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An online processing method and equipment for manufacturing a radiator inner cavity for a high-voltage transformer

The technology of a high-voltage transformer and a treatment method is applied in the directions of transformer/inductor cooling, chemical instruments and methods, separation methods, etc., and can solve the problems of high energy consumption in the production process, long standing and blowing time, and safety hazards of high-voltage transformers. Achieve the effect of improving equipment utilization, standardizing operations, and ensuring workers' health

Active Publication Date: 2019-07-05
SHENYANG TIANTONG ELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the characteristic of the radiator is that there are many channels and narrow gaps through which the cooling oil in the inner cavity flows, and the cross-sectional area of ​​all channels is several times larger than the cross-sectional area of ​​the inlet and outlet. After the liquid enters the inner cavity through the liquid pump, it will pass through the nearest channel or part of the channels When the flow is collected to the outlet, there will be air bubbles or air in the channel that is not filled with liquid, and it is difficult to clean the foreign matter out of the radiator. Although the pressure of the liquid pump is increased to a certain extent, there is still air in most channels and cannot be realized. All channels filled with flushing liquid flow
Therefore, the current process has low efficiency and high energy consumption, which is the bottleneck of production and has not been solved.
Since the low efficiency has become the bottleneck of the production process, so far this production process has not realized online production, and can only implement a step-by-step production method.
[0006] 3. After the inner cavity is flushed and cleaned, it is necessary to pour paint on the inner cavity to prevent the inner cavity from rusting. If rust occurs, rust spots may appear, and the metal slag that peels off the rust spots will fall off the inner cavity, which will endanger the safety of the high-voltage transformer.
[0008] These two processes have obvious disadvantages: under normal pressure, the liquid is baked at a temperature above 150°C, the vaporized liquid remains in the inner cavity of the radiator, and the steel base surface of the inner cavity is cooled after leaving the drying chamber at the baking temperature. In the unprotected state before painting, the surface of the inner cavity steel is prone to oxidation
The disadvantage of this method is: due to the large area of ​​the inner cavity of the radiator, there are many channels and narrow gaps, it takes a long time to stand for blowing, especially for the inner cavity paint to be specially dried at about 100°C for several hours, and the inner cavity The diluent in the paint may not even be discharged, so the painting link is a production bottleneck that consumes energy, emits pollution from exhaust gas, and consumes time
Another defect is: due to the incomplete drying of the inner cavity mentioned in the above 3, tiny air bubbles may remain in the cavity gap far away from the inlet and outlet. This method of injecting paint from the lower port with air pressure only repeatedly fills the bubble problem. Difficult to remove tiny air bubbles
[0011] To sum up, the current radiator production process consumes a lot of energy, the production process is long, the process bottleneck is large, the efficiency is low, and there are many hidden dangers. Automated online production

Method used

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  • An online processing method and equipment for manufacturing a radiator inner cavity for a high-voltage transformer
  • An online processing method and equipment for manufacturing a radiator inner cavity for a high-voltage transformer
  • An online processing method and equipment for manufacturing a radiator inner cavity for a high-voltage transformer

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Embodiment Construction

[0021] Equipment used in the on-line processing method for the manufacture of inner cavities of radiators for high-voltage transformers, see Figure 2a , 2b , including two shot blasting devices on the production line, washing equipment, paint extraction, exhaust gas recovery equipment, and on-line processing control program, which is characterized by the settings of the equipment used: the top of the production workshop is equipped with a transmission chain track for the entire line of inner cavity processing, The track is equipped with a transmission chain, a power unit of the transmission chain and a vehicle for lifting workpieces. The vehicle is equipped with an electric close control elevator, and the lower end of the elevator is used to hoist the radiator workpiece. A group of radiator workpieces is hoisted vertically by the car, and the upper top is also equipped with air ducts and air outlets for the exhaust gas generated by the shot blasting / sanding unit, paint extrac...

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Abstract

The invention discloses an online treatment method and equipment for manufacturing an inner cavity of a radiator for a high-voltage transformer. The online treatment method is characterized in that anID code and CNC information are added to a workpiece online; a program controls each processing time interval to be 5-8min and the transmission speed to be 8-12m / min; the surface is subjected to descaling and shot blasting, the workpiece enters a station of air-free full-hydraulic flow inner cavity flushing equipment, a flushing fluid is kept and a leakage test is carried out in a pressurizing manner; hot air is drawn into the workpiece and enters an inner cavity to draw paint; when the vacuum degree is 200-500Pa, a vacuum valve is automatically closed and a paint pipe valve of a lower-opening flange of the workpiece is opened and stands for 1-3min; a vacuum relief valve of an upper flange opening is automatically opened and the paint in the inner cavity returns to a paint can; the air isdrawn, the paint in the inner cavity is dried through a vacuum method under 1,000Pa; a diluent in a paint film in the inner cavity is quickly separated out of the surface by using negative pressure;and a gaseous diluent is drawn into a recovery filter device to recover the diluent. Linear continuous production is kept and the problem of production of the existing radiator industry is relativelywell solved.

Description

technical field [0001] The invention relates to the field of processing, high-voltage transformer manufacturing, in particular to an on-line processing method for the inner cavity of a sheet radiator for high-voltage transformers. Background technique [0002] At present, the inner chamber treatment process for manufacturing radiators for high-voltage and extra-high-voltage transformers adopts an off-line step-by-step process. [0003] 1. After the heat sink is formed and welded, the inner cavity is inflated and airtight, and then according to the relevant process regulations, it is placed in the water tank to observe the air bubbles to find the leakage point of the product and repair welding to achieve the non-leakage performance of the product. [0004] 2. During the production process of the radiator, there will be welding slag and debris inside. After the radiator is connected to the transformer, the transformer coil cooling oil in the transformer communicates with the i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F27/08H01F27/12B05B14/00B05D7/22B01D46/00B01D53/04
CPCB01D46/00B01D53/04B01D2253/102B05D7/22H01F27/08H01F27/12Y02P70/10
Inventor 王天林曲寿晴王冬冬姜洪强
Owner SHENYANG TIANTONG ELECTRICITY
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