CT PT Round Jar Transformer Vacuum Resin Casting Machine Drying

Transformer Vacuum Drying with the Pressure Increasing Drying process for Transformers CT PT(Round Jar)

Product Apperance:

A vacuum drying oven with a Pressure Increasing Drying (PID) plant, using a candle tin, is a specialized equipment setup commonly used for drying power transformers. This method is known as the vacuum and pressure drying process. Here's how it typically works:

Vacuum Drying: The power transformer is placed inside a vacuum drying oven. The oven creates a low-pressure environment by removing air and moisture from the chamber. This process helps in removing moisture from the transformer's insulation and windings.

Pressure Increasing Drying (PID) Plant: The PID plant is an integral part of the setup. It consists of a pressure vessel, often referred to as a candle tin, which is connected to the vacuum drying oven. The candle tin is designed to withstand high pressures.

Pressure Increase: Once the vacuum drying phase is complete, the pressure inside the oven is slowly increased by introducing an inert gas (such as nitrogen) into the candle tin. By increasing the pressure, any remaining moisture trapped within the transformer's insulation is forced out.

Heat Application: During both the vacuum and pressure increase phases, heat is applied to the oven. The temperature is carefully controlled and gradually increased to facilitate the drying process. The temperature range and duration depend on the specific requirements of the transformer being dried.

Moisture Removal: As the pressure increases and the temperature rises, the moisture within the transformer evaporates and is carried away by the inert gas. The moisture-laden gas is then expelled from the oven.

Cooling and Venting: Once the desired drying level is achieved, the oven is cooled down, and the pressure is gradually reduced. This ensures that the transformer and its insulation regain ambient conditions without causing thermal stress.

The vacuum drying oven with a Pressure Increasing Drying plant (Candle Tin) is an effective method for drying power transformers. It helps eliminate moisture, enhance the insulation properties, and ensure optimal performance and longevity of the transformer. It is often used during the manufacturing process or when maintenance work is carried out on transformers.

1. EQUIPMENT COMPOSITION

2. TECHNICAL INDICATORS AND PARAMETERS OF EQUIPMENT:
   1. Vacuum pouring pot size Φ2000×L2400
   2. The pumping speed of the main pumping pump of the vacuum system is 300L/S
   3. Working temperature of pouring tank is 70 ~ 85℃
   4. Ultimate vacuum degree of pouring tank (cold state, no load) ≤50Pa
   5. Pouring tank leakage rate ≤50Pa.L/S
   6. The working vacuum of pouring tank is 50 ~ 100Pa
   7. The equipment adopts manual metering and dynamic mixing of materials.
   8. The equipment adopts vacuum casting process.
   9. The mixing tank adopts electric heating, heat conduction oil as heat transfer medium and automatic temperature control. The pouring tank is directly heated by electric heating element. All heating parts are insulated with thermal insulation materials, and the pouring tank is armored with stainless steel plate (SUS430); The mixing tank is armored with thin steel plate and coated on the surface. The surface temperature of the insulation layer is not higher than 20℃ room temperature.
3. EQUIPMENT POWER, WATER, AIR SOURCE AND BASIC CONDITION

REQUIREMENTS, (USER EQUIPPED WITH: POWER SUPPLY, AIR COMPRESSOR):

1. Rated power: 80kw, 380V, 50Hz, three-phase five-wire special distribution cabinet, power connected to the electric control cabinet.
2. Water source: pressure ≥0.2Mpa, maximum consumption 3m3/h, water temperature ≤25℃.
3. Compressed air: 0.4 ~ 0.6Mpa, maximum consumption of 0.3m3/min
4. Make foundation, steel frame and outer track of embedded tank according to our design drawings.

4. TECHNICAL CONDITIONS OF EACH SYSTEM:
   1. A SET OF 400L VACUUM MIXING DEGASSING TANK

Technical specification and application of tank

The effective volume is 400L

Heat conduction oil 10KW

Ultimate vacuum: 50Pa (no load, cold state)

No load leakage rate: 50Pa.L/S

Operating temperature: 60 ~ 80℃

Tank surface temperature Ambient temperature +20℃

Equipped with frequency control device, can adjust the stirring lifting speed according to the viscosity of the material;

Rock wool insulation, stainless steel plate (SUS430, 1.5mm thick) armored, surface coating

This tank is used for mixing epoxy resin and curing agent mixture and vacuum degassing.

The mixing tank is installed on the pouring master side of the vacuum pouring tank to increase production.

TANK BODY ACCESSORIES:

Product introduce:

A Pressure Increasing Drying (PID) plant, also known as a pressure boosting system or pressure vessel, is a component used in the vacuum drying process to remove moisture from materials or equipment. It is commonly employed in industries such as power generation, electrical engineering, and manufacturing.

The PID plant typically consists of a pressure vessel or container designed to withstand high pressures. This vessel is connected to the vacuum chamber or drying oven, creating a closed system. The purpose of the PID plant is to increase the pressure inside the chamber after the vacuum drying phase.

During the vacuum drying process, the pressure inside the chamber is reduced to remove moisture from the material or equipment being dried. However, some moisture might still be trapped within the material or in hard-to-reach areas. The PID plant helps address this by increasing the pressure, which assists in expelling the remaining moisture from the material.

To increase the pressure, an inert gas, such as nitrogen or dry air, is introduced into the pressure vessel. The gas is gradually pumped into the vessel, raising the pressure inside the chamber. The increased pressure helps force out any remaining moisture, ensuring a thorough drying process.

The PID plant is typically equipped with safety mechanisms to control the pressure levels and prevent over-pressurization of the system. Pressure gauges, relief valves, and pressure regulators are commonly used to monitor and control the pressure inside the vessel.

Overall, the Pressure Increasing Drying plant is an essential part of the vacuum drying process, ensuring effective moisture removal and achieving the desired dryness in materials or equipment.

Function:

The main function of a Pressure Increasing Drying (PID) plant is to enhance the drying process by increasing the pressure inside a vacuum chamber or drying oven. This function serves several purposes:

1. Moisture Removal: The PID plant helps remove any remaining moisture that may be trapped within the material or equipment being dried. After the vacuum drying phase, there can still be moisture present in hard-to-reach areas or within the material's structure. By increasing the pressure, the PID plant assists in expelling this moisture, leading to a more thorough drying process.

2. Accelerated Drying: Increasing the pressure inside the chamber accelerates the drying rate. When the pressure is increased, the boiling point of water decreases, allowing moisture to evaporate more readily at lower temperatures. This can significantly reduce drying time compared to relying solely on vacuum drying.

3. Effective Moisture Migration: The pressure increase created by the PID plant promotes moisture migration within the material being dried. The pressure differential between the interior and exterior of the material encourages moisture to move from areas of higher concentration to lower concentration, aiding in its removal.

4. Consistent Drying: The PID plant helps achieve a uniform and consistent drying process throughout the material or equipment. By increasing the pressure, moisture is forced out from all areas, including hard-to-reach spots, ensuring a more thorough and even drying result.

5. Improved Quality and Performance: By effectively removing moisture, the PID plant helps enhance the quality and performance of the material or equipment being dried. Moisture can cause insulation degradation, corrosion, and reduced electrical performance in items such as transformers or electrical components. The PID plant ensures that moisture is effectively eliminated, mitigating these potential issues.

Overall, the function of a Pressure Increasing Drying plant is to complement the vacuum drying process by increasing pressure, promoting moisture removal, accelerating drying time, and ensuring a more thorough and consistent drying outcome.

Benefits of a Pressure Increasing Drying (PID) plant:

Enhanced Moisture Removal: The PID plant is particularly effective in removing moisture from materials with complex structures or porous surfaces. The increased pressure helps dislodge and expel moisture that may be deeply embedded within the material, ensuring a more complete drying process.

Versatility: The PID plant can be used for a wide range of materials and equipment that require drying. It is commonly employed in applications such as drying power transformers, electrical components, insulation materials, ceramics, powders, and other moisture-sensitive products.

Preservation of Material Integrity: The PID plant offers a gentle and controlled drying method. By increasing the pressure gradually, it minimizes the risk of thermal or mechanical stress on the material or equipment being dried. This helps preserve the structural integrity and quality of the item being processed.

Reduced Drying Time: The combination of vacuum drying and pressure increase significantly reduces the overall drying time compared to traditional drying methods. The pressure increase facilitates the removal of moisture at lower temperatures, resulting in shorter drying cycles and increased productivity.

Improved Product Performance: Effective moisture removal through the PID plant contributes to improved performance and reliability of the dried materials or equipment. In industries such as electrical engineering, power generation, and manufacturing, achieving optimal dryness is crucial for ensuring the desired functionality and durability of the end product.

Quality Control: The PID plant allows for precise control and monitoring of the drying process. Pressure gauges, relief valves, and other safety mechanisms ensure that the pressure levels remain within the desired range, preventing over-pressurization and ensuring safe operation.

Cost Savings: The PID plant's ability to expedite the drying process and improve drying efficiency can lead to cost savings in terms of energy consumption and labor. Reduced drying time translates into lower energy requirements, while the improved drying quality reduces the need for rework or product rejection.

Compliance with Standards: Many industries have specific standards and requirements for moisture content in their products. The PID plant enables manufacturers to meet these standards by ensuring thorough moisture removal and achieving the desired dryness levels.

Overall, the function of a PID plant is to enhance the drying process, improve efficiency, and ensure the quality and performance of dried materials or equipment. By combining vacuum drying with pressure increase, it provides an effective and versatile solution for moisture removal in various industrial applications.