Surge Bladder Vassel

SURGE BLADDER VASSEL FOR SEA WATER & WASTE WATER

A.R.I. FLOW CONTROL ACCESSORIES Ltd. www.arivalves.com [email protected] Tel: 972-4-6761899

MAINTENANCE INSTRUCTIONS D-070 EnM-D070-10

gas charge (between the metal and the bladder)

manometer

inflation valve

epoxy anti corrosion internal coating

removable foodgrade butyle bladder containing the water

level gauge (option)

removable anti extrusion grid

piping connexion to the network

A.R.I.

FLOW CONTROL ACCESSORIES Ltd.

www.arivalves.com [email protected] Tel: 972-4-6761988

A.R.I.


TECHNICAL SPECIFICATION

ID No. :

TITLE:


Quality Assurance

HYDROCHOC

SPT 0171-03-GB

SURGE BLADDER VESSEL TYPE

Page 1 sur 3

1- BLADDER VESSELS

A bladder surge vessel has the same mission with regard to surge control as the traditional compressor vessel. The objective of this pneumatic solution is to simplify the method of r egulation. In a similar way to a vessel controlled by compressors, a pre-charge pressure is calculated to give the required elasticity to push the water into the system following a pump shut down or power cut. The major difference being that the liquid is contained within a rubber bladder (compatible with drinking water). Therefore, as there is no contact between the compressed air and the water there is no dissolution. There is thus no requirement for a permanent regulation system including compressors, etc...

Once the vessel has been commissioned and the correct precharge has been introduced, the vessel will operate automatically emptying when called upon and refilling with the return waves until naturally refinding its steady state balance. Charlatte have been successfully manufacturing bladder vessels for over 30 years form 8 to 80000 litres.

2 - CONCEPTION OF A BLADDER VESSEL

The vessel can either be horizontal or vertical. It is constituted of a steel vessel containing a rubber bladder made from butyl rubber, (suitable for use with drinking water) and a flanged connection pipe equipped with anti-extrusion grill. The vessels are treated internally with food quality epoxy paint as corrosion protection and externally to client specification. In order to verify the level in the vessel it is normally equipped with a level indicator as well as a manometer to verify the initial precharge pressure. If hydraulically required the vessel will be equipped with a non return valve with an incorporated bypass in order to kill the over pressure by consuming the energy of the flow reversal.

A.R.I.



ID No. :

TITLE:


Quality Assurance

HYDROCHOC SURGE BLADDER VESSEL TYPE

SPT 0171-03-GB

Page 2 sur 3

3 - OPERATION

The installation of such a surge vessel is very simple, but must be performed with care. If well done, future checking of the vessel will be very easy.

3.1 Initially the precharge pressure must be adjusted to the value resulting from the hydraulic analysis (prechage can be either compressed air or nitrogen). At this stage the bladder contains no volume at all.

3.2 When the gate valve is opened the water will enter the vessel under static conditions, and begin to compress the gas (static pressure is always higher than precharge pressure)..

3.3 The water entering the vessel will further compress the precharged gas until a balance between the liquid and the compressed gas is reached.

A.R.I.




Quality Assurance ID No. :

TITLE:

HYDROCHOC SURGE BLADDER VESSEL TYPE

3.4 Immediately after a pump stop the pressure in the line will start to decrease ant the elastic energy in the vessel will discharge the water from the vessel into the line.This prevents dangerous low pressure along the pipe work.

3.5 As the pressure way become very low, the flow will reverse, this will then enter into the vessel via a reduced diameter ( drilled non return valve or bypass) if hydraulically required. Several oscillations may occur before static state is reached.

3.6 When the pumping station will restart, the vessel will continue to fill until dynamic steady state is reached and it is then once again prepared for the next pump stop.

SPT 0171-03-GB

Page 3 sur 3

A.R.I.



inflation valve

removable bladder specially reinforced for raw or sewage water . It contains the gas charge

removable anti extrusion grid which avoids the bladder going outside

epoxy anti corrosion internal coating

piping connection to the network

A.R.I.




A.R.I.


REF

TITLE:


Quality Assurance

E.U.V.

SPT 0176-04-GB

SURGE BLADDER VESSEL FOR RAW AND WASTE WATER

Page 1 sur 3

1- BLADDER VESSELS

A bladder surge vessel has the same mission with regard to surge control as the traditional compressor vessel. The objective of this pneumatic solution is to simplify the method of regulation, given the difficulty in effective level control with waste water. As in the case of a vessel controlled by compressors, a pre-charge pressure is calculated to give the required elasticity to push the water into the system following a pump shut down or power cut. The major difference being that the air is contained within a rubber bladder. Therefore, as there is no contact between the compressed air and the liquid there is no dissolution. There is thus no requirement for a permanent regulation system including compressors, etc...

Once the vessel has been commissioned and the correct precharge has been introduced, the vessel will operate automatically emptying when called upon and refilling with the return waves until naturally refinding its steady state balance. Charlatte manufacture raw/waste water bladder vessels form 50 to 50000 liters.

2 - CONCEPTION OF A BLADDER VESSEL FOR RAW/WASTE WATER.

This type of vessel is vertical. It is constituted of a steel vessel containing a rubber bladder with a protective coating resistant to aggressive waste water, and a flanged connection pipe equipped with anti-extrusion grill. The vessels are treated internally with Epoxy paint as corrosion protection and externally to client specification.


A.R.I.



Quality Assurance REF

TITLE:

E.U.V.

SPT 0176-04-GB


Page 2 sur 3

3 - OPERATION

The installation of such a surge vessel is very simple, but must be performed with care. If well done, future checking of the vessel will be very easy.

3.1 Initially the precharge pressure must be adjusted to the value resulting from the hydraulic analysis. At this stage the bladder occupies the full volume of the tank...

3.2 When the gate valve is opened the water will enter the vessel under static conditions, and begin to compress the gas (static pressure is always higher than precharge pressure)...

3.3 The water entering the vessel will further compress the precharged gas until a balance between the liquid and the compressed gas is reached.


A.R.I.



Quality Assurance REF

TITLE:

E.U.V.

SPT 0176-04-GB


3.4 Immediately after a pump stop the pressure in the line will start to decrease and the elastic energy in the vessel will discharge the water from the vessel into the line. This prevents dangerous low pressure along the pipe work.

3.5 As the pressure may become very low, the flow will reverse, this will then enter into the vessel. Several oscillations may occur before static state is reached.

3.6 When the pumping station will restart, the vessel will continue to fill until dynamic steady state is reached and it is then once again prepared for the next pump stop.

Page 3 sur 3

Range

The Hydrochoc sewage bladder vessel is a hydropneumatic surge vessel designed to rapidly give large flow to the system it protects against transients due to a cut off of the pumping station when the effluent is heavily charged or fibrous.

waste water

Anti water hammer

EUV 3000 to 35000 L

PAINT

REINFORCED BLADDER

Epoxy paint without solvent, colour white, thickness 100 microns. Polyurethane lacquer, External. colour yellow and anti corrosion polyurethane finishing thickness 50 microns. Internal.

Interchangeable.

M ANUFACTURING

WARRANTY

PACKING

Not including parts subject to wear an tear and subject to use under normal conditions.

Craddles.

TO CODAP

View from underside

The dimension shown are indicative and can be modified without warning.

Capacity

ØD

(mm)

Height

P

T

Size A

Size B

Size C

Davit

3000

1200

H 3800

4000

1200

4100

1050

26

150

125

1370

No

5000

1500

3500

1300

26

150

178

1670

No

6000

1500

4300

1300

26

150

178

1670

No

7000

1500

4800

1300

26

150

178

1670

No

8000

1500

5300

1300

26

150

178

1670

No

9000

1900

4500

1700

26

150

178

2070

Yes

9000

2100

3500

1800

26

150

276

2270

Yes

10000

1900

4900

1700

26

150

178

2070

Yes

10000

2100

3800

1800

26

150

276

2270

Yes

12000

1900

5600

1700

26

150

178

2070

Yes

12000

2100

4400

1800

26

150

276

2270

Yes

15000

2100

5300

1800

26

150

276

2270

Yes

20000

2500

5000

2000

26

500

500

2670

Yes

25000

2500

6000

2000

26

500

500

2670

Yes

30000

3000

5400

2550

26

500

500

3170

Yes

35000

3000

6100

2550

26

500

500

3170

Yes

A.R.I.

1050

26

150

125

1370

No



Surge Bladder Vassel

Recommend Documents