The document summarizes the air brakes system used in railways. It begins by introducing the importance of braking systems for controlling vehicle movement. It then discusses how modern trains rely on George Westinghouse's fail-safe air brake system design. The rest of the document details the components and working of the railway air brake system, including the distributor valve, auxiliary reservoir, brake cylinder, and others. It explains the charging, application and release stages. Limitations include potential issues if brakes are applied before full recharging. The conclusion states air brakes are more efficient than older vacuum brakes.
It is intersecting topic in a mechanical engineering flied which will full fill the things relative to the air brake system and also doubt regarding the brake system in railways .
As we seen the brake system in rails in your day to day life.
It is intersecting topic in a mechanical engineering flied which will full fill the things relative to the air brake system and also doubt regarding the brake system in railways .
As we seen the brake system in rails in your day to day life.
Air brake system in indian railways.pptmshristi singh
Why vacuum brake system is replaced by air brake system in Railways and their working ,function of air brake components and the difference between the vacuum brake and air brake system.
I had done 1 month summer training on topic " AIR BRAKE SYSTEM USED IN LOCOMOTIVE " from LOCO workshop, LKO....students who are doing so....this file can help them to prepare project file...
Air braking in Heavy Commercial Vehicles (HCV)Deepak Kumar
A detailed presentation on the topic "Air braking in heavy commercial vehicles (HCVs)". The ppt contains working and technical details of Air Braking System. Main components like Air Compressor, Reservoir, Unloader Valve, Brake Valve, Brake Chamber, Quick Release Valve and Relay Valve has been explained in details in this ppt.
Air brake system in indian railways.pptmshristi singh
Why vacuum brake system is replaced by air brake system in Railways and their working ,function of air brake components and the difference between the vacuum brake and air brake system.
I had done 1 month summer training on topic " AIR BRAKE SYSTEM USED IN LOCOMOTIVE " from LOCO workshop, LKO....students who are doing so....this file can help them to prepare project file...
Air braking in Heavy Commercial Vehicles (HCV)Deepak Kumar
A detailed presentation on the topic "Air braking in heavy commercial vehicles (HCVs)". The ppt contains working and technical details of Air Braking System. Main components like Air Compressor, Reservoir, Unloader Valve, Brake Valve, Brake Chamber, Quick Release Valve and Relay Valve has been explained in details in this ppt.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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
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.
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/
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
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Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
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.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
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
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.
2. Introduction
The most vital factor in the running and control of
any vehicle whether it is a cycle. scooter, car. bus, or
train is the breaking system. In order slow down the
moving vehicle in a shorter possible time, the energy
of motion possessed by vehicle must be converted
in to other forms. During break application in any
vehicle the energy of motion is converted in to heat
This u might have noticed at the rim when you apply
brakes repeatedly at short intervals.
3. Literature Review
Modern trains rely upon a fail-safe air brake
system that is based upon a design patented
by George Westinghouseon March 5
4. Air brake system of Railway
Air brakes system :In air brake system compressed
air is used for operating the brake system. The
locomotive compressor charges the pipe
throughout the length of the train. It consists of
many parts such auxiliary reservoir, distributor
valve, isolating cock, angle cock, etc. Brake
Application takes place by dropping the brake
pressure in the brake pipe. For application of
brakes, driver moves the handle of A-9 valve in the
application position. By this movement the brake
pipe pressure is reduced which is sensed by
distributor valve to operate brake cylinder
5. (1). Pneumatic pressure in the brake cylinder
causes piston assembly (2) to move outward
thereby causing lever (3) to rotate about its
fulcrum (a) thus bringing brake block (4) to
come in contact with the wheel (5) through the
brake beam (6). Since lever (3) is hung on the
bogie frame through lever hangers, it will start
moving forward about fulcrum (b) after brake
block (4) has contacted wheel (5). This forward
motion of the lever (3) about fulcrum (b) will
cause pull rod (7) to move forward thereby
causing lever (8) to swing about fulcrum (c) and
hence resulting in contact of brake block (9)
against wheel (5) through brake beam (10).
6. Earlier vacuum
brake system was
used but as it got
certain
disadvantage this
system got
rejected such as
7. In air brake system there is two types of system
Twin pipe system
Single pipe system
8. Components
Distributor valve. It’s the heart of the system. BP pressure enters
into it and get stored in CR as CR pressure. It as common pipe
bracket so 3 pipe that is AR, BP, BC are connected to it. When BP
pressure decreases CR gets and it starts moving and the hollow
tube which connect to diaphragm gets lifted up. The tube has a seal
in AR chamber which gets open up and compressed air moves into
BC. When BP pressure is increased it balances CR which comes to
original position and excess air moves out from hollow tube to
atmosphere.
Auxiliary reservoir : An auxiliary reservoir of 200 liters is
provided on each wagon to store compressed air. It is charged to
6 Kg/cm2 through the feed pipe. The auxiliary reservoir is made
out of sheet metal. On both the ends of the reservoir, flanges are
provided for pipe connection. When BP pressure decreases AR
pressure moves in brake cylinder as BC pressure
9. Cut-Off Angle Cock :Cut off angle cocks are provided at the ends
of brake pipe / feed pipe on each wagon. These cocks are closed at
the time of uncoupling of wagons. The vent provided in the cock
facilitates easy uncoupling of hose coupling by venting the air
trapped in the hose coupling when the cock is closed. The handle
of angle cock is spring loaded having a self locking type of
arrangement to avoid any inadvertent movement from open to
close position or vice versa.
Hose Coupling :The hose couplings are provided to connect brake
pipeline & feed pipe line throughout the train. It consists of rubber
hose connected to coupling head and nipple by "Band it" type of
clamps. The nipple goes into the angle cock and the coupling
heads are coupled together. Rubber gasket is used in the coupling
head to make the joint leak proof . The End of the hose are painted
with green and white color, the green color indicates the brake
pipe and the white color indicates the feed pipe. The hose are
coupled by palm coupling throughout the train..
10. Dirt Collector :Dirt collector is provided at the
junction of the main brake pipe and branch pipe. This is
meant for removing dust from the air prior to entering
the distributor valve. This is achieved by centrifugal
action. Their is filter inside the dirt collector which
collects the dust particles and it is replaced at the time
of every POH. The sealing plate and the gasket is also
replaced if found in damage condition.
Isolating Cock Isolating cock without vent is provided
in the FP line of the twin pipe wagons. The isolating
cock is used to isolate the FP pressure to the Auxiliary
reservoir. when the handle is parallel to the body, it is
an open position for the cock the main difference
between the angle cock and IC is that IC is used to
isolate the pressure of certain component while AC is
used to isolate the pressure of the whole coach.
11. Brake Cylinder:On every coach fitted with air brake system two brake
cylinders are provided for actuating the brake rigging for the application
and release of brakes. During application of brakes the brake cylinder
develops mechanical brake power by outward movement of its piston
assembly after receiving air pressure from Auxiliary reservoir through
the distributor valve, This is transmitted to the brake shoes through a
combination of levers. During release action of brakes the compression
spring provided in the brake cylinder brings back the rigging to its
original position.
12. Bogie mounted air brake system
Coaches are fitted with twin pipe system which are connected to compressor located in the locomotive and the pipe 1)FP 2)BP
are running throughout the train. At the end of the coach the pipes are sealed with dummy plug. The compressed air generated by
compressor is stored in main reservoir(MP). FP pressure is 6 kg/cm^2 and BP pressure is 5 kg/cm^2. MR is of 10 kg and
auxiliary reservoir (AR) is of 200 litres. The air from MR moves into FP & BP. From FP it goes to dirt collector then isolating
cock (IC) and through check valve into AR. From BP it goes to dirt collector then to common pipe bracket. The air from AR also
moves into CPB. From CPB it moves into DV(distributor valve). AR pressure remain in the top chamber. Brake pipe pressure
enters the DV and goes into CR and becomes CR pressure (5 kg/cm^2). BP pressure and CR pressure are equalized as both are of
5 kg/cm^2 and the pressure are separated by diaphragm (rubber lining) which is connected to hollow stem.
13. When the brake is released the AR pressure moves out of it to
the atmosphere. When the brake cylinder pressure reaches 3.8
kg/cm^2 maximum brake is applied. And when BP pressure
reaches 4.8 kg/cm^2 the brake cylinder pressure is released
through the IC which is vented to atmosphere.The dirt collector
uses centrifugal force to separate the dirt. Due to this force the
air moves and anticlockwise and heavy particles(dirt particles)
get collected at the bottom which is drain out using drain plug. It
also has a filter in it. When driver applies brakes means by
venting BP pressure to atmosphere from driver’s brake valve. The
reduction of the brake pipe positions the DV in such a way that
the AR is connected to brake cylinder through automatic pressure
modification(APM) based on position of sensor arm of APM
device it gives an output of + 0.1 kg per centimeter square for
loaded position of wagon and 2.2 kg/cm^2 for empty position
bracking. The brakes are released by increasing BP and by
exhausting the BC pressure through DV. PEAVD is emergency
breaking which reduces BP to 0 and brakes are applied, an alarm
on each coach is fitted to recognize the chain pull in coach.
14. A. Charging stage :During this stage, brake pipe is charged to 5 kg/cm2pressure
and feed pipe is charged to 6 kg/cm2 pressure which in turn charges auxiliary
reservoir to 6 kg/cm2 pressure. At this stage, brake cylinder gets vented to
atmosphere through passage in Distributor valve.
B. Application Stage :For application of brakes, the pressure in brake pipe has to
be dropped. This is done by venting air from driver’s brake valve. Reduction in
brake pipe pressure positions the distributor valve in such a way that the control
reservoir gets disconnected from brake pipe and auxiliary reservoir gets
connected to brake cylinder. This results in increase in air pressure in brake
cylinder resulting in application of brakes. The magnitude of braking force is
proportional to reduction in brake pipe pressure
C. Release stage :For releasing brakes, the brake pipe is again charged to 5
kg/cm2 pressure by compressor through driver’s brake valve. This action
positions distributor valve in such a way that auxiliary reservoir gets isolated
from brake cylinder and brake cylinder is vented to atmosphere through
distributor valve and thus brakes are released.
15. LIMITATIONS :
If the brakes are applied before recharging has been completed, a larger brake
pipe reduction will be required in order to achieve the desired amount of
braking effort.
If the brake pipe pressure is too low due to an excessive no. of brake
applications, an emergency application will not produce a large enough
volume of air flow to trip the triple valves, leaving the engineer with no
means to stop the train.
Two pipe system is better than single pipe air brake system because this
additional enhancement adds the main reservoir pipe, which is continuously
charged with air directly from the locomotive's main reservoir. This
arrangement help to reduce the pressure loss problems and also reduces the
time required for the brakes to release, since the brake pipe only has to
recharge itself.
16. CONCLUSIONS:Vacuum brakes have extremely limited applications
because of longer longer to function and unsuitable for high speed trains.
Air brakes are efficient as compared to vacuum brakes; however they require
considerable stopping distance therefore cannot be used for emergency
braking.
Reference: www.reseachgate.com
www.wikipedia.com
www.seminarsonly.com
www.indianrailway.gov.in
www.jrtr.net