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Centrifugal Pump

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Centrifugal Pump Sec 10 503 05037 21 ... – PowerPoint PPT presentation

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Title: Centrifugal Pump


1
Centrifugal Pump
  • Sec 10
  • ????????? ?????????????? 503 05037 21
  • ????????? ?????????????? 503 05181 21
  • ?????????? ?????????????? 503 05203 21
  • ????????????? ?????????? 503 05627 21

2
Introduction
  • Pump ?????????????????????????
    ?????????????????????? ????????????? ???
    ???????????????????????????????????????
    ????????????? pump ???????????????????????????????
    ??????????????? Head ????????????????????????????
    ?? ?????????????? Pump ?????????? ????????
    Performance curve ?????????? Pump
    ????????????????? ??????????????????????????

3
Objective
  • ?????????????????????????? Volume flow rate (Q)
    ?????????? Mechanical power (Wm) , Head (Hp) ???
    Pump efficiency (?)
  • ??????????????????? Similarity Law
    ??????????????? Head, Mechanical power??? Flow
    rate ??????????????pump???Low speed
    ???????????????pump??? High Speed

4
Theoretical Background
5
Data Reduction Diagram
6
Experiment Conditions
  • Pump ?????????? Centrifugal pump??????????????????
  • ????????????????????????? ??????????????????
  • Inner diameter of pipe (D 36 mm)
  • Pressure Gauge ??????? Discharge(z2)
  • ??????????? Pressure Gauge ??????? Suction(z1)
    ???? 35 cm.
  • ???????????????????????????
  • Low speed ??? High speed
  • ???????????????????????? Flow rate
    ?????????????????????????

7
Assumptions
  • Steady flow
  • Neglect effect of friction
  • Incompressible fluid (? 1000 kg/m3)
  • Constant temperature
  • ??????? valve ?????????? flow rate
    ????????????????????? pump
  • Neglect effect of heat transfer
  • g9.81m/s2

8
Experiment Setup
9
Experiment Setup
10
Experimental Results
11
Experimental Results
12
Experimental Results
13
Experimental Results
14
Discussion
  • ????????????????????????? ?????????????????????
    ??????????????????
  • ???????????????? Flow rate ??? ???????????????????
    ?? Reservoir ??????? ???????? Pump
    ???????????????? ????????????????????
  • ??????????????????????????????????????????????????
    ??????
  • ??????????????????????????????????????? pressure
    ??? ???????? Pressure Gauge ??? Discharge
    ??????????? ?????????? ?????????????? Turbulence
    (????????????) ????????? ?????????????????????????
    ????????????

15
Discussion
  • ???????????????? High speed ??? Centrifugal pump
    ????????? ??????? Similarity Laws
    ??????????????????????????? ??????????????????????
    ??????????????????????????????? Bearing ???????

16
Conclusion
  • ???????????? Flow rate ??????? ??????? Power
    input ???????
  • ????? Flow rate ????? Pump head ??????????????
    ?????????????????????? Flow rate ?????????
  • ????????????????? Head pump ?????????????? High
    speed ?????????Similarity laws ???????????????????
    ????????? Low speed
  • ????? Flow rate ????????? Hydraulic power
    ????????????????????? ?????????????????????????
  • ??????????????? Pump ???????? Pump
    ??????????????????????????????????????????????
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