How are the zones of vacuum pressure impregnation equipment divided? The specific content is as follows:
When designing the vacuum pressure impregnation process, this area is generally divided into four parts: the impregnation area, the machine room, the control room and the drying room area. Under the premise that the fire protection grade of the vacuum pressure impregnation area has been determined, in order to design and construct the factory building economically and reasonably, it is necessary to design the factory building by area.
According to the Code for Design of Electrical Installations in Fire Hazardous Environments, explosive gas atmospheres shall be zoned in accordance with the following provisions based on the frequency and duration of the occurrence of explosive gas mixtures:
An environment where explosive gas mixtures occur continuously or for a long time;
2. An environment where explosive gas mixtures may occur during normal operation;
3. An environment where explosive gas mixtures are unlikely to occur during normal operation, or even if they do occur, only for a short period of time.
Impregnated paint area
The impregnation area is equipped with impregnation tanks and storage tanks. The entire impregnation process of the motor is completed in the impregnation area. The paint storage tank is a container for storing insulating varnish. Under normal circumstances, the lid of the paint storage tank will not be opened, and the tank is in a vacuum state. If the tank is not filled with inert gases such as nitrogen, then the surface of the paint liquid in the paint storage tank is a continuous release source.
The paint immersion tank is a container for motor paint immersion. After the motor undergoes processes such as vacuuming, paint transportation, pressurization, paint return, and paint dripping inside the paint immersion tank, it is lifted out of the tank. Before the can lid is opened, the residual styrene vapor in the impregnation tank is drawn into the exhaust gas purification treatment device through the exhaust devices at the tank body and the tank mouth for treatment and then discharged at a high altitude. Even if a small part may still volatilize into the surrounding air of the impregnation tank, it only exists for a short time.