Load Sensing Hydraulic Systems

FLUIDSYS TRAINING CENTRE

You may download this article at: https://fluidsys.org/downloads/ ]

A conventional hydraulic system with a fixed-displacement pump provides a constant flow through the system. When the system develops the set pressure, the pump flow is bypassed through the associated pressure relief valve. As a consequence, the system generates tremendous amount of heat. Even when a variable-displacement pump is employed, the system produces considerable heat. A sophisticated solution to improve the efficiency is to add a load sensing feature to the system.

The hydraulic system with a load sensing feature provides only the flow and the pressure as required by the connected load. Controlling both the pressure and the flow allows for a significant reduction in losses, improvement of circuit efficiencies, and enhancement of the service life of the system. The principle of load sensing is widely used in mobile hydraulic systems, including tractor systems, trucks, and cranes. It is also…

View original post 1,155 more words

Typical Single Cylinder Pneumatic Circuits

For more information, please read any of the publications: Pneumatic Systems and Circuits -Basic Level (In the SI Units) Industrial Pneumatics -Basic Level (In the English Units) This blog provides the following self-explanatory basic pneumatic circuits with only a single cylinder. Direct control of a single acting cylinder Indirect control of a single acting cylinder... Continue Reading →

How to Develop Multiple-actuator Pneumatic Circuits Using the Shift Register Method?

Textbook on ‘Pneumatic Systems and Circuits -Advanced Level’ By Joji Parambath The textbook presents information on the classification, constructional features, working, and essential terms and definitions, sizing, and safety and maintenance aspects of hydraulic accumulators. The book uses the SI system of units. Please click on the image link to go to the Amazon.com Website... Continue Reading →

TUV Rheinland Certified Qualification – Professional in Pneumatics and Hydraulics – Advanced Level

Fluidsys Training Centre Pvt Ltd Bangalore, India 2021-22 To see our publications, please visit: jojiboks Fluidsys Training Centre, Bangalore offers an advanced-level course in the field of Pneumatics and Hydraulics. The systematic training offered by the training centre is mainly intended for Degree/Diploma holders in the Mechanical, Electrical, Electronics, and Computer Science branches. After successful... Continue Reading →

Hydraulic Filters

FLUIDSYS TRAINING CENTRE

[You may download this article at: https://fluidsys.org/downloads/ ]

The article explores the topic of hydraulic filters for educational use and is presented here to refresh your memory. Hope you are able to recall the constructional features, performance specifications, and location-based installation details of hydraulic filters quickly. Let us get down to the nitty-gritty of hydraulic filters…

Introduction

Modern high-pressure hydraulic systems with components built to closer tolerances are susceptible to many types of contamination. Contaminants can cause the premature wear of internal surfaces. They also promote leakage and clog the flow paths. Therefore, an efficient and correctly-sized filtration system should be an integral part of every hydraulic system to separate the particulate matter of a specified size or greater from the system fluid. They should be fitted at appropriate locations in the hydraulic circuit for the effective control of contamination.

Strainers and Filters

A filtration unit, such as a…

View original post 2,081 more words

Relay Controllers Vs PLC Controllers – An Insight into their Circuitry

For more, please read our publication 'Electro-Pneumatics and Automation' Electro-pneumatics and Automation The basic concepts of a relay control system and a PLC control system are highlighted in this article with the help of a circuit diagram. Assume that an electro-pneumatic system is used for obtaining an industrial work operation. The system consists of a... Continue Reading →

Hydraulic Reservoirs

The article provides a concise account of the constructional details of hydraulic reservoirs. As you are aware, a hydraulic reservoir is an essential part of a hydraulic power pack.  A complete range of 36 textbooks, in Paperback & Kindle eBooks Editions, on Pneumatics and Hydraulics, under Fluid Power Educational Series, authored by Joji Parambath has... Continue Reading →

Understanding Air Compressors – Part 3

 [Note: Part 1 of this article presents basics of air compressors. Part 2 presents the classification and the construction details of air compressors. Part 3 presents a brief about the sizing of air compressors.] Sizing Air Compressors Sizing an air compressor for an application requires a logical sequence of actions. The following steps highlight a... Continue Reading →

Understanding Air Compressors – Part 2

Design of Industrial Hydraulic Systems in the SI Units By Joji Parambath The book describes the design aspects of hydraulic systems systematically. It highlights the essential parameters and specifications of hydraulic components in SI units. Design Concepts in Industrial Hydraulic Systems in the English Units By Joji Parambath Please click on the image links to... Continue Reading →

Understanding Air Compressors – Part 1

[Note: Part 1 of this article presents basics of air compressors. Part 2 presents the classification and the construction details of air compressors. Part 3 presents a brief about the sizing of air compressors.] A power source in a pneumatic system generates and distributes compressed air to all of its actuators. A compressor converts mechanical... Continue Reading →

Configuring a Typical Pneumatic System

The schematic diagram of a typical pneumatic system is given in the accompanying figure. Basically the system is composed of a power source, control valves, and work elements. The power source can broadly be classified into: compressed air generation, primary air treatment, storage, air distribution, and secondary air treatment. A compressor is a device for... Continue Reading →

Know the Most Economical Pressure in Pneumatics

What is the Most Economical Pressure in Pneumatics? Pneumatic systems have been developed and progressed comparatively as a low-pressure system. Pneumatic air consuming devices such as cylinders and rotary actuators are designed for the maximum operating pressure of 8 to 10 bar [115 to 145 psi]. However, practical experience has shown that 6 bar [90... Continue Reading →

Hydraulic Fluid Contamination & its Control

Hydraulic fluids are subjected to various kinds of contamination (particles, water, air, compounds, and biological matters). Contaminants can affect the physical and chemical properties of fluids. If the contaminants are not monitored or controlled, the fluid is likely to be subjected to various kinds of failures. A complete range of 36 textbooks, in Paperback &... Continue Reading →

Hydraulic Fluids – Functions, Characteristics, & Categories

Modern hydraulic applications demand compact machines designed with tighter tolerances and that run at faster cycle times. They are designed to work with small amounts of fluids. They operate at higher pressures, temperatures, and speeds. Under these circumstances, fluids are subjected to severe stresses. Hydraulic Fluids By Joji Parambath The textbook presents information on the... Continue Reading →

The Essence of Programmable Logic Controllers (PLCs)

A programmable logic controller (PLC) is a modern device that can be used to control the work process in a machine or an appliance. The operations involved in the work process are carried out by some kind of actuators such as electric motors, pneumatic actuators, hydraulic actuators, etc., which are in turn controlled by final... Continue Reading →

How to Develop Multiple-actuator Pneumatic Circuits Using the Cascade Method?

Most of the practical pneumatic systems involve the use of multiple actuators (cylinders, semi-rotary actuators, etc) which when operating in specified sequences carry out the desired control tasks. Double-pilot directional control (DC) valves are used as final control elements to control the forward and return strokes of the actuators. Sensors are used for confirming the... Continue Reading →

Pressure Control Valves in Hydraulic Systems

The article looks at the basics of pressure control valves for educational use and is presented here to refresh your memory. Hope you are able to recall the functions, circuits, and applications of pressure control valves. Pressure control valves are used in hydraulic systems for obtaining pressure-related control functions.  Pressure control valves can be categorized... Continue Reading →

Hydraulic Filters

For more details, please read our publication: 'Hydraulic Filters: Construction, Installation Locations, and Specifications' Hydraulic Filters: Construction, Installation Locations, and Specifications The article explains the constructional features,  location-specific installation details, and performance specifications of hydraulic filters.  Introduction Modern high-pressure hydraulic systems with components built to closer tolerances are susceptible to many types of contamination. Contaminants... Continue Reading →

Create a website or blog at WordPress.com

Up ↑

%d bloggers like this: