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Патент USA US3078815

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Feb. 26, 1963
B. c. MARLOWE
3,073,806
PUMPING SYSTEM
Filed March 14, 1960
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Feb. 26, 1963
3,078,806
B. C. MARLOWE
PUMPING SYSTEM
3 Sheets-Sheet 2
Filed March 14, 1960
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United States Patent Gil-ice
3,073,836
Patented Feb. 26, 1953
1
2
3,078,836
to trap and retain a predetermined stand-by volume of
liquid which is utilized in the automatic repriming of the
PUMPENG SYSTEM
pump under the action of an automatic valve 34 which
Byron C. Marlowe, 1 Willoughby, Rockford, Ill.
Filed Mar. 14, 1960, $er. No. 14,922
1 Claim. (Cl. 103-113)
controls the escape of liquid from the tank 33 and gravi
tation thereof to the priming well 26 whenever the need
for reprirning the pump arises. To facilitate disassembly
and repair of the automatic valve and associated parts
’ This invention relates to a power driven pumping system
that may require attention in service use, the tank 33 and
these parts are disposed in the open and above the deck 14
being supported on a suitable framework 35.
In the form shown in FIGS. 1 and 3, the discharge pipe
18 extends up through the tank 26 and the cover 31 there—
for withdrawing liquid such as gasoline out of the com
partments of an oil barge or a tanker and delivering the
same into a storage reservoir on the shore.
One object is to incorporate a pumping system of the
above character a normal mechanism for priming and
of, bends laterally through the housing 22, and is coupled
repriming the pump automatically and maintaining con
tinuous operation of the system in spite of the presence of
detachably through an extension 18EL of the pipe to a
?ange on the tank inlet 36. Preferably, the latterv is near
the top of the tank so as to better insure trapping of the
proper volume of liquid in the tank under all of the con-
air or other gases therein initially or during the pumping
operation.
Another object is to provide a system of the above char
acter in which the parts that may require disassembly and
ditions that may occur in service use.
repair in service use are exposed above the deck of the
barge and readily accessible.
Other objects and advantages of the invention will be
come apparent from the following detailed description
taken in connection with the accompanying drawings, in
which
25
FIGURE 1 is a schematic view of a pumping system
embodying the novel features of the present invention.
FIG. 2 is a plan view of a part of FIG. 1.
FIG. 3 is a fragmentary sectional view of part of the
pumping system, the section being taken along the line
3-3 of FIG. 2.
FIGS. 4 and 5 are fragmentary sectional views of dif
ferent valves, the sections being in the plane 3—3.
PEG. 6 is a view similar to FIG. 3 showing a modi?ed
form of the system.
The improved pumping system is especially adapted
'
After thetank 33 becomes ?lled, the liquid delivered by
the pump is forced up through a top opening 52 and a
check valve 34 into a pipe 53 leading through a manually
operable valve 55 to the header 13 for conveying the
liquid to the storage reservoir. The valve 54 is of the
gravity actuated type having in this instance a disk 548
biased by a light spring toward a seat 54b so as to close
automatically when the pump pressure is reduced whereby
to prevent a reverse ?ow of liquid from the delivery pipe
53 back into the tank 33.
The valve 34 is mounted on the bottom of the tank
for convenient removal and is adapted to close in response
to the ?ow of a predetermined volume of liquid into the
tank 33 and to open automatically when the pressure in the
tank falls below a predetermined value as a result of the
delivery of air or other gas into the tank. To these ends,
35 the valve in the form shown comprises a tubular casing
36a de?ning an upwardly facing seat 36 intermediate its
for use in emptying the compartments 1d of an oil barge
ends coacting with a disk 37 which is urged by a com
through the use of a power driven pump 1?. which delivers
pression spring 38 to a limit open position shown in full
the gasoline or other liquid under pressure to a header
in FIG. 4 in abutment with the casing top 358' in which
13 disposed above the barge deck 14 and leading to a 40 the stern 37a of the disk slides freely. The disk is some
storage reservoir (not shown) on the shore to which the
what smaller in diameter than the internal wall of the cas
barge is moored. In the form shown in FIGS. 1 to 3,
ing so that when the valve is open, there will be a clear
the pump is of the multiple stage centrifugal type disposed
ance, usually about 1A6 of an inch for a disk 2% inches
below the deck 14 with its impellers 15 fast on the lower
in diameter, around the outer edge of the disk which is
end of a shaft 16 which extends upwardly through the 45 then disposed near the upper edges of an annular series
pump outlet 17, a vertical discharge pipe 18 and a bearing
of openings 33 formed in the casing about the valve seat
19 in the latter. The outwardly projecting end of the
36. Also, in this position, the downwardly sloping margin
shaft is coupled through bevel gears 20 with a shaft 21
37*’ on the top of the disk is disposed opposite and spaced
journaled in and projecting outwardly from a housing 22
somewhat below holes 49 in the casing top. The spring
and coupled to an engine 23 or other power actuator 50 33 is compressed between this top and a nut 42 by which
mounted on and above the barge deck.
the spring stress may be adjusted to determine the tank
The inlet 25 at the lower end of the pump casing com~
pressure at which the valve becomes opened.
municates with and in this instance is disposed within the
To facilitate ready removal of the valve for adjustment
lower part of a tank 26 which in the form shown in FIG. 3
or repair, the casing 36a is smaller than and projects up
‘is a cylindrical tube closed at its lower and upper ends 55 through a hole 45 in the tank bottom against which a
and extends up through a hole in the deck 14 from which
?ange 43 is clamped by bolts 44. The bolts also serve to
the tank is suspended through a ?ange 26a. The tank
clamp the casing end to a ?ange 46b on the upturned end
surrounds the pump and the discharge pipe 18 and con
of a pipe 46 extending horizontally and joined by a cou
stitutes a well for holding enough liquid to effect proper
pling 46a to a ?tting 47 communicating with the upper
priming of the pump. The pipe 18 extends up through a
end of the tank 26 at a point above the deck 14. A grav
cover 31 on the tank and is ?xed thereto through the
ity closed ?apper type check valve 48 of well known con
medium of a ?ange 32.
struction as shown in FIG. 5 is interposed in the pipe 46
At a predetermined point above the pump inlet depend
ing on the volume of liquid required for priming, the tank
and is arranged to open automatically under the head of
liquid admitted to the pipe when the valve 34 becomes
26 is connected to an intake pipe 27 leading to a header 65 opened. Normally and when the valve 34 is closed, the
28 located near the bottom of the barge from which branch
?apper of the valve 48 gravitates to the closed position
pipes 29 are extended to suction nozzles 30 near the
shown in FIG. 5. When the valve 34 opens, liquid in the
bottoms of the different barge compartments Ill. Other
tank 33 gravitates down through the pipe 46 opening the
headers 28a can also be used to connect the pumping sys
tem to other barges.
In accordance with the present invention, the discharge
pipe 13 leading from the pump outlet 17 is extended to
the delivery header 13 through a second tank 33 arranged
valve 48 and running into the priming well formed by
the lower end portion of the tank 26.
-To achieve the desired automatic action of the pump,
means is provided for utilizing the return of liquid from
3,078,806
4
the tank 33 back to the priming well to displace the gas
which accumulates in the upper end of the latter tank
while the system is idle or during the pumping operation.
effects a repriming of the pump and the resumption of
liquid ?ow under pressure up through the pipe 17 and
into the tank. The valve 34 again becomes closed in the
This means includes a pipe 50 opening at 51 into the side
of the tank 26 above the deck 14 and extending upwardly
and into the top of the tank 33 through a check valve 57
manner above described and the withdrawal of liquid
from the barge compartment 10 is resumed. These cycles
of alternate pumping, repriming of the pump and the
of the construction shown in FIG. 5. Liquid gravitating
disposal of gas are repeated until all gas has been removed
from this tank into the priming well 26 will displace the
from the intake piping and liquid starts to ?ow from the
gas therein and force the same upwardly through the pipe
pipe 27 into the well 26 to maintain the pump in continu
50 into the top of the'tank 33 after opening of the check 10 ous operation.
valve 57. Then, during the initial operation of the pump,
After the tank 33 becomes full during 'such repeated
this gas is displaced by the liquid delivered into the tank
cycles, the liquid delivered through the pipe 35 is forced
33 and is forced out of the latter through the valve 54
up through the outlet 52 and into the piping leading to
and the pipe 53, the valves 34 and 57 then being closed.
the storage reservoir. The pump then operates until the
In one successfully operating system of the construc
barge compartment is emptied or for some other reason
the nozzles 30 become exposed permitting gas to enter
the intake piping. In such event, the liquid in the Well
26 may become exhausted thus disabling the pump until
the latter becomes reprimed in the manner above de
tion above described, the delivery capacity of the pump
12 was 2200 gallons per minute, the priming well 26 and
the tank 33 adapted to hold about 100 and 175 gallons
of liquid respectively, and the spring 38 was set to lift the
valve disk 37 oil? from its seat in response to a decrease 20 scribed through the automatic opening of the valve 34
to 8.5 psi. between the pressure in the bottom of the
in responding to the resultant pressure reduction in the
tank and the return of priming liquid to the well 26.
tank 33 and in the pipe 46. At the same time, the valve
34 is closed in response to a pressure differential of 9 psi
The construction and arrangement of the tanks 33 and
26 for trapping and holding the liquid for repriming the
When the pump is stopped, the valve 34 opens and the
liquid trapped in the tank 33 gravitates down through the 25 pump may be varied to suit different installations and to
pipe 46 and into the priming well 26 ?lling the latter about
accommodate other types of pumps. A preferred ar
rangement is shown in FIG. 6 wherein the parts corre
to a level 56 thus priming the pump. At this time, the
sponding to those shown in FIGS. 1 and 3 are indicated
upper part of the well 26 and also the intake pipe 27 and
the piping leading to the nozzles 30 will normally be ?lled
with air or other gas.
by the same but primed reference numerals. In this in~
30
stance, the pump 12', the priming well 26', and the dis
charge pipe 17' as well as the tank 33' and the valve 34'
With the pump thus primed, the engine 23 is started
are disposed above the deck 14' of a barge or ?oating
driving the pump 12 to draw in liquid from the well 26
clock. The pump is of the split case type known as Peer
and force the same upwardly through the pipe 17 and into
less Type A centrifugal pump having its shaft 16' dis
the tank‘ 33 at the full capacity of the pump. This liquid
?rst accumulates in the bottom of the tank and starts to 35 posed horizontally. The pump inlet 25’ communicates
with the lower part of the tank 26’ and the outlet pipe
escape out through the holes 39 and 40 in the valve casing
18’ leads to the upper part of the tank 33’.. As in the
36a and return to the priming well, the rate of this ?ow
being only a small part of the rate of delivery of liquid
installation ?rst described, this is advantageous in pre
venting objectionable emptying of the tank 33' due to
by the pump into the tank 33. The liquid ?owing down
through the holes 40‘ impinges against the top of the valve
disk 37 thus urging the latter downwardly. At the same
time, the ?ow in through the holes 39‘ and downwardly
through the valve casing 36a creates a vacuum beneath the
valve disk. These forces combine with the downward
pressure due to the rapidly rising head of liquid in the
tank to exert on the valve disk a resultant force which
increases and rapidly reaches the 9 psi. or other differ
ential for which the spring 38 responds to allow the disk
to move down to the closed. position shown in phantom in
FIG. 4.
Pumping of the liquid out of the well 26 creates a vac
uum which draws gas out of the intake piping 27 and
40
the momentum of the upwardly moving body of liquid
after the pump has been disabled by entry of gas into
the intake piping While the pump is operating at full
capacity. In other respects, enough liquid is trapped in
the tank 26 under all service conditions to insure effec
tive repriming of the pump.
In both of the systems described above, it will be appar
ent that the valves '34, 48, 54 and 57 are readily accessible
above the deck of the barge and may be easily removed
‘for repair or adjustment. Thus, by removing the bolts
44 and disengaging the coupling 46a» the pipe 46 and the
valve ‘casing 3t?a may be disconnected and removed from
the tank 33. All of these parts are disposed in the open
unenclosed area above the deck and above the liquid
initiating the ?ow of liquid in through the nozzles 30 and
level so as not to interfere with Or delay the disassembly
upwardly toward the intake pipe. Ordinarily the volume
of the intake piping will be greater than the volume of 55 operation.
The mounting of the automatic valve and associated
priming liquid available in the well 26. As a result, the
piping above the barge deck is also advantageous in that
pump will usually lose itsprime before liquid from the
the parts are or can be spaced from the pump and thereby
source such as the barge compartment ?lls the piping and
less subject to vibration. Maintenance costs are thus
begins to ?ow into the well 26. As a result, the delivery
reduced and the service life of the system prolonged.
of liquid to the tank 33 is interrupted resulting in a de
Since the repriming of the pump occurs entirely auto
crease in the downward liquid pressure on the valve disk 60
matically, the improved pumping system is brought into
37, the pressure differential on the latter being eventually
action simply by starting the engine 23 and continues to
overcome by the spring 38. This allows the valve to open
thereby again initiating gravitation of liquid trapped in
operate without attention in spite of interruptions in the
the tank 33 down through the pipe 46 and back to the
submergence of the suction nozzles 30 due to tilting of
priming well.
the barge or the like. Through the use of the system,
This liquid displaces the gas accumulated in the prim
oil barges or other tanks may be unloaded rapidly at
ing well thus placing the latter under su?icient pressure
minimum costs both in normal operation of the equip
to open the check valve 57 and force the gas upwardly
ment and in the servicing thereof.
through the pipe 50 and into the tank 33. This gas 70
I claim as my invention:
escapes through the outlet 52 and passes on into the
A system for pumping liquid from a compartment hav
storage reservoir when displaced vby liquid again pumped
ing, in combination, a tank having a top outlet adapted
into the tank 33.
for extension to a storage reservoir, a power driven pump
The liquid returned to the pump after disabling of the
disposed below the bottom of said tank, a second tank
latter by exhaustion of the liquid in the priming Well 75 communicating with the inlet of said pump and adapted
8,078,806
5
to contain a column of liquid disposed above said inlet
and having a volume suf?cient to prime said pump, an
intake pipe extending into said compartment and com
municating with said second tank at a point suf?ciently
high to permit trapping of said liquid volume in said sec
ond tank, a second pipe connecting the discharge outlet
of said pump to said ?rst tank and communicating there
with at a point spaced suf?ciently above the bottom of
said ?rst tank to trap therein enough liquid to prime said
pump, a third pipe adapted for the gravitational flow of 10
liquid out of the bottom of said ?rst tank and into said
second tank, a valve controlling the ?ow of liquid through
said third pipe, means biasing said valve to open and
responsive to the pressure in said ?rst tank to maintain
the valve closed during continued delivery of liquid into 15
said ?rst tank through said second pipe but to open the
valve automatically in response to a predetermined drop
in the pressure in said ?rst tank due to interruption in
the delivery of liquid thereto, and an automatic check
valve interposed in said third pipe and operable to open
6
and permit said gravitational ?ow but to close automatb
cally and prevent a reverse ?ow of liquid through said
third pipe.
References Cited in the ?le of this patent
UNITED STATES PATENTS
1,206,385
1,757,282
1,910,531
1,989,061
1,997,418
2,022,624
2,219,635
2,510,190
2,902,940
Sperry ______________ .. Nov. 28,
Wood ________________ __ May 6,
Ferguson ____________ __ May 23,
Longenecker __________ __ Jan. 22,
Hocnschuch ___________ __ Apr. 9,
Longnecker __________ __ Nov. 26,
Ralston ______________ __ Oct. 29,
Nicolette _____________ __ June 6,
Meyer _______________ __ Sept. 8,
1916
1930
1933
1935
1935
1935
1940
1950
1959
FOREIGN PATENTS
850,583
France ______________ __ Dec. 20, 1939
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