LAB 3 flow and pressure

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School

Centennial College *

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Course

226

Subject

Mechanical Engineering

Date

Oct 30, 2023

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pdf

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7

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Course Name: Robo 226 Section: 002 Lab No.: 3 Lab report must be handed in at the beginning of your next lab class. Any late submission will be deducted 10% each business day. Student Name: _ Kathrotiya_ ___ Parin (Last name) (First Name) Student No. 301305308_ Date: _ 2023-01-26 __ Instructor: Prof. Pavel Konstantinov Instructor’s Signature: ABSTRACT The primary reason for this experiment is to study the properties of pressure and flow in hydraulic parameters and examine the equipment attached with the main panel, after which learn how to attach a hosepipe to the flow meter's inlet as well as outlet and how to set pressure by
turning the knob to get the desired results. In addition to this, learn how certain components functioned by changing the inputs. Lab procedures: A. Deadhead the system and increased the pressure to 1,000 psi. B. Shut down the system. C. Attached a hose to the flow meter's inlet from one of the pressure ports on the connection header. D. Installed a hose to one of the return ports on the connecting header from the flow metre outlet. E. After the instructor has examined the circuit, we powered on the system and measured the system flow. F. The flow metre displayed 4 GPM flow rate while the pump is not operating. G. After that, located the flow control valve on the panel and attached a "Tee" to both of its ends. H. Attached a pressure gauge to each "tee." and considered them as PG1 and PG2 respectively. I. Next, unplugged the flow meter's outlet hose (FM1) from the return line and attached it to the flow control valve housing the pressure gauge (PG1). J. Located the FM2 second flow metre and connected its inlet to the flow control valve where the PG2 pressure gauge is attached. K. Installed the second flow meter's (FM2) outlet to the connecting header's return line.
L. Rotated the flow control valve's adjustment knob completely anticlockwise. (No limitations) M. Requested the instructor's help in checking the circuit. N. Then after, switched the system on. O. Observed and entered the initial flow metre and gauge data into the table. PG1, PG2, FM1, and FM2 (PGM). P. Noted all meters and gauges readings in the table. Q. Finally after all readings, changed pump flow to 2 gpm and repeated procedures. Equipment lists: • Electric motor. • Hydraulic pump. • Flow meters. • Pressure gauges. • Hoses. • Pressure relief valve. • System pressure gauge. • Flow control valve. • Reservoir Observation table FM 1 (GPM) FM 2 (GPM) PGM (PSI) PG 1 (PSI) PG 2 (PSI) 4 4.1 720 600 84 3.3 3.6 950 1075 52 2.4 2.5 998 1118 33 1 1 1050 1190 9
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FM 1 (GPM) FM 2 (GPM) PGM (PSI) PG 1 (PSI) PG 2 (PSI) 2 2 88 40 14 1.58 1.5 940 1040 9 1.20 1.18 1000 1150 7 0.6 0.5 1020 1205 6 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 600 1075 1118 1190 Pressure(PG1) vs Flow Rate (FM1) Pressure(PG1) vs Flow Rate (FM1) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 84 52 33 9 Pressure (PG2) vs Flow Rate (FM2) Pressure (PG2) vs Flow Rate (FM2)
0 0.5 1 1.5 2 2.5 650 1040 1150 1205 Pressure(PG1) vs Flow Rate (FM1) Pressure(PG1) vs Flow Rate (FM1) 0 0.5 1 1.5 2 2.5 14 9 7 Category 4 Pressure (PG2) vs Flow Rate (FM2) Pressure (PG2) vs Flow Rate (FM2)
Q & A: 1. What does a flow meter measure? • A flow metre monitors the volume of liquid or gas that passes through a pipeline in a specific amount of time. 2. Is a relief valve considered to be a normally passing or normally non passing valve? • A relief valve is co nsidered as a normally non-passing valve. 3. State the function of a hydraulic pump. • Hydraulic pumps use an electric motor to operate the pump, which transforms electrical energy into fluid pressure. 4. What determines pressure in a hydraulic circuit? • A pressure gauge is a tool for measuring and visualising fluid pressure in a system.
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5. What is occurring to the inside diameter of a Flow control valve (adjustable orifice) when the adjusting knob is turn clockwise? • The orifice size of many flow control valves varies, so rotating the adjustment in a anticlockwise direction will increase flow while doing it in a clockwise direction will close the valve, restricting the flow. CONCLUSION: Through this experiment on pressure and flow we conclude that the rate of flow remains same as throughout the whole process except some minor negligible errors, however the pressure indicated in pressure gauge 1 is higher as it located before the orifice and pressure gauge 2 is showing null indication, because it is placed after the orifice.

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