More and more is expected of our compressor packages. Wide speed ranges, large variations in pressures and flow, varying gas compositions and multiple unloading schemes all present challenges to a proper torsional design of a system where the operating envelope is stretched to encompass numerous operating scenarios.
This paper presents methods to meet some of these challenges and reasons to establish boundaries for the design of reciprocating gas packages.
Using the “GMRC Recommended Practice for Control of Torsional Vibrations in Direct-Driven Separable Reciprocating Compressors,” the paper discusses how to thoroughly define the expected operating envelope to achieve the widest possible operating range.
The limits of typical design options, as well as various alternatives to avoid torsional vibration problems, are illustrated with three case studies.
Read the technical paper here:
Torsional challenges – GMC 2019
This paper was written by Alasdair Robinson, BSc, PEng, of Wood for the GMRC Gas Machinery Conference 2019.
Wood has created a calculator to help control pipe pulsation in reciprocating gas compressor systems by finding what pipe lengths to avoid. The tool will aid those who are attempting to control pulsation without resorting to additional controls. Having the correct pipe lengths will save the project time and money.
Follow the steps to find which pipe lengths to avoid, but be aware that Wood states that this tool is for educational purposes only.
Access the calculator here:
Pipe Lengths to Avoid Calculator
Wood also has many other tools and calculators on their website that operators and engineers could make use of.
A sound foundation is a key factor in a successful reciprocating compressor application. Conventional concrete block foundations provide a reliable design, but the cost can be significant. Driven pile and helical or screw pile foundations are good alternatives that have been used successfully, even for very large reciprocating compressor packages. A pile foundation has the advantage of lower costs and shorter installation time compared to concrete block foundations.
The pile foundation design must consider static loads, which is a well-understood requirement. Reciprocating compressors also generate dynamic forces as part of their normal operation, which must be considered in the pile foundation design along with the static loads.
A dynamic analysis of pile foundations requires specific approaches and practices, and the package design must include special considerations when a pile foundation is used. There are also some differences between driven pile and helical pile foundations that must be considered.
This paper outlines the general design practices for driven and helical pile foundations for reciprocating compressors. The advantages and disadvantages of pile foundations and concrete block foundations are discussed. Case studies for reciprocating compressor packages are presented to demonstrate the use of pile foundations and the need for a dynamic foundation analysis.
Read the technical paper here:
Reciprocating compressor foundation design with steel piles – GMC 2019
This paper was written by Kelly Eberle, BSc, PEng, of Wood for the GMRC Gas Machinery Conference 2019.
This paper presents a method of general geometrical definitions of screw machine rotors and their manufacturing tools. It describes the details of lobe shape specification, and focuses on a new lobe profile, which yields a larger cross-sectional area and shorter sealing lines resulting in higher delivery rates for the same tip speed. A well proven mathematical model was used to determine the optimum profile, compressor housing size, and compressor ports to achieve the superior compressors.
Geometry of Screw Compressor Rotors
Authors:
Nikola Stosic
Ian Kenneth Smith
Ahmed Kovacevic
Elvedin Mujic
The centrifugal compressor market may experience vast growth in to 2026, according to a study by The Research Insights. The report analyzes the current state of the centrifugal compressor market and predicts the evolution of the market until 2026.
An overview of the report can be accessed here.
For more information, contact:
Robin
Sales manager
Contact number: +91-996-067-0000
https://www.theresearchinsights.com
How Wireless, Cloud, and Big-Data Techniques are Revolutionizing Future Industrial Reciprocating Engine & Compressor Machinery Failure Detection/Prediction Techniques
smart Methodologies Of Monitoring Reciprocating Compressors
IMI Sensors designed the Reciprocating Machinery Protector (Model 649A01) to simplify the process of monitoring and protecting reciprocating compressors.
Liquefied Natural Gas has been on the rise worldwide since the 1970s, with the largest international oil and gas companies investing in LNG plants as well as import/ export terminals. According to the Centre for Energy Economics, the experimentation with LNG and its first plant date back to 1912-1917. The world was quickly turned off of LNG production when disaster struck in Cleveland, Ohio in 1944 at an LNG peakshaving facility. A massive fire occurred due to a leak of 9,400 gallons of LNG after the introduction of a new, larger LNG tank constructed of low nickel content, which caused the tank to crack. The explosion and the resulting fires killed 128 people. This, of course, instilled fear into the public regarding the industry
and resulted in a lack of interest from major players for the coming decade. Extensive safety precautions were developed and LNG production and transportation became a more regulated and stable operation, with only one reported incident in Algeria in 2004 since.*
It was the United Kingdom who later showed an interest in LNG and converted an old World War 2 freighter, The Methane Pioneer. The country became the world’s first LNG importer and began a small scale operation between the UK and Algeria. Things picked up following the success of the operation, which later resulted in hundreds of plants and terminals worldwide, including 13 terminals and one plant in the USA, 3 plants in Australia, 2 plants in Norway, 4 terminals in the UK and one terminal in Canada, with pending plans for another on the west coast. “About five or ten years ago, the USA was the biggest importer of LNG, and they had set up many import terminals to support receiving LNG into the country. Lately, because of all of the shale gas readily available in the country, the need to import LNG into the USA has significantly diminished. It will be interesting to see how the shift the USA has made from importing to exporting LNG will affect other countries’ economic states – only time will tell” says ESD’s highly experienced Technical Trainer, David Llewellyn. David is among three of ESD’s LNG trainers who have extensive hands-on experience in the industry as well as in the classroom, educating staff of many existing and developing LNG projects. ESD has worked largely in Australia, training hundreds of staff on Chevron’s developing Gorgon project, Woodside operated NorthWest Shelf and Pluto plants, Shell’s developing Floating LNG – Prelude, ConocoPhillips and Santos’ operated Darwin LNG, ConocoPhillips and Origin Energy’s Australia Pacific LNG, and Santos’ Gladstone LNG. ESD Simulation Training hopes to provide support training for upcoming LNG developments in Canada and the USA and continue to support the LNG industry by providing top class, hands-on technical training worldwide.
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