Do you understand the application field and design principles of positive pressure cabinets?

Explosion-proof positive pressure cabinets are suitable for petrochemical, offshore drilling platforms, metallurgy, medicine, light industry, textiles, food, biological engineering, aerospace engineering, and military facilities. Steam environment; the altitude does not exceed 2000 meters; at 25 ℃, the relative humidity is below 95%; the working environment temperature is between -20 ℃ and + 40 ℃.

Explosion-proof positive pressure cabinets can be installed with various common detection instruments, analytical instruments, display instruments, transformers, soft starters, frequency converters, microcomputer touch screens, and ordinary electrical components according to user requirements, which basically have no restrictions on users' internal electrical components. The power distribution cabinet is composed of a cabinet body, an automatic control system, a gas distribution system, an alarm system, and a power distribution system; the positive pressure chamber contains some explosion-proof components of the control system and the user's power distribution system components. The explosion-proof positive pressure cabinet is welded with Q235 steel plate, and its joint surfaces have been specially sealed. The air intake of the explosion-proof positive pressure cabinet is ventilated, that is, uninterrupted continuous air supply. The working heat of the components inside the positive pressure chamber can be taken away with the air path, which has a good heat dissipation effect.

Under the control of the automatic control system, the explosion-proof positive pressure cabinet is fed with protective gas. The pressure in the positive pressure chamber is higher than the pressure outside the positive pressure chamber, forming a small positive pressure safe small environment, thus preventing flammable dangerous gases from entering the positive pressure Inside the cavity, to ensure the safe operation of ordinary instruments and electrical components. The automatic control system mainly completes a series of functions such as manual ventilation, supplemental gas, ultra-high pressure automatic alarm and exhaust, under-pressure alarm, and low-voltage interlock power off.