REVERSE ENGINEERING SUDU FORCE DRAFT FAN STEAM POWER PLANT 315 MW OF CAPACITY

• Main Author: Abdurrohim, Arif
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/44168
• Institution: Institut Teknologi Bandung

Electricity supply companies in Indonesia have a workshop unit that supports the making of spare parts for generator components, which in the business process of the workshop performs reverse engineering methods. One component of the plant that is currently being carried out in the process of impersonation is the force draft fan (FD Fan) belonging to one of the power plant units in Indonesia. The efficiency analysis phase that is skipped in the force draft impersonation engineering process can produce a product that is not following the geometry model and the operating performance of the product being emulated. Analysis of the settlement can be done using software through numerical methods based on computational dynamics Geometry data collection in the form of point clouds are used as a basis for making 3D models of force draft fan blades. Then a model of the force draft fan system is made in a system unit consisting of the inlet, stator 1, rotor, stator 2 and outlet extension. The next step is to divide the volume of the model into small parts or meshing using the Mesh tools in Workbench 18.1 with fine mesh quality. The mesh size in a model will affect the accuracy of the computational fluid dynamic analysis that will be carried out. The simulation stage begins by determining the conditions and parameters of the simulation following the specification data and fan operating data, ie the variables that become the main input are the mass flow rate inlet = 121.93 kg / s, static pressure outlet = 3184 Pa, and angular velocity fan = 1490 rpm. The simulation stage is also used to find the profile tolerance values on the blade side and blade shape tolerance on the bottom surface of the blade holder with variations of data using a model with the addition of thickness to the blade and the variation of the blade position's tilt to the rotor axis. Simulation results show that forced draft fan blades from reverse engineering have torque on blade value = 2278.15 Nm, and fan shaft power = 355.5 kW or below the values stated in the data operating and maintenance manual which is 376.2 kW and profile tolerance of 0.5 mm and flatness tolerance of 0.4 mm.