CN101158466A - Industry boiler control system - Google Patents

Abstract

The invention relates to the cooling device field of the heat treatment industry. A boiler device is a complex controlling object. The main input variable comprises load, boiler water supply, fuel quantity, desuperheating water, air supply and air draught, etc. The main output variable comprises drum water level, steam pressure, furnace negative pressure and excess air, etc. Currently, an industrial boiler is an important power plant in manufacturing process. In the petrochemical industry field, the industrial boiler has the main effect of providing needed qualified steam for each manufacture device. The quality controlled by the industrial boiler not only concerns the self operation effect of the boiler, but also directly influences on the stabilities of the manufacture process of relevant devices. The system has higher degree of automation, greatly reduces the working intensity of operator and reduces the cost. The supervisory computer monitoring process developed by making use of force control has the advantages of perfect functions, high synthesis, friendly human-computer interface and good practicality.

Description

Industry boiler control system

Technical field:

The present invention carries out the cooling device field for heat treatment industry.

Background technology:

Industrial Boiler is the important motivity equipment in the production process at present.At petrochemical industry, its main effect is to provide needed qualified steam to each process units, and the quality of its control quality not only is related to the effect of boiler self-operating, but also will directly have influence on the stability of relevant apparatus production process.

Technology contents:

This system automation degree is higher, greatly reduces operator's labour intensity, has reduced cost, utilizes the ipc monitor program function of power control  exploitation perfect, and is comprehensive strong, man-machine interface close friend, and practicality is good.

Specific implementation method:

Boiler plant is the control object of a complexity, and main input variable is load, boiler feedwater, fuel quantity, desuperheating water, air-supply and air inducing etc.; Main output variable is steam water-level, steam pressure, combustion chamber draft, excess air etc.

In two active stations, one as main frame, and another makes slave.When system starts first, have only main frame and PLC to set up communication, slave have only and PLC between the physical communication link, but not with the PLC communication, slave reads the data of PLC by main frame, the control command that operating personnel send on slave is also assigned to PLC through main frame.Under the normal condition, operating personnel no matter can both normal running on which active station, when slave finds that main frame breaks down, just start program with the PLC communication, become main frame by slave, send system alarm simultaneously, thereby realize the redundant stand-by heat of two-shipper real-time data base.

Claims (1)

1. under the normal condition, operating personnel no matter can both normal running on which active station, when slave finds that main frame breaks down, just start program with the PLC communication, become main frame by slave, send system alarm simultaneously, thereby realize the redundant stand-by heat of two-shipper real-time data base.