Vacuum drying equipment for transformers
Features:
By adopting the pressure swing drying process, the drying time is
reduced by about 30-40% compared to conventional vacuum drying,
with reliable performance, high efficiency, and energy saving.
Computer automatic control, achieving true unmanned and fully
automatic drying.
The computer automatically performs endpoint judgment, and the
judgment results are accurate and reliable.
The heat transfer oil and steam heating method for the inner
discharge pipe of the tank are optional.
Door opening methods: electric sliding door, hydraulic flip up
door, electric swing door
Tank structure: horizontal square, horizontal circular
The main purpose of the equipment
This equipment is used for the drying treatment of transformers or
other electrical products with a voltage level of 35KV and below,
and a single unit capacity of 16000KVA and below. Party B
guarantees the process and quality requirements of the product
treatment, and provides process treatment plans and related control
procedures for two voltage levels of 35KV and 10KV.
Technical Proposal
1. Equipment composition
1.1. One set of vacuum drying tank system
1.2. One set of electric door opening system
1.3. One set of electric trolley system
1.4. One set of vacuum system
1.5. One set of low-temperature condensation system
1.6. One set of heating system
1.7 A set of cooling water pipeline system
1.8 One set of pneumatic Plumbing
1.9. One set of control system
2. Equipment power, water, gas source, and basic conditions
requirements (provided by the user)
2.1. Rated power: 110kW, 380V, 50Hz, three-phase five wire
dedicated distribution cabinet, with power connected to the
electrical control cabinet.
2.2. Water source: Pressure>0.1MPa, maximum
consumption>3m3/h, water temperature ≤ 25 ℃.
2.3. Compressed air: 0.4~0.6MPa, with a compressed air consumption
of approximately 0.3m3/min.
2.4. Equipment footprint: approximately 7000 × 8500mm.
3. Technical conditions of each system
3.1. One set of vacuum drying tank system
Technical indicators:
Tank size Ф 3200× 4000mm, horizontally placed on the ground, with
the track inside the tank flush with the ground. The side moving
electric door is opened, and when the tank door is closed in place,
it is pneumatically locked; The direction of opening the door is to
face the tank door and move it electrically to the right side to
open.
Extreme vacuum degree (no-load, cold state) ≤ 10Pa, leakage rate
(no-load, cold state) ≤ 100Pa · L/S.The tank is heated by a row of
Negage pipes. The heat transfer oil is used as the heat transfer
medium. The area of the heated row pipes meets the process
requirements of the variable pressure method. The heated row pipes
are made of seamless steel pipes and arranged on four sides (both
sides, bottom and back).
The working temperature is 115 ± 5 ℃, with automatic temperature
control. The tank is equipped with three temperature sensors to
measure the temperature of the space inside the tank, the
temperature of the body, and the insulation material.
The flange sealing ring of the tank body is a high-temperature and
oil-resistant sealing ring.
The tank is equipped with a work trolley, with a load capacity of
30T and a size of 2200mmX4000mm.
Rock wool insulation, stainless steel (SUS430) sheet armor
