Transformer vacuum drying equipment

Purpose: For use in the vacuum drying process of electrical products such as transformers, to enhance insulation performance.

Specially developed for the technological characteristics of current transformers.  

The pressure swing vacuum drying process is adopted.  

For high-voltage oil-immersed transformers, this equipment set features a vacuum drying process using the pressure transformation method combined with vacuum oil injection, meeting the production process requirements for oil-immersed transformers.  

Based on the specifications of the product to be processed, select the process parameters, which can be adjusted as needed.

The entire equipment is computer-controlled, ensuring fully automated control of the entire operational process.

The entire set of equipment can be configured, displayed, measured, recorded, and controlled in real-time.

Automatically record the process curve of the drying process, record the curves of various temperatures and pressures against time, and save the curves as historical data for future reference.

Automatically perform drying qualification judgment and automatically indicate process completion.

(1) Determine whether the drying is qualified based on different rates of water vapor pressure increase.

(2) Use a dew point sensor to determine whether the drying is qualified.

Operate the fail-safe protection function

When a certain device malfunctions, it can automatically trigger an alarm and provide maintenance procedures and simple troubleshooting methods. After a sudden power outage, it can save various data and program execution statuses, and execute corresponding operation procedures to keep the system in a safe state. After power is restored, it can continue to execute from the original process or manually intervene to execute from a certain process according to needs.

Vacuum system:

(1) Using a vacuum pump with water vapor removal capability as the backing pump can effectively prevent damage to the vacuum pump caused by emulsification of vacuum pump oil.

(2) The design incorporates measures to prevent oil and water backflow, protecting the coil from contamination

(3) A two-stage condenser is adopted, featuring a large condensing area and automatic water drainage. The core material of the condenser is stainless steel tubes, which are durable and long-lasting.

Multiple safety protections for the heat transfer oil heating system

(1) The specially developed safe-type electric heating center using heat-conducting oil by Shenrui ensures high safety and eliminates potential safety hazards.

(2) The heating circuit is equipped with an automatic release device for contactor adhesion to prevent safety accidents caused by overtemperature, and also features an overtemperature alarm.

Equipped with a low-temperature refrigeration water chiller, it achieves good drying and water removal effects.

Key clients:

Hefei ABB Transformer Co., Ltd

Shenyang Purui Si Electric Co., Ltd

Shenyang Kexiang Electrician Co., Ltd