Measuring the speed of a car is done via the speedometer, measuring the flight altitude of an aircraft is done via the altimeter, but how can we monitor the convey performance of a pneumatic convey system? There is a limited amount of possibilities for such, one of which is measuring the “heartbeat” and provides the operator with all information on the vital condition of the operation.
Operation of Pneumatic Conveying
Basically, the process is divided into steps of the interaction between the key components and separated into:
- Suction cycle (collecting the cargo)
- Pressurization cycle (building pressure into the storage tank)
- Discharge cycle (convey the cargo to shore)
- Venting cycle (prepare the system to for suction cycle)
Monitoring via the “Heartbeat”
As each step has its own start and end phase based on a specific pressure, which is monitored by the PLC via pressure transmitters. Let’s assume that the PLC will collect a pressure sample each second, we can visualize this into the following illustration per Tank within a timeframe:
Based on this trending we can now add each step:
By visualizing the pressures over time, the operator can now live observe the condition of each step and where needed alter some parameters gaining better performance.
The above illustration currently shows that the Suction step is shorter in time compared to the Discharge step for conveying the same amount of cargo to shore. Meaning in case tuning & tweaking will be executed, the first attention/focus should be on the Discharge step of the system.
The needed type of constructive attention will vary by different influences, factors and skills.
An article about a case study can be found here: http://www.lionbulkhandling.com/2017/05/16/tuning-and-tweaking-boosting-earnings-efficiency-ratio-as-high-as-45/
Much attention is given to maintenance only, while a higher efficiency ratio can be achieved via tuning and tweaking, via digital technology like this heartbeat by a correct expert party.
Based on more than 50 years of experience in this industry, Lion Bulk Handling is able to perform this acquisition for you. Book your visit here: http://www.lionbulkhandling.com/services/