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1. Bear the load, transverse force and longitudinal horizontal force transmitted from the rail, and distribute them evenly on the track bed;
2. Connect the two rails together to fix the rail position and keep a certain distance (gauge);
3. Fix the direction of the railway so that the railway will not have longitudinal and transverse displacement due to the force
Environmental buried tube ground source heat pump air conditioning
Recently, according to an interview with the reporter interviewed by Environmental Protection Bank of Jingpu, an energy-saving, water-saving and non-polluting new technology of green refrigeration and heat supply-the environmental protection buried tube ground source heat pump air-conditioning system has been successfully developed. At present, the technology has been applied to three projects, all operating normally. The new technology, new technology is the use of more stable underground soil temperature as a source of cold and heat, to summer cooling, winter heating, energy-saving operation needs. The system abandoned the traditional mode of central air conditioning technology, the winter without the boiler room, the summer without cooling towers, no fuel, no gas, no coal, do not emit any waste, no cinder, no emissions to the air, nor Will cause thermal pollution of the air. Ground source heat pump is also different from the use of groundwater heat pump system, which does not exploit groundwater, but will not cause pollution to groundwater, but by means of underground temperature to meet people's needs of heating and cooling. It is understood that this technology not only has the advantages of environmental protection, energy conservation and economical application, but also has the energy efficiency ratio as high as 1: 4 or above, which is more than 30% higher than that of the traditional central air-conditioners through energy monitoring by the state authoritative monitoring agency. The effect is above 50%. If this one million square meters of construction technology, annual savings of 11,900 tons of standard coal, reduce flue gas emissions 130 million cubic meters, saving nearly 100 million yuan in investment, annual operating costs savings of about 10 million yuan. Zhang Qiaochang Hongqiao Environmental Protection Bureau introduced in our country's energy situation is relatively tight, this energy-saving and environmentally friendly new technologies in the future will certainly have a wide range of applications in the central air-conditioning system.