Boiler X-ray inspection is based on the difference in the absorption of X-rays by different material thicknesses. The X-ray inspection of boiler is to show the internal defects of materials, parts and welds from the film and image by using the X-ray perspective photography and real-time imaging of industrial television. Such as crack, shrinkage cavity, air hole, slag inclusion, undissolved, incomplete penetration and etc. The quality of materials or products can be evaluated by observing the nature, size and position of defects, so as to prevent major accidents caused by internal defects and poor processing of materials.
A boiler hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and leaks. The main purpose of the hydrostatic test is to identify the tightness and compressive strength of the pressure components of the boiler, including but not limited to welding lines, flange joints and tube expansion joints, and visually observe the deformation of the pressure components. Practice has proved that the boiler hydrostatic test can detect defects in boilers, and the corresponding measures can be taken accordingly. Therefore, it is an important step and means to ensure the safe operation of the boiler.
Vietnam has abundant coal resources, including anthracite, bituminous coal, lignite, and peat. Vietnam anthracite has the characteristics of high calorific value, low ash, low nitrogen, low phosphorus and low sulfur. ZOZEN SZL series coal-fired boiler has wide fuel adaptability and sufficient fuel combustion, and has established an excellent reputation in the Vietnamese market.
Recently, the expert group from National Industrial Boiler Quality Supervision and Inspection Center visited ZOZEN, and the two sides conducted in-depth exchanges on issues such as the future development trend of the industrial boiler industry. Led by Mr. Zhang Guoping, General Manager of ZOZEN, they visited the modern production base of ZOZEN.
This kind of heater adopts three pass circular tube design for sufficient heating surface, and the waste heat boiler and energy-saving device disposed at the tail of the heater can greatly reduce the loss of thermal energy, the thermal efficiency can be as high as 95% or more. Advanced low NOx burner can achieve NOx emissions below 30mg/Nm³. And the operation of the thermal oil heater can realize full automatic control, and can automatically adjust the combustion, high tank level, outlet temperature and flow to ensure the safe operation. This series of thermal oil heaters are favored by all walks of life in the chemical, rubber and food industries.
ZOZEN YY(Q)L series vertical thermal oil heaters adopt special processing technology, and have wide fuel adaptability, suitable for natural gas, coal gas, blast furnace gas, heavy oil, light oil, etc. They have the advantages of safety, high efficiency, energy saving and environmental protection, and the thermal efficiency is over 95%.
ZOZEN SZL series coal-fired (biomass-fired) boilers have wide fuel adaptability, applicable to a wide range of fuels including all kinds of coals and biomass particles; they have the charactics of sufficient output, safety, high effciency and high degree of automation. Meanwhile, this series of boilers is equipped with an advanced control system, which is safe and worry-free.
For decades, ZOZEN boilers has always guided the manufacturing quality of industrial boilers and established the technological standards of blanking digitization, automation of welding and assembly moulding. The full-automatic CNC tube bending production line greatly improves work efficiency and quality, providing a powerful guarantee for creating first-class products.
