our firm reserves the right to make any technical …...our firm reserves the right to make any...
TRANSCRIPT
Howell Bunger Cone disCHarge valve
ManufacturingWater Valves
Industrial ValvesPenstocks and Gates
Radial GatesSpecial Applications
Management
System
ISO 9001:2008
www.tuv.com
ID910508478921
Our firm reserves the right to make any technical changes without any notice to the client. Our firm reserves the right to make any technical changes without any notice to the client.
Our firm reserves the right to make any technical changes without any notice to the client.
02 Application
Di Nicola Outlet bottom Dam Fixed Cone, Hol-low jet and Howell Bunger type Valve is used to regulate ow rom dams and reservoirs. It is a ree ischarge valve that is commonly use as a turbine bypass valve, reservoir drain, or con-tinuous ischarge ow control valve. Di Nicola manu actures fi e cone valve with contoure ri s that eliminate the vi ra-tion problems associ-ate when ischarging into the atmos here the jet spreads out in a wide cone angle and breaks u into a fine s ray. containment o the et is esire a hoo can e
installe which concen-trates the ow. e en -ing on the esign o the stilling basin, Di Nicola fi e cone valves valves can be installed in:
. tan ar version with o en ischarge (Figure 5)
. ecial version assem le with a hoo i e as a et gui e i e to concentrate the
water ow a ter the valve
C. Submerged version in order to dissipate the hy raulic energy uring ischarging .
. ertical version with ischarge in a close or semi o ene cham er . igure .
he a vantage o using a hollow et valve in com ination with a hoo i e is that the water ow a ter the valve is concentrate nearly in
the same iameter o the hoo i e.
01 Company
Over the years i icola has im rove the esign an manu acturing o Outlet cone fi e
valves improving clients’ processes, avoiding cavitation henomena vi rations an re uce their o eration an maintenance costs long lasting. Our products are developed to meet an sur ass even the most i ficult con itions.
i icola manu acture outlet ottom am valves cone , Hollow jet and Howell Bunger type o en rain room issi ation or ischarge su -merged under construction EN S275J0 steel an stainless steel with high nickel content with si es etween an mm an nominal ressures rom . ar to ar. i
icola manu acture such valves accor ing to operation and installation conditions in order to create time by time a tailor made valve able to ensure er ormances in the articular con i-tions in which they will o erate an erecte . i
icola o er to its ustomer imensioning on ro ect con itions time y time although this
catalogue is issue in or er to give the most suita le stan ar in ormations to the en users.
Fig. 5
Fig. 6
Our firm reserves the right to make any technical changes without any notice to the client.
03 Design
he valve shall e esigne as a ree is-charging fi e cone valve ca a le o o erat-ing throughout its range without cavitation or vi ration. he valve shall e metal O ring seate achieving ri tight shut o .i icola valve is the one an only i e cone owell unger valve with new ree s ring
sleeve design” avoiding any blocking due to reaking o a usting s rings locate on the
sleeve obturator in common competitors design.
04 Valve body
he o y will e o a cylin rical esign with an u stream ange or connecting to a con-uit i e. he ownstream en will contain an
O ing seal re lacea le an enca su-late y means o a retaining stainless steel isi
ange anchore to the en o the valve o y in stan ar version with o en ischarge
with olting. he o y will incor orate three vanes or smaller si es to mm an five vanes or igger iameters esigne as sta ili ers to allow the valve gate to travel rom o en to close without vi ration. he conical seat will e fiel re lacea le without removing the valve rom the line. he o y will contain a rear seal groove to seal the sleeve gate an prevent leakage during operation.
Materials Materials
1
2
3
4
5
6
7
8
Washer
Body
Seat ring
Stem
O-ring
Gear Box
Key
Obturator
Cardan joint
Gear box
Joint Cover
hrea e in
Bolt T
O
O
2
2
O 2
O 2
r i 3
3
O
GJL250
GJL250
O
Assembled
r i 3
r i 3
05 Valve Sleeve obturator
he sleeve o turator is cylin rical an uses a linear motion to o en an close the valve. n
an version the gate seat is in t.st machine in conical sha e .
n version ertical with ischarge in a close or semi o ene ham er eating is achieve y an internal O ing seal re lacea le an enca sulate y means o a retaining isi stainless steel ange anchore to the sleeve y means o olting.
07 Testing
he valve shall e hy rostatically teste at times working rate ressure or minutes an shall show no sign o leakage at the wel e areas or through the o y. he o y an gate sleeve seat when in the close osition shall e ri tight.
06 Hoods
hen a hoo is re uire to irect the is-charge ow stream it shoul e attache to the valve sleeve gate y a connecting ange.
Eletric attuator
Our firm reserves the right to make any technical changes without any notice to the client.
Det. D
75
Det. E
2
D
E
G Det. G
Our firm reserves the right to make any technical changes without any notice to the client.
0
10
10 20 30 40 50 60 70 80 90 100
-10
- 20
20
30
40
50
60
70
80
90
100
Percent Of full valve opening
HOWELL VAL COEFFICIENT FACTO VES O O L
VAL TO A O
PRES
SURE
FAC
TOR,
FCO
EFFI
CEN
T O
F D
ISCH
ARG
E, C
Peziometer 6
NOTEH= Total hea h V
h tatic hea one iameter u streamc= Q
A 2gh
2a1
a nlet area s . t easure ie . hea
Dis. free - Hood in placeDis. free - Hood in removed
P5
P7
P6
P5
P2
P3
P3
P4
P2
P3
Our firm reserves the right to make any technical changes without any notice to the client.
Lateral view
57 mt54 mt
38 mtH
14,5
0 m
t
10 mt
46 m
t 50 m
t
19 m
t
36 m
t
10 mt16 mt8 mt11,5 mt
Data:
Head: 35 m H2Overtical inclination of HB valve : 0°Air resistance: not considereddissipation phenomena: not consideredaction of wind: not considered
Detail HSCALE 1 : 40
Hard rain area
Embedded conveyor ring
Hard rain areaMedium rain areaLow rain area
DI NICOLA INFINAM S.r.l. Legal seat: Via Mazzini, 11
66020 San Giovanni Teatino (CH) - ITALYTel. +39 085 9049480 - Fax +39 085 9049481
Web site: www.dinicolavalves.comemail: [email protected]