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Application of air compressor in power system

time:2017-09-06 16:21:14source:Ziqi compressorauthor: 赵疆昆Clicks: 0
Electricity is one of the most important energy in a country. It is also the construction of the national economy and the use of any form of power generation.

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    Electricity is one of the most important energy in a country. It is also the construction of the national economy and the use of any form of power generation. The air compressor is inseparable from the power station. According to the different types and different places of the power generation industry. The air of different qualities should be chosen. The different types of power industry mainly refers to the hydroelectric power station and nuclear power station is a coal-fired power station, (this does not include other energy sources such as wind power stations, solar power stations and so on) the different place is in the same station as instrument gas, ash, gas service compressed using different compression the air of the place. Air compressor under the classification of the air and so on. Since there is so much stress on the use of compressed air.
The following is the introduction of the application and configuration of the screw air compressor system in the electric power industry.
1. Thermal power station
A thermal power station in the compressed air main instrument with compressed air system, the factory use compressed air system, water treatment system and compressed air compressed air system in the following were introduced by grey: four different places.
1. compressed air system for control instruments:
The operation of a thermal power generating unit requires a large number of control instruments to support operation. The movements of these control instruments are controlled by compressed air. For the control instruments, the air pressure is usually used for 0.650.70Mpa, and the air volume is the size of the air system. Generally, the 2300MW thermal power can be determined according to the capacity of the thermal power unit.
The amount of compressed air used for the instrument is 40 unit. Considering that the demand for compressed air in the operation of two units is usually large and sometimes small. When the gas is less than 20m3/min. One of the 20m3/min screw air compressors will automatically stop. That is, the compressed air at any time can not stop the special requirements of the compressed air. Therefore, the configuration of the air compressor is required by the instrument, and two is required to be overhauled. Of course, the configuration of many thermal power stations is not exactly the same. After the air compressor is selected. Because air compressors have to consider the quality of compressed air. According to the air is the quality of compressed air provided to the instrument, the quality of the air has a high requirement. The quality grade ISO/DP8573/188 of the compressed air for the instrument is generally defined as the 2 grade of 2-3-2, the solid particle, the water content of 3, and the oil content of 2. Past times。 The development of the compressed air injection screw compressor for the instrument is slow. Oil free reciprocating air compressor is usually used to produce 2Z3/82Z3/ in common use in China. Now the outstanding advantages of the screw air compressor decide that the reciprocating air compressor is phased out. In addition, the technical level of air purification equipment has been improved. The air purifier can be combined with the compressed air oil screw air compressor with the injection completely. Quality requirements. Of course, the oil free screw air compressor is also possible, but from the economic point of view. It's easier to run and maintain. The use of the fuel injection screw type air compressor is less expensive.
2. Factory Service compressed air system:
Like a purge pipe, etc. The size of the gas is generally determined by the size of the power plant and its use, such as a 2300MW thermal power unit. The factory use compressed air consumption generally for a maximum of two 20m3/min screw as the compressed air is used to purge gas supply pipeline or in the maintenance of machine compressor. Used as a pneumatic tool, etc. The quality requirements and therefore service compressed air is not high. So the General Factory Service compressed air system like instrument with compressed air can not stop gas supply. The compressed air is not used to prepare the machine. According to the requirements of the ISO/DP8573/183 specification. Quality requirements 4-6-5 is 4 solid particles, water content of 6 oil content 5.
3. water treatment compressed air system:
Water treatment system of hydropower station is generally divided into boiler supply water treatment system and industrial wastewater disposal system.
3.1 boiler supply water treatment system
The boiler supply water treatment system can be roughly due to the difference in water quality of each power plant. It is divided into three types. The better the water treatment system is, the easier the water treatment system is. There are some pneumatic diaphragm valves and pneumatic instruments between the valves and the instrument system equipment. The movement is by compressed air to achieve the general situation under the general situation of compressed air gas is not very large. But the quality of air compressor is higher. For example, the boiler supply water treatment system for a power plant needs only one m33/min air compressor. Two sets of m33/min were arranged to consider the spare machine and other factors. Air compressor。 The requirement for the quality of compressed air in the water disposal system of the power plant is the use of two stage oil filtration and adsorption dryer. According to the recommendation of the ISO/DP8573/188 specification. The quality requirements of the compressed air in the system are generally as follows: 233, 2 grade of solid particles, 3 level of water content, 3 grade of oil content
3.2 waste water disposal system
In the wastewater treatment system. A part of the compressed air is used in pneumatic equipment. For some equipment movement is another part by compressed air to control the compressed air to the mixing wastewater (with some plant roots blower mixing machine) for wastewater disposal of different equipment of this system of compressed air consumption is also different.
4. air compressor system for ash removal:
The ash removal system can be divided into negative pressure removal system, positive pressure removal system, low positive pressure removal system and hydraulic ash removal system according to the pressure. These four kinds of ash removal systems. The so-called positive pressure deash system needs to use compressed air to remove ash from the positive pressure deash system. An air compressor and a bin pump are used to make the positive pressure in the pipeline. The storage pump is divided into single storehouse pump and multi storehouse pump. The power of the system is within the range of 10~60t/h. Distance in 1000M

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