Insight into the basic techniques and special challenges associated with the application of automatic diagnosis to reciprocating compressors
Maintenance stop scheduled after indication of early failure The PROGNOST®-Predictor system showed increasing Confidence Factor values on the HFE spectrum for the Bearing Bottom Torsion Shaft on August 07th in 2016 first. Within the following months the confidence still kept on a high level till the beginning of November, when the amplitude showed the first higher peaks. On November 05th, the amplitudes violated all thresholds and the acceleration grew from 0.1 m/sec² to 2 m/sec². After the final maintenance work at the end of November the amplitude and Confidence Factor values returned to good condtion. Finally, you see on the last analysis picture the early recognition of HFE 10-20 kHz in relation to the HFE 5-10 kHz and the acceleration [...]
Reciprocating compressors are often used to handle very dirty and corrosive gases that have a negative impact on component lifetime and affect on the plant productivity. Due to this fact there are several ways to handle this problem, a few plants are using a identic machine as backup and in case of failure they are using the twin machine to keep the process running. But maybe this is not the best way. Efficient plants are asking for a condition monitoring system, this is where PROGNOST Systems comes to the play. A installation of a condition monitoring system like PROGNOST®-NT brings several benefits to the operator. Starting at the maintenance planning because he sees the development of his wearing parts and [...]
- Company (LDPE industry) avoided costs, by trusting Machine Monitoring System GalleryNews, Cases with PROGNOST®-NT, Customer Case Studies, Featured, Hyper Compressor, Knowledge Hub, Online Condition Monitoring, Reciprocating Machinery, Vibration Monitoring
Detection of various valve failures on LDPE hyper compressor within the six weeks of operation saved 250 million USD in production loss
Companies around the world are currently facing great challenges in organizing themselves in such a way that the health of all employees and at the same time business operations are guaranteed. As a technology leader in the field of Remote Machinery Diagnostics, we are in the fortunate position of being able to continue to provide comprehensive support to the majority of our customers without personal contact on site. The majority of PROGNOST Systems employees have been working from their home offices since March 17. This enables us to provide our contractual services largely without restrictions. We can also continue to provide you with competent advice on all questions of machine monitoring based on the existing secure remote accesses. After [...]
Monitoring the displacement of shafts in rotating machinery is mandatory to detect impending failures at an early stage. This tutorial describes how to generate Orbit plots and how to read them. This introduction of the orbit analysis will answer the following questions: How to read an Orbit plot?For what reason a Orbit plot can be used?How the Orbit plot is generated?What problems can be detected by using the Orbit plot? https://youtu.be/u3htuQEMjrc
Monitored Machine The monitored machine is a secondary LDPE Hyper Compressor (high pressure compressor) in Ethylene service of LDPE production line. What happened? Sequence of events On March 29, the PROGNOST System tripped the Hyper compressor in consequence of high plunger vibration on cylinder 2AVertical position lead LDPE unit for total shut downThe Maintenance group of the customer, started the root cause analysis with assistance of the PROGNOST Systems Customer Support team, they analyzed the data and finally recommended to open the cylinder for inspection Trend over 60 minutes of plunger position Peak-to-Peak values Findings As a result of the cylinder opening the following findings where detected. In the plunger path way they found Chips of packing ring material.The packing [...]
Learn how automated pV diagram is used for efficiency optimization on reciprocating compressors.
During the video we will talk about the discharge and the suction phase of the pV diagram. What are the most typical differences to see in the signalDelay of the valve opening How to influence and how to react We will learn much about the compression cycle, different typical pV diagram characteristics, and common shapes. https://www.youtube.com/watch?v=ST-6-iYiUoM
The annual Software Upgrade for your PROGNOST®‑Predictor installation comprises of all new features resulting from our continuous product improvement process.
How to monitor different types of vibration on Rotating Equipment