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Патент USA US2403751

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- July 9, 1946.
2,403,751.
J. 5. PALMQER
THROTTLING VALVE
Filed March 20, 19.45
45
/
W70
M
‘ m.
.\33
+
FIG.
.
ATTORNEY.
2,403,751
Patented July 9, 1946
UNITED STATE 5
PATENT oFrlcE
2,403,751
'THROTTLINGVALVE "
Jewell S. Palmer, Baytown,‘ Tex-“,1 assignor to
Standard Oil Development- Qompany, a corpo
ration of Delaware
l
Application March 20, 1945, Serial lea-$533,753- " 1
?Claims.
1
(01.302-1) ~ I
2
,
materials.
‘
"
.~
.
Ntion and its outside ‘diameter secured to the inside I
The present invention is directed vto 7a valv
adapted for use in apparatus handling abrasive
wall of" body II at a point adjacent ‘?ange l3. '
In the drawing, the nozzle is'sh'own as having
an interior conoidal‘ surface‘ l0 approximating
'
It‘ is an object of the present invention to
shape that ‘formed by revolving a quarter ellipse '
devise a valve adapted to be'used for throttling
a stream comprising abrasive materials and which
around the-axis of‘ the throat‘. >
‘
Arranged in ‘valve bodyll I upstream‘ from noz-v
zlev M is ‘amounting 'meansyadapted for ‘carrying
is provided with seating surfaces which are not
subjected
A further
to abrasion
object ofby'the
the present
stream. invention" is
the movable portions of the valve. ' The mounting
means
includes a tubular member 19 ‘secured in
10"
the provision or a valve adapted for throttling'a
body II by radially-extending- supporting'?ns 20.
stream and. provided 'withsurfaces' de?ning the
opening through which the thr'ottled stream flows
and other ‘surfaces independent thereof whichv
A conoidal surface 2| is secured to‘ the upper edge
of tubular member l9 and fauna cover to pre-4 ‘
vent the entrance of the 'stream'into the'upstream ,
mayibe engaged to terminate completely ?uid ?ow ‘
through the valve.
'
'
'
-
.
‘
'
15
'
end of member I191.
upper portion of valve element 22 is formed by‘?
ranged in a conduit carrying a stream ‘of abrasive
a tubular-portion 23 whose outside surface ?ts 7
material and which will remain operable for long
'
~
;
_ :
body H ‘for longitudinal movement therein; vThe ‘
» provision of a throttling valve adapted tO'be ar
periods of time.
'
y-A-movable-valve ‘element 22 is arranged'within
A further object of the present invention is the
‘ slidably within'th'e interior‘ surface of member
l9; An upper wall member '24 ‘joins the ‘up-per '
.
An additional object of the present invention
is the provision of a valve in which the surfaces
cooperating to form a ?uid-tight sealare pro
edges of the tubular member‘ 23’and closes the
upper end of element ‘22 in a ?ui'd-tight'manner.
Secured to the lower edge of member 23 'by con;
tected from abrasion by material ?owing through
ventional
fastening means; such as screw threads
25'
the valve and in which other‘ surfaces‘ arranged
to minimize the abrasion ‘of the stream flowing‘
Annulus 25'lde?nes ‘an inside wall having an
through the valve are employed to adjust over‘
upper portion of general tubular form designated
a wide range the rate of ?ow through the valve.
byinumerall'l and. of rsuch'ldimens'ions as to fit"
Other objectsand advantages of the ‘present
invention may be seen from a reading of the'fol 80 slidingly over surface‘IB of nozzle l4. " The lower‘
26,~isannulus25.‘
‘
“
'~
'
'
edge ofsurfac‘e 21 joins curved-seat 28. Seat 28
is arranged-to. cooperate with ‘seat ll of nozzle
lowing description taken in conjunction vwith the
drawing in which
’
7‘
Fig. l is an elevation, partly in section, of an'
I4 sothat when'th'e two seats arebrought' into ‘
contact, new of ?uid through the valve is pre
vented. The lower edge ‘of seat 28 joins cylin
valve in a throttling position;
‘
' 85
drical wall section 29 which is adapted to fit slid
Fig. 2 is a view taken along line 'II--II-' of Fig. 1;
ingly over wall section'lt of nozzle‘ 1 41. The out
side surface'of: ‘annulus T25 ihcludesan‘ upper‘
Fig. 3 is a fragmentary view of, a portion of the a
cylindrical section ‘30' and a‘ lower curvéd‘sec;v
device of Fig. 1. showing the seating surfacesin
embodiment of the present invention, showing the
and
I
'
contact to illustrate the
'
relative
-
'
positionsnoftion 3L
the several ‘parts when the valve is closed;
Turning now speci?cally to the drawing, a‘tubu
lar member I l, which forms the body of the valve, '
is provided with suitable means, such as ?anges '
l2 and I3, for connecting it in a- conduit carrying '4 5
a ?owing stream, It is usually desirable‘ to ar-"
range body II; with itslongitudinal axis sub
stantially vertical and ?ange I! at its'upper end
and- ,?ange l3 at its lower end, as shown in the
drawing- It will be understood, however, that 50
the valve body II may be positioned so-th'at its
-
'
‘
'7
An elongated‘ body 33'is' secured to annulus 25.
Body 33' is formed‘ with an elongated'tubular .
,centralftportion, its upper‘ end upset to form ‘a
circular shoulder 34 and its lower end tapering '
to aconoidaT-point 36 which has a substantially "
thicker wall section than the central‘ tubular sec‘
tion' of body 33. Circular shoumer 34‘ is secured
to annulus 25 by mating "screwthre'ads 35. The
outside conoidal surfaceof member 3'3 ‘is desig
nated by numeral 31 and’ is arranged to deeper
ate with curved interior surface ID of nozzle M
to de?ne a passage‘ of generally streamline shape ’
longitudinal axis is not vertical and'many of the
for theistre‘am of ?uid passing through 'b'od'y H.
Securedto' the upper surface of wall 24 is a 1
Arranged within the body‘ H is a nozzlev M‘
with a throat l5 pointing in the upstream direc; 55 _-rack '3‘8to‘which is attached guide members '39.
advantages of the present invention retained.
-
3
2,403,751
4
Longitudinally extending members 40 are secured
to the inside wall of tubular member I9 to co
operate with guide members 39 and retain the
time, suspended solids settle out of the stream
in su?‘lcient amounts to ?ll up the dead space
between the outer surface of member l4 and the
longitudinal axis of the rack parallel with the
longitudinal axis of tubular member I9 and valve
body II. A shaft 4I carries a pinion 42 which
inner surface of body II to such an extent as to
cover completely seat I1 and protect it from the
moving suspended solids. In Fig. 1 the suspended
is arranged to engage with rack 38 so that upon
material is designated by 5| and is shown com
rotation of shaft 4|, the rack is moved longitu
pletely ?lling this dead space. Accordingly, both
dinally with respect to tubular member IS. The
the upper seating surface 28 and the lower seat
axis of shaft 4| extends transversely with respect 10 ing surface I‘! are shielded from moving solids
to the axes of member l9 and body II and pro
and retain their dimensions allowing them to be
jects through holes provided in body I9 and
brought into contact and form 'a ?uid-tight seal
member II. Contact of shaft 4| with the ?uid
even after the device has been placed in opera
stream passing through the annulus de?ned by
tion over a long interval of time.
body H and member I9 is prevented by tubular 15
It will also be seen that the area of flow
members 43 and 44 which pass through body II
through throat I5 of member l4 may be altered
and are sealed thereto and have their inner ends
over a wide range by moving conoidal point 36
secured in a ?uid-tight manner to member IS. A
vertically with respect to the throat of member I4.
bearing member 45 is secured to the outer end of
The portions of members I4 and 33 which direct
tubular member 43 and is arranged to receive one 20 the flow of the stream are relatively thick and a
end of shaft 4|, while a packing gland 46 and a
substantial portion of material from these parts
a packing gland follower 41 are arranged around
may be abraded by the stream before they require
the end of shaft 4| adjacent the outer end of
replacement. It will be understood that the point
tubular member 44 to prevent leakage around
36 and throat I5 simply cooperate to allow
the shaft. The end of shaft 4| projects beyond 25 throttling of the valve to any suitable flow area
packing gland 46 and tubular member 44 and is
and the abrasion of these surfaces does not pre
adapted to be connected to a suitable means for
vent the the closing of the valve in a ?uid-tight
producing rotation; in the drawing, the rotating
manner by bringing surface 28 in'contact with
means is shown as an electric motor 48 but it will
seat I‘I.
-
be understood that this speci?c rotating means is 30
Having fully described and illustrated the
shown only for purposes of illustration, and other
present invention, what I desire to claim is: '
means, for example, a hand crank may be pro
1.v A valve comprising, in combination; a tubu
vided for rotating shaft 4 I.
' '
In order to prevent the passage of abrasive
lar body de?ning a central passage, a wall mem-v
ber shaped in the form of a nozzle arranged in
materials upwardly in the space between tubular 35 said central passage with its smaller throat end
member I9 and member 23 and thence outwardly
pointing'in the'upstream direction vwithin said
in the space between shaft 4| and tubular mem
ber 44. an irilet line 49 controlled by valve 50
is provided to allow the iniection of a suitable
?uid, such as air and stream. to maintain pres
sure within member I9 slightly in excess of the
pressure below its lower edge so that the flow
passage and its large diameter end secured to the
inner wall of said tubular body and defining a
so that it passes through the throat I5 of nozzle
to cooperate with the seat of the nozzle member
valve seat on its outside surface spaced slightly
downstream from the upstream end of said mem
ber, a movable member de?ning a conoidal sur
face with a maximum diameter slightly less than
of material between members I9 and 23 will
the minimum diameter of the throat of said wall
always be downwardly.
member, and an annulus upstream from the
As has'been heretofore stated, the mechanism 45 conoidal surface arranged to cooperate with the
of the present invention is particularly adapted
seat of the said wall member to form av ?uid
for use in a conduit carrying a suspension and
tight seal, and a mounting means arranged to
provides a means for regulating the volume of
support said movable member at a point up
?ow through the conduit over a wide range. The
stream from the wall member and adapted to
device is constructed to minimize abrasion of the 501 move it along the longitudinal axis of the tubu
several parts thereof and the seating surfaces
lar body to bring the seat of said movable mem
employed to close the valve in a ?uid-tight man
ber into contact with the seat of said wall mem
ner are protected from direct contact with the
ber.
abrasive material being carried in the stream
2. A valve comprising, in combination, a tubu
passing through the valve body.
lar body member de?ning a central passage, a
When employing the valve of the present in;
nozzle member having the inner surface adja
vention in a conduit through which a ?uid vehicle
cent the smaller end de?ning a throat, its outer
carrying suspended‘ solid material is forced to
surface de?ning a seat spaced away from the
?ow, it is desirable to place it in a vertical‘ sec
smaller end and its larger end secured to the
tion of the conduit with ?ange I2 uppermost as 60. tubular body in a ?uid-tight manner with the
indicated in the several figures of the drawing,
throat pointing in the upstream direction in said
with the stream ?owing downwardly through the
central passage, a movable member de?ning a
valve body. When the device is arranged in this‘
body having a cylindrical surface with a maxi
manner the stream, including-‘the ?uid vehicle
mum diameter no greater than the minimum
and the suspended solid matter, flows down 65 throat diameter of vsaid nozzle member and a
wardly in the annulus de?ned by body II and
conoidal point and an annular portion spaced
member I9 and its direction of ?ow then changed
away from the point and de?ning a seat adapted
I4. A minimum resistance to the ?ow of the
stream is presented by curved surface 3| of an
nulus 25 and throat surface I8’ of member I 4.
It will further be seen that the upper seat 28
is entirely out of the path of ?ow of the stream.
After a stream of ?uid vehicle and suspension
flows through the device for a relatively short‘ 75
to form a ?uid-tight seat,’ a mounting means
mounted on said tubular body member and ar
ranged to support said movable member with said
conoidal point downwardly and to move said
movable member along the'longitudinal axis of’v
the body member to engage its seat with the seat
of said nozzle member.
'
'
'
.
2,403,751
.
3. A device in accordance with claim 2 in which
the suspending means includes a rack secured to
said movable member and a pinion adapted to
move said rack parallel with the longitudinal axis
of the tubular body.
'
'
4. A valve comprising, in combination, a tubu
lar valve body, a nozzle member with its inner
surface de?ning a throat, its outer surface de?n
ing a seat spaced from its smaller end and its
.
6
throat of the nozzle body terminating in a
conoidal point below said annular portion, and
with the axes of the tubular portion and the an
nular portion concentric with that of the tubu
lar body, a mounting means arranged to support
said movable member above the nozzle member
and to move it downwardly with the tubular por
tion within the throat of the nozzle member.
5. A device in accordance with claim 4 in
larger end secured to the tubular valve body with 10 which the suspending means includes a rack se
cured to the movable body and a pinion mounted
the throat pointing in the upstream direction and
on a shaft suspended from said valve body and
the axis of the nozzle coinciding with the axis of
‘adapted to move the rack along the longitudinal
the tubular body member, a movable member
axis of the body.
I
de?ning a downwardly projecting annular por
6. A device in accordance with claim 4 in
tion with a valve seat on the interior of said an 15
which the mounting means includes an enclosed
nular portion adapted to cooperate with the valve
housing and means for ?owing a. ?uid medium
seat de?ned by the outer surface of said nozzle
therethrough.
portion to form a ?uid-tight seal and a down
JEWELL S. PALMER.
wardly projecting tubular portion of a maximum
diameter less than the minimum diameter of the '20
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