Hydraulic motor uses fluid energy and converts it to mechanical movement of the. Oilgear variabledisplacement, axialpiston pumps thrive on low viscosity fluids. State the differences between laminar and turbulent flows. Spend time on studying, not for searching material to study. Nptel mechanical mechatronics and manufacturing automation.
Lack of maintenance of hydraulic systems is the leading cause of component and system failure yet most maintenance personnel dont understand proper maintenance techniques of a hydraulic system. Even in irrigation sector, not only in hydropower sector. Fundamentals of industrial oil hydraulics and pneumatics. But the quantity of hydraulic fluid being pumped inside the container is increasing continuously. A centrifugal pump is a rotodynamic pump that uses a rotating impeller to increase the pressure and flowrate of a fluid. The hydraulic pressure is directed to a hydraulic generator motor coupled to an electrical generator. Mobile hydraulic systems move on wheels or tracks, for example, unlike stationary hydraulic systems which remain firmly fixed in one position. This portable document format \ pdf \ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Glutton pumps can be driven by air, hydraulic, or electric motors. What is the difference between rotational and irrotational flow. The choice of pump for a given application depends largely on how the pump headflow characteristics match the requirement of the system downstream of the pump. Now we shall consider all three types of basic units this means that we shall consider vane type, gear type and piston type. What is the difference between uniform and non uniform flow. Hydraulic machinery made easy gate handwritten notes.
Hydraulic pumps are manufactured depending on different functional and hydraulic system requirements, such as operating medium, required range of pressure, type of drive, etc. The pump size must conform to the flow rate, pressure, speed, suction conditons etc. Maiti,department of mechanical engineering,iit kharagpur. Their system of operation is very similar to that of hydraulic pumps. The difference lies on one hand in the principle of transporting the liquid and on the other hand in the pumping characteristic. Arup kumar sarma, department of civil engineering,iit guwahati. Mohanty,department of mechanical engineering,iit kharagpur. Explain what a cam is, how it is used, and the typical types of cams. Types of open channel flow, resistance relationships in open. Hydraulic power unit the hydraulic power unit consist of pump, filter, reservoir, pressure gauge, pressure relief valve, electric motor, shutoff valve, pipe and pipe fittings. Dec 01, 2016 a complete lecture note on hydraulics pipe flow and open channel flow by dr kn dulal pdf part i tutorial solutions. Design and construction of a hydraulic ram pum shuaibu n. Such losses increase with the velocity of flow, and therefore the discharge flow rate q. A pump draws water from a tank and delivers it to another with the surface 8 m above that of the lower tank.
A large range of design principles and configurations exists behind hydraulic pumps. If the actual pump flow at 1800rpm and rated pressure is 0. The volume of the container is fixed and cannot be changed. The rotor shaft of an electrical power generator, placed in a wind or water current whereby the kinetic energy causes the rotor shaft to rotate, turns a hydraulic pump generating a hydraulic pressure. The whole assembly is submerged in the fluid to be pumped. Introduction to fluid machines and compressible flow by prof. In order for the obvious to be obvious, the fundamental laws. Fundamentals of industrial oil hydraulics and pneumatics by. It is called positive displacement reciprocating pump.
Dulal pdf computer programming to solve some problems on hydraulics dr. Symbols including fundamentals of fluid flow, fluids etc. In this power unit pump is driven by electric motor, oil rushes from reservoir via filter and deliver at higher pressure at its outlet. In any troubleshooting situation, no matter how simple or complex the hydraulic system, always start with the basics. What are the difference between pipe flow and free surface flow. Mod01 lec15 characteristics of a centrifugal pump youtube. The pump application may limit the access of personnel for a thorough visual pump inspection, so that under these conditions, the use of nonintrusive sensors can replace humans for detecting pump failure.
Thus, it can be said hydraulic pump hydraulic power unit is the heart. The hydraulic pump pumps the fluid into the accumulator, which is nothing but a sealed container. Sep 10, 2016 in this lesson well examine fixed and variable displacement pumps commonly gear, vane, and piston used to drive hydraulic systems as well as discuss volumetric efficiency, pressure compensated. It is a circuit that uses a highpressure, lowflow pump in conjunction with a lowpressure, highflow pump. Basic features of some hydraulic pumps and motors nptel. Standard hydraulic power units power packages energysaving hydraulic units and controllers standard hydraulic power units ac servo motor driven hydraulic pump control system energysaving control system for hydraulic units energysaving controller equipped with the variable displacement vane pump equipped with the variable. The goal of this site is presently to help the undergraduates pursuing b. Fundamentals of fluid mechanics chapter 12 pumps and turbines jyhcherng shieh department of bioindustrial mechatronics engineering national taiwan university. The energy transferred from the pump to the fluid appears as the pressure and velocity of the fluid. Hydraulics nptel online videos, courses iit video lectures. Som,department of mechanical engineering,iit kharagpur.
The basic foundation to perform proper maintenance on a hydraulic system has two areas of concern. Glutton pump the generic name of the pump described in this module is a plunger pump and the trade name. Norton, design of machinery introduction to cam design. In this lesson well examine fixed and variable displacement pumps commonly gear, vane, and piston used to drive hydraulic systems as well as discuss volumetric efficiency, pressure compensated. If you are a home owner, find out which of your uses for water is the biggest consumer. Hydraulics trouble shooting guide advanced fluid systems. If pump flow is totally blocked, sudden failure of the pump or other component will occur. Introduction to fluid machinery turbines, pumps, blowers. What is the difference between steady and unsteady flow. Hydraulic pump means is a hydraulic power unit capable of converting mechanical energy in hydraulic pressure. The length of the pipe from the source to pump site called the drains pipe.
The main advantage of this type of pump is that it prevents pump cavitation, a problem associated with a high elevation difference between pump and the fluid surface. Hydraulic circuit design and analysis a hydraulic circuit is a group of components such as pumps, actuators, and control valves so arranged that they will perform a useful task. Pump converts mechanical energy provided by prime mover to fluid energy. As the gears in the pump rotate, suction is created at the inlet port of the pump. Hydraulic pump motor division hydraulic flow is developed as the pump rotating group is driven by a prime mover hydraulic pump basics fluid is forced out of pump at the pump outlet a partial vacuum is created at the pump inlet and atmospheric pressure forces fluid into pump from the reservoir. At graco you will hear the plunger pump commonly referred to by its trade name, so for the purposes of this module we will use the trade name glutton when referring to the plunger pump. Hydraulic machinery made easy gate handwritten notes download pdf. Introduction to fluid machinery turbines, pumps, blowers and. Design and construction of a hydraulic ram pump from leonardo. Based on the construction, hydrostatic pumps are classified. Fundamentals of industrial oil hydraulics and pneumatics by prof. Driven by the motor, providing flow and pressure of the hydraulic actuator action desired. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The power p of any rotary hydraulic pump depends upon the density.
If control components are not properly selected, the entire system will fail to deliver the required output. Mohammed the difference in the height between the pump site and the paint of storage or use life. There are several types of hydraulic pumps, gear pumps, vane pumps. Generally spoken, the pump is a device that conveys a certain volume of a specific liquid from point a to point b within a unit of. Pumps which may be vane, gear, or piston types are used in hydraulic systems to produce sufficient flow to obtain the speed required from cylinders or motors. Control components in hydraulic system one of the most important functions in any fluid power system is control. Hydraulic turbines pelton wheel, francis turbine and kaplan turbine. So the pressure of the hydraulic fluid inside the container starts to increase. It is a hydraulic machine which converts mechanical energy into hydraulic energy. The steps to follow to select a centrifugal pump are. Evaluate the performance of hydraulic circuits using various hydraulic elements.
Mechanical fundamentals of industrial oil hydraulics and. Condensed table causes of trouble and their effects in hydraulic installations source of trouble, effects 1 mechanical drive 2 suction line 3 pump 4 pressure line 5 return line 6 pressure valves a excessive noises 1. Glutton pumps come in an option of electropolished stainless steel for. Hydraulic friction losses occurring as fluid flows through the impeller and the pumps volute. Electrical signals are used to activate the valves in the hydraulic installation.
Calculate the speed, pressure and loadcarrying capacity of hydraulic circuits. The first step on the way to the optimal pump is the selection between a centrifugal pump or a positive displacement pump. Pumps and pumping system bureau of energy efficiency 118 figure 6. The development in materials and pump construction have led to an increased life time and better reliability of the products. In many cases, this will be the bathtub which requires approximately 10 gpm 0. Elements for the control of energy and other control in fluid power system are generally called valves. This speed oil flow can be increased or decreased by using a pump of higher or. When analyzing or designing a hydraulic circuit, the following three important considerations must be taken into account. Hydraulics and hydraulic machinery notes pdf hhm notes pdf. Here you can download the free lecture notes of hydraulics and hydraulic machinery notes pdf hhm notes pdf materials with multiple file linksthe hydraulics and hydraulic machinery pdf notes hhm pdf notes.
Submersible pump a submersible pump is a pump which has a hermetically sealed motor closecoupled to the pump body. Centrifugal pumps are the most common type of pump used to move liquids through a piping system. A gear pump has a 75mm outside diameter, a 50mm inside. A characteristic feature of mobile hydraulics is that the valves are frequently manually operated. Unlike the competition, our pumps are not limited by bearing life. Understanding surges also called water hammer or hydraulic transients is important in determining the best way to prevent them. A typical application is a sheet metal punch press in which the hydraulic cylinder must extend rapidly over a great.
To size and select a centrifugal pump, first determine the flow rate. Courses principle of hydraulic machines and system design. As a manufacturer and supplier of centrifugal pumps and positive displacement pumps we offer the optimum for both applications. In addition, hydraulic characteristics of two nonclog pumps.
Essentially, pneumatic pumps use air in the same way that hydraulic pumps use. With a proper valve arrangement and pipe conduit connection at blocked end of the cylinder it is possible to. Nptel syllabus fluid power control web course course outline fluid power plays an important role in industry. Motor with hydraulic pump control panel valve manifold cylinder the hydraulic press is controlled via the electrical control panel. The electrohydraulic press is used to form rectangular troughs. Hydraulic systems 9 toro university technical training understanding the basic hydraulic systems and components can be of great value when troubleshooting and. Centrifugal pump monitoring and determination of pump. The designed pump delivers 100 ls flow rate against a head of 24 m. Text headings in each module are linked to and f\ rom the table of contents for that module. Lecture 6 energy losses in hydraulic systems learning objectives upon completion of this chapter, the student should be able to. The glutton pump is virtually leakfree because of the bellows design. Glutton pump the generic name of the pump described in this module is a plunger pump and the trade name is glutton. The modules listed in the overview are linked to the corresponding pages.
Pump headflow curves are typically given for clear water. Design procedure and the important points that differ nonclog pump design from standard centrifugal pump designs are given. So this means that or in other words we should say, the pump in hydrostatic units does not pump the pressure. In this lesson well examine fixed and variable displacement pumps commonly gear, vane, and piston used to drive hydraulic systems as well as. In the case of stationary hydraulics, however, mainly solenoid valves are used. Consequently, not every pump can fully meet all sets of requirements to an optimum. Lean about about the concept of hydraulic pumps, how theyre constructed, and the working. The hydraulic pressure causes the hydraulic motor to turn which spins the generator. You can find most of the materialsnotes related to civil engineering. Common causes of surge events include the following conditions. The basics behind a fluid or hydraulic pump is a machine which transfers the energy from its moving parts to the fluid oil, water, hightemperature air, and even electrons passing through the machine. Control pane motor with hydraulic pump valve manifold actuator. In order for the obvious to be obvious, the fundamental laws of hydraulics must be kept in mind.
This portable document format \pdf\ file contains bookmarks, thumbnails, and hyperlinks to help you navigate through the document. Hydraulic pumpmotor division hydraulic flow is developed as the pump rotating group is driven by a prime mover hydraulic pump basics fluid is forced out of pump at the pump outlet a partial vacuum is created at the pump inlet and atmospheric pressure forces fluid into pump from the reservoir. Hydraulic pumps parts and components dta hydraulics. Surges are caused by one or more events that change the velocity of the water in the pipe. Nptel syllabus advanced hydraulics web course course outline this course introduces the fundamental concepts, advanced principles and application of hydraulic analysis and design to the undergraduate students of civil engineering.
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