Multifunctional vacuum impregnating equipment

A vacuum immersion and multi-functional technology, applied to electrical components, insulators, circuits, etc., can solve the problems of uncontrollable oil immersion speed, unsatisfactory oil immersion method, and failure to heat the oil tank, etc., to achieve controllable oil immersion flow rate and oil discharge The process is gentle and realizes the effect of low liquid level alarm

Active Publication Date: 2016-05-25
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the vacuum oil immersion equipment at home and abroad cannot realize the vacuum drying and oil immersion process at the same time, and has the disadvantages that the oil tank cannot be heated independently, the oil immersion speed is uncontrollable, and the oil immersion method is not ideal.

Method used

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  • Multifunctional vacuum impregnating equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024]This experiment is an example of vacuum drying. The heating temperature range of the vacuum tank 23: RT+10-150°C, the heating temperature range of the oil tank 3: RT+10-150°C, the temperature fluctuation: ±1°C, the vacuum degree of the vacuum tank 23≤133Pa , the size of the vacuum tank 23 is φ500×450mm, prepare 20 pieces of insulating cardboard to be dried before the experiment, the thickness of the insulating cardboard is 2mm, and the diameter is 150mm. Put the oil valve 28 and the inflation valve 14 on, put the insulating cardboard to be dried into the vacuum tank 23, close the sealing cover 26, press the sealing gasket 25, and make the vacuum tank 23 completely sealed. Turn on the main power switch and the vacuum switch, set the vacuum degree on the vacuum instrument 12 to -90KPa, the vacuum pump 21 starts to work, and detect the pressure difference between the air pressure in the vacuum tank 23 and the atmospheric pressure through the pressure sensor 22 in the vacuum ...

Embodiment 2

[0026] This experiment is a vacuum drying oil immersion experiment: vacuum tank 23 heating temperature range: RT+10-150°C, oil tank 3 heating temperature range: RT+10-150°C, temperature fluctuation: ±1°C, vacuum tank 23 The vacuum degree is ≤133Pa, the size of the vacuum tank 23 is φ500×450mm, 20 pieces of insulating cardboard to be dried before the experiment, the thickness of the insulating cardboard is 2mm, the diameter is 150mm, a high temperature and corrosion resistant aging tank, and the insulating cardboard sample is put into the aging tank , an appropriate amount of oil sample. First close the oil discharge valve 18 on the discharge pipe at the bottom of the vacuum tank, the oil discharge valve 28 on the connecting pipe 29 connected to the fuel tank 3, and the inflation valve 14, put the aging tank with insulating cardboard to be dried into the vacuum tank 23, close the seal The cover 26 is pressed into the sealing gasket 25 to completely seal the vacuum tank 23, and ...

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Abstract

The invention relates to multifunctional vacuum impregnating equipment, and belongs to the technical field of testing equipment for simulating vacuum dry impregnation. The equipment comprises a vacuum pump (21), a vacuum tank (23), an oil tank (3) and a PLC automatic control system (15), wherein the vacuum pump (21) is arranged outside a tank body; the vacuum pump (21) is connected with the vacuum tank (23) through an exhaust pipe (17); the exhaust pipe (17) is provided with an electromagnetic valve (19) and a cold well; the oil tank (3) is arranged at the upper part of the tank body; the oil tank (3) is connected with the vacuum tank (23) through a communicating pipe (29); the communicating pipe (29) is provided with an oil drain valve; and the PLC automatic control system (15) is connected with a vacuum tank temperature controller (8), an oil tank temperature controller (9) and a vacuscope (12). The multifunctional vacuum impregnating equipment can achieve vacuum drying and impregnating process of an insulating material, and can stably run at target temperature and air pressure for a long period of time; and meanwhile, the equipment is reasonable in structure, safe, reliable, convenient and simple to operate, high in work efficiency and excellent in performance.

Description

technical field [0001] The invention belongs to the technical field of test equipment for simulating vacuum drying and oil immersion, and relates to a novel multifunctional vacuum oil immersion equipment. Background technique [0002] As an important equipment for power conversion and transmission, transformers have high requirements on insulation performance. Whether the insulation state is good or not directly affects whether the transformer can work normally. At present, the types of transformers put into operation are mainly oil-immersed transformers, and their internal main insulation mainly uses oil-immersed transformers. Therefore, it is of great engineering significance to study the insulation performance of oil-impregnated insulating paper / cardboard. The preparation process of the oil-impregnated insulating material is to vacuum-dry the insulating material first, and then carry out the oil-immersing process in a vacuum environment. Because oil immersion or not, dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/02
CPCH01B19/02
Inventor 杨丽君李金忠高竣彭攀赵学童刘骁李剑孙伟栋杜永永赵志刚申泽军
Owner CHONGQING UNIV
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