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Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment

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Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment

Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment
Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment

Large Image :  Pressure Swing Drying Oil Immersed Distribution Transformer Vacuum Drying Equipment

Product Details:
Place of Origin: WUXI
Brand Name: Gremet
Certification: CE,COC,ISO
Model Number: 5000×3000×3000
Payment & Shipping Terms:
Minimum Order Quantity: 1 SET
Price: deciding to the size and configuration
Packaging Details: standard exporting packing
Delivery Time: 20-50 days
Payment Terms: T/T, L/C, D/A, D/P, Western Union, MoneyGram
Supply Ability: 30-50 sets
Detailed Product Description
Drying Type: Pressure Changing Usage: Remove The Moisture From The Transformer Insulation Material
Exporting Country: Ecuador Installation: Two Engineers Go To Customer Install Around 30 Days
High Light:

Pressure swing drying equipment

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Distribution Transformer Vacuum Drying Equipment

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Vacuum drying equipment for Distribution Transformer

vacuum drying equipment

 

Introduction: Variable voltage vacuum drying equipment is currently an ideal equipment for drying oil paper insulated power equipment such as transformers with voltages of 220kV and 110kV and below, transformers with voltages of 500kV and below. Compared with traditional hot air circulation drying, ordinary vacuum drying, and low-frequency drying equipment, it reduces processing time by about 1/3, energy consumption by 30% -50%, and the minimum moisture content of the treated insulation material can reach 5ppm. Its equipment investment is only 25% -45% of that of kerosene vapor phase drying equipment. It is currently the preferred drying treatment equipment for transformer manufacturers.

Working principle: By vacuuming, the saturation vapor pressure of water in the environment where the coil insulation material is located is increased, making it easier for it to evaporate from the insulation paper. During this period, it is continuously heated and the temperature is increased to ensure the gasification energy of water, making it easier to discharge.

 

Features: Ordinary heating and drying start from the surface and gradually move towards the interior of the insulation material. Due to rapid surface drying, the capillary tubes of the outer insulation paper shrink, making it difficult for the internal moisture to evaporate and prolonging the drying time. The variable pressure method intermittently exhausts during the drying process, causing the evaporated water vapor and hot air to circulate together in the tank. Due to the much larger heat capacity of water than air, the heating speed is faster, and the diffusion of water vapor is strong, resulting in a relatively small temperature difference inside and outside the insulation material. In addition, due to the fact that ordinary heating often sets the heating temperature very high in order to shorten the drying time, it is easy to cause the insulation paper on the surface of the coil to become brittle, leading to product quality problems. The heat source temperature of the variable pressure drying equipment does not exceed 115-120 ° C, and the iron core temperature is controlled at 80 ° C, so the dried product cannot have the above problems. Due to this advantage, the variable pressure drying equipment can also be used for drying plastic parts and other high-temperature resistant products.

 

The process of pressure swing drying:

1. Preheating stage: 2. Variable pressure dehydration stage: 3. Final drying stage: 4. End point judgment:

Equipment composition:

1. Vacuum drying tank body: There are two types based on usage: circular and rectangular. Circular is generally manually locked for opening the door, while rectangular is electrically and hydraulically locked for opening the door. Heating pipes are distributed inside the tank. Configure a transport trolley for the entry and exit of transformers into the tank. In order to facilitate the general sinking of the tank body below the ground, ensure that the trolley track is level with the ground. Users can also configure their own air cushion vehicles.

2. Trolley system: There are two parts: a load-bearing trolley and a driving device. The trolley operates at low speed, with both manual and automatic modes. There are two forms of power for automatic trolleys: using workshop driving and equipped with electric vehicles.

3. Vacuum system: Two or three levels of vacuum are configured according to usage requirements. In order to prevent water vapor from damaging the pump, the system is equipped with a condenser.

4. Heating system: Generally, thermal oil is used as the heat transfer medium, heated by an electric heater, and forced circulation is carried out using a high-temperature pump. Heat is dissipated through the exhaust pipe in the vacuum tank. The system is equipped with a temperature controller that adopts PID adjustment, and the temperature control accuracy can reach 1 ° C. The system can also be controlled by steam heating and pneumatic thin film regulating valves.

5. Condensation system: mainly used to condense the water evaporated from dry objects, protecting the effective operation of the vacuum pump. Generally, small equipment is cooled with water, while large equipment is equipped with industrial refrigerators.

6. Pneumatic system: composed of compressed air source, control valve, pressure detection system, etc., used for controlling various vacuum and material valves.

7. Cooling water system: mainly used for cooling some vacuum pumps and condensers. At present, our company has developed pouring equipment that does not require cooling water.

8. Hydraulic system: used for locking rectangular tank doors and also for executing the flipping of tank doors. Used for opening the flip bridge when configuring an air cushion vehicle

9. Control System: Used for the control of the entire system operation, there are two control modes: PLC and PLC+PC, both of which are automatic control modes. PLC+PC control is more convenient to use, not only can process parameters be easily modified, but real-time parameters can also be recorded for future reference. Devices with PC control can also set different permissions for different operation levels, effectively protecting process data and preventing quality and safety accidents.

Contact Details
WUXI JINQIU MACHINERY CO.,LTD.

Contact Person: Mrs. Stacy

Tel: 008613400027899

Fax: 86-510-83211539

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