Tezislər / Theses



Yüklə 17,55 Mb.
Pdf görüntüsü
səhifə261/493
tarix02.10.2023
ölçüsü17,55 Mb.
#151572
1   ...   257   258   259   260   261   262   263   264   ...   493
BHOS Tezisler 2022 17x24sm

BHOS EMERSON TEST RİG 
Muzhgan Huseynli 
Baku Higher Oil School
Baku, Azerbaijan 
mujgan.huseynli.std@bhos.edu.az 
Supervisor: Ph.D, Associate Professor Erkin Ibragimov 
Keywords:
level measurement, control loop, control valve, PID controller
Level control loops are very common in industry as it is essential to 
assure the safety and profitability of the processes in the plant. Principally, 
level measurement is the determination of the position of a surface of a liquid, 
a solid, slurries or the interface of two liquids in tanks, silos, or reactors. 
Furthermore, level control is essential for safety reasons, leak detection and 


THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
270
preventing an overfill.
If the level of a liquid, a solid or a liquefied gas is not 
monitored and controlled properly, it can severely damage equipment and 
result in undesirable change in the product quality or loss of production. 
In various industrial applications, control loops are the systems to maintain 
a process variable at a desired value - set point. They are important to maintain 
stability in the system and to consistently produce the desired outcome of the 
process.
This system consists of the sensing device, the controller, and the 
final control element (FCE), which are all required for automatic control. The 
purpose of the project is to set up and configure a level control loop at the 
BHOS Emerson test rig. The loop devices used are “Radar Level Transmitter 
5300” as a measurement device, “EZ control valve - 667 actuator- DVC6000” 
as a final control element, “DeltaV Hardware & Software” as a controller and 
“Variable Frequency Drive” as a disturbance source. 
In order to have a proper, safe and accurate level measurement
measurement devices must be selected for the paramaters of the given 
system based on analysis of the technologies and vendors. Level sensors 
can use a contact or non-contact measurement principles.
The temperature 
or pressure of the process material could affect the reading of the contact 
sensor, damage it or cause any other troublesome problems. As a non-
contact type of level sensors is more adaptable to the system, radar level 
transmitter is chosen for the loop. 
The controller is the component of the control loop that interprets the 
sensor readings and decides on the control action based on a comparison of 
that value to the set point. The PID Algorithm is a common form of the 
feedback control at which the combination of integral and derivative controls 
provides the decreased or zero offset and the addition of proportianal control 
provides a quicker response time. Most feedback control loops are controlled 
by this algorithm or its minor variations of it. As a derivative mode is complex 
for this basic loop, the PI control technique is selected as the controller 
algorithm for the given system. 
Lastly, proper final control element must be selected for the system. The 
final control elements are the devices, which get the control action signals 
from the controller and adjust the process variable to the desired value. 
There are several common types of FCEs of the control loop, such as a 
control valve, Variable Frequency Driver, or a solenoid valve. Although VFDs 
has the economic benefits, they will not operate properly at very low speeds. 
Therefore, a control valve is chosen for the given loop to achieve a wide 
range of speeds in the system. The selected control valve will adjust a flow 
of fluid to compensate for the load disturbance and maintain the process 
variable near to the desired set point. 
In the implementation stage, the program has been developed in DeltaV 
software provided by Emerson with the required logic and communication has 



Yüklə 17,55 Mb.

Dostları ilə paylaş:
1   ...   257   258   259   260   261   262   263   264   ...   493




Verilənlər bazası müəlliflik hüququ ilə müdafiə olunur ©azkurs.org 2024
rəhbərliyinə müraciət

gir | qeydiyyatdan keç
    Ana səhifə


yükləyin