Overview of the structure of explosion-proof piano desktop positive pressure cabinet

Explosion proof piano desktop positive pressure cabinet products are suitable for use in factories such as petrochemicals, offshore drilling platforms, metallurgy, pharmaceuticals, light industry, textiles, food, biotechnology, aerospace engineering, and military facilities, with explosive gas or vapor environments of Class IIA, IIB, and IIC T1 to T4; Altitude not exceeding 2000 meters; At 25 ℃, the relative humidity is below 95%; The working environment temperature is between -20 ℃ and+40 ℃. Various ordinary detection instruments, analysis instruments, display instruments, microcomputer touch screens, and ordinary electrical components can be installed according to user requirements, and there are basically no restrictions on the user's internal electrical components.

Provide system and user access cables; Install explosion-proof components for the automatic control system and user's power distribution system components in the positive pressure chamber.

The air intake method of this distribution cabinet is ventilation type, which means uninterrupted continuous air supply. The working heat of the components installed in the positive pressure chamber can be carried away with the air path, which has a good heat dissipation effect.

This product is designed, manufactured, and inspected in accordance with GB3836.1-2000, GB3836.5-2004, and relevant standards.

Installation of explosion-proof piano desktop positive pressure cabinet body

1. Installation position of cabinet: Indoor or outdoor with a roof and flat areas without obvious vibration.

2. The installation method of this product is floor standing, and a dedicated installation hole is set below the product for fixing. Please refer to the technical drawings for specific parameters.

3. The wiring method is cable trench wiring. The user's cable trench structure can refer to relevant national standards and industry standards, and design and construct according to the structural requirements of this cabinet.

4. When handling, please note that this product is strictly prohibited from tilting significantly, and the tilt angle should not exceed 100 degrees.

5. This product is strictly prohibited from being moved by prying, hammering, or other methods during transportation, installation, and positioning. Otherwise, it may affect the sealing performance of the product and cause it to malfunction.

6. This product is equipped with an air inlet and an exhaust outlet. The exhaust outlet can be used for on-site discharge or directed to a safe area for discharge. On site discharge must pass through a fire damper before it can be discharged. The user must provide an intake gas source (clean gas) on site, and the gas source pressure is generally controlled at 0.2-0.8MPa. When the intake gas source is nitrogen, be careful when using nitrogen as a protective gas in a closed operating room. If nitrogen must be used as a protective gas, please pay attention to on-site ventilation to ensure personal safety.

7. Due to the installation of precision electrical appliances such as industrial control devices and touch screens, a dry filter needs to be installed at the inlet of the air source to ensure that the air source is dry and clean, otherwise it will affect the service life of the electrical appliances.

8. It is strictly prohibited to adjust the pressure reducing valve, otherwise it may cause high-pressure cabinet flushing (the pressure reducing valve has been adjusted before leaving the factory).