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Energy-saving control method for compressed air industrial screw-type air compressor group control system

A compressed air, energy-saving control technology, applied in the direction of machines/engines, etc., can solve the problems of increasing system maintenance costs and high renovation costs

Active Publication Date: 2015-12-16
深圳德尔科机电环保科技有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic research on cluster control of large-scale air compressors, especially screw air compressors and large-scale air compressors mixed with screw and centrifugal air compressors, is still in the blank field; at the same time, the energy-saving control of air compressor systems The operation is limited to the use of frequency converters for facility renovation, and the cost of renovation is huge, which increases the maintenance cost of the system

Method used

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  • Energy-saving control method for compressed air industrial screw-type air compressor group control system
  • Energy-saving control method for compressed air industrial screw-type air compressor group control system
  • Energy-saving control method for compressed air industrial screw-type air compressor group control system

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Experimental program
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Effect test

Embodiment

[0056] Such as image 3 As shown, the automatic control method for the number of air compressors includes the following steps:

[0057] S1001, start;

[0058] S1002. Set the initial parameters, the parameters include: system pressure lower limit value P Ldown ; Air compressor start delay time Ts; Air compressor stop delay time Te.

[0059] S1003. Process the collected data to obtain the output pressure value P of the gas storage tank 总 The flow value Q of the compressed air main pipe after the air storage tank 需 .

[0060] S1004. Calculate the total operating flow Q that the air compressor unit can provide 供 , the formula is:

[0061]

[0062] Among them, n is the number of air compressor units, k (i) is the operating state of the i-th air compressor unit, Q (i) is the rated flow rate of the i-th air compressor unit, k (i) Satisfy:

[0063]

[0064] In S1005, take 5 continuous time flow values ​​Q 需 Generate a random sequence:

[0065] x i (0) (i=1, 2, ...,...

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Abstract

The invention discloses an energy-saving control method for a compressed air industrial screw-type air compressor group control system. The method comprises automatic control of the number of air compressors and automatic loading and uploading control of screw-type air compressors. In the system, gray scale prediction of total run traffic is conducted to control start and stop of the air compressors, so that the frequent start and stop defect of the air compressors is overcome, and the system operation stability is greatly improved; meanwhile, automatic loading and uploading control of the screw-type air compressors is carried out, so that the system operating pressure is stable, the pressure fluctuation range is reduced, and a defect that the power consumption of a frequency converter is increased caused by modification of frequency conversion control of an air compressor group. The method has the characteristics that the energy utilization efficiency is high, and the system is flexible in operation and stable in running.

Description

technical field [0001] The invention relates to the field of compressed air supply and industrial process control, and in particular to an energy-saving control method for a group control system of compressed air industrial screw air compressors. Background technique [0002] The compressed air industry includes air compressors (air compressors) for air source equipment, post-processing equipment, air storage tanks, transmission pipe networks, and pneumatic equipment at the end of pipelines. In the use of pneumatic technology, Chinese enterprises have problems such as low automation level, low efficiency of equipment use, serious waste, lack of experience in implementing energy saving, and no way to start. There is about 30% energy-saving space for the existing pneumatic systems in the factories of enterprises in our country. If reasonable and effective comprehensive transformation of the system can be implemented, 36 billion kWh of electricity for compressors can be saved e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C28/02
Inventor 张江华谭树彬杨永宽刘建昌
Owner 深圳德尔科机电环保科技有限公司
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