The document discusses various components used in pneumatic systems including logic gates, valves, and FRL units. It begins with explanations of shuttle valves and twin pressure/dual pressure valves that can function as OR and AND logic gates respectively. Various valves are then discussed such as time delay valves, quick exhaust valves, and their applications. Speed control methods and the stick-slip effect in pneumatics are also covered. Finally, the construction and working of the main components of an FRL (filter, regulator, lubricator) unit are explained in detail with diagrams.
Control of a single-acting and double-acting cylinder, regeneration, motor braking, speed control, synchronisation, fail safe, two handed, application of counterbalance, sequence, unloading, pressure reducing, pilot operated check valve
Hydraulic Pumps, Motors and Actuators:
Construction, working principle and operation of rotary & reciprocating pumps like Gear, Vane, Generated-Rotor, Screw, Axial Piston, Radial Piston, Pump characteristics, Linear and Rotary Actuators, Hydrostatic Transmission Systems. Selection of components for applications
Hydraulic Valves and Hydraulic System AccessoriesRAHUL THAKER
Hydraulic Valves and Hydraulic System Accessories:
Direction control valves,Pressure control valves, Flow control valves, Non-return valves, Reservoirs,Accumulators, Heating & cooling devices, Hoses. Selection of valves for circuits.
Control of a single-acting and double-acting cylinder, regeneration, motor braking, speed control, synchronisation, fail safe, two handed, application of counterbalance, sequence, unloading, pressure reducing, pilot operated check valve
Hydraulic Pumps, Motors and Actuators:
Construction, working principle and operation of rotary & reciprocating pumps like Gear, Vane, Generated-Rotor, Screw, Axial Piston, Radial Piston, Pump characteristics, Linear and Rotary Actuators, Hydrostatic Transmission Systems. Selection of components for applications
Hydraulic Valves and Hydraulic System AccessoriesRAHUL THAKER
Hydraulic Valves and Hydraulic System Accessories:
Direction control valves,Pressure control valves, Flow control valves, Non-return valves, Reservoirs,Accumulators, Heating & cooling devices, Hoses. Selection of valves for circuits.
Unit 4- balancing of rotating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Hydraulic Filters are used to keep the contaminants away from the system and avoid mechanical failures. Fleetguard products cater to high, low and medium pressure hydraulic systems to protect industrial machinery and equipments.
For more details visit: https://www.fleetguard-filtrum.com/products/hydraulic-filtration/
Unit-6: Gyroscope, of Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Hydraulics is a branch of science which deals with hydraulic fluid. It is used in places where cleanliness is not a priority but requires huge power to perform tasks.
application:
1. Industrial: Plastic processing machineries, steel making and primary metal extraction applications, automated production lines, machine tool industries, paper industries, loaders, crushes, textile machineries, R & D equipment and robotic systems etc.
2 Mobile hydraulics: Tractors, irrigation system, earthmoving equipment, material handling equipment, commercial vehicles, tunnel boring equipment, rail equipment, building and construction machineries and drilling rigs etc.
3 Automobiles: It is used in the systems like breaks, shock absorbers, steering system, wind shield, lift and cleaning etc.
4 Marine applications: It mostly covers ocean going vessels, fishing boats and navel equipment.
5 Aerospace equipment: There are equipment and systems used for rudder control, landing gear, breaks, flight control and transmission etc. which are used in airplanes, rockets and spaceships.
Unit 4- balancing of rotating masses, Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Hydraulic Filters are used to keep the contaminants away from the system and avoid mechanical failures. Fleetguard products cater to high, low and medium pressure hydraulic systems to protect industrial machinery and equipments.
For more details visit: https://www.fleetguard-filtrum.com/products/hydraulic-filtration/
Unit-6: Gyroscope, of Dynamics of machines of VTU Syllabus prepared by Hareesha N Gowda, Asst. Prof, Dayananda Sagar College of Engg, Blore. Please write to hareeshang@gmail.com for suggestions and criticisms.
Hydraulics is a branch of science which deals with hydraulic fluid. It is used in places where cleanliness is not a priority but requires huge power to perform tasks.
application:
1. Industrial: Plastic processing machineries, steel making and primary metal extraction applications, automated production lines, machine tool industries, paper industries, loaders, crushes, textile machineries, R & D equipment and robotic systems etc.
2 Mobile hydraulics: Tractors, irrigation system, earthmoving equipment, material handling equipment, commercial vehicles, tunnel boring equipment, rail equipment, building and construction machineries and drilling rigs etc.
3 Automobiles: It is used in the systems like breaks, shock absorbers, steering system, wind shield, lift and cleaning etc.
4 Marine applications: It mostly covers ocean going vessels, fishing boats and navel equipment.
5 Aerospace equipment: There are equipment and systems used for rudder control, landing gear, breaks, flight control and transmission etc. which are used in airplanes, rockets and spaceships.
Properties of air – Perfect Gas Laws – Compressor – Filters, Regulator, Lubricator, Muffler, Air
control Valves, Quick Exhaust Valves, Pneumatic actuators, Design of Pneumatic circuit – Cascade method – Electro Pneumatic System – Elements – Ladder diagram – Problems,
Introduction to fluidics and pneumatic logic
This document consists of information regarding the concepts of a complete Pneumatic System and its different elements which are:-
a. Pneumatic Power Generating Elements - Pumps & Air Compressors
b. Pneumatic Power Controlling Elements - Valves
c. Pneumatic Power Utilising Elements - Cylinders
d. Pneumatic Power Conveying Elements - Hoses, Pipes, and Fittings
e. Pneumatic Accessories - Air Receiver Tank, Air Dryer, and FRL unit
with proper working and diagrams which also includes the Pneumatic circuit diagram used in industries.
Module 5 hydraulics and pneumatics Actuation systemstaruian
Pneumatic and hydraulic actuation systems: Pneumatic and hydraulic systems actuating systems.
Classifications of Valves: Pressure relief valves, Pressure regulating / reducing valves
Cylinders and rotary actuators.
DCV & FCV: Principle & construction details.
Types of sliding spool valve & solenoid operated.
Symbols of hydraulic elements, components of hydraulic system, functions of various units of hydraulic system.
Design of simple hydraulic circuits for various applications
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Pneumatics: Shuttle, Twin pressure, Quick Exhaust, Time Delay, FRL
1. Hydraulics & Pneumatics
Unit 5 : Pneumatics
Question & Answers
by
Abhishek D. Patange
Assistant Professor
College of Engineering Pune
2. Question 1:
• Explain construction and working of Shuttle valve
with schematic diagram used in pneumatics.
• Also explain electrical equivalent circuit, truth
table, Boolean expression, application for shuttle
valve as OR logic gate.
Answer is given on next page:
4. Working:
A shuttle valve allows two alternate flow sources to be connected in a
one-branch circuit. The valve has two inlets P1 and P2 and one outlet A.
Outlet A receives flow from an inlet that is at a higher pressure. Figure
1.5 shows the operation of a shuttle valve. If the pressure at P1 is
greater than that at P2, the ball slides to the right and allows P1 to send
flow to outlet A. If the pressure at P2 is greater than that at P1, the ball
slides to the left and P2 supplies flow to outlet A .
Application:
One application for a shuttle valve is to have a primary pump inlet P1
and a secondary pump inlet P2 connected to the system outlet A The
secondary pump acts as a backup, supplying flow to the system if the
primary pump loses pressure. A shuttle valve is called an “OR” valve
because receiving a pressure input signal from either P1 or P2 causes a
pressure output signal to be sent to A
Shuttle Valves (OR Gate)
5. Shuttle valve as OR Gate
A+B
OR Electric Circuit OR Truth Table
Boolean expression
Application
7. Question 2:
• Explain construction and working of Twin
pressure/dual pressure valve with schematic
diagram used in pneumatics.
• Also explain electrical equivalent circuit, truth
table, Boolean expression, application for Twin
pressure/dual pressure valve as AND logic gate.
Answer is given on next page:
9. Working:
This valve is the pneumatic AND valve. It is also derivate of Non Return
Valve. A two pressure valve requires two pressurized inputs to allow an
output from itself. The cross sectional views of two pressure valve in two
positions are given in figure. As shown in the figure, this valve has two
inputs 1 and 2 and one output. If the compressed air is applied to either
1 or input 2, the spool moves to block the flow, and no signal appears at
output. If signals are applied to both the inputs 1 and 2, the compressed
air flows through the valve, and the signal appears at output.
Application:
These valve types are commonly associated but not limited to safety
circuits, for example a two push button operation system whereby an
operator is required to use both hands to activate two push buttons, this
would ensure the operators hands are out of reach of any hazardous
operations.
Twin pressure/dual pressure valve (AND Gate)
13. Question 3:
• Explain construction and working of time delay
valve with schematic diagram used in
pneumatics.
• Explain the application with circuit.
Answer is given on next page:
14. • It is used wherever delay of operation is required
Time delay valve
18. Circuit of time
delay valve
• In the circuit the
time delay
valve, holds the
cylinder in the
extended
position for the
pre determined
time, set on the
delay valve 1.4
1.21.4
19. Question 4:
• Explain construction and working of quick exhaust
valve with schematic diagram used in
pneumatics.
• Explain the application with circuit.
Answer is given on next page:
20. Quick Exhaust Valve
• These valves help mainly the DC valves to quickly
exhaust
• They are used for quick operation of actuators
Air enters from
main line to
cylinder
Air quickly exhausts to
atmosphere
21. A fast exhaust valve (Figure 4.26) is used to vent cylinders quickly. It is primarily
used with spring return (single- acting) pneumatic cylinders. The device shown in
Figure 4.26a consists of a movable disc which allows port A to be connected to
pressure port P or large exhaust port R. It acts like, and has the same symbol as,
a shuttle valve. A typical application is shown in Figure 4.26b.
Fast exhaust valves are usually mounted local to, or directly onto, cylinders and
speed up response by avoiding any delay from return pipes and control valves.
They also permit simpler control valves to be used.
23. Question 6:
• Explain Speed control methods in pneumatics
and compare speed control in hydraulics and
pneumatics.
Answer is given on next page:
24. • It is always necessary to reduce the speed of cylinder from
maximum speed based on selected size of final control
valve to the nominal speed depending on the application.
• Speed control of Pneumatic Cylinders can be conveniently
achieved by regulating the flow rate supply or exhaust air.
• The volume flow rate of air can be controlled by using flow
control valves which can be either Two way flow control
valve or One way flow control valve.
• Meter In [throttling in]
• Meter Out [throttling out]
Speed control methods in pneumatics
25. 1V1: Meter In for controlling speed of extension
1V2: Meter In for controlling speed of retraction
2V1: Meter Out for controlling speed of retraction
2V2: Meter Out for controlling speed of extension
Speed control methods in pneumatics
26. Important: [Comparison of speed control in Hyd & Pne]
Stick Slip Effect:
• There is a limitation is achieving smooth movement of
cylinder with low speed setting of flow control valve. This
results in jerky motion of piston which is called as the stick
slip effect.
• When the flow control valve is set for low flow rates, it
takes considerable time for the supply air to build up to the
required pressure [corresponding to the load] behind the
piston. Every time this pressure is reached, the piston jerks
in the direction of motion which results in increase in
cylinder volume. This further results in drop in pressure in
the cylinder and the piston momentarily halts until the
pressure build up takes place. This intermittent motion is
called as the Stick Slip Effect.
28. Question 6:
• Explain construction and working of FRL unit with
schematic diagram used in pneumatics. Draw
detailed symbol.
• Explain Filter with neat sketch.
• Explain Regulator with neat sketch.
• Explain Lubricator with neat sketch.
Answer is given on next page:
31. Filter working
• The construction of typical cartridge type filter along with graphical
symbols is shown in Figure.
• It consists of filter cartridge, Deflector, bowl, water drain valve. Filter
bowl is usually made of plastic and transparent.
• For pressure more than 10 bar, bowl may be made of brass.
• Air enters the inlet port of the air filter through angled louvers.
• This causes the air to spin as it enters the bowl.
• The centrifugal action of the rotating air causes the larger pieces of dirt
and water particles to be thrown against the inner wall of the filter
bowl.
• These contaminants then flow down into the bottom of the filter bowl.
• A baffle prevents turbulent air from splashing water on to the filter
element. The air, which has been pre-cleaned in this way, then passes
through the filter element, where the fine dirt particles are filtered out.
• The size of the dirt particles which can be filtered out depends on
mesh size of filter element (usually 5-50 microns).
• The compressed air then exits through the outer port. The pressure
difference between inlet and outlet will indicate the degree to which
the filter element is clogged.
33. Regulator working
• A Relieving type pressure regulator is shown in Figure,
• Outlet pressure is sensed by a diaphragm preloaded with a
adjustable pressure setting spring.
• The compressed air, which flows through a controlled cross section at
the valve seat, acts on the other side of the diaphragm.
• The diaphragm has large surface area exposed to secondary (outlet)
pressure and is quite sensitive to its fluctuations.
• The movement of diaphragm regulates the pressure.
If the outlet pressure is low
whenever the more compressed air is consumed on secondary side or
load side, then load pressure reduces. Therefore less force acts on
diaphragm. The opposing higher spring force pushes the diaphragm in
such a way as to move the valve disc more and permitting more air to
flow to secondary side and thus increasing the pressure again.
If the outlet pressure is high
whenever the less compressed air is consumed on secondary side or
load side, then load pressure increases. Therefore more force acts on
diaphragm. The opposing higher spring force pulls down the diaphragm
in such a way as to move the valve disc less and permitting air to flow to
vent hole and thus decreasing the pressure again
35. • The operation is similar to the principle of the lubricator.
Schematic diagram is shown in Figure 1.6.
• As air enters the lubricator its velocity is increased by a venture ring.
• The pressure at the venture ring will be lower than the atmospheric
pressure and the pressure on the oil is atmospheric.
• Due to this pressure difference between the upper chamber and lower
chamber, oil will be drawn up in a riser tube.
• Oil droplets mix with the incoming air and form a fine mist.
• The needle valve is used adjust the pressure differential between
across the oil jet and hence the oil flow rate.
• The air – oil mixture is forced to swirl as it leaves the central cylinder so
that large particles of oil is goes back to bowl and only the mist goes to
outlet.
• The lubricator starts to operate only when there is sufficient flow of air.
• If too little air is drawn off, the flow velocity at the nozzle is not sufficient
to produce an adequate vacuum and hence to draw oil out of the
vessel.
• Only thin mineral oil may be used in pneumatic system lubricator.
Lubricator working
36. Other important questions:
• Contamination control: Contamination, sources of
contamination [Unit 4]
• Small Numerical on strainer, filters, filter ratings. [Unit 4]
• FRL unit [Unit 5]
• Numerical on accumulators [Unit 2]
• Types of accumulators/symbols/working [Unit 2]
• Accumulator applications/functions/circuits [Unit 2]
• Typical Design numerical for 16 marks on [unit 6]