Blowdown Vessels - Cochran Datasheet[1].pdf · across to intersect the blowdown size, the vessel...
2
Founded more than 130 years ago and operating in over 100 countries around the world, Cochran are the internationally acknowledged experts in the provision of packaged steam, hot water generation and heat transfer systems utilising shell boiler designs, combustion and ancillary technology constructed to meet the most stringent UK, European and international standards. Cochran offers the range and flexibility to deliver solutions that match the application; backed-up by a complete package of technical advice and design and manufacture, from the smallest system through to the planning, management and delivery of the largest turnkey projects. The total Cochran offering extends to include servicing, spares and planned maintenance solutions, combined with in-depth technical support throughout the long operational life of a Cochran boiler and it’s ancillary equipment. Blowdown Vessels E G A B C D Vent Connection 1/2 BSP Pressure Gauge 3/4 BSP Cooling Water Inlet 1 BSP Temperature Pocket F Overflow Connection 2 BSP Drain Three Inlet Connections e T Te 1 BSP ock e atur emper 1 BSP G ater Inlet Cooling 3/4 BSP ock P et ocke ater Inlet W W Gauge e essur Pr 1/2 BSP e 1/2 BSP E ent Co V e F nnection Three Inlet Thr Connections Thr Connections ee Inlet Thr Overflow Overflow Connection Overflow Connection Overflow B A C ain Dr 2 BSP D Every Cochran Blowdown Vessel is designed and built to satisfy PED (Pressure Equipment Directive) requirements and is CE marked accordingly. In addition, each vessel meets the requirements of the UK’s stringent Health and Safety Guidance Note PM60, as well as Annex D of BS EN12953-6. OOperational Capability: Cochran Blowdown Vessels are designed for a pressure of 7 barg and a temperature of 171˚C. OCoating: Cochran Blowdown Vessels are finished in a robust, heat-resistant aluminium paint. OConnections: Flanged connections are in accordance with BSEN1092 with a rating of PN16.
Transcript of Blowdown Vessels - Cochran Datasheet[1].pdf · across to intersect the blowdown size, the vessel...
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Founded more than 130 years agoand operating in over 100 countriesaround the world, Cochran are the
internationally acknowledged experts in the provision of packaged steam, hot
water generation and heat transfersystems utilising shell boiler designs,combustion and ancillary technology
constructed to meet the most stringent UK, European and international standards.
Cochran offers the range and flexibility to deliversolutions that match the application; backed-upby a complete package of technical advice and
design and manufacture, from the smallestsystem through to the planning, management
and delivery of the largest turnkey projects.
The total Cochran offering extends to includeservicing, spares and planned maintenancesolutions, combined with in-depth technical
support throughout the long operational life ofa Cochran boiler and it’s ancillary equipment.
Blowdown Vessels
E
G
A B C
D
Vent Connection
1/2 BSPPressureGauge
3/4 BSPCoolingWater Inlet
1 BSPTemperaturePocket
F
OverflowConnection
2 BSPDrain
Three InletConnections
eTTemper1 BSP
ockeaturemper
1 BSP
GG
ater InletCooling3/4 BSP
ockP etocke ater InletWW
GaugeeessurPr
1/2 BSPe
1/2 BSP
E
ent CoVVent Connection
F
nnection
Three InletThrConnectionsThr
Connectionsee InletThr
OverflowOverflowConnectionOverflowConnectionOverflow
BA C
ainDr2 BSP
D
Every Cochran Blowdown Vessel is designed and built to satisfy PED (PressureEquipment Directive) requirements and is CE marked accordingly. In addition,each vessel meets the requirements of the UK’s stringent Health and SafetyGuidance Note PM60, as well as Annex D of BS EN12953-6.
OOperational Capability: Cochran Blowdown Vessels are designed for apressure of 7 barg and a temperature of 171˚C.
OCoating: Cochran Blowdown Vessels are finished in a robust, heat-resistant aluminium paint.
OConnections: Flanged connections are in accordance with BSEN1092with a rating of PN16.
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+44(0) 1461 202 111www.cochran.co.ukCochran Ltd, Newbie Works, Annan, Dumfries & Galloway, UK DG12 5QU.
Whilst this information is given in good faith, no warranty or representation is given concerning such information which must not betaken as establishing any contractual or other commitment binding upon Cochran Group Ltd Company or any of its subsidiaryassociated companies. ©2014 Cochran Ltd. Designed/produced by CarneWhitney.com 01228 596 895.
Reference: Blowdown Vessels 08/14
To select correct blowdown vessel size, the following information is required:
OBoiler Pressure.
OBlowdown line size.
OLength of blowdown line between boiler and blowdown vessel, i.e. the equivalent straight length taking account of bends and valves in the line.
Depending on the length of your blowdown line, select one of the charts below then select the boiler pressure on the vertical axis and move across to intersect the blowdown size, the vessel size is then taken as the area containing the intersection.
Examples
For a boiler of 170 PSIG with a 32NB blowdown line and an equivalent straight pipe length greater than 7m a Type 4 is required.
If the blowdown line is less than 7m a Type 5 would be required.
Blowdown Vessels
1
2
The above tables are based on a maximum Blowdown duration of 20 seconds. A typical main Boiler Blowdown duration would be 5 seconds.
400
Sizing a Blowdown Vessel with aBlowdown Line less than 7m Long
Type 3
Type 4
Type 5
Type 6
Type 7
Blowdown Line Size (NB)
Boile
r Pre
ssur
e (P
SIG
)
Boile
r Pre
ssur
e (B
arG
)
350
300
250
200
150
100
5025 32 40 50
27.6
24.1
20.7
17.2
13.8
10.3
6.9
3.4
2
400
Sizing a Blowdown Vessel with aBlowdown Line greater than 7m Long
Type 3
Type 4
Type 5
Type 6
Type 7
Blowdown Line Size (NB)
Boile
r Pre
ssur
e (P
SIG
)
Boile
r Pre
ssur
e (B
arG
)
350
300
250
200
150
100
5025 32 40 50
27.6
24.1
20.7
17.2
13.8
10.3
6.9
3.4
1
Blowdown Vessel Type 3 Type 4 Type 5 Type 6 Type 7
Dimensions (mm)
A - Overall Height 1845 1920 1995 2105 2255
B - Height to Inlets 1345 1380 1415 1470 1545
C - Height to Outlet 1080 1125 1165 1220 1295
D - Height to Drain 358 367 368 367 367
E - Standout of Inlets 330 405 485 560 705
F - Standout of Outlet 330 405 485 560 705
G - Vessel Diameter 465 610 745 905 1205
Connection Details (mm)
Inlet Size 3 * 50 3 * 50 3 * 50 3 * 50 3 * 50
Outlet Size 80 80 100 100 150
Vent Size 100 100 150 150 200
Weights (kgs)
Empty 220 260 390 470 820
Full of Water 425 633 967 1353 2503
Operating Weight 337 478 733 891 1431
