PLC Controlled Boiler
The motivation behind this undertaking is to introduce a programmable Logic controller (PLC) control framework that is applied to the fire tube boiler which will increment superior grade and more prominent effectiveness. Boiler is one of the main hardware in any power plants which require persistent
2025-06-28 16:28:48 - Adil Khan
PLC Controlled Boiler
Project Area of Specialization Electrical/Electronic EngineeringProject SummaryThe motivation behind this undertaking is to introduce a programmable Logic controller (PLC) control framework that is applied to the fire tube boiler which will increment superior grade and more prominent effectiveness. Boiler is one of the main hardware in any power plants which require persistent checking and investigation at regular bases. There are potential outcomes of mistakes at estimating parameters and different stages can cause malfunctioning with human specialists. So a solid checking framework is important to stay away from disastrous accidents, with the use of Programmable Logic Controller. This whole project provides the execution process and control features of a gas burner system for boiler, moreover it discusses about the systems structure, methodology and implementation for reliable automation execution by using programmable logic controller (PLC). All the necessary measures for safe starting, protection and executional operation of the burner, FD Fan, Fire tube are taken into consideration by the use PLC program. The initial phase of this project focuses on delivering the parameters to the boiler by using different sensors at a required dynamic constraint, so as to constantly maintain a desired parameter in the boiler. The Air preheater and Economizer are used to achieve desired steam pressure at desired temperature, the attributes of Steam Table analysis are performed. This Design system will monitor the boiler temperature, pressure and water level using various sensors and scanners, and corresponding results are given to the PLC which controls the boiler temperature, pressure and water level. If any of the parameters inside or from outside the boiler exceeds or degrades from the desired values, then the complete system is shut down. In case of uncertainty many automated safety valves are installed to release pressure of steam and inform the instantly to concerned authority by the help of alarms. Automation is performed using ladder logic which is designed using MELSOFT GX Developer soft..
Project ObjectivesThe goal of this project is to create a fully controlled fire tube boiler with a number of flexible responses using a PLC.
- To gain a basic grasp of the many types of boilers and how they work.
- Recognize the most important boiler operational and safety requirements.
- To understand the fundamental control algorithms and be able to express them in a block diagram form to aid in the design, installation, calibration, and maintenance of equipment.
- To be aware of the main boiler threats and to understand how trips and interlocks prevents against dangerous events.
- A PLC-based control system may be a useful alternative for automating the operation and control of the boiler burner management system while reducing human participation.
The control goal is usually to regulate the boiler’s operating parameters so that the steam or hot water supply is delivered as specified, in the appropriate volumes, at a fair speed, and with minimal energy waste. This goal necessitates a huge spectrum of supporting tasks, many of which fall under the control and instrumentation engineers and technicians responsibilities.
Project Implementation MethodThe design of fire-tube boilers consists of a bundle of fire tubes contained in a shell and the evaporating process takes place outside the fire tubes generating steam. Fire-tube boilers are often characterized by their number of passes, referring to the number of times that the flue gas flows along the length of the pressure vessel transferring heat to the water. Each pass sends the flue gas through the tubes in the opposite direction. To make another pass, the gas turns 180 degrees and passes back through the shell. The turnaround zones can be either dryback or water-back. In dry-back designs, the turnaround area is refractory lined. In water-back designs, this turnaround zone is water-cooled, eliminating the need for the refractory lining. Their characteristically large water capacity makes them somewhat slow in coming up to operating pressure and temperature but, on the other hand, the large amount of heat stored in the water provides some accumulator action that makes it possible to meet load changes quickly. There are several fire-tube boiler designs such as the horizontal return tubular boiler (HRT), which is encased in a brickwork setting to contain the flame, so it was an externally fired boiler and also two-pass boiler. By enlarging the diameter of the return flue and putting the firing grating inside this enlarged flue the HRT boiler becomes internally-fired and the furnace is placed inside the shell and completely surrounded by water.
Benefits of the ProjectTo cope the technological advancement, to make sure better performance and effectiveness and reliability in a greater comparatively cheap way this proposed machine might be a superb scope. It's going to also provide higher flexibility in customization of operation and control with minimum attempt. The project work has supplied itself to examine the vital parts of the complete procedure worried, their implementation and the troubles that could display up have also been given their due significance.
•Reducing the percentage of boiler failure
•Achieving desired control and automation through programs.
•Reduced Space, Energy saving
•Modular Replacement
•Easy trouble shooting and Error diagnostics.
Technical Details of Final Deliverable•The main contributions strategies boiler management system is: primary management and combustion control.
•In the primary control permits fuel to flow only if all of the safe conditions for fuel ignition square measure met.
•The combustion control regulates chamber fuel and air magnitude relation among limits for continuous combustion
•The major steps in boiler automation system are: checking boiler self-protection for stat up, pre-purging, pilot trial and ignite main burner trial and ignite, maintaining air/fuel ratio according to the load demand and post-purging when burner stop.
•Defining and implementing the activates extra low (lowest) water level alarm.
•Defining supporting classes for Shuts burner down on first low water.
•Defining the Self Protection System which include the FD Fan, Ignition, Pilot/Main Valve, Water Level, Pressure Level and flame detector,
•Boiler Turn OFF when Pressure reaches to the desired level.
•Boiler Shuts down and provide protection against hazardous event.
Final Deliverable of the Project Hardware SystemCore Industry ManufacturingOther Industries Energy Core Technology OthersOther Technologies RoboticsSustainable Development Goals Industry, Innovation and InfrastructureRequired Resources| Item Name | Type | No. of Units | Per Unit Cost (in Rs) | Total (in Rs) |
|---|---|---|---|---|
| Total in (Rs) | 70000 | |||
| Boiler Body | Equipment | 1 | 15000 | 15000 |
| FD Fan | Equipment | 1 | 2000 | 2000 |
| Water pump | Equipment | 1 | 6000 | 6000 |
| Flame Scanner | Equipment | 1 | 4000 | 4000 |
| Burner | Equipment | 1 | 1500 | 1500 |
| pressure Sensor | Equipment | 2 | 2500 | 5000 |
| Solenoids Valve | Equipment | 3 | 1000 | 3000 |
| pressure switch | Equipment | 1 | 3500 | 3500 |
| Mitsubishi PLC | Equipment | 1 | 22000 | 22000 |
| Relay | Equipment | 10 | 400 | 4000 |
| Float less level switch | Equipment | 1 | 2000 | 2000 |
| power supply | Equipment | 1 | 2000 | 2000 |