The automation of the boiler (pilot project)

ABSTRACT

on bulletstcontrol PUTT-0.5 for solid fuel boiler

Remote upravlinnia PUTT - 0,5(hereinafter the panel) is designed to control the solid fuel boiler with a capacity of 0.5 MW.* Fuel type: wood, wood chips, peat briquettes, straw briquettes wood briquettes, biomass briquettes(sunflower husk, waste clearing, cake, etc), fuel loading and unloading of ash-manual.**

 The remote is designed to the basis of programmable logic the controller (next PLC) ALFA XL MITSUBISHI Japan.

PLC XL ALFA developed company MITSUBISHI specially to solve problems of this kind. PLC ALFA XL provides technical and functional characteristics the possibility of a high level for the console, and in connection with solid fuel boiler forms modern high-performance heat generating installation.

 In addition to control standard parameters: temperature of water at inlet and outlet of the boiler, razresheniya in the boiler, the pressure of water in the system selection heat capacity and signal when the output parameters within certain limits, remote performs :

a) smooth the regulation capacity of the boiler on the task that is set manually by a knob that allows you to manage the process of formation of heat in according to the weather conditions , time of day , etc., and thus, save fuel;

        b) PID control with given the signal from the lambda probethat optimizes the combustion process fuel provides the minimum emissions of harmful substances in the atmosphere, increases the coefficient of efficiency of the boiler ;

        C)the issuance of a light signal to load fuel; in the case of automatic loading of fuel can to serve as the starting signal for the equipment ;

        g) calculating the current thermal power boiler in kilowat and the amount of heat produced by the boiler , Gcal

        d) handling emergency situations with the issue of light and sound signals . Informing staff about the failures in elektrosnabzhenie.

Data technical characteristics give grounds to assert that the panel meets high technical level and their performance is at the level of foreign production samples Western European firms.

On the panel developed a set of design documentation , which includes :

1. The schematic electrical diagram E3 effects. 4.Assembly drawing SB

2. List elements PE3 5.Specification.

3.Scheme electrical connections E 6. The user guide.

The structure of the design documentation of remote POIX 0,5 provides for its entry into the boiler as Assembly units.

Developed a program for the PLC XL ALFA, which is stored on the CD

An integral part of the console:

1. The microcontroller ( PLC ) ALFA XL .

2.Blocks conversion of signals. 7. Heat the relay.

3. Power supply units. 8.Contactors.

4. The fuse box 9. Circuit breakers

5. Elements the control unit 10. Terminal pads for connection of the input 6. The frequency Converter. signals from sensors and output signals

                                                                                                    management

placed in elektrotekhnicheskoi Cabinet Randsmarami: height 600 X Sirina X CHatBina.

The console provides these modes of operation of the boiler:

1. READY FOR LAUNCH.

2.The STARTING or IGNITION of the boiler

3.WORK. In this mode, depending on the composition of the exhaust gases, controlled lambda probe, set the sub-view FULL COMBUSTION

Remote control options process heat energy and, in case of their release for the limits, produces a light and the audio signal from the translation of the boiler mode

The PROBLEM with issuance of governors impacts to the actuators.

  *Remote can control the solid fuel boiler power from 0.125 MW to 1 mW