6.3 Dimensioning of the pipes
A compressed-air network consists of three different line levels:
- Main line:
It connects the compressed-air generation unit with the distribution network. The main line should be dimensioned in such a way that reserves exist for future extensions.
- Distributor:
It distributes the compressed air within the section of the consuming unit. It can be built both as a ring or stub line as well as also in combination of a loop line with integrated stub lines.
- Connecting line:
That’s the connection between distributor and consuming unit. The connection of the connecting line at the distribution point shall be led up out of the distribution to avoid the condensate leaking the pipe.
Correct planning of a compressed-air network influences directly the performance of the connected consuming unit and the costs of the production of compressed air.
The required diameter is determined in considering the required volume flow and the admissible pressure loss. The pressure loss from compressor to the most distant consuming unit should not exceed 0.1 b for a rigidly attached compressed-air network.
The connection components are critical issues within a compressed-air system. Coupling, hoses or servicing units can cause high losses if they have not been correctly designed. In addition, there are lots of connections that are located on a small space and could have leakages.
- Table of contents
- 1. Fields of application of abrasive blasting technology
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2. Blasting technology
- 2.1 Airless blast cleaning
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2.2 Injection blasting
- 2.2.1 Compressed air blasting (also air blast cleaning or sand blasting)
- 2.2.2 Pressure blasting (injector blasting)
- 2.2.3 Vacuum-compressed-air blasting and vacuum injection blasting
- 2.2.4 Damp blasting
- 2.2.5 Wet blasting
- 2.2.6 Slurry blasting
- 2.2.7 Ice Blasting
- 2.2.8 Water- jetting cleaning and hydro-jetting
- 2.2.9 Wet blasting for fine surface treatment
- 2.2.10 Combination of different blasting methods
- 2.3 Laser cleaning
- 3. Abrasive
- 4. Efficiency assessment of abrasive blasting
- 5. Influence of compressed-air blasting on the surface of the workpiece
- 6. Generation of compressed air
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7. Plants for compressed-air blasting
- 7.1 Small and medium-sized blasting pots
- 7.2 Large blasting pots
- 7.3 Double-chamber blasting pot
- 7.4 Mixing and dosing valve
- 7.5 Hoses, lengths of hoses, couplings
- 7.6 Selection of a blasting pot in considering the wear and tear behaviour
- 7.7 Increased wear and tear at the blasting pot caused by wrong adjustment
- 8. Remote control and emergency shut-downs
- 9. Jet nozzles
- 10. Stationary blasting halls
- 11. Mobile abrasive blasting equipment
- 12. Laws and provisions