Sa210 Sa192 Boiler Water Cooling Wall Pipes For Power Plant
Brand Name:ORL Power
Certification:ISO9001/SGS/TUV/ASME/EN
Model Number:Customization
Minimum Order Quantity:1 Set/Sets 10tons
Delivery Time:50~100 Days
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Product Details
Sa210 Sa192 Boiler Water Cooling Wall Pipes For Power Plant
Website:www.orlpower.com
Our membrane water wall are manufactured using high grade raw
material and contemporary production equipment at our advanced
manufacturing unit. The offered range is available in various
sizes, shapes and specifications, as per the requirements of our
esteemed clients. Further, these are delivered to the clients
within promised time frame.
Product Description
Advantages of Membrane Water Wall
1). To guarantee the leakproofness of furnace wall and reduce the
air leak of combustion chamber.
2). To achieve the full water cooling of combustion chamber, and
the boiler accessories membrane water wall is benefit to prevent
coking under the condition of supplemental firing.
3). The thermal storage capacity is small, the warming of
combustion chamber is fast and the cooling is also fast, which
could shorten the cooling time of boiler’s start and furnace shut
down.
4). It is good to adopt top supported water cooled wall and it
could reduce the load of boiler framework, which is benefit to
overhang.
5) Compared with the bare tubes, the membrane water wall improves
the heat absorption capacity of tubes.
6) The factory direct boiler membrane water wall could improve the
Preliminary combination degree of boiler parts and reduce the
installation workload.
Application
Boiler water walls are membrane walls that are made of tubes welded
together with or without a strip of metal in between. These walls
form the enclosure of the coal combustion chamber. Water wall tubes
are also referred to as the evaporator section; they contain water
mostly in liquid form which gradually evaporates as it rises in the
boiler.
Challenges
As the water wall tubes form a lining along the whole boiler, they
are submitted to a temperature gradient of 300 °C to 500 °C between
the bottom section of the boiler and its top. To facilitate
fitting, the panels in the boiler should preferably be made of
steel grades that do not require any post-weld heat treatment.
Vallourec supplies tubes for water walls in all grades, from carbon
steel to advanced low-alloy steel, with outside diameters ranging
from 31.8 mm to 63.5 mm.
Materials
BS 3059 Grade 440 seamless carbon steel tubes.
Welding Processes / Procedures
STT II – Surface Tension Transfer (STT) Process with certified
& tested weld procedures.
TIG welding process.
Fabrication Standards / National Codes
AS1228 – Power Boilers
AS4458 – Pressure Equipment Manufacture
AS4041 – Pressure Piping
AS4037 – Pressure Equipment – examination & testing
Quality Assurance Requirements
Material certification for all materials
Inspection and Test Plan (ITP)
100% radiography on butt weld joints
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Sa210 Sa192 Boiler Water Cooling Wall Pipes For Power Plant
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