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Industrial Standard: JB/T11056-2010

KVPD Series
Vapor Phase Drying

Advanced vacuum drying solution developed by Kaixuan (KASAVA) Vacuum, CE certified (2012) for 110kV-1000kV ultra-high voltage transformers.

Certificate CE Certified (2012)
Capacity 110kV - 1000kV
Technical Catalog
Kaixuan KASAVA Factory

Operating Principle & Advantages

Based on the principle of evaporating liquid kerosene under vacuum and condensing it on the product. This method is much faster and more homogeneous than conventional heating.

High Heating Speed

Kerosene vapor condenses on the product surface, transferring latent heat. Heat transfer efficiency is higher than other methods. Reaches 110°C - 130°C quickly and safely.

Excellent Cleaning

Condensed kerosene acts as a solvent, washing away oily dirt and dust on the transformer. Ideal for repaired products.

Energy Efficiency

The entire process takes place under vacuum. The oxygen-free environment prevents aging of insulation material while maximizing water evaporation rate and energy saving.

Process Management

KVPD Process Flow

01

Preparation
Phase

Products are placed in the autoclave and vacuumed. While the autoclave heats up, the evaporator preheats kerosene to vaporize it, spreading vapor inside the tank.

02

Heating
Phase

Kerosene vapor exchanges heat with the product and condenses. Condensed kerosene returns to the buffer tank and evaporator, forming a cycle. Continues until target body temperature is reached.

03

Pressure
Reduction

Kerosene supply stops. Mixed gas is pumped out and condensed for recovery. Heating and pressure reduction phases can alternate for optimal drying.

04

High
Vacuum

Main vacuum pump runs to lower pressure below **10Pa**. Process completes when temperature and dew point meet technical requirements.

Technical Superiorities

As Kaixuan (KASAVA), we determine industrial standards with continuous R&D and over 20 patented technologies.

  • Patented Sealing Double O-ring on autoclave door and hydraulic bridge sealing technology for air-cushion vehicle passage.
  • Advanced Filtration Automatic backup kerosene filter system. System switches automatically when the filter is clogged.
  • Remote Access & SMS SMS notification to maintenance personnel in case of failure and remote diagnosis/intervention capability.

Safety & Standards

Kerosene storage compliant with national fire safety standards.
CE compliant, fireproof, and protected wiring.
Automatic data and program backup during power outages.

Optional Advanced Features

Micro Water Test

Kaixuan (KASAVA) patented invention. Measures drying degree as "g/ton/hour" and determines the exact endpoint.

Active Cooling

Shortens furnace exit time and prevents damage to air cushions of transport vehicles.

Combined Heating

Includes both steam and electric heating systems. Switchable based on energy availability.

Oil Spraying

Integrated system for oil spraying onto the transformer body (active parts).

Coil Iso-static Pressing

Possibility to apply iso-static pressing to transformer coils during drying process.

Scale Prevention

Imported system for hard water regions. Effectively reduces scaling in water-cooled parts.

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