final ppt for project on thursday.pptx

7/27/2019 FINAL PPT FOR PROJECT ON THURSDAY.pptx

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FOR

BOSCH(REXROTH)

UNDER

TIFAC-CORE

Design & Development of pneumaticallyoperated automated doors

(for commercial vehicles)


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PROJECT MEMBERS

PROJECT GUIDE - MR. DINESH KUMAR SINGH(HEAD) MISS SHILPA SAMBHI(GUIDE)

MR. MAHESH SHARMA(SUB-GUIDE)

STUDENTS INVOLVING FROM ME BRANCH - Mayank Agarwal

Anup Kumar

Hemang Garg

Meenakshi Kumari

STUDENTS INVOLVING FROM EN BRANCH - Prateek Singh

Shourya Panwar


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SINGLE CENTRALRECIPROCATINGCOMPRESSOR

FRL UNIT WITH PRESSURE GAUGE(10 BAR), 1/4 BSP(F)

MANIFOLD 4 WAY BSP (F)

5/2 WAY DIRECTIONAL CONTROLVALVE , 24V DOUBLE SOLENOID

SAFETY VALVE(3/2 PUSH BUTTONDIRECTIONAL CONTROL VALVE)

DOUBLE ACTING CYLINDER

BORE: 25 mm, STROKE: 100 mm

1. PNEUMATIC BLOCK DIAGRAM


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SIGNALWIRE 1

SENSOR-1

SIGNALWIRE 2SENSOR-2

PL

C

5/2 WAY

DIRECTIONAL

CONTROL

VALVE , 24V

DOUBLE

SOLENOID

PNEUMATIC

CYLINDER

SAFETY

VALVE


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A) COMPRESSOR:

A compressor can compress air to the required pressures. It can convert the

mechanical energy from motors and engines into the potential energy in

compressed air. A single central compressor can supply various pneumaticcomponents with compressed air, which is transported through pipes from the

cylinder to the pneumatic components.

Compressor used in laboratories Pneumatic symbol ofa compressor


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B) FRL UNIT WITH PRESSURE GAUGE :

It is a pressure regulating device which is made up of the following

components 1. Filtercan remove impurities from compressed air before it is fed to the

pneumatic components.

2. Pressure regulator to stabilise the pressure and regulate the operation

of pneumatic components.

3. LubricatorTo provide lubrication for pneumatic components.

(b) Pneumatic symbols of the

pneumatic components within apressure regulating component(a) Pressure regulatingcomponent


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C) MANIFOLD:

A manifold valvecontrols the flow of gases and liquids in a manifold .

A manifold gas valve having a diaphragm valve and an on-off valvecontrolling gas flow there through to a main burner and a pressure

regulator valve therein controlling gas flow to a pilot burner.


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D) 5/2 WAY DIRECTIONAL CONTROL VALVE:

When a pressure pulse is input into the pressure control port P,the spool

will move to the left, connecting inlet Pand work passage B. Work

passage Awill then make a release of air through R1and R2. The

directional valves will remain in this operational position until signals of the

contrary are received. Therefore, this type of directional control valves is

said to have the function of memory.

(a) 5/2 directional control valve (b) Cross section (c)

Pneumatic symbol


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E) SAFETY VALVE (3/2 PUSH BUTTON TYPE) :

A safety valve is a valve mechanism whichautomatically releases a substance froma boiler, pressure vessel, or other system,when the pressure or temperature exceeds

preset limits.

ADVANTAGES:

Improved Safety.Reduced downtime.Reduce vibrations and press wear.

Dynamic self-monitoring with tamperproof internal air logic monitor.


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F) DOUBLE -ACTING CYLINDER:

In a double acting cylinder, air pressure is applied alternately to the

relative surface of the piston, producing a propelling force and a

retracting force . As the effective area of the piston is small, the thrustproduced during retraction is relatively weak. The impeccable tubes of

double acting cylinders are usually made of steel. The working surfaces

are also polished and coated with chromium to reduce friction.

Cross section of a double acting cylinder Double acting cylinder


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G) SENSORS :

Sensors are the artificially manufactured receptors which when

integrated in machines, devices or a system help them to react semi-

autonomously to specific states and to control the reactions.

The sensor type to be employed in automatic doors is sight sensor

which includes optical and visual sensor.

Features of Optex Vision Sensor -

High quality

Durable

High performance


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PRINCIPLES OF PNEUMATIC CONTROL

(a) Pneumatic circuit - A pneumatic circuit is formed by various

pneumatic components, such as cylinders, directional control valves, flowcontrol valves, etc. Pneumatic circuits have the following functions:

1. To control the injection and release of compressed air in the cylinders.

2. To use one valve to control another valve.

(b) Pneumatic circuit diagram (i) BASIC RULES -

3/2 directional control valve 3/2 directional control valve

(normally closed type) (normally closed type)


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Pneumatic operation signal pressure line

Basic principles of drawing pneumatic circuit diagrams

(ii) BASIC PRINCIPLES -

Pneumatic operation signal pressure lines should be drawn on one side of the

squares, while triangles are used to represent the direction of air flow.


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(c) Basic circuit of Double acting cylinder -

(i) Direct control (ii) Single control

Circuit diagram of a double acting

cylinder direct control circuit

Circuit that maintains the position of a

double acting cylinder


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Application of Pneumatic systems

Operation of a pneumatic transport system Pneumatic circuit diagram

of a pneumatic transport system

(a) In Transport system


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(b) In Vehicle door operation system

Operation of a pneumatic system that Pneumatic circuit diagram

controls the movement of vehicle doors


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Safety measures when using pneumatic control systems

Compressed air can cause serious damage to the human body if they enter the

body through ducts like the oral cavity or ears.

Never spray compressed air onto anyone.

Under high temperature, compressed air can pass through human skin.

Compressed air released from the exhaust contains particles and oil droplets, which

can cause damage to eyes.

Before switching on a compressed air supply unit, one should thoroughly inspectthe whole circuit to see if there are any loose parts, abnormal pressure or damaged

pipes.

A loose pipe may shake violently due to the high pressure built up inside it.

Therefore, each time before the system pressure is increased, thorough inspection

of the entire circuit is required to prevent accidents. As the force produced by pneumatic cylinders is relatively large, and the action is

usually very fast, we may suffer serious injuries if you get hit by a cylinder.

In case of a leakage, the compressed air supply unit should be turned off

immediately.


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2. PLC (PROGRAMMABLE LOGIC CONTROLLER)

A PLC is a special form of microprocessor-based controller that uses aprogrammable memory to store instructions and to implement functions

such as logic, sequencing, timing, counting and arithmetic in order tocontrol machines and processes.

The PLC consists of computer hardware which is programmed tosimulate the operation of individual logic and sequence elements thatmight be contained in a series of relays, timers, counters and other hard

wired components.


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ADVANTAGES OF PLC -

Programming the PLC is easier than wiring the relay control panel.

A PLC can be reprogrammed. On the other hand, conventional control

must be rewired and are often scrapped instead.

PLCs occupy less space then relay control panels.

Maintenance of the PLC is easier.

PLCs have greater flexibility.

The PLC can be interfaced to the plant computer systems more easily then

the relays.


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COMPONENTS OF PLC:

ProgrammingDevice

PROCESSOR

MEMORY

INTERFACE

Output

Input

POWER SUPPLY I/P Module

O/P Module


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The communications interface is used to receive and transmit data on

communication networks from or to other remote PLCs. It is concernedwith such actions as device verification, data acquisition, synchronisation

between user applications and connection management.

BASIC COMMUNICATION MODEL

SUPERVISORY SYSTEM

COMMUNICATION NETWORKS

PLC1 PLC2

MACHINE/

PLANT

MACHINE/

PLANT


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THANK YOU

final ppt for project on thursday.pptx

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