1、附录 C 英文资料 Design and application of energy-saving pneumatic system Pneumatic drive and control the production process automation and mechanization of the most effective means, but its working medium (air) and high manufacturing costs, energy efficiency, extremely low. Pneumatic system used to improv
2、e the economy, has become the must attention.On the pneumatic system, reducing gas consumption is the energy.Energy-saving pneumatic system from several aspects: (1) improve the gas supply system, pneumatic system to solve the energy problem, should improve the gas supply system, starting from the c
3、ompressed air production, processing, transmission, distribution of the gas supply systemthorough consideration, taking comprehensive measures.Structure of different types of air compressors produce the same amount of compressed air, because of its efficiency vary, there are differences in energy co
4、nsumption.Speed type of turbine air compressors efficiency is low, such as the free air compressed into 0.6MPa 10m3 of compressed air, by the displacement to 1000 m3 / h of the turbine air compressor production, energy consumption 1.77kW h.Produced the same amount and pressure of compressed air, suc
5、h as the use of the same displacement piston compressor production, only the energy consumption 0.83kW h.Therefore, from the energy point of view of energy saving and air compressor air compressor type of the structure.In the choice of air compressor, the use of a perfect between-class multi-polar c
6、ompressor cooling can save energy and improve efficiency.For example, two single stage compression ratio more than 15% energy saving, 3 second compression and energy-efficient compression ratio of 5% 10%.Change the traditional design concepts, will focus on the whole plant by the large supply of com
7、pressed air compressor station, transforming the distribution of the pneumatic system in the plant near the area of multiple smaller air compressor gas more economical.For example, gas station by an air compressor, compressed air pipeline length, pressure loss along the large, gas equipment in order
8、 to ensure sufficient working pressure, compressor outlet pressure higher.The use of multiple air compressor supply system, air compressor gas consumption workshop in the vicinity of the installation, along the small loss, can reduce the outlet pressure.Test alone to prove efficiency of 20%.The temp
9、erature of inhaled air compressor for each additional 3 , would increase the compression power of about 1%.Due to indoor air compressor room temperature were higher than outdoor temperature, therefore, air compressor intake pipe should be receiving the outdoor temperature is low, the environment cle
10、an, dry place.Outdoors than indoors during the winter low temperature 15 , can be about 5.1% energy saving.So that when the air compressor in the production of compressed air and gas flows through the filtration equipment, pressure loss is the loss of gas supply system, a further reduction of energy
11、-saving factor.So filtering equipment must be maintained in good working order.Elimination of pneumatic systems for leaks, is another important energy-saving pneumatic system of measures.Compressed air leak so that the energy consumed in vain, Ershi production costs. (2) using gas - electric or gas
12、- liquid composite transmission control systems for energy-saving technology since the rapid development of microelectronics, computer applications have entered the field of pneumatic control technology.Used to control the pneumatic actuator, pneumatic components by the general composition of comple
13、x pneumatic logic control circuit, now may be a computer or programmable logic controller to replace.As long as the procedures for the preparation of various pneumatic devices can realize automation of different processes.Currently, pneumatic solenoid valve power consumption at 1.8W most of the foll
14、owing, small valve has only 0.45W of power, the power of direct action type valve generally are less than 4W.The significance of low-power solenoid is not merely to save energy and improve the reliability of the electromagnet, on the other hand also for pneumatic technology and microelectronics tech
15、nologies, creating the necessary conditions.Pneumatic devices with low power consumption, programmable logic controller as a direct-drive components, complex large-scale process control, to give a good energy saving effect. (3) development of energy-saving pneumatic components pneumatic energy devel
16、opment component, available from the following aspects: to reduce leakage, reduce energy consumption.Development of anti-leakage, good wear resistance, no to oil seals soft material.Development of low-power pneumatic components, reduce energy consumption.Adopts the oil lubrication, oil consumption t
17、o reduce environmental pollution.No to oil lubrication system is a pneumatic filter, regulator why not lubricating the valves, cylinder component system.Lubrication-free pneumatic system to the oil used in the work of the medium - the air does not contain oil mist, emissions are also non-oil mist.Pn
18、eumatic components to the oil-free lubrication is a pre-injection of grease in the device can work long hours without added grease in the pneumatic components.Lubrication-free pneumatic system to the oil mist from time to set up devices.Pneumatic system to the oil-free lubrication is simple, low cos
19、t, easy maintenance, foreign equipment commonly used by this system.In the course of such a system is essentially the same lubrication conditions, changes in external conditions are not subject to interference, and thus stable performance, long life.No lubrication lubrication-free pneumatic cylinder
20、 system is a special structure, and use a self-lubricating material components, materials and manufacturing difficulties due, it is now also applied. (4) rational design of pneumatic systems, merit selection and rational use of pneumatic components, pneumatic fluid to reduce gas consumption, pneumat
21、ic system dynamics theory and experimentation, the use of computer simulation technology to optimize the design of the pneumatic system, merit selectionbest parameters.For example, the nominal diameter of the cylinder is based on common ratio of geometric progression of 1.25 points files, such as th
22、e expansion of the cylinder diameter of a random grade, then the gas consumption to increase 56%.If additional trips, gas consumption will increase.Therefore, selecting the best parameter selection for energy conservation is very important.Rational use of energy-saving measures are also components,
23、such as short stroke cylinder, single acting spring return using the cylinder, double acting cylinder is clearly more to save compressed air, reducing gas consumption. (5) in the pneumatic system with different working pressure pneumatic system is one of the important energy-saving way to different
24、parts of the system under different circumstances with different working pressure.For example, the supply of high pressure gas source pressure transmission system, pneumatic control systems on the supply of low-pressure gas source； in the cylinder to overcome the external load of the working stroke
25、high-pressure gas supply source, no external load supply of low pressure gas source itinerary, obtain considerable energy savings.So is travel related information on high pressure gas source, return with a low pressure gas source (0.1 0.2MPa gauge), can be saving 25% to 35%.(6) Rod recycling cavity
26、are the air pressure to the piston to return, change the gas consumption for the one-way two-way gas consumption.Production cylinder widely used in practice, many trips are being applied load, the return just to overcome their own friction.This system to extend the piston rod Rodless cavity after a pressure gas is used to return the piston to the original two-way gas consumption of one-way consumption of gas, up to 50% energy saving effect.
