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High-capacity forced-oil circulation air cooler

A technology of strong oil circulation and air cooler, which is applied in the direction of transformer/inductor cooling, transformer/inductor parts, electrical components, etc., which can solve the problem of large number of finned tubes with large wind resistance and increase the loss of cooler auxiliary equipment , The long size of the cooler body and other issues, to achieve the effect of increasing the heat dissipation coefficient K value, improving efficiency and performance, and reducing wind resistance

Inactive Publication Date: 2016-07-27
SHENYANG TIANTONG ELECTRICITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. There is contact resistance between the finned tube and the base tube, the number of finned tubes with large wind resistance is large, the size of the cooler body is too long, and the insulation distance from the outside of the bushing exceeds the standard
[0004] 2. The single metal tube sheet structure is easy to leak due to the expansion joint process
[0005] 3. The efficiency of the asynchronous motor is low, which increases the loss of auxiliary coolers

Method used

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  • High-capacity forced-oil circulation air cooler
  • High-capacity forced-oil circulation air cooler
  • High-capacity forced-oil circulation air cooler

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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] Such as Figure 1-5 As shown, the large-capacity strong oil circulating air cooler includes: upper oil chamber 1, lower oil chamber 2, cooler body 3, air guide tube 4, cooler fan 5, oil pump 6, tube cluster 7, tube cluster 7 is An elliptical bimetal composite integral rolled finned tube cluster, the cooling tube in the tube cluster 7 is an elliptical bimetallic finned tube, including the flat shape of the integral fin 8b automatically controlled by computer on the outer wall of the elliptical base tube 8a Finned tube 8, an inner ribbed tube 9 with straight ribs on the inner wall of another metal provided on the inner wall of the oval base tube 8a, and corrugated cutouts 10 on the outer edge of the fin 8b, the oval bimetallic finned tube The built-in vortex generator 11 can further improve the heat transfer efficiency on the air side of the abo...

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Abstract

The invention discloses a large-capacity strong oil circulation air cooler. The heat transfer core element adopts an elliptical bimetal composite integral finned tube structure, and corrugated notches are opened on the fins of the cooling tubes, and internal ribs are juxtaposed in the tubes. There is a vortex generator, the fan blade of the cooler is molded with high-strength aluminum alloy plate, and the fan motor adopts an optimized combination of three types of motors. The centrifugal force of the fan is loaded into the mainstream, which ensures the laminar flow state, reduces the speed, and forms a cooler with low noise and large capacity. Under the same wind speed and oil flow conditions, the overall heat transfer coefficient K value is higher than that of circular finned tubes of the same specification. Products increased by 30%.

Description

technical field [0001] The invention belongs to a transformer cooling device, and in particular provides a cooling device for a high-voltage or ultra-high-voltage large oil-immersed power transformer of 720MVA-1200MVA / 220KV-500KV, which is a large-capacity strong oil circulation air cooler. Background technique [0002] At present, the strong oil circulating air cooler for transformers is composed of upper oil chamber, lower oil chamber, side plate, tube plate, cooler tube cluster, pressure plate, air guide tube, terminal box, etc. The cooling tubes in the cooling tube cluster are double Metal or single metal finned tube, the fan motor is an asynchronous motor, its disadvantages are: [0003] 1. There is contact resistance between the finned tube and the base tube, the number of finned tubes with large wind resistance is large, the size of the cooler body is too long, and the insulation distance from the outside of the bushing exceeds the standard. [0004] 2. The single me...

Claims

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Application Information

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IPC IPC(8): H01F27/08H01F27/14
CPCH01F27/08H01F27/085H01F27/14
Inventor 朱良骏
Owner SHENYANG TIANTONG ELECTRICITY
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