US-6S Transformer vacuum furnace
US-6S
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Advantages
- uniform drying of the entire transformer core volume;
- economic use of electricity;
- reduced duration of drying;
- simple operation;
- removal of moisture from chamber.
We present to your attention a transformer vacuum1Vacuum is space devoid of matter. An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. furnace US-6S, designed for drying the solid insulation2 The solid insulation materials widely used in the transformer are paper, pressboard, and transformer board, which are formed from the cellulose found in plants. of power transformers3A transformer is a static electrical device that transfers electrical energy between two or more circuits..
A common practice during the production or repair of power transformers is to remove moisture from paper insulation. The dried insulation has dielectric strength4Dielectric strength is the minimum applied electric field (i.e. the applied voltage divided by electrode separation distance) that results in breakdown. This is the concept of breakdown voltage. 20 times greater than not dried one, as moisture affects its dielectric breakdown5Electrical breakdown or dielectric breakdown is when current flows through an electrical insulator when the voltage applied across it exceeds the breakdown voltage..
Depending on the types of transformers there are several ways to remove moisture from the active part. One of them is drying with a vacuum furnace (vacuum oven).
Drying of power transformers6The drying process should be carried out to remove water and air vacuoles contained in the cellulose-based paper of transformer. with a vacuum furnaces has the following advantages:
- more intensive evaporation of moisture in comparison with drying with warm air or natural drying;
- optimal overall performance and reduced processing time.
GlobeCore offers a transformer vacuum furnace with modifications, adapted to meet specific needs of the customer. The design, accounts for productivity, dimensions, and placement location, loading method, degree of automation, etc.
The following picture shows a vacuum drying cabinet US-6S.
Transformer vacuum furnace: the main components and assemblies
1 – Control cabinet
2 – Vacuum unit BV-1000
3 – Compressor
4 – Oil heater PPM-18
5 – Vapor condenser
6 – Condensate collection tank
7 – Furnace chamber
8 – Door of the furnace chamber
9 – Sliding carriage
Principle of operation
The active part of the transformer is loaded onto the sliding carriage by a travelling crane or a loader. The control of the carriage movement (motorized drive), closing and opening of the doors of the furnace chamber (pneumatic drive) is performed by an operator from the control cabinet.
To heating of the furnace chamber is done by technical oil, which, in turn, is brought to the required temperature by an oil flow through heater.
Remember that the price for a transformer vacuum furnace depends on the required dimensions, capacity, and technological features of the customer’s process.
Additional Features
Also, GlobeCore produces vacuum drying chambers for various raw materials:
- powders and pastes;
- food products;
- wood, etc.
| No. |
Parameter |
Value |
| Drying chamber | ||
| 1 | Internal dimensions, mm, max | |
| – depth |
2,000 |
|
| – width |
1,300 |
|
| – height |
1,600 |
|
| Heating section | ||
| 2 | Heater power, kW |
45 |
| 3 | Temperature adjustment range, °С |
20…120 |
| 4 | Quantity of thermal electric heaters, pcs |
15 |
| Vacuum section | ||
| 5 | Capacity, m3/h |
1,000 |
| 6 | Total power level of engines, kW |
11 |
| 7 | Achieved vacuum level, mbar |
1 |
| Circulation system | ||
| 8 | Capacity, m3/h |
2,000 |
| 9 | Fan power, kW |
2.2 |
| Exhaust system | ||
| 10 | Capacity, m3/h |
2,000 |
| 11 | Fan power, kW |
1.1 |
| Condensation system | ||
| 12 | Chiller power, kW |
3.0 |
| 13 | Cooling performance of chiller, kcal/h |
6,000 |
| 14 | Condensation area, m2 |
7.5 |
| 15 | Heat exchanger (condenser) type |
shell-and-tube |
| Pneumatic system | ||
| 16 | Compressor power, kW |
1.1 |
| 17 | Pressure, bar |
9 |
- uniform drying of the entire transformer core volume;
- economic use of electricity;
- reduced duration of drying;
- simple operation;
- removal of moisture from chamber.
GlobeCore US vacuum ovens can be used for:
- vacuum drying of transformers, coils, electric motors, and other electrical components for moisture removal which improves electrical safety and performance;
- production of insulating materials and components for electrical equipment;
- vacuum drying of active pharmaceutical ingredients to ensure their stability and effectiveness;
- vacuum drying of ingredients such as herbs, spices, and fruits to preserve their flavor, color, and nutrients;
- vacuum drying of archeological artifacts, including wooden objects and papyri, to ensure preservation and maintenance thereof;
- drying of powdered materials for 3D printing;
- drying of fiber optic cables before sealing;
- drying of adsorbents, such as activated carbon, for improved efficiency;
- vacuum drying of electronic components, such as printed circuit boards, before placement of components to ensure reliable connections;
- vacuum drying of grain, seeds, and other agricultural products for proper preservation and storage time extension;
- vacuum drying of polymers and composite materials before use in production to remove moisture and to improve the end-product quality;
- drying of ceramic products before sintering to ensure uniformity and to prevent cracking;
- heat treatment and strengthening of metal components, such as titanium and nickel alloys;
- burning of composite materials;
- hardening and quenching of metals;
- heat curing of photospective coatings;
- drying and heat treatment of semiconductor plates;
- sterilization of medical tools and components;
- drying of foods with a high moisture content for extended storage life;
- drying of chemical substances and pharmaceutical products;
- vacuum spraying for application of coatings;
- vacuum infiltration to improve the strength and rigidity of composites;
- vacuum heating for processing and improved coloring of precious stones;
- drying of electrodes and separators for lithium-ion and other types of batteries;
- recovery of metals from electronic scraps and other materials in the vacuum medium;
- drying and heat treatment of filter materials to improve their efficiency;
- post-processing of 3D printed parts to improve their mechanical properties;
- vacuum drying of wood to upgrade its quality and to shorten the drying times;
- heat treatment of LED components to improve their efficiency and durability;
- drying of biological specimens and other materials for preservation and examination;
- thermal processing of catalysts used in the chemical industry to activate chemical reactions.
Equipment configurations that are not included in this configurator can be implemented via a separate request to [email protected].
