Bagge, G.

Basco, D.

Herbich, J. B.

Miller, R. E.

English

Lehigh University: Lehigh Preserve

Lehigh University
Lehigh Preserve
Fritz Laboratory Reports Civil and Environmental Engineering
1966
Gas removal systems associated with dredge pump:
Phase C
D. Basco
G. Bagge
R. E. Miller
J. B. Herbich
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Recommended Citation
Basco, D.; Bagge, G.; Miller, R. E.; and Herbich, J. B., "Gas removal systems associated with dredge pump: Phase C" (1966). Fritz
Laboratory Reports. Paper 218.
http://preserve.lehigh.edu/engr-civil-environmental-fritz-lab-reports/218
GAS REMOVAL SYSTEM ASSOCIATED
WITH DREDGE PUMP: PHASE C
Status Report No. 12
Pre,pared by
David, Basco
Gunnar Bagge
Robert E. Miller
and
John B. Herbich
Prepared for
U. S., Army ,Engineers District, Philadelphia
Corps of Engineers
Philadelphia, Pennsylvania
August, 1966
Bethlehem, Pennsylvania
Fritz Engineering Laboratory Report No. 310.15
CIVIL ENGI~EERING DEPARTMENT
FRITZ ENGINEERING LABORATORY
HYDRAULIC AND SANITARY ENGINEERING DIVISION
GAS REMOVAL SYSTEM ASSOCIATED
WITH DREDGE PUMP: PHASE C
Status Report No. 12
Prepared by
-David Basco
Gunnar Bagge
Robert E. Miller
and
John B li Herbich
Prepared for
U. S. Army Engineers District, Philadelphia
Corps of Engineers
Philadelphia, PennsylvBQia
August, 1966
Bethlehem, Pennsylvania
Fritz Engineering Laboratory Report No. 310.15
iPREFACE
The following status report summarizes the progress made under
Phase C of the project during the period June 1, 1966 to July 31, 1966,
at the Hydraulic and Sanitary Engineering Division of the Fritz Enginee~
ing Laboratory, under the terms of contract No. DA-36-109-CIVENG-64-72.
The progress on the study was reported in eleven status reports dated
February 1964, April 1964, October 1964, December 1964, January 1965,
June 1965, August 1965, October 1965, December 1965, February 1966, and
June 1966. (Fritz Engineering Laboratory Report No. 310.1(1)*, No. 310.2(2),
(3)(4) (5) (6) (7)No. 310.4 ,No. 310.5 ,No. 310.6 ,No. 310.8 ,No. 310.9 ,
No. 310.10(10), No. 310.11(11), No. 310.13(13), No. 310.14(14).
Phase A and Phase B of the project were completed and sum-
marized in Fritz Engineering Laboratory Report No. 310.3(8)(June 1964),
and No. 310.7(9)(February 1965) respectively.
Dr. John B. Herbich is the project director, Mr. D. Basco is
the project supervisor and are assisted by Mr. Go Bagge and Mr. R. Miller,
Research Assistants. Dr. L. S. Beedle is Acting Head of the Department
of Civil Engineering.
* Numbers in parenthesis refer to references on pages 4 and 5 .
TABLE OF CONTENTS
Preface
Table of contents
I Experimental Investigation
II Equipment Orders
III Progress on Installation
References
ii
i
ii
1-2
2
2-3
4-5
1.
I. Experimental Investigation
1. A total of sixteen medium speed movies and three high
speed movies have been taken. These movies have orifice size and air
content as varying parameters. A minimum of three different views of
the suction pipe were used with each set of parameters to record the
position of the gas bubbles. The high speed movies were taken of the
pump impeller and the horizontal suction pipe into the impeller. The
path of individual gas bubbles is better seen with the high speed movies
but only one flow condition can be investigated with one roll of f~lm.
The medium speed movies do not show as much detail in the gas flow, but
the slower film speed allows four different air contents to be investi-
gate~ with one roll of film.
2, Observations were made of the suction elbow at discharges
ranging up to 1000 gpm and n0 cavitation was visible.
3. At our 11 May meeting it was decided that in lieu of
separate tests at three pump speeds a check would be made to see if
dimensionless data from two other speeds plotted on the same line as
data from 1440 rpm tests. When this check was made, it was noticed
that a downward shift had occurred in the dimensionless plots of head
versus capacity. Several check tests were made to determine the reason
'for the shift. Since even the check tests at 1440 rpm displayed the
shif,t, it was thought that some error was present in our inst;:rumentation.
Te~ts with a Hasler speed indicator showed that the tachometer generator
mounted on the pump motor was in error by 7.0% at 1440 rpm. The
tachometer generator was removed and a new series of tests using the
2.
Hasler speed indicator. This new data is now being plotted and it
appears that the data from tests run at 1300 and 1600 rpm pump speed
is in close agreement with the data obtained at 1440 rpm.
II. Equipment Orders
1. Equipment received
a. Vacuum pump, Ingersoll-Rand, 2 hp., single stage
reciprocating type
b. Inlet pipeline filter for vac~um pump
c. Magnetic starter, General Electric
d. Level trol, Fisher type 2500-249
e. Diaphragm Actuator, Fisher type 667
2. Equipment ordered
a. Scrubber tank
b. Plexiglass accumulator
c. Flowmeter, Schutte and Koerting
III. Progress on Installation
Preliminary work has begun on the installation of equipment
for Test Series No. 2G The vacuum pump was received from Ingersol1-
Rand on 16 June and it has been bolted into place. The piping for the
vacuum pump cannot be installed until the scrubber tank is received.
The scrubber tank is necessary to keep water from entering the vacuum
pump.
3.
It was decided to have the plexiglas accumulator manufact~red
locally in order to get an earlier delivery dat,e. The accumulator is
promised in early August.
Sketches have been made in order to facilitate installation of
the vacuum system once all the equ~pment is received.
Temperature sensing devices were removed from the system and
recalibrated. Additional sensors have been ordered ,for the vacuum
system.
The tachometer generator was removed from the shaft of D. C.
pump motor and pump speeds are now measured with a Hasler hand tachome,ter
and verified with a strobotac.
REFERENCES
(~) Herbich, J. B.
GAS REMOVAL SYSTEMS ASSOCIATED WITH DREDGE PUMPS,
Lehigh University" Fri tz Engineering Laboratory
Report No. 310.1, February, 1964.
(2) Vesilind, P. A. and Herbich, J. B.
GAS REMOVAL SYSTEMS ASSOCIATED WITH DREDGE PUMPS,
Lehigh University, Fritz Engineering Laboratory
Report No. 310.2, April, 1964.
(3) Herbich, J. B.
GAS REMOVAL SYSTEMS ASSOCIATED WITH DREDGE PTlMPS:
PHASE B, Lehigh University, Fritz Engineering
Laboratory Report No. 310.4, October, 1964.
(4) Shindala, A., Herbich, J. B., Am~tange10, A., and Bagge, G.
GAS REMOVAL SYSTEM PHASE B: PART I, FORMUlATION' OF
TEST PROGRAM, Lehig~ University, Fritz Engineering
Laboratory Report No. 310.5, December, 1964.
(5) Shindala, A., Herbich, J~ B., Amatange10, A., and Bagge, G.
GAS REMOVAL SYSTEM PHAS;E B: PART I, FORMULATlOO OF TEST
PROGRAM, Lehigh Un~versity, Fritz Engineering Labo-
ratory Report No. 310.6, January, 1965.
(6) Shindala, A. and ~erbich, Jo B.
GAS REMOVAL SYSTEM ASSOCIATED WITH DREDGE PUMP:
PHASE B, Lehigh University, Fritz Engineering
Laboratory Report No. 310.8, June, 1965.
(7) Amatangelo, A. and Herbich, J. B.
GAS REMOVAL SYSTEM ASSOCIATED WITH DREDGE PUMP:
PHASE B, Lehigh University, Fritz Engineering Labo~
ratory Report No. 310.9, August, 1965.
(8) Herbich, J. B., and Isaacs, W. P.
[JAS REMOVAL SYSTEMS PART I: LITERATURE SURVEY AND
FORMULATION:·tOF TEST PROGRAM, Lehigh University,
Fritz Engineering La-boratory Report No-. 310 ~ 3,- June, 1964.
(9) Shindala, A. and Herbich, J. a.
GAS REMOVAL -SYSTEM, PART II, FORMULATION OF TEST PROGRAM,
DEVELOPMENT OF FACILITY LAYOUT, Lehigh University" Fritz
Engineering Laboratory Report No. 310.7, February, 1965
4.
(10) Amatangelo, A. and Herbich, J. B.
GAS REMOVAL SYSTEM ASSOCIATED WITH DREDGE PUMP:
PHASE B, Lehigh University, Fritz Engineering
Laboratory Report No. 310,10, October, 1965.
(11) Amatangel0, A. and Herbich, J. B
GAS REMOVAL SYSTEM ASSOCIATED WITH DREDGE PUMP:
PHASE B, Lehigh University, Fritz Engineering
Laboratory Report No. 310.11, December, 1965.
(12) Herbich, J. B. and Vallentine, H. R.
EFFECT OF ·IMPELLER DESIGN CBANGES ON CHARACTERISTICS
OF A MODEL DREDGE PUMP, Lehigh University, Fritz
Engineering Laboratory Report No. 277, September, 1961.
(13) Amatangelo, A., Miller, R. E., and Herbich, J. B.
GAS REMOVAL SYSTEM ASSOCIATED WITH DREDGE PUMP:
PHASE C, Lehigh University, Fritz Engineering
Laboratory Report No. 310.13, February, 196~.
(14) Basco, D., Bagge, G., Miller, R. E., and Herbich, J. B.
GAS REMOVAL SYSTEM A,SSOC·IATED·· W,IT,H DREDGE PUMP:
PHASE C, Lehigh University, Fritz Engineering
Laboratory Report No. 310.14, June, 1966
5.


Gas removal systems associated with dredge pump: Phase C

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Gas removal systems associated with dredge pump: Phase C

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