status report on research project on improving …
TRANSCRIPT
FRITZ ENGINEERING LABORATORY
HYDRAULICS DIVISION
Memorandum No o M=17
FoLo Report Noo 277-M-17
STATUS REPORT ON RESEARCH PROJECT
ON
IMPROVING DESIGN OF A HOPPER DREDGE PUMP
Prepared by
,JohnBo Herb fch
Prepared for
U.S. ARMY ENGINEER DISTRICT, PHILADELPHIA
Corps of Engineers
Philadelphia 29, Pennsylvania
Contract No.o DA=36=109=CIVENG=59=112
October 1960
Bethlehem, Pennsylvania
CON TEN T S
I. Introduction
II. Experimental Studies
A. General Comments
B. Characteristic Curves
Page
1
1
1
2
STATUS REPORT OF RESEARCH PROJECT
ON
IMPROVING DESIGN OF A HOPPER DREDGE PUMP
I. INTRODUCTION
The following- report summarizes the studies performed
during the month of September 1960, at the Hydraulics Division\-
of ,Fritz Engineering Laboratory, under terms of Contract No.
DA-36-109-CIVENG-.59-112. Earlier work was described in Status
R~pqrts:dated: December 19.58(l)oi~, February 19.59(2), April-. '".' -'
19.59(3), June 19.59(4), December 19.59(6), March 1960(9),
April 1960(10), May 1960(11), June 1960(12), July 1960
(13), August 1960( 1.5), September 1960( 16), and a Project
Report dated September 1959(.5).
II. EXPERIMENTAL STUDIES
A. General Comments
After completion of experimental tests on impeller
of Trial Design No.6, the volute casing was removed from
the test stand for inspection. Only very slight wear of the
pump impeller was observed, but noticeable wear was found on
the volute,casing, particularly around the circumference of
the flanges adjacent to the shrouds of the impeller •
.....'f'
oi~ Numbers in parenthesis are listed in REFERENCES
2
It was decided to send the volute casing for repairs,
and the casing will be bored out to receive a steel wearing
ring, which will be fabricated and brazed into the bore of
the volute casing. This will restore the original dimensions
and clearances. It is hoped to have the pump in operation
again by November 15, 1960.
B. Characteristic Curves
Some of the characteristic curves for the pump with
impellers No. 5 and 6 have been prepared and are presented
in the Appendix.
Figures A-I, A-2, and A-3, present the summary Brake
Horse Power and Head curves as a function of Flow for Impell
er TD-5 and the following concentrations: 1240, 1320, and
1380 grams/liter.
Figures A-4, A-5, and A-6 are the summary curves
for Impeller TD-6 and concentrations of 1240, 1320, and
1380 grams/liter.
Figures A-7 to A-II present the characteristic curves
for two impellers: TD-5 and TD-6 for various pump speeds~
Figure Speed (rpm)
A-7 1150
A-8 1300
A-9 1440
,(- A-1O 1550
A-II 16-50
Additional characteristic curves are being prepared
and will be submitted in the next Memorandum.
(1) ~erbich, J. B.
(2) Herbich, J. B.
(3) Iierblch" J. Bo
(4) He:rbich, J. B.
(5) Herbich, Jo Bo
(6) Herbich" J. Bo
(7) Iierblch, J. ~,Weiss, W. L.Wa.ddington, W0
REF E RE N C E SI
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGN OF A HOPPER DREDGE: .PUMPo Fritz Engineering Laboratory
Memorandum. No. M~l
Lehigh University,D~cember1958
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGl'l OF A HOPPER DREDGE··PUMP. Fritz Engineer~ng ~aboratory
Memorandum No. M"!"2 .Lehigh University, February 1959
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING'DESIGN OF A HOPPER'DREDGEPUMP. FritZlmgineering Laboratory
Memorandum. No ~M-3· ..Leqigh University, April 1959
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGN OF A HOPPER DREDGE .PUMP. Fritz Engineering Laboratory
Memorandum No. M-4 ' .,.Lehigh University, June 1959
CHARACTERISTICS OFA· MODEL DREDGE ,puMp', Froi tz Engineering Laboratory , ..
Project Report No. 31', .Lehigh University, September 1959
STATUS REPORT OF R~EARCH PROJECT, ON .•.... 'IMPROVING DESIGN OF A HOPPER ,DREDGEPUMP•. Fritz Engineering Labc;>ratory
Memorandum No. M-5Leqi~h University, Decembe~ 1959
STATUS REPORT OF RESEARCH PROJECT ON··IMPROVING'DEiSIGN OF A HOPPER DaEDGEPUMP. Fri~z Eng1neeringLaboratory
Memorandum. No. M-6 . ,Lehigh University, February :1.960
_. ':,. "-'
References (c ,.'
(8) Weiss,W. Lo
(9) ,Herbich" J.' Bo •
(10) Herbich, J. B.
(11) Herbich, Jo B.
(12) Herbich, J. BoWaddt.ngton~,.W·.·Mo . '
(13) Herblch, J. Bo. Long;, J" "L ~
(14) Iversen, H. W.Rolling, R, E.Carlson, J. ;T.'
SUGGESTED DESIGN CHANGES FOR ACENTRIFUGAL PUMP IMPELLERHANDLING DREDGED MUD
Fritz Engineering LaboratorySpecial ReportLehigh University, November, 1959
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING D]SIGN OF A HOPPER DREDGEPUMP. Fritz Engineering Laboratory
Memorandum No. M~8
Lehigh University,March 1960
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGN OF A HOPPER DREDGEPUMP. Fritz Engineering Laboratory
Memorandum No. M-9Lehigh University, April 1960
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING:1JE3IGN OF A HOPPER DREDGEPUMP. Fritz Engineering Laboratory
Memorandum No. M~12
Lehigh University, May 1960
ANALYSIS OF HIGH-SPEED MOVIES OF AMODEL pUMP;
Fritz Engineering LaboratoryMemorandum No. M-llLehigh University, June 1960
1
STATUS REPORT OF RESEARCH PROJECT, ONIMPROVING DESIGN OF A HOPPER DREDGE
, PUMP. Fritz Engineering LaboratoryMemorandum No. M-13Lehigh University, July 1960
VOLUTE PRESSURE DISTRIBUTION, RADIALFORCE ON THE IMPELLER, and VOLUTE MIX·ING LOSSES OF A RADIAL FLOW CENTRIFUGAL PUMP.
ASME Paper No. 59-Hyd-lO,Journal of Basic Engineering, 1959
\'
References
(IS) Herbich, J. B.Long, J.L.
(16) Herbich, J.B.
... ..~.
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGN OF A HOPPER DREDGEPUMP. Fritz Engineering ~aboratory
Memorandum No. M~14
Lehigh University, .August 1960
STATUS REPORT OF RESEARCH PROJECT ONIMPROVING DESIGN OF A HOPPER DREDGEPUMP. Fritz Engineering Laboratory
Memorandum No. M=lSLehigh University, September 1960
A P PEN D I X
Figures A-I - A-II
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Flow GPM
, '1
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Fig. A-I - MODEL DREDGE PUMP CHARACTERISTICSImpeller TD-S
Concentration: 1240 grams/liter
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Fig. A-2 - MODEL DREDGE PUMP CHARACTERISTICSImpeller TD-5
Concentration: 1320 gramS/liter
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1000
,
Fig. A-3 - MODEL DREDGE PUMP CHARACTERISTICS. - .Impeller TD-5
Concentration: 1380.grams/liter
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Fig. A-6 r MODEL DREDGE PUMP CHARACTERISTICSImpe 11er TD-6
Concentration: 1380 grams/liter
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Fig. A-7 - MODEL DREDGE PUMP CHARACTERISTICSImpellers TD-S and TD-6
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Fig.Flow GPM
A-9 - MODEL DREDGE PUMP CHARACTERISTICSImpellers TD-5 and TD-6
Concentration: 1374 gramS/literSpeed: 1440 rpm
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Fig. A-IO - MODEL DREDGE PUMP CHARACTERISTICS- - Irnpe ll~r~ rrp- 5. ?-n9-. 11>-6 _' .. _
Concentration: 1374 grams/literSpeed: 1550 rpm
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Flow GPM
Fig. A-ll - MODEL DREDGE PUMP CHARACTERISTICSImpellers TD-5 and TD-6
Concentration: 1374 grams/literSpeed: 1650 rpm