0刖 This system is an example of using several air compressors to rotate work to realize the large flow function of the air compressor without long-term operation of a single air compressor.
More than one air compressor parallel operation air compressor is a common power device, mainly used as a small power source for enterprises, but the air supply of a single air compressor is not large, for places or enterprises that need a large amount of gas supply. Will cause insufficient gas supply and affect normal production. If a large air compressor is selected, the purchase and maintenance operation costs will be greatly increased.
If the required air supply is not large, when several air compressors can be used, we can use multiple air compressors to run the same method to solve the operation of the motor to keep the control pressure constant within a certain range. When running at the same time, it will be found that in most cases, no matter how to adjust the upper and lower limits of the air pressure relay of each device, there are always one or two devices running for a long time, and other devices can not be operated unless the power is cut off artificially. open. To this end, it is necessary to realize automatic control of each air compressor. Below we take the example of controlling the rotation of four air compressors as an example.
2 rotation working principle and realization of the device to Delta, 10 14302, as the control core, and with a touch screen. The entire device is highly reliable and easy to operate. The principle box 1.
External signal pressure start-stop state operation monitoring touch Kenting output signal put people Ding air compressor, air compressor 2 air compressor 3 air compressor 4, control multiple air compressor principle box pressure low point pressure high point power incoming line Kl1 limit K44 limit is 2 people 22, the rotation control part to ensure the safe operation of the equipment, retain the pneumatic relay used by the original equipment, using only 1.6; 1 electrolysis point pressure to control the start and stop of each air compressor pressure.
2.2 Control Program 2.1 Hardware Selection 2 The programmable controller input requires 2 points of high and low pressure points, and the output requires 4 points. Consider leaving room for future expansion, choose Delta 80.2 with 8 input and 5 output.
The touch screen is selected from the 506; the intermediate relay uses the air compressor to rotate the operation control including control and monitoring settings.
The monitoring settings are implemented by a touch screen. It mainly includes the interface of the current interface of the following interfaces, the setting interface of a certain air compressor damage, the query interface of each air compressor running time, etc.
The control software is the core of the rotation operation. It is realized by the running program. 10 After receiving the input signal, the current electrical contact pressure is set according to the preset rotation time on the touch screen to control the current air compressor. Operation, one is for auxiliary operation and by whom to rotate. In this program, if there is a power outage and power is restored, the rotation will still be performed in the original order. Program running process 4.
The artificial rotation control air compressor operation belongs to the forced disconnection motor operation. At this time, the pneumatic relay contact is not disconnected, and the pipeline pressure between the piston and the check valve is not eliminated, so that the air compressor is started with pressure when restarting. The motor is difficult to start and the motor is not safe to operate. In order to solve this problem, an electromagnetic reversing valve was installed to make it parallel with the air pressure relay. When the motor starts, the solenoid valve energizes to close the valve; when the motor stops, the solenoid valve loses power to open the valve, and vents the pipe between the check valve and the piston.
3 Conclusion Application, control air compressor rotation operation, not only solves the defect that a single air compressor can not provide large-flow compressed air, but also avoids the single top electric innovation enterprise won by the single-state electric group on August 22, 2010, AIA Zhang Guoming, Vice President of Electric Group, was invited to participate in the 1st China Electrical Equipment Innovation and Development Forum and the Top Ten Electrical Innovation Launching Events held by the China Electrotechnical Society Electrical Technology Magazine in Beijing, and received the honorary trophy and certificate of the first ten electrical innovation companies. . The list of the first ten major electrical innovation companies is Changshu Switch Manufacturing Co., Ltd. Daquan Group Co., Ltd. Jiangsu Huapeng Transformer Co., Ltd. Nantong Shenma Power Technology Co., Ltd. Shanghai Electric Co., Ltd. People's Electric Appliance Factory Shanghai Youbang Electric Group Co., Ltd. Shenzhen Kelu Electronic Technology Co., Ltd. TBEA Co., Ltd. Xinjiang Transformer Factory Xi'an Qiyuan Electromechanical Equipment Co., Ltd. Zhejiang Zhengtai Electric Co., Ltd. A long-term operation of the air compressor often causes the motor to burn out. The cylinder is damaged by long-term high temperature. The failure reduces maintenance costs and ensures safe production.
Zhongda Dentsu. , application technical manual procedures article 0.
Deep training man-machine electronics. 3 calls 6, 5, manual 0.
Chang Dou Nan. Programmable Controller Principle Application Experiment 2nd Editionæ™·. Beijing Mechanical Industry Press, 1998.
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