

[0006] The transformer side mounting flange is connected to the transformer side head end bushing, the transformer side head end bushing is connected to the transformer side middle bushing, and the transformer side middle bushing is connected to the transformer side end bushing.

[0007] Preferably, the sleeves are connected by flange connection.

[0008] Preferably, a rubber sealing ring is provided between the flange connection structures.

[0009] Preferably, the end sleeve on the sulfur hexafluoride side and the end sleeve on the transformer side are provided with an inflation nozzle.

[0010] Preferably, the inner side of each sleeve is provided with a rubber protective layer or a sponge protective layer.

[0011] The utility model provides a modular transformer oil and gas bushing protective cover, which has the following beneficial effects:

[0012] 1. The protective cover can be disassembled and assembled in stages, which fully reduces the difficulty of installation and realizes the convenience of disassembly and assembly. No other equipment is required for installation, and two people can complete the installation of the protective cover;

[0013] 2. A rubber or sponge vibration-damping protective layer is provided inside the protective cover to prevent the casing from being damaged due to collision. The connecting flange is provided with corresponding seals and can be inflated and stored to prevent the entry of water and moisture. An inflation nozzle is provided on the last section of the protective cover to inflate and store the casing, effectively preventing the casing from getting damp.

[0014] 3. The protective cover is adjustable in length and easy to assemble and disassemble. It is universal, novel, innovative and practical. It can be widely used in the protection of all oil and gas casings. It can also be used for porcelain insulation protection of the lower section of oil-immersed capacitor casings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 It is a structural schematic diagram of the prior art;

[0017] Figure 2 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0018] A modular transformer oil and gas bushing protective cover, such as Figure 1 As shown, it includes a sulfur hexafluoride oil and gas casing 1, on which a sulfur hexafluoride gas side mounting flange 2 and a transformer side mounting flange 3 are provided. Figure 2 As shown, the sulfur hexafluoride gas side mounting flange 2 is connected to the sulfur hexafluoride side head end sleeve 4, and the sulfur hexafluoride side head end sleeve 4 is connected to the sulfur hexafluoride side end sleeve 5;

[0019] The transformer-side mounting flange 3 is connected to the transformer-side head-end bushing 6 , the transformer-side head-end bushing 6 is connected to the transformer-side middle bushing 7 , and the transformer-side middle bushing 7 is connected to the transformer-side end bushing 8 .

[0020] Preferably, the sleeves are connected by flange connection.

[0021] Preferably, a rubber sealing ring is provided between the flange connection structures.

[0022] Preferably, the sulfur hexafluoride side end bushing 5 and the transformer side end bushing 8 are provided with an inflation nozzle 9 .

[0023] Preferably, the inner side of each sleeve is provided with a rubber protective layer or a sponge protective layer.

[0024] The middle casing of this device can be selected as 0, 1, 2, etc. according to the situation, and the outer dimensions of the protective cover are minimized to minimize the weight and installation difficulty of the protective cover. The screw holes of the mounting flange are zonal holes to ensure the versatility of the protective cover; the protective cover is made of lightweight materials such as aluminum alloy to achieve product lightweight, ensuring that two people can complete the installation of the protective cover without the help of other equipment; the protective cover is embedded with a rubber or sponge vibration-damping protective layer to prevent the casing from being damaged by collision, and the corresponding "O" type sealing ring is set on the connecting flange to prevent water and moisture from entering, and an inflation nozzle is set on the last section of the protective cover to inflate and preserve the casing to prevent the casing from getting damp.

[0025] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A modular transformer oil and gas bushing protective cover, comprising a sulfur hexafluoride oil and gas bushing (1), a sulfur hexafluoride gas side mounting flange (2) and a transformer side mounting flange (3) being provided on the sulfur hexafluoride oil and gas bushing (1), characterized in that: The sulfur hexafluoride gas side mounting flange (2) is connected to the sulfur hexafluoride side head end sleeve (4), and the sulfur hexafluoride side head end sleeve (4) is connected to the sulfur hexafluoride side end sleeve (5); The transformer-side mounting flange (3) is connected to the transformer-side head-end bushing (6), the transformer-side head-end bushing (6) is connected to the transformer-side middle bushing (7), and the transformer-side middle bushing (7) is connected to the transformer-side end bushing (8).

2. According to claim 1, a modular transformer oil and gas bushing protective cover is characterized in that: The connection of each casing is made by flange connection.

3. According to claim 2, a modular transformer oil and gas bushing protective cover is characterized in that: A rubber sealing ring is provided between the flange connection structures.

4. A modular transformer oil and gas bushing protective cover according to any one of claims 1 to 3, characterized in that: The sulfur hexafluoride side end sleeve (5) and the transformer side end sleeve (8) are provided with an inflation nozzle (9).

5. According to claim 1, a modular transformer oil and gas bushing protective cover is characterized in that: The inner side of each sleeve is provided with a rubber protective layer or a sponge protective layer.

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