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Air compressor hybrid control system and method

A gas compressor and hybrid control technology, applied in the field of control systems, can solve problems such as unfavorable fault hidden dangers, timely resolution of unfavorable faults, failure of the main controller to reflect abnormal states in time, and failure of the main controller to reflect in time, so as to ensure stability and optimality. Efficiency, improved safety and mean time between failures, reduced operating costs

Active Publication Date: 2012-08-22
中船重工信息科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the main controller of the abnormal state of each unit cannot reflect and take action in time, which is not conducive to the timely resolution of hidden troubles
However, the main controller of the unit in the independent control mode cannot reflect the abnormal state and take action in time, which is not conducive to the timely resolution of hidden troubles

Method used

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  • Air compressor hybrid control system and method
  • Air compressor hybrid control system and method
  • Air compressor hybrid control system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, with reference to figure 1 , a hybrid control system for a gas compressor,

[0026] The system includes the main controller PLC and several local controller PLCs;

[0027] The main controller PLC is connected to the main touch screen through the MPI bus, and connected to the monitoring computer through the PROFIBUS bus; each local controller PLC is connected to the main controller PLC through the PROFIBUS bus;

[0028] Each local controller PLC is connected to a local touch screen through the MPI bus, and is connected to a regulating valve, vent valve, flow meter, temperature transmitter, pressure transmitter and servo on a gas compressor through the PROFIBUS bus. Controller connection.

Embodiment 2

[0029] Embodiment 2, with reference to figure 1 , 2, a mixing control method for a gas compressor,

[0030] The method uses the mixing control system described in Embodiment 1 to carry out mixing control;

[0031] Before the hybrid control system is started, a gas flow value is preset in the main controller PLC according to the specific working conditions. When the system is started, the main controller PLC performs cyclic scanning to detect whether there is a fault before each gas compressor starts; when the system is running According to the comparison between the measured value and the set value, it is determined whether to start the next gas compressor, and the output power of the gas compressor is adjusted by using the conventional PID control algorithm; the operation of the compressor unit is controlled by adjusting the opening of the inlet guide vane of the gas compressor Efficiency, in the remote control mode, the main controller PLC adopts intelligent constant pressu...

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Abstract

The invention discloses an air compressor hybrid control system, which comprises a main PLC (programmable logic controller) and plural local PLCs. The main PLC is connected with a main touch screen via an MPI (multi point interface) bus and with a monitoring computer via a PROFIBUS (process field bus); and each local PLC is connected with the main PLC via a PROFIBUS, with one local touch screen via an MPI bus and with a regulating valve, an emptying valve, a flow meter, a temperature transmitter, a pressure transmitter and a servo controller arranged on one air compressor via a PROFIBUS. The inventive system has characteristics of reasonable design, stable operation and long service life. The inventive method adopts integrated and independent control modes, realizes complementary advantages, improves compressor working efficiency, effectively realizes energy-saving and emission reduction, and lowers operation costs.

Description

technical field [0001] The present invention relates to a control system of a gas compressor device, specifically, a hybrid control system based on unified and independent gas compressors; the present invention also relates to a hybrid control method of the aforementioned gas compressors. Background technique [0002] Sewage treatment, shipbuilding paint spraying, chemical industry, mining and other industries in our country all use air compressors, and constant pressure and constant flow are very important in the process of use. Among them, maintaining a good dissolved oxygen environment through aeration is a very important link in the entire biological treatment process of the sewage treatment industry. As a mechanical device often used in the aeration process of sewage treatment, gas compressor plays an important role in the normal operation of the sewage treatment plant; at the same time, the gas compressor is also the link with the largest energy consumption, so the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06
Inventor 周军杨光年咸云飞王成颜耀郭荣亮张继果郑美红董奇
Owner 中船重工信息科技有限公司
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