ASME Standard Customized Specification Pin Type Boiler Water Wall
Panels Water Wall Tubes In Boiler
Product Description
Pin type water wall
It is also called bayonet water wall. It is required to weld a
certain length of round steel on the surface of the bare tube, and
use pins to lay refractory coating firmly on the water wall to form
a fire protection belt, a slag pool and a slag melting section for
liquid slag discharging furnace as well as a cyclone drum of the
cyclone furnace.The water wall of inner threaded pipe is a pipe
with single or multiple spiral grooves on the inner wall of the
pipe. Internal threaded tubes are used in the high heat load zone
of once-through boilers,sub critical parameters and forced
circulation boilers or in the water wall sections with high
vaporization rate. When the working fluid flows in the inner
threaded tube, strong disturbance occurs, which causes the water
pressure in the steam water mixture to the tube wall and forces the
bubbles away from the wall to be carried away by the water, thus
destroying the formation of the wapor film, preventing the boiling
heat transfer from deteriorating, and lowering the temperature of
the tube wall of the water wall panel.
Parameter
| Name | Membrane water panel |
| Material | Carbon steel,Alloy,Stainless steel |
| Tube size | Φ38 - 76 mm, or as required |
| Standard | ISO , ASME |
| Model | Studded |
| Application | Istallable around the boiler combustion chamber |
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.
Features
1. Strength calculation report with applied materials information;
2. 100%NDT(non-destructive inspection) report of steel plate, tube
and welding rod;
3. 100%X-ray inspection report (welding seam): to ensure the
quality of the entire boiler;
4. Hydraulic test report: ensure the standard working pressure and
safet
Quality Control
1. Fabrication area of 200,000 square meters
2. 80 Engineers
3. 200 Coded welders
4. 30 Licensed Inspectors(NDT Level-III instructors)
5. Class-A Licenses for Design and Manufacture Boiler
6. ISO 9001:2015 Quality System
7. ASME Certificate of Power Boilers
8. ASME 'S','U' and NB stamp authorization
Certifications
Company Indroduction
Established in 1985,Zhangjiagang Hua Dong Boiler Co.,Ltd.(trading
as HD Boiler),produces power plant; industrial; waste heat; waste
incineration; biomass; organic heat carrier and electric steam
boilers. Coupled with a comprehensive range of heating surfaces, HD
Boiler brings to the market a unique service including boiler
design , fabrication, installation, maintenance and replacement of
boiler pressure parts.
