Compressed air system

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2 compressed air compressors as screw compressors with integrated refrigeration dryer and 3000 liter compressed air storage

Compressed air systems provide pneumatic auxiliary energy in many areas within and outside of industry by means of expandable compressed air .

mobile, mobile compressor with compressed air tank as storage

As a rule, a compressed air system consists of the pressure generator, the pressure accumulator and distribution devices. In detail, these are the following components:

• Compressor / compressor as a pressure generator
• Oil filter
• Dryer (often two parallel units for operation and regeneration)
• dust filter
• Air tank as compressed air storage, equipped with
  • Pressure gauge with pressure display and limit pressure marking ( required according to TRBS )
  • Pressure relief valve
  • Pressure switch
• Maintenance unit , usually consisting of the four components
  • Pressure control valve
  • Air filter
  • Drainage with floor outlet
  • Oil mist device
• Control with valves
• Distribution network

If required, a compressed air system can also contain the following components:

• Pressure reducer

Package unit mounted directly on the feed line consisting of a compressor, compressed air tank and fittings

With the exception of the air tank, which is often set up separately, in smaller systems with a storage volume of up to approx. 400 liters, the compressor, dryer and control are usually combined as a compact unit on a mounting frame ( package unit ).

The air pressure (in bar) is the most important parameter for the design . Typical design pressures are 7 bar, but pressures from 4 to 13 bar are also common.

A distinction is made between dry air and air to which oil has been added.

The compressed air distribution network is often used in practice as an energy supplier for compressed air tools; Among others, the following tools are common:

• Bolt-firing tool
• Air hammer
• Pneumatic nailer
• Pneumatic grinder
• Pneumatic screwdriver
• Ratchet with pneumatic drive
• Needle scaler
• Spray gun

Common uses are also the tire filling stations at petrol stations or compressed air-operated devices in car wash facilities .

See also

• Vane motor

literature

• Werner Mohrig: Compressed air practice: generate - process - distribute - apply. Resch-Verlag, Graefelfing 1988, ISBN 3-87806-111-0