A few days ago, the China Electric Power Enterprise Federation released the “National Electric Power Supply and Demand Situation Analysis and Forecast Report for the first three quarters of 2013â€. According to the report, China’s total annual installed capacity is expected to reach 91 million kilowatts. By the end of the year, the total capacity of the country’s power generation equipment will reach 1.23 billion kilowatts, which is expected to surpass the United States as the country with the largest installed capacity in the world.
According to the statistical data of the Planning and Statistics Department of the China Radio and TV Administration, the installed capacity of China’s newly added power generation in the first three quarters of this year was approximately 554.57 million kilowatts. Among them, new thermal power generation capacity reached 24.02 million kilowatts, up 7.2% year-on-year; newly added hydropower installed capacity was 18.67 million kilowatts, up 12.4% year-on-year; new installed capacity of wind power was 6.47 million kilowatts, up 23.6% year-on-year; nuclear power added 2.21 million kilowatts of newly installed power, up Growth of 16.7%. The country’s total installed power generation capacity of 6000 kW and above increased by 9.5% year-on-year, and the power supply capacity was sufficient. Analysis of power generation data showed that hydropower generation in the third quarter was negative. The utilization hours of equipment in the first three quarters decreased by 150 hours year-on-year; thermal power generation achieved double-digit growth in the third quarter and equipment utilization hours in the first three quarters narrowed to 6 hours year-on-year. Wind power generation maintained rapid growth and equipment utilization hours increased to 138 hours from the same period last year.
According to Wang Zhixuan, secretary-general of the China Electro-Optical Union, China’s total electricity consumption for the whole year this year reached 5.31 trillion kWh, a year-on-year increase of approximately 7.0%. In the fourth quarter, the growth rate of electricity consumption in the whole society will be lower than that in the third quarter. The growth in electricity consumption will be between 6.5% and 7.5%, and it will increase around 7.0% throughout the year. In the first three quarters of the year, the national economy was generally stable, with an overall balance of electricity supply and demand across the country and a peak of security and stability in the summer. The electricity consumption of the entire society increased by 7.2% year-on-year, and the growth rate increased by 2.4 percentage points over the same period of the previous year, of which the growth rate was 10.9% in the third quarter; the first industry electricity consumption increased by 0.1% year-on-year; the second industry electricity consumption increased by 6.5%, lower than the national The average growth rate, the third industry electricity consumption growth of 10.9%, continued the momentum of rapid growth, urban and rural residents living electricity growth of 8.9%, the third quarter growth rate increased significantly to 17.6%. The power consumption structure continues to optimize.
The report also predicts that the domestic economy will continue to maintain steady growth in the fourth quarter, and the growth rate may be slightly lower than the third quarter. Taking into account the high base of electricity consumption in the fourth quarter of last year, the national solution to the contradictions of serious overcapacity in the five major industries such as steel, cement, electrolytic aluminum, flat glass, and ships, and the impact of temperature, it is expected that the growth rate of electricity consumption in the entire society will be higher in the fourth quarter. The third quarter fell.
CEC believes that China's rapidly growing wind power equipment utilization rate has been gradually increased since 2012. The number of hours of wind power generation in the first nine months of the year has increased significantly by 138 hours year-on-year, and the “discarded wind†situation has improved. However, Ouyang Changyu, deputy secretary-general of China United Electric Power Co., Ltd. was not optimistic about the "discarding of wind" this winter and the "discarding" situation in some areas. He suggested that we must optimize the layout of wind power and photovoltaic power generation, especially to encourage decentralized development and overall planning and elimination. The Na’a market and supporting external transmission lines have been constructed to expedite the resolution of “discarding wind and discarding lightâ€.
In view of the relevant conditions, the CEC suggested that the preparatory work plan for winter peak seasons should be completed to ensure the safe and stable operation of the power system; overall arrangements should be made for natural gas supply to ease the contradiction between the price of electricity and electricity, optimize the distribution of natural gas power generation, and optimize wind power and photovoltaic power generation. Layout, accelerate the resolution of abandoned winds and abandon the light; speed up the rationalization of electricity price formation mechanism and promote the scientific development of the industry; study and formulate electric energy replacement strategic plan as soon as possible and accelerate the implementation of electric energy substitution projects.
Pillow blocks are advanced applied in places with simple equipment and spare parts, such as agricultural machines, convey system or construction machines. One unit of pillow block consists of deep groove ball bearings with spherical outer rings closed in double sides and a housing made by gray cast iron or punches steel.
A Pillow Block Bearing (Plummer block) is a mounted bearing used to provide support for a rotating shaft with the mounting surface on a parallel line with the axis of the shaft.
Pillow block bearings are generally self-lubricating.
Pillow block bearings are a form of mounted bearing used to provide load support for a rotating shaft axis. The bearing housing mounts to a surface parallel to the shaft axis. Selection of the appropriate bearings can be accomplished based on the shaft size and the radial and thrust load requirements. Pillow block bearings are designed to support a shaft: the mounting surface is on a parallel line with the axis of the shaft. Elongated bolt holes in the base or feet of the unit allow for some adjustment and easy mounting of the pillow block bearing.
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