RABIE mte 508 POwer Point

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Your question can be asked and entertain after my presentation.. Listen carefully with the presentation…!

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BASIC PNEUMATIC

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Air is our medium Motion is our business Service is our mission

Compressed Air as a Working Medium : 

Compressed Air as a Working Medium ADVANTAGES: Air is available everywhere Compressed air is easily conveyed in pipelines over large distances Compressed air is insensitive to temperature fluctuations Compressed air need not be returned Compressed air is explosion proof Compressed air is clean Compressed air is fast Straight line movement can be produced directly

Compressed Air as a Working Medium : 

Compressed Air as a Working Medium DISADVANTAGES Compressed air is a relatively expensive means of conveying energy Compressed air requires good conditioning It is only economical up to a certain force expenditure of 20,000 N – 30,000 N Air is compressible Exhaust air is loud (reduced by using silencers) The oil mist mixed with air for lubricating purposes exhaust or escapes to the atmosphere

The Air Supply System : 

The Air Supply System An overview of what is done to the air to make it suitable for use on the production plant.

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Atmospheric Air Compressor Energy Supply Electric Motor Diesel or Petrol Engine Storage Drying Distribution Service unit Plant Compressed Air Supply Air Distribution System Absorption, Refrigeration, Adsorption Filter, Regulator, Lubricator Receiver Vane, Screw, Piston

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RECIPROCATING PISTON COMPRESSORS Piston Compressors Diaphragm Compressors ROTARY PISTON COMPRESSORS Sliding Vane Rotary Compressor Two-axle Screw Compressor Roots Blower FLOW COMPRESSORS Radial-flow Compressor Axial-flow Compressor Criteria for selection pressure discharge and delivery volume Types of Compressors

Piston Compressor : 

Piston Compressor The crankshaft rotates clockwise. Piston moves downwards and draws air from the atmosphere. Valves open due to differential pressure and not mechanically. After passing through the lower dead center,the inlet port closes and the exit port opens. The air is being pushed against the prevailing pressure. The point of valve opening depends on valve design.

Screw Compressor : 

Screw Compressor Screw compressors consist of two screw type profiles which rotate against each other. Both screws are driven to rotate in opposite directions. Air is being compressed continuously between the screws and the side walls of the housing. Pressure: up to approx. 10Bar

Sliding Vane Rotary Compressor : 

Sliding Vane Rotary Compressor It has an eccentrically mounted rotor which rotates in a cylindrical housing having inlet and outlet slots. Its advantages include compact dimensions, quiet operation and smooth steady air delivery. When rotating, the centrifugal energy forces the vanes against the wall, and owing to the shape of the housing, the chamber are increased or reduced in size.

Turbine Compressor : 

Turbine Compressor The shaft is driven at high revolutions. Turbine sections on the shaft accelerate the air to a high speed. When a high compression ratio is desired, several stages are required. Each stage will increase the pressure at a ratio of approximately 1:3.

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Air Recievers

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RECEIVER

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stores the compressed air cools the compressed air separates air from water, oil and sludge minimizes or lessens pressure fluctuations COMPRESSED AIR RECEIVER

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It acts as a reservoir, maintains an even pressure and allow switch on and switch off periods for compressor control. Receivers may be mounted horizontally or vertically, preferably in a well ventilated space. Selection Criteria: delivery volume of the compressor air consumption manhole Water drain cock Shut-off valve Pressure relief valve Thermometer Pressure Gauge

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Air Drier

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Absorption Drying Adsorption Drying Low Temperature Drying Air Drying

Absorption Drying : 

Absorption Drying Air flows from below, against a plate and through a stack of humidity absorbing material to the exit on top. The material dissolves in water and must be replaced from time to time.

Adsorption Drying : 

Adsorption Drying Two chambers are filled with a humidity binding material. Compressed air will pass through one chamber while the other is being dried by hot air. The material can be used for a long time. Regular switchover necessary.

Low Temperature Drying : 

Low Temperature Drying Low Temperature Drying Compressed air is cooled by a refrigerant flowing through a heat exchanger. Moisture is released due to the decrease of the dew point temperature.

Customer situation today – pollutant containing condensate : 

Customer situation today – pollutant containing condensate

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Air distribution

Fitting of Water Separators : 

Fitting of Water Separators It is recommended to install condensed water collectors before and after the water separator. Air distribution systems are often designed in single line. They should be slightly sloping (1-2%) in the direction of air flow so that the condensed water will flow down to a water trap installed at the end. Branches should be directed upwards to avoid water and dirt particles finding their way into pneumatic systems. Water traps with drain cocks should also be fitted at the end of each branch line.

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INSTALLATION OF PIPELINES Branch line Ring circuit

Air Pipe Installation : 

Air Pipe Installation The alternate to the single line is a ringline system. Ensures a largely even pressure distribution.

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Loss in the reliability of the operation of valves Corrosion of metal parts and in particular the inside diameter of the cylinder barrel Loss of repeatability and accuracy of working elements. EFFECTS OF INCORRECT PREPARATION OF AIR

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AIR PREPARATION AND DISTRIBUTION AIR SERVICE UNIT Pressure regulating valve Pressure gauge Air filter Compressed air lubricator

Air Service Unit : 

Air Service Unit Consists of an air filter, pressure regulating valve with pressure gauge and a compressed air lubricator. Air Filter - filters the compressed air of all impurities and any condensate it contains. Pressure Regulator - a reducing valve is assigned the duty of maintaining a relatively constant operating pressure regardless of fluctuation and consumption rate. Compressed Air Lubricator - used to provide the pneumatic components with sufficient lubrication. These lubricants inhibit the wearing of all moving parts, keep frictional forces to a low level, and protect the equipment from corrosion.

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Inlet Outlet Water Trap Drain Filter Element Baffles Filter with Water Trap Manual Control Filters remove contaminants, mainly condensed water from compressed air. Compressed air is conducted into the filter bowl and is rotated at high speed. Heavy particles of dirt and water particles are centrifuged onto the wall of the filter bowl and they remain there. Condensed water accumulates in the lower part of the filter bowl and is drained through the drain plug when the water reaches the maximum level mark. Fine particles are retained by the filter element through which the air has to flow.

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The pressure regulator is used To provide a constant supply pressure irrespective of the pressure fluctuations in the main line Pressure Regulator

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Valve Body Inlet Outlet Vent Spring and Adjusting screw Pressure operation Pressure Regulator with Relief Port

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The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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4 Bar 6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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4 Bar 6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port

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4 Bar 6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port If the pressure in the volume with the output port exceeds the set value, the diaphragm moves down first, shutting off the input port and then opening the exhaust ports to relieve the excess pressure.

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6 Bar 4.5 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port If the pressure in the volume with the output port exceeds the set value, the diaphragm moves down first, shutting off the input port and then opening the exhaust ports to relieve the excess pressure.

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6 Bar 4.5 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port If the pressure in the volume with the output port exceeds the set value, the diaphragm moves down first, shutting off the input port and then opening the exhaust ports to relieve the excess pressure.

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6 Bar The set screw permits adjustment of the initial tension in the diaphragm spring. The diaphragm lifts off the push rod off its seat. The push rod shuts off the exhaust port in the diaphragm. Operation of Pressure Regulator with Relief Port If the pressure in the volume with the output port exceeds the set value, the diaphragm moves down first, shutting off the input port and then opening the exhaust ports to relieve the excess pressure.

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Thank you for your attention