Air compression system and control method

A technology for compressing air and a control method, which is applied in the field of compressors, and can solve problems such as the inability to calculate the working efficiency of the air compressor or the input power ratio k in real time, increase the energy consumption of the air supply pressure of the air compressor, and the inability to calculate the start-stop operation, etc. Achieve automatic start and stop, improve operating efficiency and reduce energy consumption

Active Publication Date: 2017-09-05
深圳思步工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a high air supply pressure is set for safe air supply, the pressure loss from the air compressor air supply pipeline to the dryer outlet main pipe section will continue to increase, increasing the energy consumption of the air compressor air supply pressure
This kind of air compressor station operation management method has a large waste of energy. How to use compressed air reasonably and how to improve the working efficiency of the air compressor can not only meet the needs of process production, but also dynamically adjust various parameters. The air compressor station is always Running in the state of the highest energy efficiency has become a key tech

Method used

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Example Embodiment

[0031] Example one

[0032] The embodiment of the present invention provides a compressed air system. figure 1 , The system changes the electric drive mode of the air compressor, from the power frequency star-delta / soft starter control to the inverter control, which improves the working efficiency of the air compressor. The compressed air system specifically includes: a function switching module 100, The air compressor module 200, the detection assembly 300 and the controller 400.

[0033] The function switching module 100, connected to the air compressor module 200 and the controller 400, is used to change the starting mode of the air compressor, so that the air compressor can be switched between power frequency and variable frequency control;

[0034] The air compressor module 200 is respectively connected to the function switching module 100, the detection assembly 300 and the controller 400, and is used to provide compressed gas;

[0035] The detection component 300 is respectivel...

Example Embodiment

[0060] Example two

[0061] The embodiment of the present invention provides a compressed air control method, which is applicable to the compressed air system described in the first embodiment, and specifically includes the following methods:

[0062] Method 1: Find the most efficient pressure within the required pressure range, assign this value to PID to control the action of the air compressor, refer to Figure 4 , The specific control method is divided into the following steps:

[0063] Step S31, install equipment for each air compressor (power frequency and variable frequency)—electric energy acquisition module 80, flow meter 30, temperature and humidity sensor 35 of the suction environment, exhaust temperature sensor 10 and exhaust pressure sensor 20, The air compressor controller 400 collects the installed sensor data and calculates the real-time working efficiency of each air compressor.

[0064] Step S32, calculating the working efficiency of the air compressor

[0065] The ai...

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Abstract

The invention provides an air compression system and a control method. The air compression system comprises air compressors, a detection assembly, a valve assembly, a function switching module and a controller. At least one of the air compressors is provided with a frequency converter. The detection assembly is used for detecting the gas parameters in an outlet pipeline. The valve assembly is connected between an air suction valve and an oil-gas separator and used for forming the internal air circulation of the air compressors, lowering the pressure difference of inlets and outlets of the air compressors and reducing the start and unloading torque. The function switching module is used for changing the electric drive mode of the air compressors so that the air compressors can be switched between the power frequency and the variable frequency. The controller is used for calculating and adjusting the output frequency of the frequency converters according to the detected parameter changes for adjusting gas supply. The system solves the pressure of the maximum efficiency within the required pressure range and assigns the value to a PID so as to control the air compressors to act; when the air compressors operate, the loading and unloading pressure value is set, and the start and stop of the frequency converters are controlled; and the dew point temperature is calculated, a drying machine is started and stopped automatically, the optimum operation of energy efficiency is achieved, the work efficiency is improved, and the operation cost is lowered.

Description

technical field [0001] The invention relates to the field of compressors, in particular to a compressed air system and a control method. Background technique [0002] Compressed air is an indispensable power source in the field of industrial production. Due to different production demands, existing factories are equipped with air compressor units and supporting facilities corresponding to the gas production. Compressed air system is the main power source of energy consumption in the production field. one. Air compressors need to consume a lot of electricity when producing compressed air. Taking the common production of 100PsiG (7Kg / cm3G) compressed air system as an example, an air compressor with a suction capacity of 100ICFM needs to consume about 20HP of electricity for one hour. Air compression The energy utilization rate of the machine is very low, only about 20.8%. The working mode of most air compressor stations is: set the loading and unloading pressure (or there is...

Claims

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Application Information

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IPC IPC(8): F04B49/06
CPCF04B49/06
Inventor 刘明生李先安
Owner 深圳思步工业科技有限公司
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