The Hydro-PneumaticSystem with Pressure - Assignment Example

INDUSTRIAL APPLICATIONS OF FLUID POWER Name: Tutor: Subject: Date: Task 1a: (LO 1: 1.1) i) 3/2 spring return operated by push button This spring enables the flow of pilot signal from the side of the 3/2s to the other side of the 5/2. It is usually actuated with the help of the pushbutton. The return spring enables the valve to return to its normal position. ii) 5/2 Pilot operated DCV It usually has five ports and two spool positions which enable it to isolate and also by pass a way for the fluid used in it. A solenoid valve is often used to facilitate actuation of this pilot. Iii) 5/3 Pilot operated spring return to centre (all ports closed) DCV It has five ports and three positions .its basic symbol is the rectangle where there is a drawing of the external connections from it. Internal connections for the different positions on the valve are also included (Ferziger, J.H., and Peric, M., 2012). iv) Dual Pressure Valve ( “&” function/gate) The valve is often switched through the (AND function) in cases where there is the application of signals to both inputs. In case pressures are applied to the two inputs simultaneously, and then the lower pressure will reach the output two. v) Shuttle Valve (“Or” function/gate) The general structure of the shuttle valve is a tube which consists of three openings. The openings are such that two are at the both ends of the valve and then one is in the middle of the shuttle valve. vi) Air service unit It consists of a pressure regulator which has a vent hole. The unit is usually compressed so as to drain manually. Pressure display is also available to display the pressure which is compressing the unit. vii) 5/2 Solenoid operated DCV It has a solenoid which keeps it in motion. There is also the presence of pneumatic piloting which is evident in both directions. Manual overrides are also available to correct the operations of the valve (Yang, H.Y. and Pan, M., 2015). viii) 3/2 P/O Spring Return DCV (Normally open & Normally closed) – 2 sketches required Open Closed ix) 3/2 spring return operated by roller ix) One way flow restrictor Task 1b Fluid power may either the use of a liquid which is usually oil or the use of compressed air. The choice of the fluid power is determined by the choice of technology used. Oil liquid is most suitable for the Hydraulics technology. On the other hand, compressed air is used in the pneumatics technology. Fluid power enables there system to produce a linear motion when used in the hydraulic or even the pneumatic technologies thus justifying it. Examples of systems which employ pneumatic fluid power are air compressors, dental drills, pneumatic bladder, air brakes and many others. The merit of these systems is that they are simple to design and even control making it suitable for using pneumatic fluid power. The examples of systems that employ hydraulics are turbines, pumps, and hydropower systems. These systems have the merit that they are used for generation and transmission of power for large use. The technical requirements of the pneumatic fluid power systems are that they require very little maintained. This is because they use gas which can be easily compressed thus avoiding the equipment used from damaging. The technical requirement for the hydraulic systems is that they should be reliable in usage in all their uses and also efficient in using energy. Task 1c (LO4: 4.3) The air filter will be used to filter the dirt and moisture from the system. The air compressor component will be used in increasing the air pressure within the system. It will also transfer the air which is compressed to the air receiver. The pressure regulator will regulate efficiently the supply of the air pressure in the system. The installation will be done by a fully trained expert. The compressed air and the vacuum systems are first installed. The cooling systems are also installed which are water pipework. The basic safety that I would put in place in the installation process would be the provision of respiratory air to the operators installing the system with reference of BS4275:1997 of the H $ S regulations. The maintenance requirement that would be performed would be checking the breathing air systems during the installation process. Task 1d (LO2: 2.1, 2.2) 1) Pneumatic accumulator/reservoir It is a storage reservoir for storing compressed air. This system stores energy. 2) Hydraulic reservoir They are used in holding fluid which is used in operating the hydraulic systems. 4) Fluid power pumps It is a pump driven by a mover such as a combustion engine .this pumps converts mechanical energy to fluid energy? 4) Fluid power motors Is an electrical motor which is used to convert mechanical into fluid energy .these motors moving the fluid power systems? ASSIGNMENT 2 Task 2a: (LO1: 1.2, LO3: 3.1 & M3, D2, D3) The operating sequence was derived with the help of the sequence valves. The sequence valves were arranged to increase the pressure build-up when a cylinder completes its individual stroke. The valve will, in turn, opening thus there will be flow to the other cylinder. Task 2b (LO3: 3.2 & M3, D2, D3) Task 2c (LO3: 3.3 & M3, D2, D3) source : Stanford, F.D et al(2015) Task 2d (LO3: 3.4 & M3, D2, D3) Task 2e (LO 1.3 & M1, D1) Characteristics of dual speed reversible hydraulic winch In this case, the winches are supplied with hydraulic motors. The winch used is hydraulically driven. A hydraulic cylinder is also available in the system. REFERENCES Ferziger, J.H. and Peric, M., 2012. Computational methods for fluid dynamics. Springer Science & Business Media. Stanford, F.D., Knuth, B.E. and Chan, K.L.G., Actuant Corporation, 2014. Hydro-pneumatic system with pressure limiting valve. U.S. Patent 8,689,823. Yang, H.Y. and Pan, M., 2015. Engineering research in fluid power: a review. Journal of Zhejiang University SCIENCE A, 16(6), pp.427-442. Read More