As of the end of May 2011, Qinghai Province has achieved a grid capacity of 30 MW for grid-connected power generation and will reach 55 MW during the year. The construction of photovoltaic power plants will enter the fast lane. According to the latest “10 million kilowatts of solar photovoltaic power generation plan in the Qaidam Basinâ€, Qinghai Province plans 38 solar power stations in the Qaidam Basin, with a total size of 20 million kilowatts and an area of ​​2,000 square kilometers. Yang Lanxue, a senior engineer of the Energy Bureau of the Development and Reform Commission of Qinghai Province, said that among the many planned power stations, Qinghai Province has approved 12 solar photovoltaic power stations with a capacity of 195 megawatts. The grid-connected power generation capacity has been 30 megawatts, of which CGNPC Solar Power Co., Ltd. Xitieshan 10 MW photovoltaic power station has all been connected to the grid for power generation. The accumulated investment was 1.1 billion yuan. In the first quarter of 2011, an investment of 700 million yuan was completed. Around solar power generation, Qinghai Province has formed a new industrial chain of new materials and new energy. In January 2009, the Asian Silicon Industry annual production of one thousand tons polysilicon project was successfully put into production in the Xining (National) Economic and Technological Development Zone. The first phase of the project will build an annual output of 1,000 tons of polysilicon, with a total investment of 99.8 million US dollars. With the success of the Silicon Asia (Qinghai) Co., Ltd., the Yellow River upstream hydropower development company, and Qinghai Huasil Energy Co., Ltd. successfully settled in the Xining Economic and Technological Development Zone, marking the formation of a solar photovoltaic industry system based on solar silicon materials in Qinghai Province. At present, there are more than 20 manufacturers of solar silicon materials in Qinghai Province. Din2634 Pn25 Welding Neck Flange
DIN2634 flange have two holes, can wear bolt, make the two flange tight even.Between the gasket seal.It is the connection of the two pipes, fittings or equipment, fixed on a flange, a first between the two German standard flange, and flange pad, bolt fastening together, complete the connection.According to the connection parts of flange and flange can be divided into the container.This product is mainly used in oil and gas pipeline engineering, the natural gas pipeline engineering, chemical plants, municipal engineering, sewage treatment, power plant, shipbuilding, pharmaceutical, dairy products, beer, beverage, water conservancy and other industries.DIN2634 flange will not produce corrosion, pitting, corrosion or wear and tear, play an important role and value in use, used in different industries and fields.
Butt welding flange is two large diameter pipe connection device, usually two flange and number of the bolt, its plastic strength is low, after adding suitable amount of carbon becomes hard, plastic lower strength enhanced.Connection it may need to bear very high tensile, compression, torsion and shear strength.Butt welding flange conveniently, manufacture simple, low cost, widely used, but with poor rigidity, therefore shall not be used for supply and demand, flammable, explosive and high vacuum degree requirements of the chemical process piping systems and height, extremely dangerous situations.Sealing surface type plane and surface.Butt welding flange welding electrode consumption is much, can not stand high temperature, high pressure, repeated bending and temperature fluctuations.
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