Eco - Friendly Superior Header In Boiler For Industry And Power Station

Eco-friendly Superior Boiler Manifold Headers for Industry and Power Station

 
Product Information
 

 
In order to improve the efficiency of boilers, cylindrical boilers are gradually developed into tubular boilers to increase the heat transfer area.
The water from the pot barrel flows into the lower box through the downspout, which is distributed to each tube bundle. The water in these tube bundles continuously absorbs heat energy and collects in the upper box before flowing back into the pot barrel.
We call the upper and lower box box or header box.
Header (also known as header), is an important part of the boiler, divided into upper header and lower header.

 
Functions 
 
The collecting box is a kind of tube for mixing working substance of boiler and ensuring uniform heating of working substance.
Industrial boiler furnace wall is usually composed of rows and rows of tubes (water wall) together, but boiler huge volume, complicated structure, cannot guarantee that all the working medium in the pipe of heat absorption capacity is the same, different parts of heat absorption differs a lot, install header can let each pipe working medium inside converge here, the redistribution to the next level in the tube, so that we can reduce the thermal deviation, make the working medium heat, cooling flow, boiler, the boiler thermal efficiency are optimized to improve;
 
In addition, the size, quantity and layout of the pipes in the upper, middle and lower parts of the boiler are different.
 
Attention
 

The pressures and temperatures that headers have to withstand depend on the component to which they are connected. A header connected to an economizer or to water wall panels is subject to less severe requirements on the material than a header connected to superheaters or reheaters.

Depending on the temperature and pressure of headers, Vallourec supplies tubes in carbon steel to high-alloy ferritic steels such as T/P91 or T/P92, with sizes ranging from 88.9 mm to 406.4 mm.

 
Specification
 

Certification

Company Introduction

Hua Dong holds the manufacturing licenses for Grade A boilers and Grade A1&A2 pressure vessels issued by Chinese General Administration of Quality Supervision, Inspection and Quarantine; also it holds the "S" and "U" "NB" stamps issued by American Society of Mechanical Engineers; meanwhile, this Company has passed the certification of ISO9001, SO3834, EN12952 Quality Management System.

Hua Dong Boiler Co., Ltd. is a high-tech enterprise specialized in manufacturing boilers.

Established in early 1985s, has two manufacturing bases, this company covers 400,000 ㎡ with fixed assets amounting to USD 110,000,000.

There are 1100 employees including 150 technicians and 600 coded welders.