close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2114653

код для вставки
APFH 19% W35~
P. F. DANEL.
2,114,653
DIVISOR
Filed Sept. 29, 1934
'
. @’
.
lllllllllillllllllllll
\:\ \
3 Sheets-Sheet l
"f7
' '
‘.
\\
/
{men?w
a’
PIERRE F. DANEL.
~53 035M122” WIM “PW aaya.
April 19?
P. F. DANEL
2,114,653
DIVISOR
Filed Sept. 29, 1934
3 Sheets-Sheet 2
April 19, £938.
'
P, F, DANEL
2,114,653
DIVISOR
Filed Sept. 29, 1934
3 Sheets-Sheet 5
PIERRE F DANEL
2,114,653
Patented Apr. 19, 1938'
UNITED STATES PATENT OFFI€E
2,114,653
DIVISOR
Pierre Francois Danel, Grenoble, France, assignor
to Ateliers Neyret-l?eylier & Piccard-Picket, a
corporation of France
Application September 29, 1934, Serial No. ‘746,174
In France September 30, 1933
12 ‘Claims.
The present invention concerns a divisor sluice
the purpose of which is to distribute the water
?owing in an upstream open channel or ?ume to
two or several downstream open channels, the
5 volume of water being distributed in a given, but
Fig. 3 is a view corresponding to Fig. 1 illus
trating a modi?cation,
range of the device. The total loss of head
created by the device may be kept within a very
illustrating a further modi?cation,
Fig. 6 is a diagrammatic plan view of the de
?ume or standing wave ?ume known to the art.
With very low downstream level the flow fur
ther accelerates itself after the critical velocity
has been reached, while with high downstream
water level, the flow velocity is rapidly reduced
and a hydraulic jump is formed. In both cases
the downstream level has no influence on the
discharge in the ?ume and the water level in the
different downstream channels need not be the
30 same. With downstream water level higher
than permissible working range, conditions will
no longer be independent of downstream levels
as the “water jump” drowns the ?ume.
It has been long known to the art how to de
35 sign a ?ume to form a hydraulic jump of stand~
ing wave formation that renders the discharge
independent of the downstream level. The pres
ent invention embodies this feature, known for a
simple ?ume, in a divisor sluice that is a ?ume
40 with one or several partitions to divide the ?ow
between several downstream channels.
The velocity distribution in the controlling
section of the ?ume must be uniform so that the
flow division can be eifected in a given ratio in
45 setting the partition or partitions with the same
opening ratio or ratios.
In order to illustrate the present invention,
I have shown in the accompanying drawings
diagrammatic arrangements of apparatus con
structed in accordance therewith.
In the drawings:
Figure 1 is a diagrammatic longitudinal ver
tical sectional view of a device according to the
present invention,
-
Fig. 4 is a diagrammatic plan view of the de- 5
vice of Fig. 3,
Fig. 5 is another view corresponding to Fig. 1
The controlling ?ume which connects the up‘
stream and downstream channels is so designed
and so shaped that the flow is ?rst accelerated
and then proceeds in a stream~line ?ow that is
to say without sharp curvature of the liquid ?la
ments. In this section of the ?ume the critical
velocity is reached, which velocity is that of sur
face wave propagation, with the result that
downstream influences are checked, the action
being here similar to what happens in a Venturi
20
55
Fig. 2 is a diagrammatic plan view of the de
vice of Fig. 1,
adjustable, ratio. This ratio is independent of‘
upstream and downstream levels in the working
10 ‘ small ?gure in ordinary sizes only a few inches.
50
(Cl. 61-14)
vice of Fig. 5,
Fig. '7 is a diagrammatic plan view illustrat
ing a further modi?cation,
10
Fig. 8 is a view similar to Fig. 7 of a still
further modi?cation,
Fig. 9 is a view similar to Fig. 1 of another 15
modi?cation of the invention, and
Fig. 10 is a plan View of the device of Fig. 9.
I shall now describe how the hydraulic jump
forming the controlling ?ume must be designed
to be used in a divisor according to the inven
tion.
20
The adjustable partitions being vertical planes
movable either about a vertical axis located
downstream of the control section of the ?ume,
or parallel to the ?ume center line, it is clear
that the water ?laments in the control section
must ?ow towards the pivot in the ?rst case, and
parallel to the ?ume sides in the second, in order
to obtain a division of ?ow proportional to the
movement of the partition or partitions. This 30
feature which is of no importance in the known
standing wave ?ume measuring devices becomes
an essential feature in a divisor according to the
present invention.
The acceleration‘ of flow in the controlling 35
?ume up to the critical velocity may be obtained
either by having the control ?ume narrower than
the upstream channel or by raising the ?ume
bottom in a sill operating as a broad crested
weir. In most cases both ways are used at the
same time the proper dimensions being ?gured
out from the useful range of upstream levels and
water total discharge. In the controlling ?ume
proper, that is, that portion of the ?ume where
gradually varied flow prevails, the ?ume bottom
may be horizontal or sloped gently one way or
the other. The ?ume side walls in the control
ling section proper should be vertical planes
either parallel or converging downstream.
The connection between upstream channel and
control ?ume should be so devised that practi
cally the same ?ow conditions will prevail in
vertical planes parallel to the side walls or con
verging with them, according to the type desired.
Either guide stay vanes, stilling rakes orhoney 55
2
2,114,653
combs may be used to smooth out the ?ow and
insure a uniform velocity distribution so that the
flow distribution will be independent of up
stream conditions. In most cases however these
re?nements are not necessary and should be
used only when disturbed upstream conditions
prevail owing to bends etc.
Figs. 1 and 2 illustrate a device according to
the invention, in which the reduction in: ?ume
section is obtained by having converging sides
and by raising the bottom of ?ume to form a
sill or broad crested weir D. The distributing
partition V is rotatably mounted on an axis a.
It can be adjusted and set by an appropriate de
vice, for instance an arm M which slides over a
graduated horizontal girder N.
The converging side walls I) and c of the con
trolling section proper are vertical planes whose
prolongation would pass through the axis a. The
bottom of the weir section is a surface of revolu
tion about the axis a in order to enable the vane
V to be turned about said axis. The ratio of the
discharges in each branch is that of the angle Mab
to the angle Mac.
The same device could be made without having
the bottom in the weir controlling section sloping
downstream, this could be either horizontal or
sloping gently upwards.
Alternatively the axis a could be made perpen
30 dicular to the sloping bottom instead as being
vertical as it ought to be theoretically. In this
case the weir section of the bottom may be plane.
The approximation is fairly good with this slight
modi?cation of the'device of Fig. 1.
Figs. 3 and 4 show a device according to the
invention wherein the reduction in section to in
crease velocity is obtained by raising the ?ume
bottom between the parallel walls I) and c. The
distributing partition is made of two adjustable
40 parts V1 and V2.
The part V1 rotates around a
?xed axis a and V2 is rotatably mounted on V1
around axis as and is kept parallel to sides b c by
an articulated parallelogram linkage P, or an
equivalent device.
The movement of the parti
tion is under the control of an oscillating screw
M or any equivalent device.
Figs. 5 and 6 illustrate a modi?cation of the
device according to Figs. 3 and 4, wherein a single
partition V3 isv moved parallel to the side walls
of the ?ume under the action of two screws A
and B and gears, and where a downstream seal
ing block C is used instead of the articulated parti
tion of Figs. 3 and 4.
Fig. '7 shows a divisor according to the inven
tion wherein the partition V4 is ?xed and one side
wall In is made adjustable.
Fig. 8 represents a divisor according to- the in
vention wherein the partition V4 is ?xed and both
side walls I)’ and c’ are made adjustable. In
60 divisors like those of Figs. 7 and 8, the restricted
section of the. ?ume is adjustable so that their
range of application is widened.
Figs. 9 and 10 diagrammatically illustrate a
divisor according to the invention wherein the
65
sill or bottom D of the ?ume and the adjustable
partition V5 can be raised or lowered, in order to
widen the possible range of application when the
?ow condition varies through an unusually broad
70 range. For this purpose, threaded rods R, at
tached to the bottom D‘, extend upwardly through
members carried by the side walls and hand wheels
H are threadedly mounted on the rods to raise the
same. This raising mechanism is: somewhat simi—
76 lar to that shown in my Patent No. 2,073,610.
I claim:1. An open control ?ume for connecting a main
upstream channel with a plurality of branch
downstream channels, comprising side and bottom
walls, the cross-section of said control ?ume being
sufficiently less than that of the main channel
to produce a ?ow through the control ?ume sub
stantially equal to critical velocity and a hy
draulic jump in said ?ume, a laterally adjustable
vertical partition in. said. control ?ume posi 10
tioned in the direction of ?ow, and screw-threaded
means on said partition and a side wall for ad
justing its position relative to the side walls to
proportion the ?ow from the main channel into
the branch channels.
15
2. An open control ?ume for connecting a main
upstream channel with a plurality of branch
downstream channels, comprising side and bottom
walls, the side walls of said ?ume converging
downstream to reduce the cross-section of the 20
?ume su?iciently to produce a ?ow therethrough
substantially equal to critical velocity and a hy
draulic jump, a laterally adjustable vertical parti
tion in the portion of said ?ume of reduced cross
section and extending in the direction of flow, and 25
means for mounting said partition for lateral ad
justment to proportionally divide the flow of
water between the branch channels.
3. An open control ?ume for connecting a main
upstream channel with a plurality of branch 30
downstream channels, comprising side and bot
tom walls, a submerged sill extending across the
bottom of said ?ume between the side walls there
of to restrict the cross-section of the ?ume su?i
ciently to create a flow therethrough substantially 35
equal to critical velocity and to produce a hy
draulic jump, and a laterally adjustable vertical
partition in the portion of said ?ume of restricted
cross-section and extending in the direction of
flow, and means for mounting‘ said partition for 40
lateral adjustment to proportionally divide the
?ow of water between the branch channels.
4. An open control ?ume for connecting a
main upstream channel with a plurality of branch
downstream channels, comprising side and bottom 45
walls, a submerged sill extending across the bot
tom of said ?ume between the side walls there
of, the side walls of said ?ume converging down
stream toward said sill and cooperating with said
sill to restrict the cross-section of the ?ume suffi 50
ciently to create a flow therethr'ough substan
tially equal to critical velocity and to produce a
hydraulic jump, a laterally adjustable vertical
partition in the portion of said ?ume of restricted
cross-section and extending in the direction of 55
how, and means for mounting said partition for
lateral adjustment to proportionally divide the
?ow of water between the branch channels.
5. An open control ?ume for connecting a main
upstream channel with a plurality of branch 60
downstream channels, comprising side and bot
tom walls, the cross-section of said control ?ume
being su?iciently less than that of the main
channel to produce a ?ow through the control
?ume substantially equal to critical velocity and 65
a hydraulic jump in said ?ume, a laterally ad
justable vertical partition in said control ?ume
and positioned in the direction of flow, and means
on said partition for adjusting its position rela
tive to the side walls to proportion the flow from 70
the main channel into the branch channels, the
upstream edge of said partition being further up
stream than the furthest upstream location at
which the hydraulic jump can exist.
6. An open control ?ume for connecting a main
3
2,114,653
upstream channel with a plurality of branch
downstream channels, comprising side and bot
tom walls, a submerged sill provided with an in
in the direction of flow, means on said partition
for adjusting its lateral position relative to the
clined downstream ?oor extending across the
bottom of said ?ume between the side walls there
of to restrict the cross-section of the ?ume suf~
channel into the branch channels, and means
connecting said partition and walls of the ?uine
for maintaining said partition parallel to one of
?eiently to create a flow therethrough substan»
tially equal to critical velocity and to produce a
hydraulic jump, a laterally adjustable vertical
10 partition positioned in said ?ume over the floor
of said sill and extending in the direction of
flow, and means for mounting said partition for
lateral adjustment to proportionally divide the
?ow of water between the branch channels.
7. An open control flume for connecting a main
upstream channel with a plurality of branch
downstream channels, comprising side and bot~
tom walls, the cross-section of said control ?ume
being su?iciently less than that of the main chan
nel to produce a flow through the control ?ume
substantially equal to critical velocity and a hy
draulic jump in said ?ume, a laterally adjustable
vertical partition in said control ?ume positioned
in the direction of ?ow, means on said partition
for adjusting its lateral position relative to the
side walls to proportion the ?ow from the main
channel into the branch channels, and means for
mounting said partition for pivotal movement
about a vertical axis positioned downstream of
the junction of said main and branch channels.
8. An open control fiume for connecting a
main upstream channel with a plurality of
branch downstream channels, comprising side
and bottom walls, the side walls of said ?ume
converging downstream to reduce the cross-sec
tion of the ?ume suf?ciently to produce a ?ow
therethrough substantially equal to critical ve
locity and a hydraulic jump, a laterally adjust
able vertical partition in the portion of said flume
of reduced cross-section and extending in the di
rection of flow, and means for mounting said par
tition for pivotal movement about a vertical axis
positioned substantially at the point of intersec
tion of planes in which the converging side walls
lie to proportionally divide the ?ow of water be
tween the branch channels.
9. An open control ?ume for connecting a main
upstream channel with a plurality of branch
downstream channels, comprising side and bot
tom walls, the cross-section of said control ?iune
being su?iciently less than that of the main chan
nel to produce a flow through the control ?ume
substantially equal to critical velocity and a hy
draulic jump in said ?ume, a laterally adjustable
vertical partition in said control ?ume positioned
side walls to proportion the flow from the main
said side walls in all positions of adjustment.
10. An open control ?ume for connecting a
main upstream channel with a plurality of branch
downstream channels, comprising side and bot 10
tom walls, the cross-section of said control ?ume
being sumciently less than that or" the main chan
nel to produce a ?ow through the control fluine
substantially equal to critical velocity and a hy
draulic jump in said ?ume, a ?xed vertical parti
15
tion positioned in said flume in the direction of
flow to divide the flow of water from the main
channel into the branch channels, and means for
moving one of the side walls of said ?ume toward
and away from said partition to vary the relative 20
flow into said branch channels.
11. An open control flume for connecting a
main upstream channel with a plurality of branch
downstream channels, comprising side and bot
tom walls, a submerged sill'extending across the 25
bottom of said flume between the side walls there
of to restrict the cross-section of the ?ume suf
?ciently to create a flow therethrough substan
tially equal to critical velocity and to produce a
hydraulic jump, a laterally adjustable vertical 30
partition mounted on said sill and extending in
the direction of ?ow and adjustable to propor
tionally divide the flow of water between the
branch channels, and means carried by the ?urne
walls and connected to said sill for raising and 35
lowering the sill.
12. An open control ?ume for connecting a
main upstream channel with a plurality of branch
downstream channels, comprising side and bot
tom walls, a submerged sill extending across the 40
bottom of said flume between the side walls there
of to restrict the cross-section of the ?ume suf
?ciently to create a flow therethrough substan
tially equal to critical velocity and to produce a
hydraulic jump, a laterally adjustable vertical
partition in the portion of said ?ume of restricted
cross-section and extending in the direction of
?ow to proportionally divide the ?ow of water
between the branch channels, means for mount
ing said partition for pivotal movement about a 50
substantially vertical axis mounted on said sill,
and means carried by the flume walls and con
nected to said sill for raising and lowering the sill.
PIERRE FRANCOIS DANEL.
Документ
Категория
Без категории
Просмотров
0
Размер файла
634 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа