Production of high temperature and Instrument valve pressure valve metal seal valve for use in supercritical thermal power units

Since the development of materials and manufacturing technology, pipeline ball valves have been used as a cutting device used in high temperature and pressure conditions. Production of high temperature and pressure valve metal seal valve in supercritical thermal power units are used, replacing the original cut-off valve and the valve, its bubble-tight performance and longer life than traditional globe valves and gate valves. High parameters and high-performance steel ball valve body has not meet the requirements, so a better toughness, higher reliability of  Stainless steel needle valve  body is very necessary. Structural design forged steel ball valve forged steel valve body design first thing to consider forging process, namely the forging process less than a block, a small margin, shape and size close to  Instrumentation ball valve , material utilization. Consider the economy, as far as possible in the general process of forging equipment, forging equipment because of the large and special use fee is high, while the cost of mold manufacture and use is also more expensive. Forged steel ball valve has two and three-piece. Two-piece body structure more suitable for forging, the body needs to squeeze in a closed die forging, large deformation force requirements, require large forging equipment.

Centrifugal fans are an important part of the oil cooling system for a high-performance helicopter

Centrifugal fan is an important part of high-performance helicopter oil cooling system, which drive the cold air through the oil cooler, took over the transmission system cooling oil heat, ensure the normal operation of helicopter main reduction system.  Instrumentation ball valve  fan performance the quality of the oil radiator as well as the efficiency of the entire oil system plays a vital role as an engine oil cooling system components helicopters, centrifugal fan with low flow, high pressure, high speed, small size Features This article based on the characteristics of a  Instrument valve manifold  a fan, a detailed analysis of the design parameters of the basic structure and calculation, blade profile, the preparation of the versatility of the design software, the use of technology to achieve the automatic generation of the impeller three-dimensional graphics, and gives the design instance.