tbs rsoest bbv water level regulation · tbs rsoest bbv water level regulation specialised in water...

WATER LEVEL REGULATIONTBS SOEST bvbbR

SPECIALISED IN WATER MANAGEMENT PRODUCTS

AN INTRODUCTION TO WATER LEVEL REGULATION 4.1

HDPE SLUICE GATE PKS 4.7

HDPE SLUICE GATE WITH FLUSH INVERT PKS-FI 4.9

HDPE HAND GATE PHS 4.10

HDPE OVERFLOW GATE VALVE POS 4.12

HDPE DOUBLE OVERFLOW GATE DPOS 4.14

HDPE FLAP WEIR PKLS 4.16

HDPE STOP LOG PSS 4.17

HDPE FLOAT VALVE 4.18

DEVICES

4.0

AN INTRODUCTIONTO WATER LEVEL REGULATION

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THIS SECTION IS INTENDED TO ASSIST USERS TO

SELECT THE MOST SUITABLE REGULATION DEVICES.

HISTORY

The Netherlands is a land of water, whose cha-racter is to a large extent determined by rivers,lakes, ditches and canals. This water must beclean and healthy if we wish to keep our countryhospitable. Moreover the water level should beneither too high nor too low, as this would threa-ten both people and their environment.

The Dutch water boards have been responsiblefor water management since the thirteenth centu-ry. The development of HDPE water managementand control devices originated from close co-ope-ration with these regional water authorities. Thewater boards have always been on the look outfor cost effective and innovative materials to helpthem regulate and control water levels in TheNetherlands economically.

These developments formed the basis of the pro-duct range that TBS supplies today. New pro-ducts are still being developed and tested in themost challenging environment possible, theDutch polder areas, where water regulation andcontrol is essential for survival. Almost half TheNetherlands is situated below sea level andwould be flooded if there were no defences.Without proper use of water-management pro-ducts The Netherlands would be inundated.

The flexibility of HDPE proved to be a majoradvantage in creating and providing tailor madesolutions. Once put in place these products donot require any maintenance and are reliable andeconomical solutions.

Today we divide the regulation programme intothree different sub-programmes.A) to block the flow to the height of the doorB) to regulate water level upstream C) to regulate water level downstream

TO BLOCK THE FLOW

SLUICE GATE PKS A normal application in channels is to block theflow to the height of the door.

In this kind of application the water level will notexceed the height of the door. In most cases thedoor height will be equal to maximum water level+ 100 mm as safety.

Closing the door blocks the water in the channel.The sluice gate is operated like a penstock with aspindle opening / closing the door. Sluice gatescan be operated by T keys, hand wheels, gear-boxes and can also be fully electrically actuated.

Modifications reserved.4.1

Sluice gate sealing to height of door / type PKS.

ON-SEATING PRESSURE ON-SEATING/OFF-SEATING PRESSURE


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HAND GATE PHS For small sizes with the same function, handoperated gates provide a simple low budgetsolution. Direct manual force is required to liftthe door. Handgrips are placed on the door toenable direct lifting.

For larger gates (above 0.6 square meters) thesame type of gate can be equipped with liftingeyes, so that the door plate can be lifted with awinch or other lifting devices present on site.

TO REGULATE UPSTREAM

OVERFLOW GATE VALVE POS The device used to continuously regulate between a minimum and a maximum level upstream is called an overflow gate valve.

The product is always tailor made depending on the exact installation situation / dimensionsfor the customer. The customer defines the regulation height (dh) from minimum to maximum level and net width (db).

The regulated level varies between H max, themaximum upstream water level and H min, theminimum upstream water level. This range isdefined as Dh, the regulated height.

The door is lowered to regulate the water level.To accommodate the overflow gate door, spaceis always required below the H min level.


Hand gate for manual lifting type PHS

Hand gate with lifting eyes for non-manual lifting type PHS

Overflow gate valve type POS

Door set at maximumregulating level H max

Door set at minimumregulating level H min


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DOUBLE OVERFLOW GATE VALVE DPOSThe overflow gate valve DPOS has the samefunction as the overflow gate valve POS.

In addition to the above-mentioned POS, theDPOS product has the extra feature that thelower part of the construction is not fixed.

The DPOS has two doors. The upper door regu-lates between the minimum and maximumlevels, just like the POS overflow gate valve. Thelower door can be lifted.

Each door is operated by its own spindle.

Why would you require this DPOS overflow gatevalve with two doors?

The lower door is used to drain the channel intimes of excess water. Following heavy rainfall,so much water could accumulate in the channel,that the overflow gate valve could not handle allthe water. To prevent such a situation the lowerdoor can be opened / lifted so that the excesswater can be drained.

When both doors are lifted, the user has thelower door as free flow area. Both doors are lifted to height H min. If there is need for morelifting height you can also lift to H max level.

The consequences of making the DPOS overflowliftable to above H max level can be seen below.


Hmax

DhDh

Lower door closed and upper door in maximum (H max) position.

Hmin

Dh

Lower door closed and upper door in minimum(H min) position.

Hmin

Lower door opened and upper door in maximum position.From bottom to H min there is free flow. No regulation.

Hmax

Lower door opened and upper door above maximumposition. From bottom to H max there is free flow.

Hmin

Hmax

DPOS liftable to (above) H min

DPOS liftable to(above) H max


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On the left, the lower door of the DPOS can beraised to the upper door at maximum level. The upper door cannot be lifted to a higherlevel. On the right both doors can be raised toabove the maximum water level of H max. As aconsequence the total height of the constructionincreases considerably.

In enquiries it is essential to state the requestedlifting height (H min or H max). (See also pages4.14 and 4.15)

FLAP WEIR PKLSInstead of an overflow gate valve with a vertical-ly moving door, an alternative product can beused that has a rotating door: the flap weir.

As a result the flap weir can regulate fromalmost the bottom of the channel. The advanta-ge is that this weir does not need space toaccommodate the door below the H min level.

The doorplate and segments are made of HDPE.The door can rotate from H max, the maximumregulated water level

to H min, the bottom or minimum regulatedlevel.

Just like the POS overflow gate valve the flapweir regulates continuously between the mini-mum level (H min) and the maximum level (Hmax). However its construction is much morecompact.

STOP LOG PSS

Besides the possibility of regulating continuous-ly between a minimum and maximum level, aless accurate device can be used. This is a stoplog, for regulating flow levels step by step.

Step by step regulation is achieved by just put-ting the logs into the frame.

This kind of equipment can also be used as analternative for large sluice gates. The stop logcan be an economical alternative to stop theflow occasionally where a sluice gate would per-haps be too expensive for the limited use and/orwhere a sluice gate would be technically toocomplicated because of the large dimensions.The construction of the frame will not stick outabove deck level. Stop log constructions canalso be used in emergency situations and formaintenance purposes.


Flap weir type PKLS

Dh

Hmax

Door set to maximumregulating level H max

Door set to minimumregulating level H min

Stop log type PSS


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TO REGULATE DOWNSTREAM

FLOAT VALVE TYPE PVIA float valve has been developed to regulatedownstream water level. This valve operatesindependently, without any manual or electricpower requirement. The product has a proventrack record in the Dutch polders. It is always acustom made product.

We can design this special float valve on thebasis of the specific site parameters (differencein water level upstream and down stream - theso-called ∆ H value) and the culvert capacity inm3/second.

If the water level downstream remains highenough the float shuts off the opening with adoor. Only when the downstream (on the left inthe picture) water level drops, will the float belowered enabling the door to open. The watercan enter...

until the water level increases again and thefloat closes the opening. The PVI float valvereacts automatically to a change in the waterlevel down stream.


∆H

300

Capacity in M3 /sec

Float valve type PVI

decr

ease

d le

vel


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PKS sluice gates in Tubli wwtp Bahrain

DPOS overflow gate in Soest Holland

PKS sluice gates in Balaghaderreen wwtp Ireland

PKLS flap weir in Tin Shui Wai - Hong Kong PVI float valve for Ireland

POS overflow gates in Chestnut wwtp Singapore

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1

2

3

4

5

14

166

78

9

10

1511

12

13

Part Material

1 cross bar Stainless steel AISI 3162 guides Stainless steel AISI 3163 frame plate HDPE4 door HDPE5 reinforcement profiles Stainless steel AISI 3166 bearing house POM7 bearing Stainless steel AISI 3168 bearing ring Polymer9 spindle Stainless steel AISI 316

10 nut Bronze11 distance block HDPE12 sealing door / frame plate EPDM13 sealing penstock / concrete Neoprene14 conical socket Stainless steel AISI 31615 end stop Stainless steel AISI 31616 bare shaft Stainless steel AISI 316

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HDPE SLUICE GATE PKS

Product TBS HDPE Sluice gate type PKSApplication Valve to block a flow till door height, mostly in channel applicationStandard pressure on-seating pressure in meters water column equal to the height of the door Dh

off-seating pressure on request Operation possibilities see introduction chapter 3note 1 if a rectangular sluice gate is required with a dimension in between a hundredfold

in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followedfor instance a sluice gate with opening dimensions 315 x 475 mm will follow the outside dimensions of a gate with dimensions 400 x 500 mm (so X=400+200 and Y=2x500+400)

B.I.L.

Db=

X=Db+200

Dh=

Z=10

0H

=2xD

h+30

0 (b

are

shaf

t ø20

)H

=2xD

h+34

0 (b

are

shaf

t ø30

)

E=

W=

Y=2

xDh+

400

(bar

e sh

aft ø

20)

Y=2

xDh+

440

(bar

e sh

aft ø

30)

J=2x

Dh+

260

F=D

h+27

5

front view side view

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HDPE SLUICE GATEWITH FLUSH INVERT PKS - FI

B.I.L.

Db=

X=Db+200

Y=2

xDh+

300

(bar

e sh

aft ø

20)

Y=2

xDh+

340

(bar

e sh

aft ø

30)

W=

E=

H=2

xDh+

300

(bar

e sh

aft ø

20)

H=2

xDh+

340

(bar

e sh

aft ø

30)

J=2x

Dh+

160

Dh=

F=D

b+14

0

100

Product TBS HDPE Sluice gate type PKS-FI (flush invert)Bottom seal is made of polyurethane, the EPDM seal is placed in the frame plate andforms one continuous piece with the bottom seal

Application Valve to block a flow till door height, mostly in channel applicationStandard pressure on-seating pressure in meters water column equal to the height of the door Dh

off-seating pressure on request Operation possibilities see introduction chapter 3note 1 if a rectangular sluice gate is required with a dimension in between a hundredfold

in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followed for instance a sluice gate with opening dimensions 315 x 475 m will follow the outside dimensions of a gate with dimensions 400 x 500 mm (so X=400+200 and Y=2x500+300)


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HDPE HAND GATE PHSFOR MANUAL LIFTING

B.I.L.

1

2

3

4Db=

X=Db+200

Dh=

Z=10

0

W=

Y=D

h+17

5

75

Product TBS HDPE Hand gate type PHSApplication Valve to block a flow till door height, mostly in channel applicationStandard pressure on-seating pressure in meters water column equal to the height of the door Dh

off-seating pressure on request Materials 1 Guide Stainless steel AISI 316

2 Door HDPE3 Sealing EPDM4 Frame plate HDPE

note 1 if a rectangular hand gate is required with a dimension in between a hundredfold in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followed

note 2 Up to 0,6 M2 hand gate can be manually lifted


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HDPE HAND GATE PHSWITH LIFTING HOOKS

Product TBS HDPE Hand gate type PHSApplication Valve to block a flow till door height, mostly in channel applicationStandard pressure on-seating pressure in meters water column equal to the height of the door Dh

off-seating pressure on request Materials 1 Guide Stainless steel AISI 316

2 Door HDPE3 Sealing EPDM4 Frame plate HDPE5 Reinforcement profiles Stainless steel AISI 3166 Lifting hooks A4

note 1 if a rectangular hand gate is required with a dimension in between a hundredfold in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followed

note 2 From 0,6 M2 hand gate can not be manually lifted anymore and a lifting device in combination with lifting hooks on the door are required

B.I.L.

1

2

3

6

5

4Db =

X=Db+200

Dh

Z=10

0

W=

Y=D

h+10

0


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HDPE OVERFLOW GATE VALVE POS

9

11

15

10

87

6

16

14

1

2

3

54

12

13

Part Material

1 cross bar Stainless steel AISI 3162 guides Stainless steel AISI 3163 frame plate HDPE4 door HDPE5 reinforcement profiles Stainless steel AISI 3166 bearing house POM7 bearing Stainless steel AISI 3168 bearing ring Polymer9 spindle Stainless steel AISI 316

10 nut Bronze11 distance block HDPE12 sealing door / frame plate EPDM13 sealing penstock / concrete Neoprene14 conical socket Stainless steel AISI 31615 end stop Stainless steel AISI 31616 bare shaft Stainless steel AISI 316

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HDPE OVERFLOW GATEVALVE POS

Product TBS HDPE Overflow gate valve type POSApplication Valve to regulate the upstream water level between a minimum level (H min)

and a maximum level (H max)Standard pressure on-seating pressure in meters water column equal to the height of the door Dh

off-seating pressure on request Operation possibilities see introduction chapter 3note 1 if a rectangular overflow gate is required with a dimension in between a hundredfold

in mm, the outside dimensions of a gate with first coming hundredfold in mm will befollowed

note 2 The free overflow height (OH) between door and HDPE cover of the spindle is 190 mmnote 3 If the Db>2000 mm and Dh>750 mm an overflow gate with 2 spindles might be appliednote 4 For channel application the overflow gate valve will be executed with a complete

HDPE back plate

SBT

Db=

X=Db+300

Dh=

Z=D

h+10

0H

=2xD

h+O

H+3

10 (b

are

shaf

t ø20

)H

=2xD

h+O

H+3

50 (b

are

shaf

t ø30

)

E=

W=

OH

=

Y=3

xDh+

OH

+410

(bar

e sh

aft ø

20)

Y=3

xDh+

OH

+450

(bar

e sh

aft ø

30)

J=3x

Dh+

OH

+270

F=Z+

Dh+

OH

Hmax

Hmin


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HDPE DOUBLE OVERFLOWGATE VALVE DPOS - LIFTABLE H MIN

SBT

Db=

X=Db+300

Dh

Z=H

=3xD

h+O

H+4

10 (b

are

shaf

t ø20

)H

=3xD

h+O

H+4

50 (b

are

shaf

t ø30

)

E=

W=

J=3x

Dh+

OH

+370OH

Y=3

xDh+

OH

+510

(bar

e sh

aft ø

20)

Y=3

xDh+

OH

+550

(bar

e sh

aft ø

30)

Dh

W1

E1=

F=Z+

2xD

h+O

HB.I.L.

Hmax

Hmin

Product TBS HDPE Double overflow gate valve type DPOS - H minApplication Valve to regulate the upstream water level between a minimum level (Hmin) and a

maximum level (H max) with the upper door and the additional option to lift the lower door to "flush" the channel

Liftable Hmin means that the lower can be lifted till the position H min, so same height as upper door

Standard pressure on-seating pressure in meters water column equal to the height of the door dh.off-seating pressure not possible

Operation possibilities see introduction chapter 3note 1 if a rectangular double overflow gate is required with a dimension in between a

hundredfold in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followed

note 2 The free overflow height (OH) between door and HDPE cover of the spindle is 190 mmnote 3 If the Db>2000 mm and Dh>750 mm an overflow gate with 2 spindles might be applied


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HDPE DOUBLE OVERFLOWGATE VALVE DPOS - LIFTABLE H MAX

Product TBS HDPE Double overflow gate type DPOS - H maxApplication Valve to regulate the upstream water level between a minimum level (H min)

and a maximum level (H max) with the upper door and the additional option to lift the lower door to "flush" the channel

Liftable H max means that the lower and the upper door can be lifted till the position H max

Standard pressure on-seating pressure in meters water column equal to the height of the door dh.off-seating pressure not possible

Operation possibilities see introduction chapter 3note 1 if a rectangular double overflow gate is required with a dimension in between a

hundredfold in mm, the outside dimensions of a gate with first coming hundredfold in mm will be followed

note 2 The free overflow height between door and HDPE cover of the spindle is 190 mmnote 3 If the Db>2000 mm and Dh>750 mm an overflow gate with 2 spindles might be applied

SBT

Db=X=Db+300

Dh=

Z=H

=5xD

h+O

H+4

10 (b

are

shaf

t ø20

)H

=5xD

h+O

H+4

50 (b

are

shaf

t ø30

)

E=W=

J=5x

Dh+

OH

+370

Dh+

OH

Y=5

xDh+

OH

+510

(bar

e sh

aft ø

20)

Y=5

xDh+

OH

+550

(bar

e sh

aft ø

30)

Dh=

W1=E1=

F=Z+

3xD

h+O

H

B.I.L.

Hmax

Hmin


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HDPE FLAP WEIR PKLS

B.I.L.

Dh+40

Db=X (see table)

Y (s

ee ta

ble)

85

75

132

Dh

min

.165

W1 W2

50

199 12

4 3

56

Product TBS HDPE Flap weir type PKLSApplication Valve to regulate the upstream water level between a minimum level and a

maximum levelStandard pressure maximum pressure in meters water column equal to the height of the door DhMaterials 1 Segment HDPE

2 Frame Stainless steel AISI 3163 Door HDPE4 Reinforcement profiles Stainless steel AISI 3165 Gear Aluminium 6 Seal Neoprene

Overflow height Width Height Db (max) Low High

Dh X Y W1 W2

=< 500 mm Db+350 mm 1030 3000 840 780

500 < Dh=< 750 mm Db+350 mm 1280 3000 1090 1030

750 < Dh=< 1000 mm Db+400 mm 1565 2000 1375 1315

1000 < Dh=< 1250 mm Db+400 mm 1815 2000 1625 1565


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HDPE STOP LOG PSS

Product TBS HDPE Stop log type PSSApplication Valve to regulate / block the upstream water level between a minimum level and a

maximum levelStandard pressure on- and off-seating pressure in meters water column equal to height of stop log DhMaterials 1 Logs HDPE

2 Frame HDPE3 Weight Stainless steel AISI 3164 Reinforcement profiles Stainless steel AISI 3165 Seal EPDM

Db=

X=Db+200D

h10

0

127

75

Y+7

5 (r

equi

red

spac

e fo

r gr

outin

g in

)

X+150 (required space for grouting in)

height/widthsmall big

75

2

1

1

3

1

4

1

4

5


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HDPE FLOAT VALVEPVI - SINGLE FLOAT

1

2

4

5

6

3

7

8

8

Q (m3/s)

G=

1 /4

G

Y=

X= W=

∆H=

Product TBS HDPE Float valve type PVI with single floatApplication Valve to regulate automatically the downstream water level

Single float design is for limited installation spaceDesign criteria PVI will be specifically designed on the basis of difference between water level

upstream and downstream (∆H) and capacity to pass through the opening (Q in M3/s)

Materials 1 Float HDPE2 Threaded bar Stainless steel AISI 3163 Connecting profile Stainless steel AISI 3164 Seating HDPE5 Sealing EPDM6 Door HDPE7 Body HDPE8 Adjustment nuts Brass


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HDPE FLOAT VALVEPVI - DOUBLE FLOAT

Product TBS HDPE Float valve type PVI with double floatApplication Valve to regulate automatically the downstream water levelDesign criteria PVI will be specifically designed on the basis of difference between water level

upstream and downstream (∆H) and capacity to pass through the opening (Q in M3/s)

Materials 1 Float HDPE2 Threaded bar Stainless steel AISI 3163 Connecting profile Stainless steel AISI 3164 Seating HDPE5 Sealing EPDM6 Door HDPE7 Body HDPE8 Adjustment nuts Brass

1

2

4

5

6

3

7

8

8

Q (m3/s)

G=

W=X=

Y=

∆H=

1 /4

G


tbs rsoest bbv water level regulation · tbs rsoest bbv water level regulation specialised in water...

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