Heavy-calibre oil collection tube radiator for transformer

Abstract

The invention discloses a heavy-calibre oil collection tube radiator for a transformer, belonging to the technical field of transformer accessories. The heavy-calibre oil collection tube radiator comprises a radiator body comprising an oil collection tube, an oil return tube and a group of cooling fins, wherein the cooling fins are gathered between the oil collection tube and the oil return tube and are matched with the oil collection tube and the oil return tube, and the diameter of the oil collection tube and the diameter of the oil return tube are respectively 114mm. By utilizing the heavy-calibre oil collection tube radiator provided by the invention, heat-conducting oil can fully enter each cooling fin conveniently, the phenomenon of oil lack is avoided, and the radiation effect is improved; the friction force between the heat-conducting oil and a tube wall is reduced, thus the operation heat of the heat-conducting oil is reduced; the diameter of the oil return tube is enlarged to increase the flow of oil, thus the amount of oil passing through the radiator within unit time is increased, and the radiation effect is more ideal; and after the diameter of the oil collection tube is enlarged, the pressure loss of oil is reduced so as to save the oil pump motor power.

Description

technical field [0001] The invention belongs to the technical field of transformer accessories, and in particular relates to a large-diameter oil-collecting pipe radiator for transformers. Background technique [0002] As known in the industry, the oil collector radiator is installed outside the large oil-immersed transformer, and forms a cooling circuit with the heat transfer oil inside the transformer through flange connection to cool the iron core of the transformer to ensure the normal operation of the transformer. [0003] For example, CN201185118Y (radiator of transformer), CN201185115Y (radiator with fan seat), CN201185117Y (fin radiator for transformer) and CN201229827Y of the oil collecting tube radiators for transformers in the prior art are all patented by the applicant. Although (radiating fin stepped radiators) have corresponding technical advantages, there are the following common technical problems: one is due to the constraints of traditional design concepts ...

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Problems solved by technology

[0003] For example, CN201185118Y (radiator of transformer), CN201185115Y (radiator with fan seat), CN201185117Y (fin radiator for transformer) and CN201229827Y of the oil collecting tube radiators for transformers in the prior art are all patented by the applicant. Although (radiating fin stepped radiators) have corresponding technical advantages, there are the following common technical problems: one is due to the constraints of traditional design concepts and design specifications, the design of the maximum diameter of the oil collecting pipe of the radiator It is 89mm (outer diameter), but through repeated experiments by the applicant, it has been found that the heat transfer oil pre-stored in the oil collection pipe is obviously insufficient before the radiator is cooled, so that the heat transfer oil in the oil collection pipe is not enough to fully Into each heat sink, the heat sink will be short of oil. On the other hand, the amount of oil in the oil return pipe is insufficient, and the amount of oil passing through the radiator in a unit time is small, and the heat dissipation effect is not ideal; The inner wall of the oil pipe and the oil return pipe has a large friction force, which leads to a large heat transfer (return) of the heat transfer oil itself; thirdly, the pressure loss of the heat transfer oil is large, which leads to an increase in the power of the oil pump motor, which is not energy-saving

[0004] The applicant believes that the above-mentioned problems are caused by the constraints of the traditional design ideas in the industry. stifles the motivation to innovate and excel

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